Comments on Geologic Parameters
05 Percent Shale:
Percent shale of the Repetto Formation is calculated from the isopach of the nonsandstone fraction, termed "siltstone-silty shale" by Conrey (1967). The greatest percentage of shale occurs in the east part of the Los Angeles Basin, where there are more than 3,000 ft (>914.6 m) of fine-grained deposits. Percent shale decreases toward the north part of the basin, near the conglomeratic mid- to upper fan facies (Redin, 1991).
05 Map:

05 Reference:
Conrey, B. L., 1967, Early Pliocene sedimentary history of the Los Angeles Basin, California: California Division of Mines and Geology Special Report 93, 63 p.
Geological Parameter 05, Percent Shale
- Arbuckle Group
- Basin Fill /Carbonates
- Cape Fear Formation
- Cedar Keys Lawson
- Fox Hills, Lower Hell Creek
- Glen Canyon Group
- Granite Wash
- Lower Potomac Group
- Lyons Formation
- Madison Group
- Miocene, Lower
- Miocene, Upper
- Morrison Formation
- Mt. Simon Formation
- Oligocene
- Oriskany Formation
- Paluxy Sand
- Pliocene, Lower
- Pliocene, Upper
- Pottsville Formation
- Pre-Tuscaloosa
- Repetto Formation
- St. Peter Sand
- Tuscaloosa (AL)
- Tuscaloosa (GA)
- Woodbine Formation