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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The dawn of CAMP volcanism and its bearing on the end-Triassic carbon cycle disruption
Journal of the Geological Society, Volume 171, No. 2, Year 2014
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Description
The cause-and-effect relationship between the c. 201 Ma eruption of the Central Atlantic magmatic province (CAMP) and the end-Triassic abrupt climate change and mass extinction is at present based on controversial temporal correlations. Upper Triassic sedimentary strata underlying CAMP basalts in Morocco illustrate a clear mineralogical and geochemical fingerprint of early CAMP basaltic eruptions, namely unusually high contents of MgO (10-32 wt%) and of mafic clay minerals (11-84%). In the same rocks a coincident negative carbon-isotope excursion (CIE) is present, equivalent to the so-called 'initial negative CIE' recorded worldwide shortly before the Triassic-Jurassic boundary. The new data show that the onset of CAMP activity preceded the end-Triassic carbon cycle disruption and that the initial negative CIE is unequivocally synchronous with CAMP volcanism. The results of this study strongly support the hypothesis that the culmination of pollution of atmosphere and seawater by CAMP-derived volcanic gases was the proximate cause of the end-Triassic mass extinction. © 2014 The Geological Society of London.
Authors & Co-Authors
Corso, Jacopo Dal
Italy, Padua
Università Degli Studi Di Padova
Marzoli, Andrea
Italy, Padua
Università Degli Studi Di Padova
Italy, Rome
Consiglio Nazionale Delle Ricerche
Tateo, Fabio
Italy, Rome
Consiglio Nazionale Delle Ricerche
Jenkyns, Hugh C.
United Kingdom, Oxford
University of Oxford
Bertrand, Hervé
France, Lyon
École Normale Supérieure de Lyon
Youbi, Nasrrddine
Morocco, Marakech
Université Cadi Ayyad
Portugal, Lisbon
Universidade de Lisboa
Mahmoudi, Abdelkader
Morocco, Meknes
Université Moulay Ismaïl
Font, Eric
Portugal, Lisbon
Faculdade de Ciências, Universidade de Lisboa
Burati, Nicoleta
Italy, Perugia
Università Degli Studi Di Perugia
Cirilli, Simonetta
Italy, Perugia
Università Degli Studi Di Perugia
Statistics
Citations: 77
Authors: 10
Affiliations: 9
Identifiers
Doi:
10.1144/jgs2013-063
ISSN:
00167649
Research Areas
Environmental
Study Locations
Morocco