McArthur, J;
(2019)
Early Toarcian black shales: a response to an oceanic anoxic event or anoxia in marginal basins?
Chemical Geology
, 522
pp. 71-83.
10.1016/j.chemgeo.2019.05.028.
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Abstract
The Early Toarcian, organic-rich, black shales of the Cleveland Basin, Yorkshire UK, are the type sediments for the supposed early Toarcian oceanic anoxic event. The sediments have values of Cd/Mo that are <0.1 and values of Co (mg/kg) × Mn (%) that are >0.4. These values are typical of sediment deposited in modern basins that are hydrographically restricted and show that the Cleveland Basin was hydrographically restricted when depositing organic-rich sediments. These palaeo-proxies confirm earlier interpretations, based on Mo/TOC values, that argued for hydrographic restriction. The term Toarcian oceanic anoxic event can now be discarded.
| Type: | Article |
|---|---|
| Title: | Early Toarcian black shales: a response to an oceanic anoxic event or anoxia in marginal basins? |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.chemgeo.2019.05.028 |
| Publisher version: | https://doi.org/10.1016/j.chemgeo.2019.05.028 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Toarcian, Mo, Cd, OAE, TOAE, Cleveland Basin, palaeo-proxy |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10074754 |
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