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The diamicton at Deadman Pass, central Sierra Nevada, California: a residual lag and colluvial deposit, not a 3 Ma glacial till

Geological Society of America Bulletin

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Abstract

Evidence that the diamicton at Deadman Pass is not till includes the following: (1) distribution of the diamicton is limited to areas underlain by the distinctive clast-rich lower pyroclastic member of the quartz latite of San Joaquin Ridge, (2) clasts in the diamicton and in the lower pyroclastic member are identical, (3) clast lithologies in the diamicton reflect nearby sources, (4) glacial deposits are absent in well-exposed sections of the lower pyroclastic member, and (5) formation of diamicton from present-day weathering and mass wasting of outcrops of the lower pyroclastic member can be observed locally. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The diamicton at Deadman Pass, central Sierra Nevada, California: a residual lag and colluvial deposit, not a 3 Ma glacial till
Series title:
Geological Society of America Bulletin
Volume
102
Issue:
9
Year Published:
1990
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geological Society of America Bulletin
First page:
1165
Last page:
1173
Number of Pages:
9