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Browsing by Author "Bowring, Samuel A."

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Calibrating the End-Permian Mass Extinction

Shen, Shu-Zhong; Crowley, James L.; Wang, Yue; Bowring, Samuel A.; Erwin, Douglas H.; Sadler, Peter M.; Cao, Chang-qun; Rothman, Daniel H.; Henderson, Charles M.; Ramezani, Jahandar; Zhang, Hua; Shen, Yanan; Wang, Xiang-Dong; Wang, Wei; Mu, Lin; Li, Wen-Zhong; Tang, Yue-Gang; Liu, Xiao-Lei; Liu, Lu-Jun; Zeng, Yong; Jiang, Yao-Fa; Jin, Yu-Gan (2011)

The end-Permian mass extinction was the most severe biodiversity crisis in Earth history. To better constrain the timing, and ultimately the causes of this event, we collected a suite of geochronologic, isotopic, and ...
Direct high-precision U Pb geochronology of the end-Cretaceous extinction and calibration of Paleocene astronomical timescales

Clyde, William C.; Ramezani, Jahandar; Johnson, Kirk R.; Bowring, Samuel A.; Jones, Matthew M. (2016)

The Cretaceous Paleogene (K Pg) boundary is the best known and most widely recognized global time horizon in Earth history and coincides with one of the two largest known mass extinctions. We present a series of new ...
High precision U Pb zircon geochronology for Cenomanian Dakota Formation floras in Utah

Barclay, Richard S.; Rioux, Matthew; Meyer, Laura B.; Bowring, Samuel A.; Johnson, Kirk R.; Miller, Ian M. (2015)

The Cretaceous Dakota Formation on and near the Colorado Plateau represents the time-transgressive shoreline deposits of the Western Interior Seaway and is a rich repository of fossil plants and animals. However, given the ...
High-resolution SIMS oxygen isotope analysis on conodont apatite from South China and implications for the end-Permian mass extinction

Chen, Jun; Shen, Shu-zhong; Li, Xian-hua; Xu, Yi-gang; Joachimski, Michael M.; Bowring, Samuel A.; Erwin, Douglas H.; Yuan, Dong-xun; Chen, Bo; Zhang, Hua; Wang, Yue; Cao, Chang-qun; Zheng, Quan-feng; Mu, Lin (2016)

Understanding the interplay of climatic and biological events in deep time requires resolving the precise timing and pattern of paleotemperature changes and their temporal relationship with carbon cycle variations and ...
Multiple Proxy Estimates of Atmospheric CO <SUB>2</SUB> From an Early Paleocene Rainforest

Kowalczyk, Jennifer B.; Royer, Dana L.; Miller, Ian M.; Anderson, Clive W.; Beerling, David J.; Franks, Peter J.; Grein, Michaela; Konrad, Wilfried; Roth-Nebelsick, Anita; Bowring, Samuel A.; Johnson, Kirk R.; Ramezani, Jahandar (2018)
A sudden end-Permian mass extinction in South China

Shen, Shu-Zhong; Ramezani, Jahandar; Chen, Jun; Cao , Chang-Qun; Erwin, Douglas H.; Zhang, Hua; Xiang, Lei; Schoepfer, Shane D.; Henderson, Charles M.; Zheng, Quan-Feng; Bowring, Samuel A.; Wang, Yue; Li, Xian-Hua; Wang, Xiang-Dong; Yuan, Dong-Xun; Zhang, Yi-Chun; Mu, Lin; Wang, Jun; Wu, Ya-Sheng (2018)

Previous studies of the end-Permian mass extinction have established that it was geologically rapid, but condensed sections have made it difficult to establish the exact timing of the extinction relative to fluctuations ...
When and how did the terrestrial mid-Permian mass extinction occur? Evidence from the tetrapod record of the Karoo Basin, South Africa

Day, Michael O.; Ramezani, Jahandar; Bowring, Samuel A.; Sadler, Peter M.; Erwin, Douglas H.; Abdala, Fernando; Rubidge, Bruce S. (2015)

Browsing by Author "Bowring, Samuel A."

Browsing by Author "Bowring, Samuel A."

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