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Miocene radiolarian faunas from southern California

Arthur Shackleton Campbell and Bruce Lawrence Clark
Miocene radiolarian faunas from southern California
Special Paper - Geological Society of America (February 1944) 52 (12, Part 2): 76 pp.


The Radiolaria described in this paper came from two areas in southern California, the Palos Verdes Hills and the Newport area. Most of these deposits consist of organic shales referred to as the Monterey shale. In the Palos Verdes Hills the deposits are about 2500 feet thick and have been divided into five lithologic members. Three are named (beginning at the base) the Altamira shale, the Valmonte diatomite, and the Malaga mudstone. Radiolaria were abundant in the latter two members. Most of the Newport area samples studied contain a very large proportion of species common to the Valmonte member of the Palos Verdes Hills. The writers conclude that the shales containing the Radiolaria of the Palos Verdes Hills and Newport area were laid down under conditions not greatly dissimilar to those existing in the adjacent Catalina Channel under open sea conditions; and that at least the upper portion of the Malaga mudstone is almost certainly bathyal, although possibly other portions were deposited under shallower water conditions. Ninety-one species, all of them new, are herein described.

ISSN: 0072-1077
EISSN: 2331-219X
Serial Title: Special Paper - Geological Society of America
Serial Volume: 52
Serial Issue: 12, Part 2
Title: Miocene radiolarian faunas from southern California
Author(s): Campbell, Arthur Shackleton
Author(s): Clark, Bruce Lawrence
Published: 194402
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 978-0-81372-051-7
Number of pages: 76
Accession Number: 1949-021709
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Monographic
Illustration Description: illus.
N32°30'00" - N42°00'00", W124°30'00" - W114°15'00"
Source Note: 51, vii; abs., Bull., p. 1962, Dec. 1, 1941.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1949
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