DOCSLIB.ORG

Zircon U-Pb Ages and Petrologic Evolution of the English Peak Granitic Pluton: Jurassic Crustal Growth in Northwestern California GEOSPHERE; V

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Zircon U-Pb Ages and Petrologic Evolution of the English Peak Granitic Pluton: Jurassic Crustal Growth in Northwestern California GEOSPHERE; V Research Paper THEMED ISSUE: Active Margins in Transition—Magmatism and Tectonics through Time: An Issue in Honor of Arthur W. Snoke GEOSPHERE Zircon U-Pb ages and petrologic evolution of the English Peak granitic pluton: Jurassic crustal growth in northwestern California GEOSPHERE; v. 12, no. 5 W.G. Ernst1, Eric S. Gottlieb1, Calvin G. Barnes2, and Jeremy K. Hourigan3 1Geological Sciences, Stanford University, Building 320, Stanford, California 94305-2115, USA doi:10.1130/GES01340.1 2Geosciences, Texas Tech University, MS 1053, Science Building 125, Lubbock, Texas 79409-1053, USA 3Earth and Planetary Sciences, University of California–Santa Cruz, 1156 High Street, Santa Cruz, California 95064, USA 6 figures; 1 table; 1 supplemental file CORRESPONDENCE: wernst@ stanford .edu ABSTRACT incorporated into the evolving Jurassic continental crust. It took place prior to the earliest Cretaceous onset of westward transport of the stack of Klamath CITATION: Ernst, W.G., Gottlieb, E.S., Barnes, In the central Klamath Mountains, the English Peak plutonic complex (EPC) allochthons relative to the active Jura-Cretaceous Sierran calc-alkaline arc. C.G., and Hourigan, J.K., 2016, Zircon U-Pb ages and petrologic evolution of the English Peak granitic invaded the faulted contact between the outboard Eastern Hayfork and inboard pluton: Jurassic crustal growth in northwestern North Fork terranes of the Western Paleozoic and Triassic Belt (WTrPz). This California: Geosphere, v. 12, no. 5, p. 1422–1436, calc-alkaline igneous complex is composed of two small, ~1–2-km-diame- INTRODUCTION TO THE REGIONAL GEOLOGY doi: 10 .1130 /GES01340.1. ter, relatively mafic satellitic plutons peripheral to the younger, much larger, ~10–15-km-diameter English Peak zoned granitic pluton. The EPC magmas The iconic Klamath Mountains Province provides a classic example of the Received 30 March 2016 Revision received 8 July 2016 were mantle derived and reflect temporary residence and mixing at various Phanerozoic growth of transitional continental crust. Its imbricated lithotec- Accepted 23 August 2016 depths in the overlying crust, with initial storage and modification near the tonic belts testify to successive (1) arrival of far-traveled oceanic crust and Published online 9 September 2016 Moho, and uppermost crustal emplacement at 5–10 km depths. Phase assem- overlying deep-sea sediments, (2) underflow and off-loading along the conver- blages suggest pre-emplacement magma storage at a depth of ~20–25 km gent plate junction, (3) suprasubduction-zone arc generation, and (4) erosional for the early satellitic plutons, versus ~15–20 km for samples from the larger supply of arc debris to the accreting ophiolitic basement terranes. This late zoned granitic pluton. We obtained zircon U-Pb geochronologic results (re- Paleozoic–Mesozoic development of northern California was typified by chiefly ported as internal and external weighted-mean 207Pb-corrected 206Pb/238U ages, margin-parallel slip, episodic suturing of