Sedimentary record of seismic events in the Eocene Green River Formation and its implications for regional tectonics on lake evolution (Bridger Basin, Wyoming)
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- 作者：Balá ; zs Tö ; rő ; balazs.toro@usask.ca" class="auth_mail" title="E-mail the corresponding author ; Brian R. Pratt brian.pratt@usask.ca" class="auth_mail" title="E-mail the corresponding author
- 关键词：Green River Formation ; Seismites ; Lacustrine facies ; Oil shales ; Syndepositional tectonism ; Eocene
- 刊名：Sedimentary Geology
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：344
- 期：Complete
- 页码：175-204
- 全文大小：11016 K
文摘
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The lacustrine Green River Formation (Wyoming) hosts a wide variety of seismites.
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Folds, load structures, microfaults, breccias, and dikes occur in profundal deposits.
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They indicate Eocene (~ 51.5 Ma) earthquakes sourced along the Uinta Thrust System.
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Earthquakes had minimum magnitude 6–7, intensity (MCS) ~ 9, and mean recurrence of ~ 8 k.y.
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Seismites also mark a shift from balanced-fill to underfilled stages in lake evolution.