The Early Aptian Oceanic Anoxic Event 1a: excess volcanogenic CO2 triggering ocean acidification, biocalcification crisis, fertilization, accelerated weathering

Cinzia Bottini (*), Anthony Cohen (**), Elisabetta Erba (*) & Hugh Jenkyns (***)
(*) Dipartimento di Scienze della Terra, Università degli Studi di Milano, Italy. E-mail: cinzia.bottini@unimi.it; elisabetta.erba@unimi.it (**) Department of Earth & Environmental Sciences, The Open University, Milton Keynes, UK. E-mail: a.s.cohen@open.ac.uk (***) Department of Earth Sciences, Oxford University, UK. E-mail: hugh.jenkyns@earth.ox.ac.uk