Research

Presentations

Professional meetings:

• American Geophysical Union
• Geological Society of America
• Lunar and Planetary Science Conference
• European Geophysical Union
• Japan Geophysical Union
• Other Meetings and Invited Talks

American Geophysical Union/Joint Assembly

W. Huang, J. Tarduno, T. Zhou, Reconsidering geomagnetic field spikes ca. 1.1 billion years ago, GP43C-0530, presented at American Geophysical Union Meeting, San Francisco, CA, December 11-15, 2023.

K. P Kodama, T. Zhou, R. Bono, R. D. Cottrell, J. A. Tarduno, On the possibility of a complete Ediacaran field collapse, GP43C-0531, presented at American Geophysical Union Meeting, San Francisco, CA, December 11-15, 2023.

J. A. Tarduno, Hadean to Eoarchean geodynamics and latitudes of continental crust formation during the emergence of life, P12A-04, presented at American Geophysical Union Meeting, San Francisco, CA, December 11-15, 2023.

T. Zhou, J. Tarduno, K. P. Kodama, E. G. Blackman, F. Nimmo, R. D. Cottrell, R. K. Bono, Evidence for a discontinuous geodynamo during the Ediacaran Period, DI23B-0026, presented at American Geophysical Union Meeting, San Francisco, CA, December 11-15, 2023.

J. A. Tarduno, Sethuraj K R., R. D. Cottrell, N. Vamivakas, H. Oda, Quantum diamond microscopy magnetometry without applied fields to reveal the unbiased carriers of natural remanent magnetization, GP41B-0499, presented at American Geophysical Union Meeting, San Francisco, CA, December 11-15, 2023.

Y.-X. Li, J. A. Tarduno, W. Jiao, X. Liu, S. Peng, S. Xu, A. Yang, Z. Yang, Intermittent Hyper-reversal and Non-axial Geocentric Dipole States of the Cambrian Dynamo, GP34A-07, presented at American Geophysical Union Meeting, San Francisco, CA, December 11-15, 2023.

Huang, W, Tarduno, JA, Zhou, T. Confirmation of the Ediacaran ultra-low geomagnetic field interval: Further evidence for the onset of inner core growth, Abstract No. GP26A-03, presented at The American Geophysical Union Meeting, Chicago, IL, 12-16 December 2022.

Tarduno, JA, Cottrell, RD, Bono, RK, Nimmo, F. Evidence for Hadean to Eoarchean Stagnant Lid Tectonics from the Paleomagnetism of Zircons, Abstract No. DI15A-06, presented at The American Geophysical Union Meeting, Chicago, IL, 12-16 December 2022.

Zhou, T, Tarduno, JA, Cottrell, RD. Absence of a long-lived lunar dynamo: opportunities to learn about the earth Earth and solar wind during future exploration, Abstract No. P46A-05, presented at The American Geophysical Union Meeting, Chicago, IL, 12-16 December 2022.

Bridges, JD, Tarduno, JA, Cottrell, RD. A Critical Review of North Pacific Red Clay Sediments and their Paleoclimatic Significance, Abstract No. PP53A-04, presented at The American Geophysical Union Meeting, New Orleans, LA, 13-17 December 2021.

Bridges, JD, Tarduno, JA, Cottrell, RD. Using FORC-PCA to Examine Source-to-sink Variations in Magnetic Mineralogy Across the North Pacific, Abstract No. GP35C-0330, presented at presented at The American Geophysical Union Meeting, New Orleans, LA, 13-17 December 2021.

Zhou, T, Tarduno, JA, Cottrell, RD, Padgett, F, Crummins, BT, Huang, W, Hamilton, M. Rapid Recovery of Earth's Magnetic Field Strength after Nucleation of the Inner Core, Abstract No. DI35D-0045, presented at The American Geophysical Union Meeting, New Orleans, LA, 13-17 December 2021.

Tarduno, JA, Blackman, EG, Oda, H. Past and future preservation of the terrestrial hydrosphere by Earth's magnetic field, Abstract No. SM043-04, presented at The American Geophysical Union Fall Virtual Meeting, 1-17 December 2020.

Tarduno, JA, Cottrell, RD, Bono, RK, Nimmo, F. Geodynamo origin to inner core growth: Core chemical evolution traced by paleomagnetism. Abstract No. DI13A-06, presented at The American Geophysical Fall Meeting, San Francisco, CA, 9-13 December 2019.

Huang, W, Crummins, BT, Zhou, T, Cottrell, RD, Tarduno, JA. Long term decrease in Proterozoic dynamo efficiency prior to inner core growth: Evaluation via single crystals. Abstract No. GP41A-0782, presented at The American Geophysical Fall Meeting, San Francisco, CA, 9-13 December 2019.

Cottrell, RD, Lawrence, K, Bono, RK, Johnson, CL, Tarduno, JA. Evidence for a Late Lunar Dynamo Revisited. Abstract No. GP43B-0794, presented at The American Geophysical Fall Meeting, San Francisco, CA, 9-13 December 2019.

Bridges, JD, Tarduno, JA, Cottrell, RD. Onset and Intensification of Northern Hemisphere Glaciation Recorded by the Environmental Magnetism of Pelagic Sediments of the North Pacific Ocean. Abstract No. GC51I-0940, presented at The American Geophysical Fall Meeting, San Francisco, CA, 9-13 December 2019.

Crummins, BT, Padgett III, F, Tarduno, JA, Cottrell, RD, Huffman, TN, Watkeys, MK, Thebe, P (2018) Archeomagnetism of southern Africa and history of the South Atlantic Anomaly: A new ~930 AD record from Makodu, Botswana, Abstract GP43A-0766 presented at 2018 Fall Meeting, Washington D.C. 10-14 December.

Cottrell, RD, Tarduno JA, Bono, RK, Oda, H (2018) Microconglomerate tests establish magnetic fidelity of Hadean zircons, Abstract GP11A-08 presented at 2018 Fall Meeting, Washington D.C. 10-14 December.

