Al Rose Formation | |
Type: | Formation |
Age: | Ordovician |
Period: | Ordovician |
Prilithology: | siltstone, mudstone, and shale |
Otherlithology: | chert |
Namedfor: | Al Rose Canyon, Inyo County, California |
Namedby: | Donald Clarence Ross |
Region: | Talc City Hills, California |
Country: | United States |
Unitof: | Mazourka Group |
Underlies: | Badger Flat Limestone |
The Al Rose Formation is a geologic formation in California. It consists mostly of siltstone, mudstone and shale, with some chert and occasional limestone. In it are found graptolite and trilobite fossils dating back to the Ordovician period.