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Protecting O&C Lands: Mount Hebo
A fact sheet from Sept 2013 Bob Van Dyk Bob Van Dyk Bob Van Dyk Protecting O&C Lands Mount Hebo Location: Northern Oregon Coast Range Rising 3,175 feet from its densely forested surroundings, Mount Hebo is one of the highest peaks 11,310 Acres: in the northern Oregon Coast Range. The prominent Ecological value: Historical significance, lookout is a popular day hike for those willing to breathtaking vistas, hemlock and Douglas fir climb far above the massive hemlock and Douglas fir forests, and abundant wildflowers forest to fully experience the breathtaking scope of the Northwest’s landscape. Along the path, a traveler Economic value: Hiking and biking will find an abundance of towering trees and rare wildflowers. North of the mountain’s summit lies the last remaining roadless area in northwest Oregon, What are the O&C lands? providing a unique wild land experience in this part In 1866, Congress established a land-grant program for the Oregon of the state. This area should be forever protected & California (O&C) Railroad Co. to spur the completion of the as wilderness. rail line between Portland and San Francisco that required the company to sell the deeded land to settlers. Forty years later, when Pioneers dubbed the peak “Heave Ho” because of the the company failed to meet the terms of the agreement fully, the way it seemed to erupt from the surrounding forest. federal government reclaimed more than 2 million acres of mostly Over the years, the name “Heave Ho” morphed into forested land. Today, those O&C lands remain undeveloped and “Hebo.” These explorers discovered what Native are administered by the Bureau of Land Management and the U.S. -
Geologic Map of the Cascade Head Area, Northwestern Oregon Coast Range (Neskowin, Nestucca Bay, Hebo, and Dolph 7.5 Minute Quadrangles)
(a-0g) R ago (na. 96-53 14. U.S. DEPARTMENT OF THE INTERIOR , U.S. GEOLOGICAL SURVEY Alatzi2/6 (Of (c,c) - R qo rite 6/6-53y Geologic Map of the Cascade Head Area, Northwestern Oregon Coast Range (Neskowin, Nestucca Bay, Hebo, and Dolph 7.5 minute Quadrangles) by Parke D. Snavely, Jr.', Alan Niem 2 , Florence L. Wong', Norman S. MacLeod 3, and Tracy K. Calhoun 4 with major contributions by Diane L. Minasian' and Wendy Niem2 Open File Report 96-0534 1996 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American stratigraphic code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 1/ U.S. Geological Survey, Menlo Park, CA 94025 2/ Oregon State University, Corvallis, OR 97403 3/ Consultant, Vancouver, WA 98664 4/ U.S. Forest Service, Corvallis, OR 97339 TABLE OF CONTENTS INTRODUCTION 1 GEOLOGIC SKETCH 2 DESCRIPTION OF MAP UNITS SURFICIAL DEPOSITS 7 BEDROCK UNITS Sedimentary and Volcanic Rocks 8 Intrusive Rocks 14 ACKNOWLEDGMENTS 15 REFERENCES CITED 15 MAP SHEETS Geologic Map of the Cascade Head Area, Northwestern Oregon Coast Range, scale 1:24,000, 2 sheets. Geologic Map of the Cascade Head Area, Northwest Oregon Coast Range (Neskowin, Nestucca Bay, Hebo, and Dolph 7.5 minute Quadrangles) by Parke D. Snavely, Jr., Alan Niem, Florence L. Wong, Norman S. MacLeod, and Tracy K. Calhoun with major contributions by Diane L. Minasian and Wendy Niem INTRODUCTION The geology of the Cascade Head (W.W. -
Oregon Silverspot Recovery Plan