Huang, W, Tarduno, JA, Cottrell, RD, Bono, RK, Thern, ER (2018) Unraveling Archean magnetic histories by a comparison of whole rock and single crystal analyses of granites from Western Australia, Abstract GP21B-0651 presented at 2018 Fall Meeting, Washington D.C. 10-14 December.

Tarduno, JA, O'Brien, T, Smirnov, AV, Blackman, E, Carroll-Nellenback, J, Krot, AN (2018) External magnetization of undifferentiated carbonaceous chondrite parent asteroids: Constraints on early Solar System evolution, Abstract GP21C-0671 presented at 2018 Fall Meeting, Washington D.C. 10-14 December.

Zhou, T, Tarduno JA, Cottrell, RD, Padgett III, F, Crummins, BT, Huang, W, Hamilton, M (2018) Rock and paleomagnetism of anorthosites of the Witchita Mountains (Oklahoma) and their bearing on the Late Precambrian to Early Cambrian geodynamo, Abstract GP21B-0651 presented at 2018 Fall Meeting, Washington D.C. 10-14 December.

Tarduno, JA (2018) Hotspot and LLSVP Motion (Invited) Abstract GP23A-01 presented at 2018 Fall Meeting, Washington D.C. 10-14 December.

Bono, RK, Tarduno, JA, Nimmo, F (2017) Paleomagnetic evidence for a young inner core: ultra-low geomagnetic field 565 million years ago, Abstract DI33B-01632 resented at 2017 Fall Meeting, New Orleans, LA 11-15 December.

Tarduno, JA, Blackman, EG, Oda, H, Bono, RK, Carroll-Nellenback, J, Cottrell, RD, Nimmo, F (2017) Earth’s Paleomagnetosphere and Planetary Habitability, Abstract P53E-2231 presented at 2017 Fall Meeting, New Orleans, LA 11-15 December.

Tarduno, JA, Bono, RK, (2017) Hotspot motion caused the Hawaiian-Emperor Bend and LLSVPs are not fixed (Invited), Abstract GP21A-08 presented at 2017 Fall Meeting, New Orleans, LA 11-15 December.

Cottrell, RD, Tarduno, JA, Bono, RK, Thern, ER, Chhibber, SK (2016) The Hadean to Paleoarchean geodynamo: microconglomerate tests from siliciclastic metasedimentary rocks from the Southern Cross Terrane of Western Australia, Abstract DI13A-2344 presented at 2016 Fall Meeting, AGU, San Francisco, Calif. 12-16 December.

Bono, RK, Tarduno, JA, Cottrell, RD, Dare, MS (2016) he Paleomagnetic Record of Eoarchean to Hadean Zircons: Magnetic Hysteresis, Imaging Magnetic Sources, Micromagnetic Modeling and Constraining Post-formation Heating, Abstract GP22A-07 presented at 2016 Fall Meeting, AGU, San Francisco, Calif. 12-16 December.

Fearn, SS, Goldman, S, O'Brien, T, Tarduno, JA (2016) Investigation of Allanite as a Possible Paleomagnetic Recorder, Abstract GP31A-1281 presented at 2016 Fall Meeting, AGU, San Francisco, Calif. 12-16 December.

Dare, MS, Bono, RK, Tarduno, JA, Cottrell, RD, Directional Cluster Analysis on a Sphere: Retrieval of Archean Magnetic Directions from Data with High Dispersion, Abstract GP31B-1296 presented at 2016 Fall Meeting, AGU, San Francisco, Calif. 12-16 December.

Tarduno, JA, Cottrell, RD, Bono, RK, Thern, ER (2016) The first billion years of the geodynamo and its implications for the early core, Abstract DI42A-07 presented at 2016 Fall Meeting, AGU, San Francisco, Calif. 12-16 December.

O'Brien, T, Tarduno, JA, Smirnov, AV (2016) Core Problem: Does the CV Parent Body Magnetization require differentiation?, Abstract P51A-2123 presented at 2016 Fall Meeting, AGU, San Francisco, Calif. 12-16 December.

Dare, M, Tarduno, JA, Cottrell, RD, Bono, RK (2015), Multi-scale analyses of magnetic carriers in the Jack Hills metaconglomerates, Western Australia: Further evidence for a primary magnetization, Abstract GP23B-1304 presented at 2015 Fall Meeting, AGU, San Francisco, Calif., 14-18 December.

Cottrell, RD, Tarduno, JA, Bono, RK (2015), Micro-conglomerate tests and the Hadean to Paleoarchean geodynamo as recorded in zircons of the Jack Hills, Abstract GP23B-1302 presented at 2015 Fall Meeting, AGU, San Francisco, Calif., 14-18 December.

Grigsby, MR, Tarduno, JA, Cottrell, RD, Huffman, TN, Watkeys, MK, Blackman, EG (2015), An Archeomagnetic Record From Southern Africa and its Bearing on the History of the South Atlantic Anomaly, Abstract GP23A-1290 presented at 2015 Fall Meeting, AGU, San Francisco, Calif., 14-18 December.

Bono, RK and Tarduno, JA (2015), Ediacaran paleomagnetic field records from Laurentia: Insights into the evolution of the diversity of life and Earth's deep intereior, Abstract GP23B-1306 presented at 2015 Fall Meeting, AGU, San Francisco, Calif., 14-18 December.

Tarduno, JA, Cottrell, RD, Bono, RK, Dare, M (2015), Evidence for a Hadean to Paleoarchean geodynamo: Implications for the survivability of planetary hydrosphere, Abstract P34C-02 presented at 2015 Fall Meeting, AGU, San Francisco, Calif., 14-18 December.

Tarduno, JA, Walders, K., Bono, RK, Pelz, J, Jacobs, R (2015) Evaluating Experience-Based Geologic Field Instruction: Lessons Learned from a Large-Scale Eye-Tracking Experiment, Abstract ED33E-02 presented at 2015 Fall Meeting, AGU, San Francisco, Calif., 14-18 December.

