The Qiangtang Basin of Tibetan Plateau most widely outcrops marine Jurassic strata in China,even in eastern Asian,and the Jurassic strata and ammonites’occurrence are in favor of researching evolution of paleoceanogr...The Qiangtang Basin of Tibetan Plateau most widely outcrops marine Jurassic strata in China,even in eastern Asian,and the Jurassic strata and ammonites’occurrence are in favor of researching evolution of paleoceanography in the Tethyan region and global stratigraphic comparison.This work focused on the carbon isotope changes across the J I–J 2 boundary in the eastern Tethys region.展开更多
Objective The organic-matter-rich oil shales outcropped at the Biluo Co area of the Qiangtang Basin in Tibet are of the Toarcian(Early Jurassic)based on the ammonite fauna(Yi et al.,2003).We first proposed its sedimen...Objective The organic-matter-rich oil shales outcropped at the Biluo Co area of the Qiangtang Basin in Tibet are of the Toarcian(Early Jurassic)based on the ammonite fauna(Yi et al.,2003).We first proposed its sedimentary age to be the Early Toarcian and correlated with the Posidonia shales and the early Toarcian Oceanic Anoxic Event(TOAE)(Chen et al.,2005).The carbon isotopes excursions and Buchi bivalves suggest that these oil shales at the Biluo Co section are represent of T-OAE in the Asian Tethyan regions.展开更多
基金supported by the National Natural Science Foundation of China(grants No.41572089 and 41572095)
文摘The Qiangtang Basin of Tibetan Plateau most widely outcrops marine Jurassic strata in China,even in eastern Asian,and the Jurassic strata and ammonites’occurrence are in favor of researching evolution of paleoceanography in the Tethyan region and global stratigraphic comparison.This work focused on the carbon isotope changes across the J I–J 2 boundary in the eastern Tethys region.
基金supported by the National Natural Science Foundation of China (grants No. 41572089, 41572095 and 41602122)
文摘Objective The organic-matter-rich oil shales outcropped at the Biluo Co area of the Qiangtang Basin in Tibet are of the Toarcian(Early Jurassic)based on the ammonite fauna(Yi et al.,2003).We first proposed its sedimentary age to be the Early Toarcian and correlated with the Posidonia shales and the early Toarcian Oceanic Anoxic Event(TOAE)(Chen et al.,2005).The carbon isotopes excursions and Buchi bivalves suggest that these oil shales at the Biluo Co section are represent of T-OAE in the Asian Tethyan regions.