Rise of calcispheres during the Carnian Pluvial Episode (Late Triassic)
نویسندگان
چکیده
It has been argued that the beginning of significant pelagic calcification could have linked to Carnian Pluvial Episode (CPE), a climate change in Late Triassic (~234–232 Ma) was marked by C-cycle disruption and global warming. Nevertheless, abundant calcareous nannofossils described so far only post-CPE rocks, therefore no conclusive hypotheses can be drawn on possible causal links with it. Here we show deep-water successions Western Tethys, Orthopithonella calcispheres interpreted as dinocysts became an important component carbonate sedimentation from onset CPE, constitute up 8% hemipelagic limestones. Before similar depositional environments, are rare or absent, never part sediment. This sedimentation, is mirrored shallow water environments rise reefs built Scleractinia corals. These innovations Earth's systems may indicate deep modification ocean biogeochemistry during CPE.
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ژورنال
عنوان ژورنال: Global and Planetary Change
سال: 2021
ISSN: ['0921-8181', '1872-6364']
DOI: https://doi.org/10.1016/j.gloplacha.2021.103453