Wagner, CL, Tarduno, JA, Stein, A, Sia, E (2015), Characterization of a Single Magnetotactic Bacterial Species from Devil's Bathtub, Mendon Ponds Park, Honeoye Falls, NY, Abstract GP41A-03 presented at 2015 Fall Meeting, AGU, San Francisco, Calif., 14-18 December.

Tarduno, JA, Blackman, EG, Huffman, T, Watkeys, MK and Cottrell, RD (2015), The history of the South Atlantic Anomaly as viewed from southern Africa: Potential influences of the African LLVSP on the geodynamo, Abstract GP24A-0182 presented at 2015 Joint Assembly Meeting, Montreal, Quebec, Canada., 3-7 May.

Cottrell, RD, Tarduno, JA and Bono, RK (2015), The geodynamo as recorded in Archean and Hadean zircons, Abstract GP22A-07 presented at 2015 Joint Assembly Meeting, Montreal, Quebec, Canada., 3-7 May.

Bono, RK and Tarduno, JA (2015), The Nature of the Ediacaran to Early Cambrian Geomagnetic Field, Abstract GP22A-04 presented at 2015 Joint Assembly Meeting, Montreal, Quebec, Canada., 3-7 May.

Tarduno, JA and Bono, RK (2014), Hotspot Motion, Before and After the Hawaiian-Emperor Bend, Abstract DI34A-02 presented at 2014 Fall Meeting, AGU, San Francisco, Calif., 15-19 Dec.

Tarduno, JA and Cottrell, RD (2014), Extending the core paradox posed by an early dynamo, Abstract DI51A-4346 presented at 2014 Fall Meeting, AGU, San Francisco, Calif., 15-19 Dec.

O'Brien, T, Tarduno, JA and Hofmann, A (2014), Single Silicate Crystal Paleointensity Analyses of the ca. 2.575 Ga Great Dyke of Zimbabwe, Abstract GP51C-02 presented at 2014 Fall Meeting, AGU, San Francisco, Calif., 15-19 Dec.

Cottrell, RD, Tarduno, JA and Bono, RK (2014), Paleomagnetic measurements of Archean and Hadean zircons, Abstract GP53A-3752 presented at 2014 Fall Meeting, AGU, San Francisco, Calif., 15-19 Dec.

Bono, RK, Tarduno, JA, Nimmo, F, Scott, E, Ferriere, L. (2014), Mixing of Impactor Liquid Cores and Planetesimals Constrained by Single Silicate Crystal Magnetism, Abstract P44A-02 presented at 2014 Fall Meeting, AGU, San Francisco, Calif., 15-19 Dec.

Bono, RK and Tarduno, JA (2013), Polar wander, rapid plate velocity, or an equatorial dipole: A single silicate crystal study of the ca. 565 Ma Sept Iles Intrusive Suite in Laurentia, Abstract GP12A-03 presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 9-13 Dec.

Tarduno, JA, Huffman, TN, Watkeys, MK, Cottrell, RD and Wagner, CL (2013), Tracing the history of the South Atlantic Anomaly on an Archeomagnetic Timescale, Abstract GP53C-1163 presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 9-13 Dec.

Cottrell, RD, Tarduno, JA, Davis, WJ and Mamajek, E (2013), Constraining the geodynamo and magnetopause during Earth's first billion years, Abstract V31E-07 presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 9-13 Dec.

Tarduno, JA (2012), The oldest geodynamo and shielding from the solar wind (Invited), Abstract GP11A-01 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-7 Dec.

Tarduno, JA and Bono, RK (2011), Late Cretaceous to Paleogene plate motion, mantle flow and polar wander constrained by paleomagnetic data (Invited), Abstract T33I-04 presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.

Tarduno, JA, Cottrell, RD and Van Kranendonk, MJ (2011), Magnetic field strength, water and life on the early Earth, Abstract U13A-0020 presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.

Cottrell, RD, Evans, KM, Jacobs, RA, May, BB, Pelz, JB, Rosen, MR, Tarduno, JA and Voronov, J (2010), Eye-tracking novice and expert geologist groups in the field and laboratory, Abstract ED11C-03 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Scribner, CA, Neukirch, LP, Tarduno, JA, Watkeys, MK and HUffman, TN (2010), Archaeomagnetic analyses of Iron Age burnt hut floors from southern African, Abstract GP11A-0740 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Voronov, J, Tarduno, JA, Mukul, M, Cottrell, RD (2010), Paleomagnetic and paleointensity investigations of a 3.6 billion-year-old granite from India, Abstract GP11A-0744 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Neukirch, LP, Kornack, T, Tarduno JA (2010), Development of a SERF Atomic Magnetometer for Paleomagnetic Applications, Abstract GP11A-0756 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Tarduno, JA, Doubrovine, PV, Sleep, NH (2010), Comparisons of the Hawaiian and Louisville volcanic chains: Implications for frames of reference and processes causing hotspot motion (Invited), Abstract GP24A-01 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Smirnov, AV, Tarduno JA, Evans, DA (2010), Onset of inner core growth before 2.2 billion years ago: Insight from secular variation and paleointensity analyses, Abstract GP32A-08 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Usui, Y, Tarduno, JA, Lo, K, Duncan, RA, Mason, SN, Cottrell, RD, Voronov, J (2010), The geodynamo at ~200 Ma: paleosecular variation and paleointensity recorded by Central Atlantic Magmatic Province mafic rocks of Mauritania, Abstract GP33B-0949 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Nelson, JM, Tarduno, JA, Cottrell, RD, Valley, JW (2010), Paleomagnetic investigation of sedimentary units from Jack Hills, Western Australia, containing Archean-Hadean minerals, Abstract GP33C-0952 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Brock, J, Tarduno, JA, Cottrell, RD, Nimmo, F (2010), Paleomagnetism of the Brenham Pallasite, Abstract GP43B-1047 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Bono, RK, Tarduno, JA, Cottrell, RD, Higgins, P, Brinkman, DB (2010), Turonian Ultra-thermal Conditions as Recorded in the High Canadian Arctic: Faunal Controls and Tectomagmatic Boundary Conditions, Abstract PP11B-1441 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.

