Field Notebook: Arizona 1925b
Page 18
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Transcription
Clifton 13 Pink and For. Sandstone and Sh. several hundred feet thick. Best exposures in Silver Basin Creek, 2 miles s.w. of Morsei, and in the Eagle Creek foothills, 4 miles distant in the same direction. Above of Chordre Mt. Black Sh. alliance. Section from top hills 1/4 mile S.W. of Morsei Smelter Top feet 5, 140 ft. Reddish hard shale 50' Light-gray quartzite or. with Sh. 50 Black fine-grained shale 30 Striped green and fellurine brown Sh. 40- Chordre Li. 170- Has good fossils Glauconia cralvillensis, Puy- nellus fusiformis etc. These are upper Berthm beds according to Stanton. = Upper Cret. of Colorado series. Then porphyries of granitic, monzonitic, or dioritic types. Followed after the Berthm Cretaceous. marbly and other pegmatite masses in country. They diatrase that east the above. About same age. Then the time of general faulting. Came after late Cret. and before the lava flows of late Tertiary. May be 18 White foot late Then the Tertiary lavas - rhyolites, basalts, with some andesite. Sila mpl. = East Pleistocene.