TY - JOUR
T1 - Stable isotopes in late Pennsylvanian brachiopods from the United States
T2 - implications for Carboniferous paleoceanography
AU - Grossman, E. L.
AU - Horng-Sheng Mii, Mii
AU - Yancey, T. E.
PY - 1993
Y1 - 1993
N2 - 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 δ 18 O and δ 13 C values of nonluminescent brachiopod shells of the same genera. Data for nonluminescent brachiopods and marine cements reveal a mid-Carboniferous δ 13 C 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 δ 13 C appears to be due to changes in ocean circulation associated with the closing of the equatorial seaway and formation of Pangea. -from Authors
AB - 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 δ 18 O and δ 13 C values of nonluminescent brachiopod shells of the same genera. Data for nonluminescent brachiopods and marine cements reveal a mid-Carboniferous δ 13 C 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 δ 13 C appears to be due to changes in ocean circulation associated with the closing of the equatorial seaway and formation of Pangea. -from Authors
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U2 - 10.1130/0016-7606(1993)105<1284:SIILPB>2.3.CO;2
DO - 10.1130/0016-7606(1993)105<1284:SIILPB>2.3.CO;2
M3 - Article
AN - SCOPUS:84879887580
SN - 0016-7606
VL - 105
SP - 1284
EP - 1296
JO - Geological Society of America Bulletin
JF - Geological Society of America Bulletin
IS - 10
ER -