Voronov, J, Tarduno, JA, Jacobs, RA, Pelz, JB, Roden, MR (2009), An Active Vision Approach to Understanding and Improving Visual Training in the Geosciences, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract ED41B-0533

Bono, RK, Tarduno, JA, Cottrell, RD (2009), Rock and Paleomagnetism of Late Cretaceous-Paleogene volcanic rocks of northern Ellesmere Island, High Canadian Arctic, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract GP13B-0776

Neukirch, LP, Tarduno, JA, Watkeys, MK, Cottrell, RD, Huffman, TN, Wendt, AK, Voronov, J (2009), Centennial geomagnetic field strength change recorded in Iron Age (1000-1800 AD) ceramics from southern Africa, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract GP32A-05

Smirnov, AV, Tarduno, JA (2009), Proterozoic/Archean secular variation, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract GP32A-08

Tarduno, JA, Cottrell, RD, Watkeys, MK, Hofmann, A, Doubrovine, PV, Nelson, JM, Usui, Y (2009), Paleointensity, solar wind and magnetopause 3.45 billion years ago (Invited), Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract GP33B-07

Tarduno, JA, Cottrell, RD, Hopkins, J, Erickson, AM (2009), The paleomagnetic record of pallasite meteorites, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract GP34A-05

Erickson, AM, Tarduno, JA, Cottrell, RD (2009), Magnetic properties of the Esquel Pallasite, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract GP41B-0826

Hopkins, J, Tarduno, JA, Cottrell, RD (2009), Magnetic properties of the Imilac Pallasite, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract GP41B-0827

Voronov, J, Tarduno, JA, Cottrell, RD, Watkeys, MK, Hofmann, A (2009), Ferromagnetic resonance and magnetic carriers in Archean Buck Reef Chert from the Barberton Greenstone Belt, South Africa, Eos Trans. AGU, 90(22), Jt. Assem. Suppl., Abstract GP11B-03

Tarduno, JA, Nelson, JM, Cottrell, RD, Watkeys, MK (2009), Exploring the Magnetic Sands of Time: Using Zircons and Other Sedimentary Detritus to Understand the Early Geodynamo, Eos Trans. AGU, 90(22), Jt. Assem. Suppl., Abstract GP21A-03

Tarduno, JA (2009), Paleomagnetism and geodynamics of the onshore High Arctic Large Igneous Province and its connection to the offshore Alpha Ridge, Eos Trans. AGU, 90(22), Jt. Assem. Suppl., Abstract GP71A-03

Usui, Y, Tarduno, JA, Watkeys, MK, Hofmann, A, Cottrell, RD (2008), Evidence for a 3.45 Billion-Year-Old Geodynamo, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract GP11A-0697

Voronov, J, Tarduno, JA, Cottrell, RD, Watkeys, MK, Hofmann, A (2008), Magnetic Carriers In Archean Cherts from the Barberton Greenstone Belt, South Africa, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract GP11A-0702

Tarduno, JA (2008), Paleomagnetism and paleointensity recorded by single silicate crystals, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract GP24B-03

Cottrell, RD, Tarduno, JA, Watkeys, MK, Huffman, TN (2008), Multispecimen and temper archeomagnetic studies: Application to Iron Age sites from southern Africa, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract GP43C-03

Tarduno, JA (2008), Strength of the Archean geomagnetic field and effectiveness of magnetic shielding from the young active Sun, Eos Trans. AGU, 89(23), Jt. Assem. Suppl., Abstract GP33A-02

Cottrell, RD, Wendt, AK, Tarduno, JA, Watkeys, MK, Huffman, TN (2008), Paleointensity of Iron Age pottery shards from southern Africa, Eos Trans. AGU, 89(23), Jt. Assem. Suppl., Abstract GP41B-06

Tarduno, JA, Cottrell, RD, Watkeys, MK, Hofmann, A (2007), Constraints on Earth's oldest magnetic field, Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract DI31A-0247

Wendt, AK, Tarduno, JA, Cottrell, RD, Watkeys, MK, Huffman, TN (2007), Preliminary paleointensity investigation of Iron Age pottery shards from southern Africa, Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract GP41A-03

Sail, AB, Tarduno, JA, Cottrell, RD, Sutherland, R, Campbell, H (2007), The paleointensity of single silicate crystals from the Southern Volcanics of the Chatham Islands: What is the behavior of Earth's magnetic field leaving a superchron state?, Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract GP42A-07

Tarduno, JA, Cottrell, RD (2007), A re-examination of directional and paleointensity results from the Kiaman Reversed Polarity Superchron at Kiama: A single crystal approach, Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract GP52A-01

Smirnov, AV, Tarduno, JA (2007), Estimating Paleointensity Reliability Based on the Physical Mechanism of Natural Remanence, Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract GP53A-0953

Doubrovine, PV, Tarduno, JA (2007), Plate circuit reconstructions and the consistency between Pacific and non-Pacific paleomagnetic reference frames in Late Cretaceous to Paleogene times (80--50 Ma), Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract U13A-0870

Cottrell, RD, Tarduno, JA, Doubrovine, PV (2007), Motion of Pacific mantle plumes, Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract U34A-05

Tarduno, JA (2007), Long-term trends in paleointensity examined using Thellier analyses of single silicate crystals, Eos Trans. AGU, 88(23), Jt. Assem. Suppl., Abstract GP44A-04

Mason, SN, Cottrell, RD, Tarduno, JA, Lo, K (2006), Paleomagnetic characterization of Mesozoic Dikes from Mauritania, Africa, Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract GP11A-0066

Tarduno, JA, Cottrell, RD, Morris, K, Watkeys, MK (2006), New approaches for the determination of absolute paleointensity: long and short-term trends, Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract GP13A-01