ophiolitic complexes and their spa- 95% confidence level) from seven samples in the complex via laser ablation– tially associated chert-argillite terranes, concurrent construction of volcanic- inductively coupled plasma–mass spectrometry (LA-ICP-MS). The 172.3 ± 2.0 plutonic arcs, plus the aprons of derived clastic sediments (Saleeby, 1981, [3.7] Ma Uncles Creek and 166.9 ± 1.6 [3.4] Ma Heiney Bar satellitic plutons 1982, 1983; Ernst et al., 2008). range from gabbro–quartz diorite to granodiorite in bulk-rock composition. The The terrane assembly of the Klamath Mountains has been correlated with main English Peak pluton consists of an early stage of gabbro-tonalite (three the northern Sierran Foothills based on similar rock types, structures, terrane samples: 160.4 ± 1.1 [3.1] Ma, 158.1 ± 1.1 [3.1] Ma, and 158.0 ± 1.2 [3.1] Ma) ages, the oceanward assembly of successively younger geologic units, and and a late stage (two samples: 156.3 ± 1.3 [3.1] Ma and 155.3 ± 1.2 [3.0] Ma) their times of orogeny (Davis, 1969; Davis et al., 1980; Wright and Fahan, 1988; passing inward from tonalite through granodiorite to a central zone of granite. Wright and Wyld, 1994; Irwin, 2003). However, the accreted Sierran Foothill The 172 Ma age of the Uncles Creek pluton makes it coeval with Middle Ju- terranes stand nearly vertically, whereas the Klamath thrust sheets root gently rassic Western Hayfork arc magmatism. In contrast, Heiney Bar and the main to the east. Scattered, chiefly calc-alkaline igneous activity characterized the English Peak igneous ages overlap some of the oldest and youngest compo- Late Triassic margin, but most lithologic sections of late Paleozoic–early Meso- nents, respectively, of the Middle to Late Jurassic Wooley Creek plutonic suite. zoic age are oceanic in their genesis. However, a major Andean arc began to Study of this multiple-intrusion complex provides an illuminating example of form in the Sierra Nevada and Klamath Mountains by ca. 175 Ma during trans- the gradual intermediate-to-felsic modification of the upper crust in the central pressive eastward underflow of oceanic lithosphere (Dunne et al., 1998; Irwin, Klamath Mountains. Inherited zircon ages of ca. 172 Ma in two other EPC sam- 2003; Dickinson, 2008). This magmatic arc shed clastic detritus into the realm ples indicate potential Middle Jurassic crustal sources or contaminants. Geo- of the accreting ophiolitic basement terranes of both the Klamath Mountains chronologic correlation of the EPC with geologic histories of other Klamath ter- and Sierran Foothills (Miller and Saleeby, 1995; Scherer et al., 2006). ranes provides fresh insights for understanding spatial and temporal elements Figure 1 presents the regional geology of the Klamath Mountains Province, of Middle to Late Jurassic arc magmatism in the Klamath Mountains sector of as well as published geochronology of various mafic-to-felsic plutons. The For permission to copy, contact Copyright the Cordilleran margin. This igneous activity illuminates some petrotectonic orogen is a terrane collage consisting of four major lithotectonic zones. From Permissions, GSA, or [email protected]. processes whereby accreted ophiolitic basement terranes were modified and east to west, these are the Eastern Klamath Belt, the Central Metamorphic Belt, © 2016 Geological Society of America GEOSPHERE | Volume 12 | Number 5 Ernst et al. | U-Pb ages of the English Peak pluton Downloaded from http://pubs.geoscienceworld.org/gsa/geosphere/article-pdf/12/5/1422/3335013/1422.pdf 1422 by guest on 30 September 2021 123°W ION 1423 124 °W 43°N EXPLANAT 43°N Cretaceous overlapassemblagesincludes GreatV alleys equenceand HornbrookFormation WesternK lamath terraneincludes SmithR iver, RogueValley, DryB utte, and Briggs Creek subterranes MayC reek terrane tain terrane White Rock CondreyMoun terrane 156 Rattlesnake Creek Western Hayfork terrane Chetco complex er Eastern Hayfork terrane 155–160 Wim NorthF orkt errane s 160 as FortJ ones terrane P Gold Hill ts n 148 ra 39 1 Central Meta morphicterrane G Jacksonville 154 MEDFORD Reddingsubterrane Research Paper ck nK lamath terrane a Trinitys ubterrane Easter b Gray Squaw Mtn Yrekas ubterrane 174 late 157 Ashland Buckskin Pk main granodioritic suite 160 H 148 main late stage 161 152–156 ttgsuite 42°N Siskiyou suite 42°N 163 Thompson Ridge Vesa Bluffs Wooley Creeks uite Bear Pk Slinkard Chetco complex Lower Coon Mtn 167 162 167 Ironside Mtn. batholith 142 & 145 148 Bear 4 YREKA western Hayfork-related plutons Mtn 4 Blue Ridge 1 148* Fig. 2 RattlesnakeC reek-related plutons Pony Pk 144 Summit Shelly Lake Yellow Butte Valley k 159 136 150 Skookum Gulch Cree 567 y Ukonom Mtn oole n W Heather Lk China Mt 165 Somes Bar 2 H 167 193–208 CP mafic 16 Pk 415 Z complex Porcupine Lk Heiney n Pk Orleans Mtn English156 sia Bar s 159 171 160–164 u R 403 Pk 404 FS y 174 Deadman Pk 167 Indian Rocks ragg C 138 161 Castle Crags Youngs Pk 142 431 Bonanza King 136 China Ck 13 149 9 Hogback Mtn Denny complex Billy’s Pk p~167 41°N 168 Canyon Cr Sugar Pine Kettle Mtn 140 Caribou Mtn p~120–130 Horseshoe Lake b133 East Fork 149h, 164b Gibson Pk W China Pk Granite Pk Monument Pk Ammon Ridge Price Ck on Point 170 Pige Pit River 147–151 h 169 & 171 260 Iro nsi de Mtn Mule Mtn Sha Saddle Gulch sta h 189 B 400 REDDING 170 al ly 136 Bear ood 169 w Wallow ld 193 Wi Basin Gulch Glen Creek 170 147–151 E Beegum W 207 t S 5 Number Walker Poin | 198 169 2 °W White Rock Star Mtn Scale 12 124°W 193 0 10 20 30 MILES °W 123 0 10 20 30 KILOMETERS 12 Volume | Figure 1. Lithotectonic divisions of the Klamath Mountains, after Irwin and Wooden (1999) and with additions from Snoke and Barnes (2006). The Fort Jones terrane is also termed the Stuart Fork terrane. Plutons are color coded according to age group. In the key, “ttg suite” refers to earliest Cretaceous tonalite-trondhjemite-granodiorite plutons. Numbers associated with each pluton indicate ages (Ma) determined40Ar/39 Arby onU-Pb hornblende zircon analyses and plagioclase, except for those indicated by t (U-Pb on titanite), h and b (K-Ar on hornblende and biotite, respectively), and H and p ( respectively). GEOSPHERE Ernst et al. | U-Pb ages of the English Peak pluton Downloaded from http://pubs.geoscienceworld.org/gsa/geosphere/article-pdf/12/5/1422/3335013/1422.pdf by guest on 30 September 2021 Research Paper the Western Paleozoic and Triassic Belt, and the Western Jurassic Belt (Irwin, STATEMENT OF THE PROBLEM 1960). Individual allochthons that constitute each belt are dominantly upright. Most are bounded by gently east-dipping, mid-Paleozoic to Late Jurassic thrust Multiple, discrete phases of arc magmatism built the English Peak plutonic faults (Irwin, 1994).