PART I INTRODUCTION Overview The Oregon silverspot butterfly (Speyeria zerene hippolyta) is a small, darkly marked coastal subspecies of the Zerene fritillary, a widespread butterfly species in montane western North America. The historical range of the subspecies extends from Westport, Grays Harbor County, Washington, south to Del Norte County, California. Within its range, the butterfly is known to have been extirpated from at least 11 colonies (2 in Washington, 8 in Oregon, and 1 in California). We, the U.S. Department of the Interior, Fish and Wildlife Service, listed the Oregon silverspot butterfly was listed as a threatened species with critical habitat in 1980 (USDI 1980; 45 FR 44935). We completed a recovery plan for this species in 1982 (USDI 1982). The species recovery priority number is 3, indicating a high degree of threat and high recovery potential (USDI 1983; 48 FR 43098). At the time of listing, the only viable population known was at Rock Creek-Big Creek in Lane County, Oregon, and was managed by the U.S. Forest Service (Siuslaw National Forest). The Siuslaw National Forest developed an implementation plan (Clady and Parsons 1984) to guide management of the species at Rock Creek-Big Creek and Mount Hebo (Mt. Hebo) in Tillamook County, Oregon. Additional Oregon silverspot butterfly populations were discovered at Cascade Head, Bray Point, and Clatsop Plains in Oregon, on the Long Beach Peninsula in Washington, and in Del Norte County in California. The probability of survival of four populations has been increased by management efforts of the Siuslaw National Forest and The Nature Conservancy, however, some threats to the species remain at all of the sites. -
Saddle Bag Mountain Research Natural Area: Guidebook Supplement 34
United States Department of Agriculture Saddle Bag Mountain Forest Service Research Natural Area Pacific Northwest Research Station General Technical Report Guidebook Supplement 34 PNW-GTR-731 September 2007 Reid Schuller and Ronald L. Exeter D E E R P A U RT LT MENT OF AGRICU D E E P R A U R LT TMENTOFAGRICU The Forest Service of the U.S. Department of Agriculture is dedicated to the principle of multiple use management of the Nation’s forest resources for sustained yields of wood, water, forage, wildlife, and recreation. Through forestry research, cooperation with the States and private forest owners, and management of the National Forests and National Grasslands, it strives—as directed by Congress—to provide increasingly greater service to a growing Nation. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or part of an individual’s income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, 1400 Independence Avenue, SW, Washington, DC 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. -
Geologic Sketch of Northwestern Oregon I by P
Geologic Sketch of Northwestern Oregon i By P. D. SNAVELY, JR., and H. C. WAGNER * CONTRIBUTIONS TO GENERAL GEOLOGY i GEOLOGICAL SURVEY BULLETIN 1181-M A regional summary of the Tertiary geology in the northern part of the Oregon Coast Range UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1964 CONTENTS Page Abstract. _____.__-______-___---______-______. Ml Introduction-_ _______________________________ 1 Acknowledgments _____________________________ 2 Geologic setting-______________________________ 2 Stratigraphy_._______________________________ 3 Basaltic pillow lavas and breccias._______.__. 3 Rhythmically bedded sandstone and siltstone. 6 Alkalic basalt _____________________________ 9 Marine tuffaceous siltstone and sandstone. _ _. 10 Basalt flows and breccias.__________________ 13 Gabbroic and alkalic intrusive rocks. ________ 15 Nonmarine fluviatile and lacustrine deposits.. 15 References. ____-___--_-_-____-____.____---___. 16 ILLUSTRATIONS Page PLATE 1. Generalized geologic and simple Bouguer gravity map of north western Oregon._--_-...___.____.____._____________ In pocket FIGURE 1. Chart showing the correlation between formations in the central and northern parts of the Oregon Coast Range.___.--._-__ M4 2. Basaltic pillow, lava with? radiating 'columnar jointing, Siletz River Volcanic Series of early to middle Eocene age._______ 5 3. Generalized composite stratigraphic section of Tertiary rocks, exposed in the Newport embayment, Oregon__._-___._____ 7 4. Rhythmically bedded sandstone and siltstone of the Tyee For mation of middle Eocene age.___________________________ 8 5. Boulder and cobble conglomerate overlain by columnar-jointed subaerial alkalic basalt flow of late Eocene age.-_.--_-_--__ 9 6. Marine tuffaceous siltstone of middle Oligocene age._________ 12 7. -