Weaver, KL, Tarduno, JA, DePaolo, DJ (2006), Neodymium and strontium isotopic composition of the Strand Fiord Basalts: Cretaceous Volcanism in the Canadian Arctic, Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract U21B-0819

Vandermark, D, Tarduno, JA, Brinkman, D (2006), Late Cretaceous Extreme Polar Warmth recorded by Vertebrate Fossils from the High Canadian Arctic, Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract U24A-08

Tarduno, JA, Cottrell, RD (2006), Long-term strength of the time-averaged geodynamo: Status of the database and comparisons with numerical models, Eos Trans. AGU, 87(36), Jt. Assem. Suppl., Abstract DI31A-02

Cottrell, RD, Tarduno, JA, Watkeys, MK (2006), Stromberg Lava Directional and Paleointensity Data from Transitional Lava flows: Implications for the Mesozoic Dipole Low, Eos Trans. AGU, 87(36), Jt. Assem. Suppl., Abstract GP23A-04

Brown, H, Mason, SN, Ebsary, W, Bauch, DG, Cottrell, RD, Tarduno, JA, Sutherland, R, Campbell, H (2005), Characterization of Titanomagnetites and Titanomaghemites From Lavas of the Southern Volcanics, Chatham Islands, New Zealand, Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract GP13A-0029

Bauch, DG, Tarduno, JA, Cottrell, RD, Watkeys, MK (2005), Defining the Magnetic Field of the Early Earth Through Rock Magnetic and Paleomagnetic Analyses of Single Silicate Crystals, Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract GP13A-0032

Cottrell, RD, Tarduno, JA, Watkeys, MK (2005), Rock magnetic and paleointensity data from plagioclase crystals of the Stormberg (Karoo) Lavas of Lesotho, Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract GP13A-0033

Smirnov, AV, Bauch, DG, Tarduno, JA (2005), Temperature Dependence of Magnetic Susceptibility as a Potential indicator of fine-scale oxyexsolution in igneous rocks, Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract GP13A-0040

Doubrovine, PV, Tarduno, JA (2005), On the Conditions for Self-reversal of Remanent Magnetization in Titanomaghemite: Constraints From DSDP Site 307 Basalts, Eos Trans. AGU, 86(18), Jt. Assem. Suppl., Abstract GP12A-01

Smirnov, AV, Tarduno, JA (2005), Memory of the magnetic field applied during cooling in stoichiometric magnetite: Grain-size dependence and inferences on the physical processes, Eos Trans. AGU, 86(18), Jt. Assem. Suppl., Abstract GP12A-03

Tarduno, JA, Cottrell, RD, Doubrovine, PV, Madoff, R (2005), Hotspot motion, paleomagnetic tests of plate circuits,and coherency of the Pacific plate, Eos Trans. AGU, 86(18), Jt. Assem. Suppl., Abstract GP21A-03

Sinnett, DK, Tarduno, JA, Cottrell, RD (2004), A Late Cretaceous Reversal Recorded in Lavas of the High Canadian Arctic, Eos Trans. AGU, 85(47), Fall Meet. Suppl., Abstract GP11D-0873

Smirnov, AV, Tarduno, JA, Goree, WS (2004), Directional Behavior of Remanent Magnetization at Low Temperatures Measured With a New SQUID Magnetometer Probe, Eos Trans. AGU, 85(47), Fall Meet. Suppl., Abstract GP22A-04

Tarduno, JA (2004), BULLARD LECTURE: Hotspot motion, scales of mantle convection and the long-term history of the geodynamo, Eos Trans. AGU, 85(47), Fall Meet. Suppl., Abstract GP24A-01

Cottrell, RD, Smirnov, AV, Tarduno, JA (2004), Rapid true polar wander: A quixotic search?, Eos Trans. AGU, 85(47), Fall Meet. Suppl., Abstract U33A-0024

Bauch, DG, Tarduno, JA, Cottrell, RD, Watkeys, MK (2004), Toward Defining Archean Plate Motion, Eos Trans. AGU, 85(47), Fall Meet. Suppl., Abstract U33A-0031

Sinnett, DK, Tarduno, JA, Cottrell, RD (2004), Preliminary Paleomagnetic Results From Late Cretaceous Volcanic Rocks of Northern Ellesmere Island, Canada, Eos Trans. AGU, 85(17), Jt. Assem. Suppl., Abstract GP31B-02

Smirnov, AV, Tarduno, JA (2004), Paleomagnetic and Paleointensity Results from ~2.45 Ga Matachewan Dikes (Ontario, Canada): Implications for the Early Geodynamo, Eos Trans. AGU, 85(17), Jt. Assem. Suppl., Abstract GP43A-04

Bauch, DG, Cottrell, RD, Tarduno, JA (2004), Preliminary Directional and Paleointensity Studies of South African Proterozoic/Archean Minerals Using a CO2 Laser System, Eos Trans. AGU, 85(17), Jt. Assem. Suppl., Abstract GP43A-05

Tarduno, JA, Doubrovine, PV (2004), Self-reversed magnetizations in oceanic basalts, Eos Trans. AGU, 85(17), Jt. Assem. Suppl., Abstract GP54A-03

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Geological Society of America

J. Schneider, J. A. Tarduno, M. Ibanez-Mejia, M. Marroquin-Gomez, E. Dantas, R. D. Cottrell, C. Borrelli, Geomagnetic field strength and implications for environmental change during the diversification of Ediacaran fauna, presented at Geological Society of America Meeting, Pittsburg, PA, October 15-18, 2023.

J. A. Tarduno, W. Huang, S. Xiao, E. G. Blackman, T. Zhou, J. Schneider, R. K. Bono, R. D. Cottrell, M. Ibanez-Mejia, Ediacaran ultra-weak geomagnetic field, oxygen rise and macroscopic animal diversification, presented at Geological Society of America Meeting, Pittsburg, PA, October 15-18, 2023.

