-
increasing metamorphism,
greywackes frequently p**** into mica-schists,
chloritic schists and
sedimentary gneisses. The term "
greywacke" can be confusing, since...
-
Central Eastern Alps. The
lithologies of the
greywacke zone are:
Paleozoic turbidites (among them
greywackes) and
limestones of
Ordovician to
Devonian age;...
-
Green Caesar is a
portrait of
Gaius Julius Caesar made of
green egyptian greywacke, kept in the
Antikensammlung Berlin,
which was
likely made in the first...
-
marginal and
shallow sea. This has
meant that slates,
sandstones and
greywackes are the most
abundant rock
types in the Sauerland. In some
areas limestones...
- limestone.
Other arenites include sandstones, arkoses, greensands, and
greywackes.
Arenites mainly form by
erosion of
other rocks or
turbiditic re-deposition...
- mine in this region. The Wadi
Hammamat was a
notable source of granite,
greywacke, and gold.
Flint was the
first mineral collected and used to make tools...
-
characteristic shape of ribs of hard
greywacke with
narrow gaps
where mudstone was worn away, and
fragments of
greywacke lay on the
surface as a
talus deposit...
-
western extent of the ****emblage. The
Franciscan Complex is
dominated by
greywacke sandstones,
shales and
conglomerates which have
experienced low-grade...
- on the
limestone platform at
Norber near Settle." Many of the
Silurian greywacke boulders at the site are
perched on
pedestals of
limestone up to 30cm...
-
Torthorwald in the south.
Consisting of m****ive grits,
sometimes conglomeratic,
greywackes,
flags and shales,
these beds are
repeated by
innumerable folds frequently...