Appendix F.3 Scenic Features in Study Area
Population data for Study Area and individual counties (1980, 1990, 1993) Sources: 1) Center for Population Research and Census, Portland State University, 1994. 2) Oregon Census Abstract, Oregon Housing and Community Services Department, 1993. 1990: Oregon contained 1.1% of U.S. population 1990: 9-county area contained 36% of Oregon population ~ 'd (1) ::s 0...... (10 years) (3 years) >: Apr-80 Apr-90 Jul-93 80-90 90-93 t'%j County Census Census Est. Pop % Increase % Increase ...... Tillamook 21,164 21,670 22,900 1.9% 6.2% Inc. 7,892 7,969 8,505 1.0% 6.7% Uninc. 13,272 13,601 14,395 2.6% 6.8% Washington 245,860 311,654 351,000 26.7% 12.7% Inc. 105,162 162,544 180,344 64.6% 11.0% Uninc. 140,698 149,010 170,656 5.9% 14.5% Yamhill 55,332 65,551 70,900 18.5% 8.2% Inc. 34,840 43,965 48,161 26.2% 9.5% Uninc. 20,492 21,586 22,739 5.3% 5.3% Polk 45,203 49,541 53,600 9.6% 8.2% Inc. 30,054 34,310 36,554 14.2% 6.5% Uninc. 15,149 15,231 17,046 0.5% 11.9% lincoln 35,264 38,889 40,000 10.3% 2.9% Inc. 19,619 21,493 22,690 9.6% 5.6% Uninc. 15,645 17,396 17,310 11.2% -0.5% Benton 68,211 70,811 73,300 3.8% 3.5% Inc. 44,640 48,757 54,220 9.2% 11.2% Uninc. -
Geology of Oregon Orr Orr.Pdf
Fifth Edition Geology of Oregon Elizabeth L. Orr William N. Orr University of Oregon Cover: Ripple-marked sand dunes on the Oregon Coast resemble a gigantic fingerprint (photo by Gary Tepfer). Copyright ® 1964 by Ewart M. Baldwin Copyright ® 1976, 1981, 1992, 2000 by Kendall/Hunt Publishing Company ISBN 0-7872-6608-6 All rights reserved. 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 written permission of the copyright owner. Printed in the United States of America 10 98765432 Table of Contents Introduction 1 History of geologic study in Oregon 9 Blue Mountains 21 Klamath Mountains 51 Basin and Range 79 High Lava Plains 103 Deschutes-Columbia Plateau 121 Cascade Mountains 141 Coast Range 167 Willamette Valley 203 Bibliography 223 Glossary 245 Index 251 iii Dedicated to the graduates Acknowledgments Between the fourth and fifth editions of Geology of Oregon, the importance of global tectonics to the state has been ingrained even deeper. Riding on the leading edge of the moving North American plate, Oregon reflects the underlying mecha- nism of the plate collision boundary in virtually all aspects of its geology. In the seven years since the fourth edition was written, an irregular but continuing drumbeat of earthquakes reminds us of the forces beneath our feet and the need to prepare for catastrophic changes be they quakes, volcanoes, tsunamis, floods, or massive earth movements. Most profound is the discovery of irrefutable evidence that these catastrophes have been visited on the state quite regularly over the past few thousands of years as well as the absolute surety that similar disasters will oc- cur in the near and distant future. -
WOPR Salem District Resource Management Plan