Load more

Recommended publications
  • 1 Klamath Mountains Province Summer Steelhead
    KLAMATH MOUNTAINS PROVINCE SUMMER STEELHEAD Oncorhynchus mykiss irideus Critical Concern. Status Score = 1.9 out of 5.0. Klamath Mountain Province (KMP) summer steelhead are in a state of long-term decline in the basin. These stream-maturing fish face a high likelihood of extinction in California in the next fifty years. Description: Klamath Mountains Province (KMP) summer steelhead are anadromous rainbow trout that return to select freshwater streams in the Klamath Mountains Province beginning in April through June. Summer steelhead are distinguishable from winter steelhead by (1) time of migration (Roelofs 1983), (2) the immature state of gonads at migration (Shapovalov and Taft 1954), (3) location of spawning in higher-gradient habitats and smaller tributaries than other steelhead (Everest 1973, Roelofs 1983), and more recently, genetic variation in the Omy5 gene locus (Pearse et al. 2014). Summer steelhead are nearly identical in appearance to the more common winter steelhead (see Northern California coastal winter steelhead). Taxonomic Relationships: For general relationships of steelhead, see Northern California coastal winter steelhead account. In the Klamath River Basin, salmonids are generally separated primarily by run timing, which has been shown recently to have a genetic basis (Kendall et al. 2015, Arciniega et al. 2016, Williams et al. 2016, Pearse et al. In review). The National Marine Fisheries Service (NMFS) does not classify Klamath River basin steelhead “races” based on run- timing of adults, but instead recognizes two distinct reproductive “ecotypes.” Steelhead ecotypes are populations adapted to specific sets of environmental conditions in the Klamath Basin based upon their reproductive biology and timing of spawning (Busby et al.
    [Show full text]
  • Trail Conditions and Descriptions, Orleans R.D. Administered Areas of the Klamath Mountains, Six Rivers National Forest (Revised August 31, 2021)
    Trail Conditions and Descriptions, Orleans R.D. Administered Areas of the Klamath Mountains, Six Rivers National Forest (Revised August 31, 2021) This document is made available to the public at KlamathMountainTrails.us . There you can find additional information on trails in the Klamath Mountains of northern California, KML files showing the correct locations of trails, and more. Notes for the 2021 season: In response to ongoing wildfires, the U.S. Forest Service has closed all national forests in California, in their entirety, to all public entry. Earlier closure orders closed the Marble Mountain and Trinity Alps Wildernesses in their entirety. The expiration dates of the closures are subject to change, so previously-announced expiration dates have little meaning. This information is current as of Aug. 31, 2021. Check with the U.S. Forest Service for the up-to-date status. As of this writing, the 2021 McCash Fire has burned over the areas of most of the described trails within the Marble Mountain Wilderness, with the notable exception of Wooley Creek Trail. Please take this into account when making plans for visits in late 2021 or 2022. Some suggestions on places to visit: o The Haypress Trail is passable for backpackers with only modest difficulties all the way from the trailhead to Spirit Lake. The most remote part of the trail offers truly spectacular views of vast, rugged parts of the Marble Mountain Wilderness. The continuation of the trail in the Salmon-Scott Rivers Ranger District appears to be in fairly rough shape, so check with that district office before traveling that part of the trail.
    [Show full text]
  • 1993. in Mesozoic Paleogeography of the Western United States-II, Pacific
    """"",,:" . JURASSIC OROGENYIN THE KLAMATH MOUNTAINS: A GEOCHRONOLOGICALANALYSIS '- Bradley R. Hacker W. G. Ernst Department of Geology School of Earth Sciences Stanford University Stanford University Stanford, CA 94305-2115 Stanford, CA 94305-2110 ABSTRACT others, 1985; Mortimer, 1985; Zucca and others, 1986; Fuis and others, 1987). The Jurassic growth of Klamath Klamath terranes shown in Figure 1 generally continental crust from oceanic materials has have east-dipping bedding and foliation and conventionally been considered the result of west-vergent folds; most are s~parated by two discrete orogenies, the "Siskiyou" and west-directed thrust faults. Terranes "Nevadan". Geochronologic data are now related to the main theme of this paper are numerous enough to begin to recognize that described below. the metamorphic and deformational episodes are instead a broad continuum of events whose The basis for this paper is the characteristics varied in place and time and radiometric ages listed in Table 1 and Figure were closely linked with areas of active 2. All zircon ages summarized here for magmatism. Magmatism was widespread at -200 igneous rocks have been interpreted as Ma, and by -170 Ma, led to the construction crystallization ages. On the other hand, of two enormous volcanoplutonic arcs, the K/Ar and 40Ar/39Ar ages generally are minimum Western Hayfork and North Fork-Salmon River. ages for the crystallization cf plutonic Northwest-southeast extension in the northern rocks because entrapment of argon in crystals Klamaths from 167-155 Ma was coincident with occurs considerably below solidus the crystallization of voluminous plutonic temperatures. Crystallization times of and volcanic rocks of the Wooley Creek and rapidly cooled hypabyssal and volcanic rocks Western Klamath suites.
