types of sediments were accumulated.
This continued into the Cretaceous (66145 million years ago) where different
rocks continued accumulating in the
different parts of the basin.
At the end of the Cretaceous a huge
meteorite impact on the Yucatan
Peninsula in Mexico occurred which
caused a mass extinction. Because the
Alicante region was quite close to the
Yucatan in the late Cretaceous a lot of
the dust from the impact accumulated
in the basin forming a 2mm thick dark
layer, which can be seen in Agost, and
which is an international reference
for the end of the Cretaceous and the
beginning of the Tertiary (66 million
years ago).
Triassic rocks near Jijona
So this basin, which is pulling itself open, creating different water depths and underwater
topography which then causes the formation of different types of sedimentary rocks, suddenly
changes its behavior and starts closing. The African Plate to the south starts pushing