CGprecambPRE-CAMBRIAN (P-C)1.Southern Death Valleya. Black mts, Panamint mtsb. both contain Lower and upper P-C rocks2. Rock Typesa. Early to mid P-C in ageb. Consist of schists and gneisses plus amphibolites and granites (1.8 billion years)(1) Absolute dates (radiometric) indicate mountain building event-date the metamorphism(2) extreme folding and faulting3. Above the P-C lies an unconformity (Great unconformity)Long period of erosiona. Rock lying above the unconformity > 7,000 ft thick PAHRUMP SERIES4. Pahrump Seriesa. Crystal Spring Formation-Coarse grained Sedimentary RocksSandstones and Conglomerates with intruded sills Diabase- coarse grained basalt or fine grained gabbrob. Beck Spring Dolomite--Limestone and Dolomitesc. Kingston Peak FormationQuartzite-derived from Sandstones and Conglomeratesd. Depositional Environments(1) Marine-Shallow(2) Geosyncline (trough shape) (Miogeocline)(3) source of sediment was from the E and N.E.5. Noonday Dolomite (unconformable above the Pahrump series)6. Sedimentary Rocks lie above the Noonday Dolomite (about10,000 thick)Sandstones, Shales, DolomitesStirling FormationJohnie FormationCGprecambTransitional through the P-C to Cambrian (Eocambrian)CGprecambPALEOZOIC AGE ROCKS7. Earliest Cambrian Strata found in Wood Canyon Formation (Contain Trilobites)8. Mojave Desert-75 miles to SE in Providence mountains is found 1000'of Hard sandstonesProspect Mountain Quartzitea. shallow marine depositb. lies with great angular unconformity on lower P-C schist, granite and gnessesc. Prospect mt. Quartzite is latest P-C or Early Cambriand. On top of Prospect mt. Quartzite is Latham shale- (mid-Cambrian trilobites)CORRELATION BETWEEN MOJAVE AND DEATH VALLEYPROVIDENCE MTS. AND MOJAVE DESERT(Marble Mountains)DEATH VALLEY MOJAVE