The Bragdon Formation is a
geologic formation in
California. It preserves
fossils
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...
dating back to the
Carboniferous
The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carbonifero ...
period. Its
sandstones may be rich in
quartz,
chert and sedimentary rock fragments, or volcanic rock fragments, or volcanic ash (
tuff) containing abundant crystals. Gravelly, loamy brown soils of the Hugo series are commonly developed on Bragdon parent material in the
Trinity Lake area.
[
Lydon, P.A., and Klein, I.E., 1969, Geology of the southeast quarter of the Trinity Lake quadrangle, Trinity County, California:]
See also
*
List of fossiliferous stratigraphic units in California
This article contains a list of fossil-bearing stratigraphic units in the state of California, California, U.S.
Sites
See also
* Paleontology in California
References
*
{{DEFAULTSORT:Fossiliferous stratigraphic units in California
F ...
*
Paleontology in California
References
*
Carboniferous California
{{Carboniferous-stub