- chlorite, and calcite. The
texture is
termed diabasic and is
typical of
diabases. This
diabasic texture is also
termed interstitial. The
feldspar is high...
- e. the
diabase usually cuts the sandstone) than
temporal (all the
Jotnian sandstones not
necessarily older than all the
Postjotnian diabases). At large...
- pyroxene, amphibole, and biotite.
Common mafic rocks include basalt,
diabase and gabbro.
Mafic rocks often also
contain calcium-rich
varieties of plagioclase...
-
extrusive igneous rock.
Types of trap rock
include basalt, peridotite,
diabase, and gabbro. Trap is also used to
refer to
flood (plateau) basalts, such...
- and the
specific gravity is 2.8 - 3.0. The type
localities are in the
diabases of the
Connecticut River valley and Arendal, Aust-Agder, Norway. ****ociated...
-
Subvolcanic rocks include diabase (also
known as dolerite) and porphyry.
Common examples of
subvolcanic rocks are
diabase,
quartz dolerite, microgranite...
-
intermediate between plutonic and
volcanic rock, and are
classified as
diabases or dolerites. Rare
ultramafic hypabyssal rocks called lamprophyres have...
- as
black granite. In
geological terms,
black granite might be gabbro,
diabase, basalt, diorite, norite, or anorthosite.
Morales Demarco, Manuela; Oyhantçabal...
- The York
Haven Diabase is a rock
formation in Pennsylvania,
United States. It
underlies the
Rossville Diabase and is Jur****ic in age. The
formation is...
-
granites and
rhyolites (the red rocks),
gabbroic rocks, anorthosites, and
diabases (the
black rocks).
Subsidence resulted in
burial by
sandstones and carbonates...
