ORCID Profile
0000-0002-7813-2455
Current Organisation
GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel
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Publisher: American Geophysical Union (AGU)
Date: 09-2013
DOI: 10.1002/GGGE.20230
Publisher: American Geophysical Union (AGU)
Date: 08-2008
DOI: 10.1029/2008GC001974
Publisher: Elsevier BV
Date: 09-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2008
DOI: 10.1039/B706727E
Publisher: Elsevier BV
Date: 10-2016
Publisher: American Geophysical Union (AGU)
Date: 12-2003
DOI: 10.1029/2003GC000539
Publisher: Wiley
Date: 11-11-2020
DOI: 10.1111/GGR.12364
Publisher: Springer Science and Business Media LLC
Date: 08-2012
DOI: 10.1038/NATURE11360
Abstract: Atmospheric carbon dioxide concentrations and climate are regulated on geological timescales by the balance between carbon input from volcanic and metamorphic outgassing and its removal by weathering feedbacks these feedbacks involve the erosion of silicate rocks and organic-carbon-bearing rocks. The integrated effect of these processes is reflected in the calcium carbonate compensation depth, which is the oceanic depth at which calcium carbonate is dissolved. Here we present a carbonate accumulation record that covers the past 53 million years from a depth transect in the equatorial Pacific Ocean. The carbonate compensation depth tracks long-term ocean cooling, deepening from 3.0-3.5 kilometres during the early Cenozoic (approximately 55 million years ago) to 4.6 kilometres at present, consistent with an overall Cenozoic increase in weathering. We find large superimposed fluctuations in carbonate compensation depth during the middle and late Eocene. Using Earth system models, we identify changes in weathering and the mode of organic-carbon delivery as two key processes to explain these large-scale Eocene fluctuations of the carbonate compensation depth.
Location: No location found
Location: United Kingdom of Great Britain and Northern Ireland
Location: Brazil
No related grants have been discovered for Ed Hathorne.