High-resolution carbon isotope records of the Toarcian Oceanic Anoxic Event (Early Jurassic) from North America and implications for the global drivers of the Toarcian carbon cycle
Theodore R. Them,Theodore R. Them,Benjamin C. Gill,Andrew H. Caruthers,Andrew H. Caruthers,Darren R. Gröcke,E T Tulsky,Rowan C. Martindale,T P Poulton,Paul L. Smith +9 more
TLDR
In this article, the authors present biostratigraphically constrained carbon isotope data from western North America (Alberta and British Columbia, Canada) to better assess the global extent of the carbon cycle perturbations.About:
This article is published in Earth and Planetary Science Letters.The article was published on 2017-02-01 and is currently open access. It has received 127 citations till now. The article focuses on the topics: Carbon cycle & Abrupt climate change.read more
Citations
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Journal ArticleDOI
Terrestrial sources as the primary delivery mechanism of mercury to the oceans across the Toarcian Oceanic Anoxic Event (Early Jurassic)
Theodore R. Them,C. H. Jagoe,Andrew H. Caruthers,Benjamin C. Gill,Stephen E. Grasby,Darren R. Gröcke,Runsheng Yin,Jeremy D. Owens +7 more
TL;DR: The authors evaluated the utility of sedimentary mercury (Hg) contents as a proxy for fingerprinting ancient massive volcanism, which is often associated with biogeochemical perturbations.
Journal ArticleDOI
Cryosphere carbon dynamics control early Toarcian global warming and sea level evolution
TL;DR: In this paper, an initially volcanic-driven gentle rise of atmospheric temperature in the Early Toarcian triggered a meltdown of Earth's cryosphere which during the preceding Pliensbachian had expanded to the mid-latitudes and thus was highly vulnerable to warming.
Journal ArticleDOI
Evolution of the Toarcian (Early Jurassic) carbon-cycle and global climatic controls on local sedimentary processes (Cardigan Bay Basin, UK)
Weimu Xu,Micha Ruhl,Hugh C. Jenkyns,Melanie J. Leng,Melanie J. Leng,Jennifer Huggett,Daniel Minisini,Clemens V. Ullmann,James B. Riding,Johan W.H. Weijers,Marisa Storm,Lawrence Percival,Lawrence Percival,Nicholas J. Tosca,Erdem Idiz,Erik Tegelaar,Stephen P. Hesselbo +16 more
TL;DR: In this paper, the authors present integrated geochemical and physical proxy data (high-resolution carbon-isotope data (δ13C), bulk and molecular organic geochemistry, inorganic petrology, mineral characterisation, and major and trace-element concentrations) from the biostratigraphically complete and expanded entire Toarcian succession in the Llanbedr (Mochras Farm) Borehole, Cardigan Bay Basin, Wales, UK.
Book ChapterDOI
The Jurassic Period
TL;DR: In this paper, the authors used U-Pb dating from single zircons in ash beds, at the base Hettangian and the Pliensbachian-Toarcian boundary.
Journal ArticleDOI
Thallium isotopes reveal protracted anoxia during the Toarcian (Early Jurassic) associated with volcanism, carbon burial, and mass extinction.
Theodore R. Them,Theodore R. Them,Benjamin C. Gill,Andrew H. Caruthers,Angela M. Gerhardt,Darren R. Gröcke,Timothy W. Lyons,Selva M. Marroquín,Sune G. Nielsen,João Trabucho Alexandre,Jeremy D. Owens +10 more
TL;DR: Thallium isotope records from two anoxic basins are generated to track the earliest changes in global bottom water oxygen contents over the Toarcian Oceanic Anoxic Event of the Early Jurassic and reveal a more nuanced record of marine oxygen depletion and its links to biological change during a period of climatic warming in Earth’s past.
References
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Dissociation of oceanic methane hydrate as a cause of the carbon isotope excursion at the end of the Paleocene
TL;DR: In this paper, the authors show that bottom water temperature increased by more than 4°C during a brief time interval (<104 years) of the latest Paleocene (∼55.6 Ma) and there also was a coeval −2 to −3‰ excursion in the δ13C of the ocean/atmosphere inorganic carbon reservoir.
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Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event
Stephen P. Hesselbo,Darren R. Gröcke,Hugh C. Jenkyns,Christian J. Bjerrum,Paul Farrimond,Helen S. Morgans Bell,Owen R. Green +6 more
TL;DR: Carbon-isotope analyses of fossil wood demonstrate that isotopically light carbon dominated all the upper oceanic, biospheric and atmospheric carbon reservoirs, and that this occurred despite the enhanced burial of organic carbon.
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Methane emissions from wetlands: biogeochemical, microbial, and modeling perspectives from local to global scales
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