Tarduno, JA, Zhou, T (2022) The Ultra-weak Ediacaran Magnetic Field and the Renewal od Field Strength in the Cambrian: Implications for the Stability of Earth and the Rise of Animals, 2022 GSA Annual Meeting in Denver, Colorado (9-12 October 2022).

Tarduno, JA, Cottrell, RD, Zhou, T (2022) Earth's Hadean to Eoarchean Magnetic Field Recorded by Detrital Zircons, Joint Cordilleran-Rocky Mountain Section, GSA Section Meeting in Las Vegas, Nevada (15-17 March 2022).

Tarduno, JA (2021) Robust Hotspot Origin Far From LLSVP Margins, 2021 GSA Annual Meeting in Portland, Oregon (10-13 October 2021).

Tarduno, JA, Bono, RK, Brinkman, DB, Clarke, J, Higgins, P (2014) THE ULTRA-WARM ARCTIC CA. 90 MILLION YEARS AGO: TESTING LINKAGES WITH VOLCANIC CO2 OUTGASSING, 2014 GSA Annual Meeting in Vancouver, British Columbia (19-22 October 2014).

Tarduno, JA, Hu, B, May, BB, Evans, KM, Jacobs, RA, Pelz, JB, Cottrell, RD and Bono, RK (2012) AN ACTIVE VISION APPROACH TO UNDERSTANDING AND IMPROVING VISUAL TRAINING IN THE GEOSCIENCES, 2012 GSA Annual Meeting in Charlotte (4-7 November 2012).

Bono, RK and Tarduno, JA (2012) NEW PALEOLATITUDE DATA FROM MIDWAY ATOLL: EVIDENCE FOR LONG-TERM STABILITY OF EARTH'S SPIN AXIS, 2012 GSA Annual Meeting in Charlotte (4-7 November 2012).

Tarduno, JA (2009) RELATIVE MOTIONS BETWEEN PACIFIC BASIN OCEANIC PLATES AND NORTH AMERICA AND THEIR IMPRINT IN THE FRANCISCAN COMPLEX, 2009 Portland GSA Annual Meeting (18-21 October 2009).

Tarduno, JA, Doubrivine, PV, Cottrell, RD (2007) HOTSPOT MOTION, FRAMES OF REFERENCE, AND PREDICTED DRIVING FORCES FOR NORTH AMERICAN TECTONOSTRATIGRAPHIC TERRANES, GSA Cordilleran Section - 103rd Annual Meeting (4-6 May 2007).

Mason, SN, Cottrell, RD, Tarduno, JA and Lo, K (2006) CHARACTERIZATION OF MESOZOIC DIKES FROM MAURITANIA, WESTERN AFRICA AND IMPLICATIONS FOR THE COHERENCY OF THE AFRICAN CONTINENT, 2006 Philadelphia Annual Meeting (22-25 October 2006).

Cottrell, RD and Tarduno, JA (2002) LATE CRETACEOUS TO EARLY TERTIARY MOTION OF THE HAWAIIAN HOTSPOT AND ITS GEODYNAMIC IMPLICATIONS, GSA Cordilleran Section - 98th Annual Meeting (13-15 May 2002).

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Lunar and Planetary Science Conference

T. Zhou , J.A. Tarduno, R.D. Cottrell , C.R. Neal , F. Nimmo , M. Ibañez-Mejia, A Lunar core dynamo limited to the Moon’s first 200 million years, Contribution 2806, presented at 54th Lunar and Planetary Science Conference, The Woodlands, TX, March 13-17, 2023.

Anand, A, Carroll-Nellenback, J, Blackman, EG, and Tarduno, JA. Early Asteroid Magnetizations from the Solar Wind, Abstract Contribution No. 1617, presented at the Lunar and Planetary Science Conference, The Woodlands, Texas, 7-11 March 2022.

Tarduno, JA, Zhou, T, Cottrell, RD. When the Moon Lacked a Paleomagnetosphere, Abstract Contribution No. 2566, presented at the Lunar and Planetary Science Conference, The Woodlands, Texas, 7-11 March 2022.

Tarduno, JA, O'Brien, TM, Anand, A, Blackman, EG, Smirnov, AV, Carroll-Nellenback, J. External Magnetization of Carbonaceous Chondrites at 2-4 AU, 4.2-4.8 million years after CAI formation, Abstract Contribution No. 2676, Lunar and Planetary Science Conference, March 2020.

Cottrell, RD, Lawrence, K, Bono, RK, Johnson, CL, Tarduno, JA. Evidence for a late Lunar dynamo revisited. Abstract Contribution No. 2132, presented at the Lunar and Planetary Science Conference, The Woodlands, Texas, 18-22 March 2019.

Dey, S, Sanborn, ME, Yin, Q-Z, Tarduno, JA, Constraining the timing of the Vestan dynamo using diogenite Northwest Africa 5480, LPI Contribution 2083 presented at 49th Lunar and Planetary Science Conference, The Woodlands, Texas, 19-23, March 2018.

Tarduno, JA, O'Brien, TM, Blackman, EG, Smirnov, AV, Magnetization of CV meteorites in the absence of a parent body core dynamo, LPI Contribution 2850 presented at 48th Lunar and Planetary Science Conference, The Woodlands, Texas, 20-24, March 2017.

Tarduno, JA, O'Brien, TM, Smirnov, AV (2016) Does the magnetization of CV meteorites record a parent body core dynamo? Abstract #2609, 47th Lunar and Planetary Science Conference, The Woodlands, TX, 21-25 March.

O'Brien, TM, Tarduno, JA (2016) Allende meteorite remanence: Evidence for magnetic interactions, Abstract #2913, 47th Lunar and Planetary Science Conference, The Woodlands, TX, 21-25 March.

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European Geophysical Union

T. Zhou, J. Tarduno, K. Kodama, R. Cottrell, R. Bono, Did the dynamo cease during the Ediacaran Period prior to inner core nucleation? EGU23-7723, presented at European Geophysical Union Meeting, Vienna, Austria, April 23-28, 2023.

