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Fwd: Dinosaur megatracksite in Spain preserved by tsunami

Apparently my attempt to send this ref earlier today failed--so I'll
try again and add a summary of the research in Spanish (English short
abstract) from the V Congreso del Cretácico de España in 2013. The pdf
can be viewed and downloaded here:


---------- Forwarded message ----------
From: Ben Creisler <bcreisler@gmail.com>
Date: Mon, Oct 6, 2014 at 12:13 PM
Subject: Dinosaur megatracksite in Spain preserved by tsunami
To: dinosaur@usc.edu

Ben Creisler

A new online paper:

Rocío Navarrete, , Carlos L. Liesa, Diego Castanera, Ana R. Soria,
Juan P. Rodríguez-López & José I. Canudo (2014)
A thick Tethyan multi-bed tsunami deposit preserving a dinosaur
megatracksite within a coastal lagoon (Barremian, eastern Spain).
Sedimentary Geology (advance online publication)
DOI: 10.1016/j.sedgeo.2014.09.007

A thick multiple-bed tsunami deposits consisting of sandstones and
conglomerates has been discovered and investigated in the Camarillas
Formation (~ 130.6-128.4 Ma, Barremian age) in eastern Spain. The
tsunami deposit is interbedded within red mudstones deposited in mud
flats of a back-barrier system. It crops out along seven kilometres in
length and at its base a great number of dinosaur tracks assigned to
sauropods, ornithopods and theropods have been preserved as natural
casts; then constituting an exceptional regional megatracksite
associated with tsunami deposits. On the basis of sedimentological
features and the lateral and vertical architecture of the involved
lithofacies, up to five couplets of inflow-backflow deposits, formed
by a tsunami wave train, have been recognized overlying the tracks.
Although sedimentation mainly took place during backflow currents,
inflows led to the removal of sand from a fronting barrier island and
the rip-up of lagoonal carbonate and clay pebbles, depositing them in
the protected back-barrier lagoon. Its unusually great thickness is
interpreted, among others, as being the result of the filling of the
previous low topography of the back-barrier lagoon.