GEOLOGY of the UPPER CRETACEOUS HORNBROOK FORMATION, OREGON and CALIFORNIA Editor
GEOLOGY OF THE UPPER CRETACEOUS HORNBROOK FORMATION, OREGON AND CALIFORNIA Editor TOR H. NILSEN U.S. Geological Survey Menlo Park, California September 28-30, 1984 Published by The Pacific Section Society of Economic Paleontologists and Mineralogists Los Angeles, California U.S.A. Geology of the Upper Cretaceous Hornbrook Formation, Oregon and California, 1984 Copyright © 2012 Pacific Section, SEPM (Society for Sedimentary Geology) For copies of this volume, write to: Treasurer, Pacific Section S.E.P.M. P.O. Box 10359 Bakersfield, CA 93389 Copyright© 1984 by the Pacific Section, Society of Economic Paleontologists and Mineralogists COPYRIGHT The papers in this volume were prepared for presentation at the 1984 fieldtrip of the Pacific Section of the Society of Economic Paleontologists and Mineralogists, held in Ashland, Oregon, September 28-30, 1984. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior writtten permission of the copyright owner. Printed by Comet Reproduction Service Santa Fe Springs, CA 90670 Pacific Section Society of Economic Paleontologists and Mineralogists Field Trip Leaders TOR H. NILSEN U.S. Geological Survey Menlo Park, California MONTY A. ELLIOTT Southern Oregon State College Ashland, Oregon Pacific Section SEPM Officers - 1984 PRESIDENT ROBERT E. GARRISON University of California, Santa Cruz, California VICE PRESIDENT JEFFREY MOUNT University of California, Davis, California SECRETARY CHRISTINE CARLSON U.S. Geological Survey, Menlo Park, California TREASURER PAUL F. BERTUCCI Chevron, U.S.A., Concord, California PAST PRESIDENT KENNETH A. PISCIOTTO SOHIO Petroleum, San Francisco, California PRESIDENT ELECT J.
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