Refining the Early Devonian time scale using Milankovitch cyclicity in Lochkovian-Pragian sediments (Prague Synform, Czech Republic)
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- 作者：A.C. Da Silvaa ; b ; ac.dasilva@ulg.ac.be" class="auth_mail" title="E-mail the corresponding author ; J. Hladilc ; HLADIL@gli.cas.cz" class="auth_mail" title="E-mail the corresponding author ; L. Chadimová ; c ; chadimova@gli.cas.cz" class="auth_mail" title="E-mail the corresponding author ; L. Slaví ; kc ; slavik@gli.cas.cz" class="auth_mail" title="E-mail the corresponding author ; F.J. Hilgene ; F.J.Hilgen@uu.nl" class="auth_mail" title="E-mail the corresponding author ; O. Bá ; bekd ; babek@prfnw.upol.cz" class="auth_mail" title="E-mail the corresponding author ; M.J. Dekkersa ; M.J.Dekkers@uu.nl" class="auth_mail" title="E-mail the corresponding author
- 关键词：orbital time scale ; spectral analysis ; Devonian ; magnetic susceptibility ; gamma ray spectrometry ; limestone
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 December 2016
- 年：2016
- 卷：455
- 期：Complete
- 页码：125-139
- 全文大小：3644 K
文摘
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15 Myr high resolution χin in and GRS records of Early Devonian carbonates are presented.
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Duration for the Lochkovian stage is 7.7±2.8 Myr and for the Pragian 1.7±0.6 Myr.
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Durations are considerably more precise than in current time scales.
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405 kyr and 100 kyr cycles are modulated by long term cycles of 1.0 and 2.4 Myr.