التفاصيل البيبلوغرافية
| العنوان: |
Archean geodynamics : Ephemeral supercontinents or long-lived supercratons |
| المؤلفون: |
Liu, Yebo, Mitchell, Ross N., Li, Zheng-Xiang, Kirscher, Uwe, Pisarevsky, Sergei A., Wang, Chong |
| المساهمون: |
Department of Geosciences and Geography |
| بيانات النشر: |
Geological Society of America |
| سنة النشر: |
2022 |
| المجموعة: |
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
| مصطلحات موضوعية: |
Geosciences |
| الوصف: |
Many Archean cratons exhibit Paleoproterozoic rifted margins, implying they were pieces of some ancestral landmass(es). The idea that such an ancient continental assembly represents an Archean supercontinent has been proposed but remains to be justified. Starkly contrasting geological records between different clans of cratons have inspired an alternative hypothesis where cratons were clustered in multiple, separate "supercratons." A new ca. 2.62 Ga paleomagnetic pole from the Yilgarn craton of Australia is compatible with either two successive but ephemeral supercontinents or two long-lived supercratons across the Archean-Proterozoic transition. Neither interpretation supports the existence of a single, long-lived supercontinent, suggesting that Archean geodynamics were fundamentally different from subsequent times (Proterozoic to present), which were influenced largely by supercontinent cycles. ; Peer reviewed |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
This work was supported by an Australian Research Council Laureate Fellowship grant to Z.X. Li (FL150100133), grants from the National Natural Science Foundation of China (41890833 and 41888101) and the Chinese Academy of Sciences (IGGCAS201905) to R.N. Mitchell, and the Ministry of Science and High Education of the Russian Federation grant (075-15-2019-1883) to S.A. Pisarevsky. This is an International Geoscience Programme (IGCP) 648 "Supercontinent Cycles & Global Geodynamics" contribution. Comments from Wouter Bleeker and two anonymous reviewers greatly improved the manuscript.; Liu , Y , Mitchell , R N , Li , Z-X , Kirscher , U , Pisarevsky , S A & Wang , C 2021 , ' Archean geodynamics : Ephemeral supercontinents or long-lived supercratons ' , Geology , vol. 49 , no. 7 , pp. 794-798 . https://doi.org/10.1130/G48575.1; http://hdl.handle.net/10138/339369; 94fc3a74-f269-430e-885a-cd5e302dc9b6; 000675396700014 |
| الاتاحة: |
http://hdl.handle.net/10138/339369 |
| Rights: |
cc_by ; info:eu-repo/semantics/openAccess ; openAccess |
| رقم الانضمام: |
edsbas.FB144B22 |
| قاعدة البيانات: |
BASE |