Reconstructing Early Permian tropical climates from chemical weathering indices
نویسندگان
چکیده
منابع مشابه
Abrupt chemical weathering increase across the Permian–Triassic boundary
Previous studies have suggested a variety of causes for the end-Permian extinction event including a bolide impact, flood basalt volcanism, methane clathrate dissociation, or some combination of catastrophic processes. One common feature of these hypotheses is the prediction of an enhanced earliest Triassic greenhouse. New high-resolution geochemical results from Graphite Peak, Antarctica suppo...
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Terrestrial vertebrates are first known to colonize high-latitude regions during the middle Permian (Guadalupian) about 270 million years ago, following the Pennsylvanian Gondwanan continental glaciation. However, despite over 150 years of study in these areas, the biogeographic origins of these rich communities of land-dwelling vertebrates remain obscure. Here we report on a new early Permian ...
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7 Tropical cyclone genesis indices (TCGIs) are functions of the large-scale environment which are 8 designed to be proxies for the probability of tropical cyclone (TC) genesis. While the perfor9 mance of TCGIs in the current climate can be assessed by comparison to observations of TC 10 formation, their ability to represent future TC activity based on projections of the large-scale en11 vironme...
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The Earth has an average surface temperature of about 15°C, which is, in terms of planetary conditions suitable for life, the equivalent of winning the cosmic lottery. Yet, without an atmosphere filled with biological waste gases capable of retaining heat (O2, N2O, CH4, CO2), the average temperature of the planet would be about −18°C (Smil 2002), making the present diversity and abundance of li...
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ژورنال
عنوان ژورنال: Geological Society of America Bulletin
سال: 2016
ISSN: 0016-7606,1943-2674
DOI: 10.1130/b31371.1