    [Show full text]
  • Presented by the Salmon River Restoration Council Some of You May Be Thinking “So Where Is Salmon River?”
    Salmon River Cooperative Noxious Weed Program (CNWP) Presented by the Salmon River Restoration Council Some of you may be thinking “So where is Salmon River?” Isn’t it in Idaho, Washington, or Oregon? The answer is: Northern California Salmon River Location 751 sq mi Salmon River Subbasin Godfrey Ranch where I’ve lived for 27 years My house has burned twice in forest fires Salmon/Klamath Confluence A E C W O I S L Y D S L T A E N M D S Katamin - “Center of the World” to the Karuk The Salmon River Wildlands Ecosystem North Fork from Etna Summit The Salmon River is one of the most biologically intact Subbasins in the west. It is the largest cold-water contributor to the Klamath River, and known as one of the cleanest rivers in the state. This 751 sq. mile watershed is entirely within the Klamath National Forest and is considered a key watershed by the Forest Service. Watershed analysis has been completed for the entire Subbasin, with the exception of Wooley Creek. The land base in the watershed includes: 98% Public Lands-USFS with 45% in wilderness, and 67% Karuk Ancestral Lands. Four communities lie widely dispersed within this watershed. There are approximately 250 year round and 100 part time residents in the subbasin. The Salmon River is documented as having an area in the Russian Wilderness that is one of the most diverse area for conifer species on Earth. It has long been known for its exceptionally high quality waters and is designated under the Wild and Scenic Act for the outstanding fisheries resources.
    [Show full text]
  • Salmon, Steelhead, and Trout in California
    ! "#$%&'(!")**$+*#,(!#',!-.&/)! 0'!1#$02&.'0#! !"#"$%&'(&#)&*+,-.+#"/0&1#$)#& !"#$%&#'"(&))*++*&,$-"./"012*3&#,*1"4#&5'6"7889" PETER B. MOYLE, JOSHUA A. ISRAEL, AND SABRA E. PURDY CENTER FOR WATERSHED SCIENCES, UNIVERSITY OF CALIFORNIA, DAVIS DAVIS, CA 95616 -#3$*!&2!1&')*')4! !0:;<=>?@AB?;4C"DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"E" F;4G<@H04F<;"DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"I" :>!B!4J"B<H;4!F;C"KG<LF;0?"=F;4?G"C4??>J?!@""DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"7E" :>!B!4J"B<H;4!F;C"KG<LF;0?"CHBB?G"C4??>J?!@"DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"E7" ;<G4J?G;"0!>FM<G;F!"0<!C4!>"=F;4?G"C4??>J?!@""DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"IE" ;<G4J?G;"0!>FM<G;F!"0<!C4!>"CHBB?G"C4??>J?!@""DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"NO" 0?;4G!>"L!>>?P"C4??>J?!@"DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"OI" 0?;4G!>"0!>FM<G;F!"0<!C4"C4??>J?!@""DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"Q7" C<H4JR0?;4G!>"0!>FM<G;F!"0<!C4"C4??>J?!@""DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"QS" C<H4J?G;"0!>FM<G;F!"0<!C4"C4??>J?!@""DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"9O" G?CF@?;4"0<!C4!>"G!F;T<="4G<H4"DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"SQ"
    [Show full text]
  • CRAPO CREEK WATERSHED USDA Forest Service Klamath National
