PRE-CAMBRIAN (P-C)

a. Black mts, Panamint mts. b. both contain Lower and upper P-C rocks. 2. Rock Types. a. Early to mid P-C in age. b. 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 faulting. 3. Above the P-C lies an ... ................
................