J. Tarduno, R. Cottrell, R. Bono, F. Nimmo, M. Watkeys, Hadean to Eoarchean stagnant lid tectonics recorded by the paleomagnetism of zircons, EGU23-10278, presented at European Geophysical Union Meeting, Vienna, Austria, April 23-28, 2023.

Cottrell, RD, Tarduno, JA, Bono, RK. Late Cretaceous true polar wander oscillation artifact: further evidence for Earth's long-term rotational stability, Abstract No. EGU22-6011, presented at The European Geophysical Union Virtual Meeting, 23-27 May 2022.

Tarduno, JA. Absence of a long-lived lunar paleomagnetosphere and opportunities for future exploration, Abstract No. EGU22-10400, presented at The European Geophysical Union Virtual Meeting, 23-27 May 2022.

Zhou, T, Tarduno, JA, Cottrell, RD, Nimmo, F. Early Cambrian renewal of the geodynamo and the origin of inner core structure, Abstract No. EGU22-10532, presented at The European Geophysical Union Virtual Meeting, 23-27 May 2022.

Tarduno, JA, Cottrell, RD, Hofmann, A. Testing continuity of the Hadean-Eoarchean geodynamo with zircon paleomagnetism, Abstract No. EGU2020-11157, presented at The European Geophysical Union Virtual Meeting, 4-8 May 2020.

Cottrell, RD, Tarduno, JA, Bono, RK, Oda, H. Paleomagnetic remanence tests: the essentials for investigations of the ancient geodynamo held by single crystals, Abstract No. EGU2019-8703, presented at The European Geophysical Union Meeting, Vienna, Austra, 7-12 April 2019.

Tarduno, JA and Bono, RL. Hotspot and LLSVP wander, Abstract No. EGU2019-3143, presented at The European Geophysical Union Meeting, Vienna, Austra, 7-12 April 2019.

Kodama, K and Tarduno, JA. Paleointensity of the 1.3 Ga Gardar basalts, southern Greenland-No evidence for onset of inner core growth Goldschmist on geodynamo, Abstract No. EGU2019-9919, presented at The European Geophysical Union Meeting, Vienna, Austra, 7-12 April 2019.

Tarduno, JA, Cottrell, RD, Bono, RK, Nimmo, F (2018) Two-silicate crystal approach to paleomagnetism and inner core growth, Abstract EGU2018-10509 presented at General Assembly Meeting, European Geophysical Union, Vienna, Austria, 8-13 April 2018.

Tarduno, JA (2017) Earth's magnetic field, preservation of the hydrosphere and planetary habitability (Petrus Peregrinus Medal Lecture), Abstract EGU2017-2747 presented at General Assembly Meeting, European Geophysical Union, Vienna, Austria, 23-28 April 2017.

Tarduno, JA, Cottrell, RD, Huffman, TN, Watkeys, MK, Grigsby, MR, Blackman, EG (2016) An archeomagnetic record from southern Africa and its bearing on the history of the South Atlantic Anomaly, EGU2016-8363, Vienna, Austria, 17-22 April 2016.

Cottrell, RD, Tarduno, JA, Bono, RK, Dare, MS (2016) The inverse microconglomerate test: Definition and application to the preservation of Paleoarchean to Hadean magnetizations in metasediments of the Jack Hills, Western Australia, EGU2016-9203, Vienna, Austria, 17-22, April 2016.

Tarduno, JA, Bono, RK, Cottrell, RD (2015) Paleoarchean and Cambrian observations of the geodynamo in light of new estimates of core thermal conductivity, EGU2015-8059, Vienna, Austria, 12-17 April 2015.

Tarduno, JA, Blackman, EG, Huffman, TN, Watkeys, MK, Cottrell, RD (2014) Antiquity of the South Atlantic Anomaly: Evidence for top-down influence on the geodynamo, EGU2014-11676, Vienna, Austria, 27 April- 02 May 2014.

Tarduno, JA, Cottrell, RD, Davis, WJ (2014) Constraints on the first billion years of the geodynamo from paleointensity studies of zircons, EGU2014-9071, Vienna, Austria, 27 April- 02 May 2014.

Bono, RK, Tarduno, JA, Singer, B (2013) Cretaceous magmatism in the High Canadian Arctic: Implications for the nature and age of Alpha Ridge, EGU2013-11429, Vienna, Austria, 07-12 April 2013.

Voronov, J, Tarduno, JA, Watkeys, MK, Hofmann, A (2013) Potential magnetofossils in ~3.4 billion-year-old cherts from the Barberton Greenstone Belt of South Africa, EGU2013-10414, Vienna, Austria, 07-12 April 2013.

Tarduno, JA (2013) Dynamos, Planetary Evolution and Life, EGU2013-12762, Vienna, Austria, 07-12 April 2013.

Cottrell, RD, Tarduno, JA, Bono, RK (2012) Probing the Oldest Geodynamo, EGU2012-12523, Vienna, Austria, 22-27 April 2012.

Tarduno, JA, Cottrell, RD (2012) Single Crystal Paleointensity Analyses of Olivine-Diogenites: Implications for a Past Vestan Magnetic Field, EGU2012-11774, Vienna, Austria, 22-27 April 2012.

Tarduno, JA, Cottrell, RD, Van Kranendonk (2011) Observational constraints on the onset and strength of the early Earth's magnetic field, EGU2011-12662, Vienna, Austria, 03-08 April 2011.

Tarduno, JA, Cottrell, RD, Watkeys, MK, Hofmann, A, Doubrovine, PV, Mamajek, E, Liu, D, Sibeck, DG, Neukirch, LP, Usui, Y (2010) The Paleoarchean geodynamo, solar wind and magnetopause, EGU2010-15270, Vienna, Austria, 02-07 May 2010.

Tarduno, JA, Cottrell, RD, Doubrovine, PV (2010) Comparison of the Hawaiian and Louisville volcanic chains: Implications for hotspot motion, EGU2010-14039, Vienna, Austria, 02-07 May 2010.

