Geology and mineral deposits of the Poncha Springs SE quadrangle, Chaffee County, Colorado, by Ralph E. Van Alstine.
Van Alstine, Ralph Erskine, 1914-; Colorado. Mining Industrial Development Board.
1974
TN24.C6 V36 (Mapit)
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Title Geology and mineral deposits of the Poncha Springs SE quadrangle, Chaffee County, Colorado, by Ralph E. Van Alstine.
Author Van Alstine, Ralph Erskine, 1914-
Imprint Washington, U.S. Govt. Print. Off., 1974.
Language English
Description iii, 19 p. : ill., map, 1 fold. col. map (in pocket) ; 29 cm.
Call Number TN24.C6 V36
Dewey Decimal Classification 557.88/47
GPO Item No. 0624
Note "Work done in cooperation with the Colorado State Mining Industrial Development Board."
Bibliography, etc. Note Bibliography: p. 18-19.
Added Corporate Author Colorado. Mining Industrial Development Board.
Series Geological Survey professional paper ; 829.
Record Appears in On-Campus Resources > Books
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Abstract
Introduction
Earlier reports
Acknowledgments
Settlement and climate
Terrain
Geologic units
Precambrian rocks
Metamorphic rocks
Banded gneiss
Hornblende gneiss
Metagabbro
Origin of the metamorphic rocks
Pegmatite
Tertiary rocks
Volcanic rocks
Lower rhyolitic ash-flow tuff
Rhyodacite flow and tuff
Upper rhyolitic ash-flow tuff
Dry Union Formation
Quaternary deposits
Pleistocene deposits
Gravel
Holocene deposits
Alluvium
Fan alluvium
Landslide debris
Structural geology
Geomorphology
Economic geology
Base metals
Fluorspar
Gravel and sand
Manganese
Pegmatite minerals
References cited.

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