Portal:Earth sciences/DYK/6
...that a
pit crater
(example pictured)
, unlike an
impact crater
, is formed by the ground sinking over a void such as an emptied
magma chamber
or
caldera
?
...that the late
Paleozoic
environment of the
Chaco-Tarija sedimentary basin
of
Bolivia
has been likened to that of present-day
Labrador Sea
?
...that there was intense
volcanic activity in Uruguay
during the
Cretaceous
period about
130 million
years ago?
...that six prehistoric
meteorite impacts
have created large
astroblemes
affecting the
geology of Saskatchewan
?
... that the
Wairau
,
Awatere
,
Clarence
and
Hope
faults
, are the main
active faults
of the
Marlborough Fault System
, and carry most of the displacement on the
Australian
-
Pacific
plate boundary
in northern
South Island
?
... that a
revolution in burrowing
marks the base of the
Cambrian
period, and is followed by the
Cambrian explosion
of animal diversity?
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