دورية أكاديمية
A template for an improved rock-based subdivision of the pre-Cryogenian timescale
| العنوان: | A template for an improved rock-based subdivision of the pre-Cryogenian timescale |
|---|---|
| المؤلفون: | Shields, Graham A., Strachan, Robin A., Porter, Susannah M., Halverson, Galen P., Macdonald, Francis A., Plumb, Kenneth A., De Alvarenga, Carlos J., Banerjee, Dhiraj M., Bekker, Andrey, Bleeker, Wouter, Brasier, Alexander, Chakraborty, Partha P., Collins, Alan S., Condie, Kent, Das, Kaushik, Evans, David A.D., Ernst, Richard, Fallick, Anthony E., Frimmel, Hartwig, Fuck, Reinhardt, Hoffman, Paul F., Kamber, Balz S., Kuznetsov, Anton B., Mitchell, Ross N., Poiré, Daniel G., Poulton, Simon W., Riding, Robert, Sharma, Mukund, Storey, Craig, Stueeken, Eva, Tostevin, Rosalie, Turner, Elizabeth, Xiao, Shuhai, Zhang, Shuanhong, Zhou, Ying, Zhu, Maoyan |
| المصدر: | Journal of the Geological Society |
| بيانات النشر: | Geological Society of London |
| سنة النشر: | 2022 |
| المجموعة: | Queensland University of Technology: QUT ePrints |
| الوصف: | The geological timescale before 720 Ma uses rounded absolute ages rather than specific events recorded in rocks to subdivide time. This has led increasingly to mismatches between subdivisions and the features for which they were named. Here we review the formal processes that led to the current timescale, outline rock-based concepts that could be used to subdivide pre-Cryogenian time and propose revisions. An appraisal of the Precambrian rock record confirms that purely chronostratigraphic subdivision would require only modest deviation from current chronometric boundaries, removal of which could be expedited by establishing event-based concepts and provisional, approximate ages for eon-, era- and period-level subdivisions. Our review leads to the following conclusions: (1) the current informal four-fold Archean subdivision should be simplified to a tripartite scheme, pending more detailed analysis, and (2) an improved rock-based Proterozoic Eon might comprise a Paleoproterozoic Era with three periods (early Paleoproterozoic or Skourian, Rhyacian, Orosirian), Mesoproterozoic Era with four periods (Statherian, Calymmian, Ectasian, Stenian) and a Neoproterozoic Era with four periods (pre-Tonian or Kleisian, Tonian, Cryogenian and Ediacaran). These proposals stem from a wide community and could be used to guide future development of the pre-Cryogenian timescale by international bodies. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| العلاقة: | https://eprints.qut.edu.au/213661/1/99199889.pdfTest; Shields, Graham A., Strachan, Robin A., Porter, Susannah M., Halverson, Galen P., Macdonald, Francis A., Plumb, Kenneth A., De Alvarenga, Carlos J., Banerjee, Dhiraj M., Bekker, Andrey, Bleeker, Wouter, Brasier, Alexander, Chakraborty, Partha P., Collins, Alan S., Condie, Kent, Das, Kaushik, Evans, David A.D., Ernst, Richard, Fallick, Anthony E., Frimmel, Hartwig, Fuck, Reinhardt, Hoffman, Paul F., Kamber, Balz S., Kuznetsov, Anton B., Mitchell, Ross N., Poiré, Daniel G., Poulton, Simon W., Riding, Robert, Sharma, Mukund, Storey, Craig, Stueeken, Eva, Tostevin, Rosalie, Turner, Elizabeth, Xiao, Shuhai, Zhang, Shuanhong, Zhou, Ying, & Zhu, Maoyan (2022) A template for an improved rock-based subdivision of the pre-Cryogenian timescale. Journal of the Geological Society, 179(1), Article number: jgs2020-222 1-22.; https://eprints.qut.edu.au/213661Test/; Faculty of Science; School of Earth & Atmospheric Sciences |
| الإتاحة: | https://doi.org/10.1144/jgs2020-222Test https://eprints.qut.edu.au/213661Test/ |
| حقوق: | free_to_read ; http://creativecommons.org/licenses/by/4.0Test/ ; 2021 The Author(s) ; This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
| رقم الانضمام: | edsbas.525F0E36 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |