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Friday, 23 June 2017

Volcanoes, Not Impacts, Caused End Triassic Mass Extinction

Volcanoes, Not Impacts, Caused End Triassic Mass Extinction

Volcanic eruptions triggered dawn of the dinosaurs (Huge pulses of volcanic activity are likely to have
played a key role in triggering the end Triassic mass extinction, which set the scene for the rise and age
of the dinosaurs, new Oxford University research has found.)

Dinosaurs got an evolutionary assist from huge volcanic eruptions by Mary Beth Griggs Popular Science

The paper is:
Lawrence M. E. Percival, Micha Ruhl, Stephen P. Hesselbo, Hugh C. Jenkyns, Tamsin A. Mather, and
Jessica H. Whiteside. Mercury evidence for pulsed volcanism during the end-Triassic mass extinction. PNAS, June 2017 DOI: 10.1073/pnas.1705378114

Unrelated article about volcanoes are:

Volcanic crystals give a new view of magma


Tracking the buildup to volcanic eruptions
University of Arizona, June 15, 2017

Crystals once deep inside a volcano offer new view of magma, eruption timing (Volcanologists are gaining a better understanding of what’s going on inside the magma reservoir that lies below New Zealand’s Mount Tarawera volcano. They’re finding a colder, more solid place than they thought, according to research published today in the journal Science.)

The paper is;
Rubin, A.E., Cooper, K.M., Till, C.B., Kent, A.J., Costa, F., Bose, M., Gravley, D., Deering, C. and
Cole, J., 2017. Rapid cooling and cold storage in a silicic magma reservoir recorded in individual
crystals. Science, 356(6343), pp.1154-1156.


Paul H.

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