Resource Management Plan 25 Salem District ROD and RMP 26 Resource Management Plan Resource Management Plan Planning Area The entire planning area analyzed in the Final Environmental Impact Statement for the Revision of the Resource Management Plans of the Western Oregon Bureau of Land Management (October 2008) includes all lands (private, local, state, and federal) in western Oregon. See Figure 1 (Entire planning area of the Western Oregon BLM resource management plan revisions). The Salem District Resource Management Plan and the coordinated resource management plans for the other districts affect BLM-administered lands in the BLM districts and counties of western Oregon that are listed in Table 1 (BLM districts and Oregon counties included in the planning area of the Western Oregon BLM resource management plan revisions). Table 1. BLM Districts And Oregon Counties Included In The Planning Area Of The Resource Management Plan Revisions BLM Districts Oregon Counties Coos Bay Benton Jackson Marion Eugene Clackamas Josephine Multnomah Lakeview (Klamath Falls Resource Area only) Clatsop Klamath Polk Medford Columbia Lane Tillamook Roseburg Coos Lincoln Washington Salem Curry Linn Yamhill Douglas Figure 1. Entire Planning Area Of The Western Oregon BLM Resource Management Plan Revisions 27 Salem District ROD and RMP The six coordinated resource management plans provide requirements for management of approximately 2,557,800 acres of federal land within the planning area. These BLM-administered lands are widely scattered and represent only about 11% of the planning area. Of the approximately 2,557,800 acres administered by the BLM, approximately 2,151,200 acres are managed primarily under the O&C Act and are commonly referred to as the O&C lands. -
Grass Mountain Research Natural Area Guidebook Supplement 32
United States Department of Agriculture Grass Mountain Forest Service Research Natural Area Pacific Northwest Research Station General Technical Report PNW-GTR-732 Guidebook Supplement 32 September 2007 Reid Schuller and Ronald L. Exeter D E E R P A U RT LT MENT OF AGRICU The Forest Service of the U.S. Department of Agriculture is dedicated to the principle of multiple use management of the Nation’s forest resources for sustained yields of wood, water, forage, wildlife, and recreation. Through forestry research, cooperation with the States and private forest owners, and management of the National Forests and National Grasslands, it strives—as directed by Congress—to provide increasingly greater service to a growing Nation. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or part of an individual’s income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, 1400 Independence Avenue, SW, Washington, DC 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. Authors Reid Schuller is a consulting plant ecologist living in Bend, Oregon; Ronald L. -
Northern Coast Range Adaptive Management Area Guide
U.S. Department of the Interior Bureau of Land Management Salem District Office Tillamook Resource Area 4610 Third Street Tillamook, Oregon 97141 U.S. Department of Agriculture Sluslaw National Forest Hebe Ranger District 0 31525 Highway 22 Hebe, Oregon 97122 January 1997 0 0 Northern Coast Range 0 Adaptive Management Area Guide J 0 0 0 0 0 0 ) :.J f1 l l 0 [) 0 [ ] f1 d q~ d 0 a 0 [j a a q 9 0 0 BLMIORIWAIPL·97/008+179a 0 0 0 0 0 0 0 0 0 0 0 Northern Coast Range Adaptive Management Area February I 0, 1997 Dear AMA Partner, The Northern Coast Range Adaptive Management Area (AMA) came into being in the summer of 1994 with the signing of the President's Northwest Forest Plan. This document, the AMA Guide, was prepared to help citizens, scientists, and BLM and Forest Service 0 managers to work together in planning and implementation of AMA activities. 0 To provide more detailed infonnation about the AMA, we are in the process of preparing several documents: A bio-physical assessment, a social-economic assessment, a cultural historical assessment, and a research and learning assessment Copies will be available on request. 