-
Clastic rocks are
composed of fragments, or clasts, of pre-existing
minerals and rock. A
clast is a
fragment of
geological detritus, chunks, and smaller...
- into four
groups based on the
processes responsible for
their formation:
clastic sedimentary rocks,
biochemical (biogenic)
sedimentary rocks,
chemical sedimentary...
- A
clastic **** is a seam of
sedimentary material that
fills an open
fracture in and cuts
across sedimentary rock
strata or
layering in
other rock types...
- In geology, a
clastic wedge is a
thick ac****ulation of
sediments or
sedimentary rocks eroded and
deposited landward of a
mountain chain or geological...
-
Shale is a fine-grained,
clastic sedimentary rock
formed from mud that is a mix of
flakes of clay
minerals (hydrous
aluminium phyllosilicates, e.g. kaolin...
-
diameter of
individual grains of sediment, or the
lithified particles in
clastic rocks. The term may also be
applied to
other granular materials. This is...
-
either cutting across layers of rock or
through a
contiguous m**** of rock.
Clastic ****s are
formed when
sediment fills a pre-existing crack. A
magmatic ****...
- ba****t,
particularly in the
southern part of the area.
These continental clastic rocks are
thought to be of Tri****ic-to-Jur****ic age,
although they may...
-
south by the
Guayana Shield. This
Guayana shield supplied fine-grained
clastic sediments,
which with the subsidence,
formed a
regional negative gravity...
- from
weathering which involves no movement.
Removal of rock or soil as
clastic sediment is
referred to as
physical or
mechanical erosion; this contrasts...