    CRAPO CREEK WATERSHED Condition and Improvement Needs Inventory USDA Forest Service Klamath National Forest CRAPO CREEK WATERSHED CONDITION AND IMPROVEMENT NEEDS INVENTORY FINAL REPORT FOR INTERAGENCY AGREEMENT # 14-48-0001- 93522 U.S.D.A FOREST SERVICE KLAMATH NATIONAL FOREST SALMON RIVER RANGER DISTRICT Prepared by Larry Alexander, Roberta Van de Water and Orion Dix June, 1994 TABLE OF CONTENTS ABSTRACT INTRODUCTION METHODS Channel Inventory Watershed Condition Inventory Aquatic Habitat Inventory Analysis Areas RESULTS Beneficial Uses Watershed Conditions Past and Present Watershed Disturbance Channel and Riparian Conditions Assessment of Current Conditions by Subwatershed CONCLUSIONS RECOMMENDATIONS ACKNOWLEDGEMENTS SUMMARY OF EXPENDITURES REFERENCES APPENDIX A : Aquatic Habitat Inventory APPENDIX B : Field Note Summary by Reach APPENDIX C : Watershed Improvement Needs Data Sheets APPENDIX D : Order 3 Soil Associations APPENDIX E : Photographs and Photo Index APPENDIX F : 1:24,000 Scale Inventory Maps with Overlays ABSTRACT Crapo Creek is major tributary of the main stem of the Salmon River. During the summer of 1993, a Watershed Condition and Improvement Needs Inventory was conducted in the Crapo Creek watershed. The inventory included stream stability rating, channel morphology classification, aquatic habitat survey and upslope watershed condition assessment. The objectives of the inventory were to identify streams and riparian areas, assess their conditions and the processes influencing these conditions, and prescribe restoration projects where appropriate. The terrain in this watershed is typically steep and rugged. Crapo Creek and its tributaries are predominantly high gradient streams. Many of the channels are in inner gorges with extremely steep sideslopes immediately adjacent to water courses. Throughout the watershed there are outcrops of bedrock in the channel, but much of the hillslope material is unstable and prone to landsliding.
    [Show full text]
  • Bigfoot Trail • V3.2017 Map Set & Trail Description Michael Kauffmann Jason Barnes
    The Bigfoot Trail • V3.2017 Map Set & Trail Description Michael Kauffmann Jason Barnes Bigfoot Trail Explore the biodiversity of the Klamath Mountains 32 conifer species, 360 miles, 6 wilderness areas, and 1 national park BACK COUNTRY PRESS Humboldt Co., CALIFORNIA Order this map set online at www.backcountrypress.com or www.bigfoottrail.org - limited edition print also available. © Copyright 2015 Backcountry Press - updated 4.26.2017 All rights reserved. No part of this publication may be reproduced, stored in retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise without written permission from the author. All photos and text by Michael Kauffmann Book layout and maps by Backcountry Press Cartography by Jason Barnes ( [email protected]) Consulting and GIS work by Justin Rohde Editing and trail notes by Sage Clegg (sageclegg.com) and Melissa Spencer GPX Coordinates by Sage Clegg Cover image: Jeffrey Kane hiking the BFT in the Red Buttes Wilderness Published by Backcountry Press | Kneeland, California ISBN 978-1-941624-04-3 BIGFOOT TRAIL - A WARNING The Bigfoot Trail is just a concept as of 2017. In essence it does not exist in the field and its name has been cho- sen to present the information contained in the website and this route description as a suggested way to travel, by foot, through the Klamath Mountains. The route is comprised of existing hiking trails and vehicle roads on public lands as a legal rights-of-way. Any person electing to follow the Bigfoot Trail does so voluntarily, yet ex- clusively, for the enjoyment of one of the most diverse and wild temperate coniferous forests on Earth.
