[meteorite-list] Volcanoes, Not Impacts, Caused End Triassic Mass Extinction

Paul etchplain at att.net
Wed Jun 21 18:31:10 EDT 2017

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
essica 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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