Rock 365 : Day 24 : Triassic Breccia #365photos
Day 24 : This breccia is a very immature sediment, with very poor
sorting of clast sizes, angular fragments and the wide variety of
clast types including limestones, sandstones and siltstone . It is
from the Triassic of the Spanish Pyrenees and probably represents an
alluvial fan deposit in a rifting half-graben. Some of the clasts
show ‘bearding’ where extension has opened up gaps at the margins of
the clasts that has been infilled with a quartz overgrowth. Location:
Between Candanchú and Canfranc Estación in Aragon.
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