    [Show full text]
  • Orleans/Somes Bar Community Wildfire Protection Plan
    OOrrlleeaannss//SSoommeess BBaarr CCoommmmuunniittyy WWiillddffiirree PPrrootteeccttiioonn PPllaann A Collaborative Fire Protection Strategy for the Communities of Orleans and Somes Bar Coordinated by the Orleans/Somes Bar Fire Safe Council Orleans, California January 2012 Acknowledgements Thank you to Cybelle Immitt, Lucy Salazar, Bill Tripp, Mark Rodgers, Hugh Scanlon, Tracy Katelman, Jim Villeponteaux, Max Creasy, Ben Riggan, Frank Lake, Penny Eckert, Todd Salberg, Roberta Coragliotti, Tom Bouse, Chris Root, Nancy Bailey, Will Harling, and Luna Latimer Funding provided by a National Fire Plan grant from the USDA Forest Service through the California Fire Safe Council and The County of Humboldt Orleans/Somes Bar Community Wildfire Protection Plan 1. OBJECTIVES OF A COMMUNITY WILDFIRE PROTECTION PLAN: ..................................................................................1 INTRODUCTION: .....................................................................................................................................................................................1 ABOUT THE OSB FSC............................................................................................................................................................................3 DECISIONMAKERS..................................................................................................................................................................................4 FEDERAL AND TRIBAL AGENCIES ..........................................................................................................................................................4
    [Show full text]
  • Mary M. Donate1, Wflliam N. Hate2, Robert C Jaehens1, and David B. Smith1 Under the Provisions of the Wilderness
    DEPARTMENT OF THE INTERIOR TO ACCOMPANY MAP MF-1452-B UNITED STATES GEOLOGICAL SURVEY MINERAL RESOURCE POTENTIAL OF THE MARBLE MOUNTAIN WILDERNESS, SKKIYOU COUNTY, CALIFORNIA SUMMARY REPORT By Mary M. Donate1, Wflliam N. Hate2, Robert C Jaehens1, and David B. Smith1 STUDIES RELATED TO WILDERNESS Under the provisions of the Wilderness Act (Public Law 88-577, September 3, 1964) and the Joint Conference Report on Senate Bill 4, 88th Congress, the U.S. Geological Survey and the U.S. Bureau of Mines have been conducting mineral surveys of wilderness and primitive areas. Areas officially designated as "wilderness," "wild," or "canoe" when the act was passed were incorporated into the National Wilderness Preservation System, and some of them are presently being studied. The act provided that areas under consideration for wilderness designation should be studied for suitability for incorporation into the Wilderness System. The mineral surveys constitute one aspect of the suitability studies. The act directs that the results of such surveys are to be made available to the President and the Congress. This report discusses the results of a mineral survey of the Marble Mountain Wilderness, Klamath National Forest, Siskiyou County, California. The area was established as a Primitive Area in 1931, reclassified as a Wilderness Area in 1953, and incorporated into the Wilderness Preservation System in 1964. SUMMARY The Marble Mountain Wilderness has a low potential for placer gold, chromite, and marble. Specific areas of mineral resource potential are: Gold placer terrace deposits along the North Fork Salmon River, chromite deposits in the Shackleford Creek mining district, and marble deposits in the Marble Mountain mining district.
    [Show full text]
  • Attachment 12 a Proposed Strategy to Recover Endemic Spring-Run Chinook Salmon Populations and Their Habitats in the Klamath
    ATTACHMENT 12 A PROPOSED STRATEGY TO RECOVER ENDEMIC SPRING-RUN CHINOOK SALMON POPULATIONS AND THEIR HABITATS IN THE KLAMATH RIVER BASIN' Prepared by John R. West* USDA-FOREST SERVICE Klamath National Forest 1312 Fairlane Road, Yreka CA USA 96097 ----------------------------------- '-Submitted to USDA-FS Pacific Southwest Region, October 1991 *-Klamath National Forest Fisheries and Earth Science Staff Officer;Am. Fish. Soc. Certified Fisheries Scientist No. 1912 TABLE OF CONTENTS ACKNOWLEDGEMENTS INTRODUCTION EXISTING CONDITIONS DESIRED FUTURE CONDITIONS MANAGEMENT OBJECTIVES ACTION STRATEGY STRATEGY IMPLEMENTATION REFERENCES CITED ACKNOWLEDGEMENTS The author wishes to acknowledge the following individuals for their diligence in adding to the contents of the strategy, and their thorough review and meeting participation. Without the assistance of these committee members, the development of this strategy would have been less complete. Review and steering committee participants: Leaf Hillman (Karuk Tribe of California) Felice Pace (Klamath Forest Alliance), David Wills (U.S. Fish and Wildlife Service),Carl Harral (California Department of Fish and Game),Rod McGinnis (National Marine Fisheries Service), Dr. Roger Barnhart (HSU Cooperative Fishery Research Unit), Charles Thompson (Salmon River resident), Jerry Boberg (Six Rivers National Forest), Michael Lee (USFS District Ranger Salmon River R.D.),Sam Wilbanks (USFS District Ranger Ukonom R.D.), Alan Olson (USFS,Klamath National Forest), Greg DesLaurier (USFS, Klamath National Forest). Other draft reviewers included Lynn Decker (USFS, Pacific Southwest Region) and Mary Faustini (USFS, Salmon River R.D.), Connie Neff (USFS, Xlamath National Forest), and Dr.John Mencke (U.C. Davis),their comments are appreciated. Reference of the above individuals participation in the review of this strategy is not intended to imply that they agree with or support all proposed actions.
