Unraveling the Paleocene-Eocene thermal maximum in shallow marine Tethyan environments: the Tunisian stratigraphic record
نویسندگان
چکیده
منابع مشابه
Sharply increased insect herbivory during the Paleocene-Eocene Thermal Maximum.
The Paleocene-Eocene Thermal Maximum (PETM, 55.8 Ma), an abrupt global warming event linked to a transient increase in pCO2, was comparable in rate and magnitude to modern anthropogenic climate change. Here we use plant fossils from the Bighorn Basin of Wyoming to document the combined effects of temperature and pCO2 on insect herbivory. We examined 5,062 fossil leaves from five sites positione...
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Global ocean temperatures rapidly warmed by ~5°C during the Paleocene-Eocene Thermal Maximum (PETM; ~56 million years ago). Extratropical sea surface temperatures (SSTs) met or exceeded modern subtropical values. With these warm extratropical temperatures, climate models predict tropical SSTs >35°C-near upper physiological temperature limits for many organisms. However, few data are available t...
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Body size plays a critical role in mammalian ecology and physiology. Previous research has shown that many mammals became smaller during the Paleocene-Eocene Thermal Maximum (PETM), but the timing and magnitude of that change relative to climate change have been unclear. A high-resolution record of continental climate and equid body size change shows a directional size decrease of ~30% over the...
متن کاملUncorking the bottle: What triggered the Paleocene/Eocene thermal maximum methane release?
The Paleocene/Eocene thermal maximum (PETM) was a time of rapid global warming in both marine and continental realms that has been attributed to a massive methane (CH4) release from marine gas hydrate reservoirs. Previously proposed mechanisms for this methane release rely on a change in deepwater source region(s) to increase water temperatures rapidly enough to trigger the massive thermal diss...
متن کاملWhat caused the long duration of the Paleocene-Eocene Thermal Maximum?
[1] Paleorecords show that the Paleocene-Eocene Thermal Maximum (PETM, 56 Ma) was associated with a large carbon cycle anomaly and global warming >5 K, which persisted for at least 50 kyr. Conventional carbon cycle/climate models that include a single initial carbon input pulse over 10 kyr fail to reproduce the long duration of the PETM without invoking additional, slow carbon release over more...
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ژورنال
عنوان ژورنال: Newsletters on Stratigraphy
سال: 2013
ISSN: 0078-0421
DOI: 10.1127/0078-0421/2013/0028