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Tuffaceous ephemeral lake deposits on an alluvial plain, Middle Tertiary of central California

Sedimentology
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Abstract

The Oligocene and Miocene Valley Springs Formation represents a large fluvial depositional system that extended westward from sediment-filled palaeovalleys in the high Sierra Nevada to a piedmont alluvial plain under the present Central Valley. The Valley Springs Formation consists largely of tuffaceous mudrocks, tuffaceous sandstone, polymict conglomerate and rhyodacitic tuff. The tuffaceous mudrock lithofacies probably represents a complex of ephemeral lake and marsh environments on a low gradient alluvial plain. The inferred abundance of shallow lakes, ponds and marshes implies a climate that was wetter than the semi-arid climate of the region today. -from Author

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Tuffaceous ephemeral lake deposits on an alluvial plain, Middle Tertiary of central California
Series title Sedimentology
Volume 41
Issue 2
Year Published 1994
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Sedimentology
First page 215
Last page 232