    [Show full text]
  • FY 2013 Monitoring Report
    USDA FOREST SERVICE Fiscal Year 2013 Monitoring and Evaluation Report Klamath National Forest Patricia Grantham, Forest Supervisor 9/22/2014 This report is located on the Forest Service website at: http://www.fs.usda.gov/detail/klamath/landmanagement/planning/?cid=fsm8_049843 USDA is an equal opportunity provider and employer. Klamath National Forest FY 2013 Monitoring and Evaluation Report Table of Contents Introduction ............................................................................................................................................................... 3 Geology ...................................................................................................................................................................... 3 Soils ............................................................................................................................................................................ 5 Water Quality ............................................................................................................................................................ 6 Air Quality .................................................................................................................................................................. 7 Biological Diversity .................................................................................................................................................... 8 Sensitive Plants .........................................................................................................................................................
    [Show full text]
  • American River Eligibility Report, California
    TABLE I. SUMMARY OF RIVER ELIGIBILITY MILES MILES MIES PROPOSED FOR FOUND FOUND RIVER SYSTEM __INCLUSION__ ELIGIBLE INELIGIBLE Klamath River System 286 286 <1 Trinity River System 203 203 0 Smith River System 3,100 340 2,760 Eel River System 394 394 0 American River System _____23_____ _____23_____ _____0_____ TOTAL 4,006 1,246 2,760 TABLE II. LISTING OF ELIGIBLE RIVER SEGMENTS KLAMATH RIVER SYSTEM SMITH RIVER SYSTEM Klamath River Lower Smith River North Fork Smith River Scott River Salmon River Rowdy creek Still Creek North Fork Salmon River Dominie Creek Diamond Creek South Fork Salmon River Savoy Creek High Plateau Creek Wolley River Little Mill Creek Bear Creek Bummer Lake Creek North Fork Diamond Creek TRINITY RIVER SYSTEM Mill Creek Lower West Branch of South Fork Smith River Trinity River Mill Creek Craigs Creek North Fork Trinity East Fork of Mill Creek Coon Creek South Fork Trinity Rock Creek New River Middle Fork Smith River Gordon Creek Canthook Creek EEL RIVER SYSTEM Myrtle Creek Goose Creek Hardscrable Creek East Fork Goose Creek Kelly Creek Hurdygurdy Creek Patrick Creek Jones Creek Shelly Creek Muzzleloader Creek East Fork Patrick Creek Buck Creek West Fork Patrick Creek Quartz Creek Monkey Creek Williams Creek Siskiyou Fork Smith River Prescott Fork Smith River South Siskiyou Fork Smith River Packsaddle Creek Griffin Creek Knopki Creek CALIFORNIA 2a(ii) WSR River Descriptions/Agency Responsibility River Segment Mileage Agency Eel NF – Soldier Basin to Forest Boundary (FB) 15 USFS (SRNF) NF – FB to confluence with Main Stem 24 NPS (includes Round Valley Indian Reservation lands) MF – Headwaters to FB (Confluence with Black Butte Creek and MF Eel.
    [Show full text]