Refractory clay deposits of south-central Colorado
By: by Karl M. Waagé.
Series: Geological Survey bulletin -- 993
Publisher: U.S. G.P.O.
Published: 1953
Place of publication: Washington
Language: eng
Number of pages: 104
Subjects: Clay -- Colorado -- Pueblo County.; Clay -- Colorado -- Fremont County.; Geology, Stratigraphic -- Cretaceous.; Geology -- Colorado -- Pueblo County.; Geology -- Colorado -- Fremont County.; Clay minerals -- Colorado -- Pueblo County.; Clay minerals -- Colorado -- Fremont County.; Mines and mineral resources -- Colorado -- Pueblo County.; Mines and mineral resources -- Colorado -- Fremont County.; Sedimentation and deposition -- Colorado -- Pueblo County.; Sedimentation and deposition -- Colorado -- Fremont County.; Sandstone -- Colorado -- Pueblo County.; Sandstone -- Colorado -- Fremont County.; Stratigraphic correlation -- Colorado -- Pueblo County.; Stratigraphic correlation -- Colorado -- Fremont County.; Dakota Formation.
Notes: Maps on five folded plates opposite p. 104.

"A description of the refractory and semirefractory clays in the Purgatoire formation and Dakota sandstone"--t.p.

Includes bibliographical references (p. 93-94) and index.