Terrestrial organic carbon isotopic composition (δ13Corg) and environmental perturbations linked to Early Jurassic volcanism: Evidence from the Qinghai-Tibet Plateau of China
Terrestrial organic carbon isotopic composition (δ13Corg) and environmental perturbations linked to Early Jurassic volcanism: Evidence from the Qinghai-Tibet Plateau of China
复制标题
陆地有机碳同位素组成（δ13Corg）和与早侏罗世火山活动有关的环境扰动：来自中国青藏高原的证据
DOI：
10.1016/j.gloplacha.2020.103331
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发表时间：
2020-12
影响因子：
3.9
通讯作者：
Jason Hilton
中科院分区：
文献类型：
--
作者：
鲁静;周凯;杨敏芳;Yvette Eley;邵龙义;Jason Hilton
The Early Jurassic break-up of Pangea and the formation of the Central Atlantic Ocean are associated with changes to the atmosphere, climate, and environment, as recorded in marine carbonates from the western Tethys Ocean. However, the expression of these global changes in terrestrial successions is less well known. To better understand terrestrial-response, we investigated organic carbon isotope composition (δ13Corg), weathering trends and geochemistry in Lower Jurassic lacustrine strata in the Qaidam Basin, China, on the northern margin of the eastern Tethys Ocean. Four negative δ13Corg carbon isotope excursions are identified in lacustrine black shales during the Pliensbachian to early Toarcian stages. These negative excursions correspond to the early Pliensbachian Warming Interval, the Subnodonus Negative Event at the beginning of the late Pliensbachian, the.Pliensbachian–Toarcian Boundary Event, and the early Toarcian Oceanic Anoxia Event (T-OAE), respectively, well documented in western Tethys Ocean successions. In our terrestrial successions from the Qaidam Basin, the first three events occurred under relatively warm and humid climates associated with enhanced weathering, lake transgression, and the prevalence of swamp environments. In contrast, the T-OAE was a period of intense.warming and arid climate, expressed by the deposition of red beds, a hiatus in coal deposition, a sharp reduction in plant diversity, and a floristic turnover in palynoflora. Our findings show that each negative excursion is associated with peaks in mercury and nickel concentrations, supporting the hypothesis that magma intrusion into organic-rich rocks and accompanying the volcanic eruption was responsible.
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影响因子：
--
作者：
B. Schootbrugge;J. McArthur;T. Bailey;Y. Rosenthal;J. Wright;K. Miller
通讯作者：
B. Schootbrugge;J. McArthur;T. Bailey;Y. Rosenthal;J. Wright;K. Miller
影响因子：
2.4
作者：
Beat Louis-Schmid;Pauline Rais;Dmitry Logvinovich;S. Bernasconi;H. Weissert
通讯作者：
Beat Louis-Schmid;Pauline Rais;Dmitry Logvinovich;S. Bernasconi;H. Weissert
DOI：
10.1016/j.palaeo.2017.06.019
发表时间：
2017-11
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
Leonie Peti;N. Thibault
通讯作者：
Leonie Peti;N. Thibault
DOI：
10.1111/j.1755-6724.2008.tb00583.x
发表时间：
2008-04
期刊：
Acta Geologica Sinica ‐ English Edition
影响因子：
--
作者：
Dong Shuwen;Zhang Yueqiao;L. Changxing;Y. Zhenyu;Ji Qiang;W. Tao;Huo Jianming;Chen Xuanhua
通讯作者：
Dong Shuwen;Zhang Yueqiao;L. Changxing;Y. Zhenyu;Ji Qiang;W. Tao;Huo Jianming;Chen Xuanhua
影响因子：
3.5
作者：
B. Ritts;A. Hanson;D. Zinniker;J. Moldowan
通讯作者：
B. Ritts;A. Hanson;D. Zinniker;J. Moldowan