期刊
EARTH AND PLANETARY SCIENCE LETTERS
卷 375, 期 -, 页码 156-165出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.epsl.2013.05.020
关键词
Lopingian; delta C-13(carb) chemostratigraphy; South China; Iran; correlation
资金
- NSFC [41290260]
- National Science and Technology Major Project [2011ZX05008-001-10]
- National Basic Research Program of China [2011CB808905]
- United States National Science Foundation [EAR-0807377, EAR-0923620]
- Directorate For Geosciences
- Division Of Earth Sciences [0807377] Funding Source: National Science Foundation
Large carbon cycle perturbations are associated with the end-Permian mass extinction and subsequent recovery, but Late Permian (Lopingian) carbon cycle dynamics prior to the mass extinction event remain poorly documented. Here we present a high-resolution delta C-13(carb) chemostratigraphic framework from latest Guadalupian to earliest Triassic time, calibrated with high-resolution conodont biostratigraphy and high-precision geochronology. We observe two large negative excursions in delta C-13(carb), the first in uppermost Guadalupian strata and the second at the end of the Changhsingian stage, and between these events distinctive excursions from the middle Wuchiapingian to the early Changhsingian. The end-Changhsingian excursion represents a major reorganization of the global carbon cycle associated with the end-Permian mass extinction. However, the extent to which the end-Guadalupian and Wuchiapingian/Changhsingian boundary excursions result from local versus global controls remains unresolved. Regardless of their underlying causes, these three excursions provide chemostratigraphic markers for global correlation of Lopingian strata. (c) 2013 Elsevier B.V. All rights reserved.
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