Stable isotopes in late Pennsylvanian brachiopods from the United States: implications for Carboniferous paleoceanography

E. L. Grossman, Horng-Sheng Mii, T. E. Yancey

研究成果: 雜誌貢獻文章

108 引文 斯高帕斯(Scopus)

摘要

Stable isotopic analyses have been performed on nearly 500 nonluminescent brachiopod shells from Kansas, New Mexico, and Texas to evaluate temporal and geographic variability in the carbon and oxygen isotopic record for Late Pennsylvanian time. Regional variations are observed in the δ18O and δ13C values of nonluminescent brachiopod shells of the same genera. Data for nonluminescent brachiopods and marine cements reveal a mid-Carboniferous δ13C increase of 2‰ in Paleotethyan sea water. This increase is not seen in samples from the North American epicontinental seas, which opened to the Panthalassa ocean. This regional difference in δ13C appears to be due to changes in ocean circulation associated with the closing of the equatorial seaway and formation of Pangea. -from Authors

原文英語
頁(從 - 到)1284-1296
頁數13
期刊Geological Society of America Bulletin
105
發行號10
DOIs
出版狀態已發佈 - 1993 一月 1

ASJC Scopus subject areas

  • Geology

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