Stratigraphic Nomenclature of the Central Santa Monica ...

Stratigraphic Nomenclature of the Central Santa Monica Mountains, Los Angeles County, California

GEOLOGICAL SURVEY BULLETIN 1457-E

Stratigraphic Nomenclature of the C entral Santa Monica Mountains, Los Angeles County, California

By R. F. YERKESawd R. H. CAMPBELL

With a section on AGE OF THE CONEJO VOLCANICS

By D. L. TURNER and R. H. CAMPBELL

CONTRIBUTIONS TO STRATIGRAPHY

GEOLOGICAL SURVEY BULLETIN 1457-E

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1979

UNITED STATES DEPARTMENT OF THE INTERIOR CECIL D. ANDRUS, Secretary

GEOLOGICAL SURVEY H. William Menard, Director

Library of Congress Cataloging in Publication Data

Yerkes, R. F., 1923Stratigraphic nomenclature of the central Santa Monica Mountains, Los Angeles County, California.

(Contributions to stratigraphy) (Geological Survey Bulletin 1457-E)

Bibliography: p. E30-E31.

1. Geology, Stratigraphic Tertiary. 2. Geology, Stratigraphic Cretaceous.

3. Geology, Stratigraphic Nomenclature California Santa Monica Mountains.

I. Campbell, Russell H., 1928- joint author. II. Title. III. Series. IV. Series:

United States. Geological Survey. Bulletin 1457-E.

QE75.B9 no. 1457-E [QE691]

557.3'08s [557.94'93]

79-10231

For sale by the Superintendent of Documents, U. S. Government Printing Office Washington, D. C. 20402

Stock Number 024-001-03180-9

CONTENTS

Page

Abstract _____________________________________________ El

Introduction __________________________________________ 1

Previous work ___________________________________ 2

Present report ______________________________________ 4

Stratigraphic nomenclature ______________________________ 4

Sequence north of the Malibu Coast fault _____________________ 4

Hina Canyon Formation __________________________ 4

Simi(?) Conglomerate________________________________ 7

Coal Canyon Formation__________________________ 8

Llajas(?) Formation_________________________________ 9

Sespe Formation _________________________________ 10

Piuma Member _________________________________ 10

Vaqueros Formation _________________________________ 11

Danielson Member ______________________________ 12

San Nicholas Member ____________________________ 12

Topanga Group.___________________________________ 13

Topanga Canyon Formation _________________________ 14

Topanga Canyon Formation (undivided) _ _____ ___ 15

Topanga Canyon Formation (divided) ____________ 15

Encinal member ____________ ___ ____ 15

Saddle Peak Member _________________________ 16

Fernwood Member _____________ ___________ 16

Cold Creek Member _______________________ 17

Conejo Volcanics ____________________________ 17

Age of the Conejo Volcanics, by D. L. Turner and

R. H. Campbell_-__-_ _-_

- 18

Calabasas Formation _________________________________ 22

Modelo Formation

______________________________ 24

Sequence south of the Malibu Coast fault _____________________ 25

Trancas Formation ___________________ ______ _ 25

Zuma Volcanics __________________________________ 27

Monterey Shale _________________________________ 28

References cited ____________________________

_ 30

ILLUSTRATIONS

[Plates are in pocket]

PLATE 1. 2. 3.

FIGURE 1. 2.

History of nomenclature and age of units. West-east composite vertical section, central Santa Monica Mountains. Bedrock geologic maps showing Stratigraphic relations in the central

Santa Monica Mountains.

Page

Index map of part of southern California showing area mapped ____ E2 Index map of central Santa Monica Mountains showing area mapped,

7 1/&-minute quadrangles, faults, and geographic features cited __ 5

ill

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download