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Your search keyword '"Ramezani, Jahandar"' showing total 5 results
Start Over Author "Ramezani, Jahandar" Publisher american association for the advancement of science (aaas)
5 results on '"Ramezani, Jahandar"'

2. Reevaluating the evidence for a Hadean-Eoarchean dynamo

Author

Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences, Borlina, Cauê S, Weiss, Benjamin P, Lima, Eduardo A, Tang, Fengzai, Taylor, Richard JM, Einsle, Joshua F, Harrison, Richard J, Fu, Roger R, Bell, Elizabeth A, Alexander, Ellen W, Kirkpatrick, Heather M, Wielicki, Matthew M, Harrison, T Mark, Ramezani, Jahandar, Maloof, Adam C, Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences, Borlina, Cauê S, Weiss, Benjamin P, Lima, Eduardo A, Tang, Fengzai, Taylor, Richard JM, Einsle, Joshua F, Harrison, Richard J, Fu, Roger R, Bell, Elizabeth A, Alexander, Ellen W, Kirkpatrick, Heather M, Wielicki, Matthew M, Harrison, T Mark, Ramezani, Jahandar, and Maloof, Adam C

Abstract

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). The time of origin of the geodynamo has important implications for the thermal evolution of the planetary interior and the habitability of early Earth. It has been proposed that detrital zircon grains from Jack Hills, Western Australia, provide evidence for an active geodynamo as early as 4.2 billion years (Ga) ago. However, our combined paleomagnetic, geochemical, and mineralogical studies on Jack Hills zircons indicate that most have poor magnetic recording properties and secondary magnetization carriers that postdate the formation of the zircons. Therefore, the existence of the geodynamo before 3.5 Ga ago remains unknown.

Published
2021

3. Reevaluating the evidence for a Hadean-Eoarchean dynamo

Author

Borlina, Cauê S., primary, Weiss, Benjamin P., additional, Lima, Eduardo A., additional, Tang, Fengzai, additional, Taylor, Richard J. M., additional, Einsle, Joshua F., additional, Harrison, Richard J., additional, Fu, Roger R., additional, Bell, Elizabeth A., additional, Alexander, Ellen W., additional, Kirkpatrick, Heather M., additional, Wielicki, Matthew M., additional, Harrison, T. Mark, additional, Ramezani, Jahandar, additional, and Maloof, Adam C., additional

Published
2020
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4. Calibrating the End-Permian Mass Extinction

Author

Shen, Shu-zhong, primary, Crowley, James L., additional, Wang, Yue, additional, Bowring, Samuel A., additional, Erwin, Douglas H., additional, Sadler, Peter M., additional, Cao, Chang-qun, additional, Rothman, Daniel H., additional, Henderson, Charles M., additional, Ramezani, Jahandar, additional, Zhang, Hua, additional, Shen, Yanan, additional, Wang, Xiang-dong, additional, Wang, Wei, additional, Mu, Lin, additional, Li, Wen-zhong, additional, Tang, Yue-gang, additional, Liu, Xiao-lei, additional, Liu, Lu-jun, additional, Zeng, Yong, additional, Jiang, Yao-fa, additional, and Jin, Yu-gan, additional

Published
2011
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