2 documents found, page 1 of 1
Rapid light carbon releases and increased aridity linked to Karoo–Ferrar magmat...
Font, E; Duarte, L; Dekkers, M; Remazeilles, C; Egli, R; Spangenberg, J; Fantasia, A; Ribeiro, J; Gomes, E; Mirão, J; AdatteT, TLarge-scale release of isotopically light carbon is responsible for the carbon isotope excursion (CIE) of the Toarcian Oceanic Anoxic Event during the Lower Jurassic. Proposed sources include methane hydrate dissociation, volcanogenic outgassing of carbon dioxide and/or thermogenic methane release from the Karoo‐Ferrar magmatic province (southern Africa). Distinct small-scale shifts superimposed on the long-ter...
Integrated mineralogical and rock magnetic study of Deccan red boles
Font, E; Adatte, T; Abrajevitch, a; Mirão, J; Sharma, N; Sordet, V; Andrade, MWe conducted a detailed rock magnetic and mineralogical study of bole beds from the Deccan magmatic province, India. Magnetic susceptibility of 15 bole beds showed two contrasting patterns, with susceptibility values either increasing or decreasing up the profile. We then focused on two representatives red boles located in the Western Ghats, the RBB and RBAN profiles, to unravel the nature and origin of these c...