A new chronology for the end-Triassic mass extinction

Paul Heinrich oxytropidoceras at cox.net
Tue Feb 23 22:46:23 EST 2010

Deenen, M.H.L., M. Ruhl, N.R. Bonis, W. Krijgsman,
W.M. Kuerschner, M. Reitsma, M.J. van Bergen, 2010,
A new chronology for the end-Triassic mass extinction.
Earth and Planetary Science Letters. vol. 291,
no. 1-4, pp. 113-125.

Abstract at:
http://dx.doi.org/10.1016/j.epsl.2010.01.003

PDF file at:
http://www.geo.uu.nl/~forth/publications/Deenen_2010a.pdf
http://www.geo.uu.nl/~forth/people/Martijn/Martijn.htm

In part, the abstract reads:

"The transition from the Triassic to Jurassic Period, initiating
the ‘Age of the dinosaurs’, approximately 200 Ma, is marked
by a profound mass extinction with more than 50% genus
loss in both marine and continental realms."

and

"We show that the oldest CAMP basalts are diachronous by
20 kyr across the Atlantic Ocean, and that these two volcanic
pulses coincide with the end-Triassic extinction interval in the
marine realm. Our results support the hypotheses of Phanerozoic
mass extinctions resulting from emplacement of Large Igneous
Provinces (LIPs) and provide crucial time constraints for
numerical modelling of Triassic–Jurassic climate change and
global carbon-cycle perturbations."

Yours,

Paul H.