Tarduno, JA, Bunge, H-P, Sleep, N, Hansen U (2009) Bends in Hotspot Tracks: Kinematic observations and geodynamic models, EGU2009-13546, Vienna, Austria, 19-24 April 2009.

Tarduno, JA, Cottrell, RD, Watkeys, MK, Hofmann, A (2008) Strength of the Archean geomagnetic field, the paleomagnetosphere, and magnetic shielding against the young active Sun (solicited), EGU2008-A-08317, Vienna, Austria, April 2008.

Tarduno, JA, Cottrell, RD, Watkeys, MK, Hofmann, A (2008) Constraints on Earth's oldest magnetic field (solicited), EGU2008-A-08130, Vienna, Austria, April 2008.

Tarduno, JA, Cottrell, RD (2007) The Kiaman Reversed Polarity Superchron at Kiama (solicited) EGU2007-A-02026, Vienna, Austria, April 2007.

Cottrell, RD, Tarduno, JA, Watkeys, MK (2007) Examining the strength of Earth's early magnetic field (solicited) EGU2007-A-02030, Vienna, Austria, April 2007.

Cottrell, RD, Tarduno, JA (2006) Low temperature oxidation and long-term paleointensity (solicited) EGU06-A-08682, Vienna, Austria, 03-07 April 2006.

Tarduno, JA, Cottrell, RD (2006) Hotspot motion and reference frames for plate motion (solicited) EGU06-A-09541, Vienna, Austria, 03-07 April 2006.

Tarduno, JA, Doubrovine, PV, Madoff, R (2005) Hotspot motion, paleomagnetic tests of plate circuits, and coherency of the Pacific plate, EGU05-A-02724, Vienna, Austria, 25-29 April 2005.

Tarduno, JA, Cottrell, RD, Bauch, DG, Watkeys, MK (2005) Geomagnetic Field Morphology and Inner Core Growth, EGU05-A-02715, Vienna, Austria, 25-29 April 2005.

Tarduno, JA, Bauch, DG, Cottrell, RD, Watkeys, MK (2005) Mid-Archean Plate Velocities, EGU05-A-02719, Vienna, Austria, 25-29 April 2005.

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Japan Geophysical Union

J. A. Tarduno, R. D. Cottrell, R. K. Bono, F. Nimmo, H. Oda, Hadean to Eoarchean stagnant lid tectonics tracked by the paleomagnetism of zircons, presented at Japanese Geophysical Union Meeting, Makuhari Messe, Chiba, Japan, May 21-26, 2023.

J. A. Tarduno, T. Zhou, The ultra-weak Ediacaran geomagnetic field and the renewal of field strength in the Cambrian: implications for the rise of animal life, presented at Japanese Geophysical Union Meeting, Makuhari Messe, Chiba, Japan, May 21-26, 2023.

Tarduno, JA, Hofmann, A, Cottrell, RD (2020) Hints of ~3.4 billion-year-old magnetofossils: Possible early coevolution of life and the geodynamo, Abstract SEM19-08, presented at JpGU, virtual meeting 12-16 July 2020.

Tarduno, JA, Cottrell, RD, Nimmo, F, Oda, H, Hofmann, A. Hadean geodynamo origin and Ediacaran inner core growth preserved Earth's habitability, Abstract U20-04, presented at JpGU, virtual meeting 12-16 July 2020. Invited.

Oda, H, Kawai, J, Tarduno, JA (2018) Magnetic Moment Measurements using Scanning SQUID microscope: Noise Reduction and Calibration, Abstract SEM17-11 presented at JpGU, Makuhari Messe Chiba, Japan, 20-24 May 2018.

Tarduno, JA, Bono, RK, Cottrell, RD, Nimmo, F (2018) Ediacaran ultra-low geomagnetic field intensity: Evidence for a young inner core (Invited), Abstract SIT22-31 presented at JpGU, Makuhari Messe Chiba, Japan, 20-24 May 2018.

Tarduno, JA, Cottrell, RD, Bono, RK, Thern, E, Oda, H (2017) The first billion years of the geodynamo (Invited), Abstract SEM18-01 presented at JpAGU-AGU Joint Meeting, Makuhari Messe Chiba, Japan, 20-25 May 2017.

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Other Meetings and Invited Talks

Goldschmidt 2023

J. A. Tarduno, H-P Bunge, Hadean to Eoarchean stagnant lid tectonics and convection tracked by zircon paleomagnetism, presented at Goldschmidt, Lyon, France, July 9-14, 2023.

BEPIS - Beijing Earth and Planetary Interiors Symposium, August 24-27, 2022

Tarduno, JA. Hadean start, Ediacaran near collapse and Cambrian renewal of the geodynamo: Implications for the origin of Earth's Habitability, presented at the Sixth Beijing Earth and Planetary Interior Symposium, 7-9 August 2022. Invited

Goldschmidt 2020

Tarduno, JA, Hofmann, A, Cottrell, RD. Early Coevolution of Life and the Geodynamo Suggested by Potential ~3.4 Billion-Year-Old Magnetofossils, Abstract No. 2563, presented at Virtual Goldschmidt Conference, 21-26 June 2020.

AGU Chapman Conference, Iceland

Tarduno, JA. The High Arctic large igneous province and the deep mantle. Presented at The AGU Chapman Conference, Selfoss, Iceland, 13-18 October 2019. Invited.

Goldschmidt 2019

Tarduno, JA, Bono, RK, Cottrell, RD, Nimmo, F. Geodynamo Origin to Inner Core Growth: Core Chemical Evolution Traced by Paleomagnetism, Abstract No. 3325, presented at Goldschmidt Conference, Barcelona, Spain, 18-23 August 2019.

BEPIS - Beijing Earth and Planetary Interiors Symposium, August 24-27, 2019

Tarduno, JA. The nature of LLSVPs and their influence on the past, present and future geomagnetic field, presented at The Fifth Beijing Earth and Planetary Interior Symposium, Beijing, 24-27 August 2019. Invited

BEPIS - Beijing Earth and Planetary Interiors Symposium, May 27-31, 2016