-
Chert (/tʃɜːrt/) is a hard, fine-grained
sedimentary rock
composed of
microcrystalline or
cryptocrystalline quartz, the
mineral form of
silicon dioxide...
- is made up of
three formations, the Gr****y ****
Chert, the
Backbone Limestone and
Clear Cr****
Chert. It is
Lower Devonian in age.
Eastward the group...
- 57°20′12″N 002°50′29″W / 57.33667°N 2.84139°W / 57.33667; -2.84139 The
Rhynie chert is a
Lower Devonian sedimentary deposit exhibiting extraordinary fossil...
-
white chert.
Facies 3,
which overlies facies 2,
consists largely of centimeter-layered
chert. The
layered chert consists of white-gray
layered chert and...
- The
Princeton Chert is a
fossil locality in
British Columbia, Canada,
which comprises an
anatomically preserved flora of
Eocene Epoch age, with rich species...
-
microorganisms permineralized in 3.465-billion-year-old
Australian Apex
chert rocks. However, the
evidence for the
biogenicity of
these microstructures...
- The
Huntersville Chert or
Huntersville Formation is a
Devonian geologic formation in the
Appalachian region of the
United States. It is
primarily composed...
-
Clifty Limestone is very sandy,
light blue to
bluish grey. The
Penters Chert is a
Devonian geologic formation in the
Ozark Plateaus of Arkansas. Its...
- In 2014, a
chert manuport was
discovered embedded in an
ancient reef on
Barrow Island,
Western Australia. The
island has no
natural chert deposits and...
-
experienced low-grade metamorphism.
Other important lithologies include chert, basalt, limestone, serpentinite, and high-pressure, low-temperature metabasites...
