HARTMAN MULTIMEDIA
Nature Based Multimedia Information Systems
|
HARTMAN MULTIMEDIA
Nature Based Multimedia Information Systems |
|
| M This location is well known as the Marble Mountain
Trilobite Quarry. In the lower
Cambrian shale here, a variety of trilobites and brachiopods occurs, including
such species as Acrocephalites trifossatus, Anomocarella spatha,
Bathyuriscus maximus, Corynixochus sp., and Fremontia
fremonti. The shale rests on a thin layer of Cambrian quartzite,
making the unconformity between it and the underlying Precambrian granitics
quite distinct. A very sparse creosote bush scrub, with Larrea
tridentata,
occurs in the area. Integrity: The
fossils, though not of particularly high quality nor in great abundance, have
been collected for a number of years and the area is frequently visited by
geology classes. Use: Research,
educational, observational. Collecting
should be permitted but commercial collecting banned.
Eventually, amateur collecting will deplete the site. Ref: Hazzard,
J. C. and C. H. Crickmay. 1933.
Notes on the Cambrian rocks of the eastern Mojave Desert, Calif.
Univ. of Calif. Dept. of Geol. Sci. Bull. Vol. 23, pp. 57-80. April 1981
|
|
Send mail to naturebase@aol.com with
questions or comments about this web site.
|