0 We hope the AMA Guide will encourage all those interested in forest land management to look for new ways of doing business. We also hope the Guide will encourage us to continue to learn from one another and to take full advantage of the opportunities inherent in an adaptive management area. We welcome your participation. 0 For further infonnation, or to fmd out how you can participate in AMA activities, please 0 contact Warren Tausch, Northern Coast Range AMA Coordinator, at 503-815-1124, or any 0 any of the AMA staff listed in Appendix H at the back of the Guide. -
Early Oligocene Intrusions in the Central Coast Range of Oregon
AN ABSTRACT OF THE THESIS OF Jeremiah Oxford for the degree of Master of Science in Geology presented on October 13, 2006. Title: Early Oligocene Intrusions in the Central Coast Range of Oregon: Petrography, Geochemistry, Geochronology, and Implications for the Tertiary Magmatic Evolution of the Cascadia Forearc Abstract approved: Adam Kent The Early Oligocene Oregon Coast Range Intrusions (OCRI) consist of gabbroic rocks and lesser alkalic intrusive bodies that were emplaced in marine sedimentary units and volcanic sequences within a Tertiary Cascadia forearc basin. The alkalic intrusions include nepheline syenite, camptonite, and alkaline basalt. The gabbros occur as dikes and differentiated sills. Presently, erosional remnants of the intrusions underlie much of the high topography along the axis of the central Oregon Coast Range. The intrusive suite is most likely associated with Tertiary oblique rifting of the North America continental margin. Dextral shear and extension along the continental margin may have been a consequence of northeast-directed oblique Farallon plate convergence. However, while both the gabbroic and alkaline OCRI appear to be related to tectonic extension, major and trace element geochemistry reveal separate parental magma sources between the two suites. The OCRI are part of a long-lived (42-30 Ma) magmatic forearc province that includes the Yachats Basalt and Cascade Head Basalt. The timing of Cascadia forearc magmatism correlates with a significant decrease in convergence rates between the Farallon and North American plates from 42 to 28 Ma. The OCRI are also contemporaneous with magmatism that occurred over a broad area of the Pacific Northwest (e.g. Western Cascades, John Day Formation). -
Map Extent 13 17 16 Grandrond E Tribal Eland S 8 9 10 11 Eola Village
D R L D A N O Travel Management D C 2 29 28 27 30 29 1 6 M Braun 28 1 31 32 33 31 32 6 5 4 3 34 35 36 31 32 33 33 33 34 35 Long Mountain Area 2 36 Tater Hill 12 1 SADDLE MTN MANAGEMENT 31 32 ClatsopCounty 36 SADDLE MTN 34 35 36 31 32 33 D 35 ColumCounty bia 34 7 11 6 11 6 5 4 4 N T. 12 R 3 2 5 4 Wildlife Management 7 8 1 TillamookCounty UNIT MANAGEMENT 6 5 4 3 2 1 3 2 1 6 5 4 K 3 2 12 1 6 5 Wash ing tonCounty R Sunset Highway Forest Wayside 4 3 2 1 6 5 9 10 4 3 18 O 10 Unit UNIT 10 7 11 7 8 8 17 15 14 F 11 12 9 18 God's Valley Salmonberry 7 8 9 12 17 10 Hoffman Hill H 13 16 14 13 11 12 Coyote Corner 7 8 26 Sunset Camp Neahkahnie 15 9 ¤£ 7 8 PrivateCooperators 19 T FOSS RD 10 11 12 9 10 11 12 7 !!!!!!!!! Mountain R 8 9 10 17 16 20 Wildlife Area 18 17 !!!!!!!!! 21 O 18 18 17 22 23 15 14 13 16 15 Tophill 24 14 !!!!!!!!! N 19 Wakefield 16 13 18 Giustina Land & Timber 20 Belfort 15 14 13 17 21 Green Mountain !!!!!!!!! 22 16 23 24 15 14 13 18 17 16 Neahkahnie 15 14 13 !!!!!!!!! Beach Manzanita 18 17 16 15 29 28 27 !Nehalem 19 20 19 20 Company P! P 21 22 23 24 21 22 !!!!!!!!! 19 Enright 23 26 25 20 22 24 19 27 30 29 21 23 24 20 L.L "Stub" !!!!!!!!! 28 27 21 26 25 22 23 19 24 20 21 22 23 20 !!!!!!!!! Mohler Stewart State 24 19 21 22 T.