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Upper Klamath Lake

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Series: GSA Special Papers
Published: 01 April 2009
DOI: 10.1130/2009.2447(05)
... We present marine high-resolution seismic reflection data from Upper Klamath Lake, Oregon, to discern the underlying structure and estimate Quaternary slip rates in this actively extending Basin and Range system. The sediment patterns and structures imaged on our seismic profiles reveal...
Journal Article
Published: 01 February 2000
Bulletin of the Seismological Society of America (2000) 90 (1): 243-247.
...Steven M. Colman; Joseph G. Rosenbaum; Richard L. Reynolds; Andrei M. Sarna-Wojcicki Abstract High-resolution seismic-reflection profiles (3.5 kHz) show that a distinctive, widespread reflection occurs in the sediments beneath Upper Klamath Lake, Oregon. Coring reveals that this reflection...
FIGURES
Image
Map of <b>Upper</b> <b>Klamath</b> <b>Lake</b> area showing the <b>lake</b> and nearby tectonic feature...
Published: 01 February 2000
Figure 1. Map of Upper Klamath Lake area showing the lake and nearby tectonic features. Faults (ball on downtown side) and epicenters of 1993 earthquakes (open circles) are from Keefer and Shuster ( 1993 ) as modified from Wiley et al. ( 1993 ). Seismic-reflection tracklines in the lake
Image
Map of the central and southern basins of <b>Upper</b> <b>Klamath</b> <b>Lake</b>, showing seism...
Published: 01 February 2000
Figure 2. Map of the central and southern basins of Upper Klamath Lake, showing seismic reflection lines in which sublakefloor reflections were seen (light dashed lines), the location of profiles B–D in Figure 3 (solid lines), and faults observed in the seismic reflection data (hatchured lines
Image
Seismic-reflection profiles (3.5 kHz) from <b>Upper</b> <b>Klamath</b> <b>Lake</b>. Locations sh...
Published: 01 February 2000
Figure 3. Seismic-reflection profiles (3.5 kHz) from Upper Klamath Lake. Locations shown in Figure 1 and 2 . Dashed line near the top of each profile indicates lake floor. (a) Profile through core site, showing the position of the Mazama tephra ( mt ) in the core, exactly corresponding
Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(27)
EISBN: 9780813756158
.... The Klamath Basin is a colloquial term used to refer to the upper part of the Klamath River watershed, which runs from south of Crater Lake to the Pacific Ocean. The Klamath Basin is an area of irrigated farmland, timberlands, lakes, and wildlife refuges. The area became a symbol of western water problems...
Series: DNAG, Centennial Field Guides
Published: 01 January 1987
DOI: 10.1130/0-8137-5401-1.283
EISBN: 9780813754079
... past a small meadow, and then walk 0.25 mi (0.4 km) southsoutheast up the creek to Cabin Meadow Lakes. Eunice Bluff is the prominent light-colored outcrop above the south end of the upper lake. The beginning of the trip, survey point A, is on the large ledge that is about 400 ft (122 m) south...
Series: DNAG, Centennial Field Guides
Published: 01 January 1987
DOI: 10.1130/0-8137-5401-1.283
EISBN: 9780813754079
... past a small meadow, and then walk 0.25 mi (0.4 km) southsoutheast up the creek to Cabin Meadow Lakes. Eunice Bluff is the prominent light-colored outcrop above the south end of the upper lake. The beginning of the trip, survey point A, is on the large ledge that is about 400 ft (122 m) south...
Journal Article
Journal: GSA Bulletin
Published: 09 October 2018
GSA Bulletin (2018) 131 (3-4): 444-460.
..., with a highstand ∼30 m above present day Upper Klamath Lake ( Dicken, 1980 ). Lake Modoc shrank significantly as the climate warmed at the end of the Pleistocene, splitting into present day Upper and Lower Klamath lakes. The northern extent of ancient Lake Modoc bordered the study area ( Fig. 1...
FIGURES | View All (8)
Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE255-p307
... of the Eastern Klamath terrane, and upper Middle and Upper Triassic limestone, slate, siltstone, and pebble conglomerate. Similar Permian limestone with McCloud faunal affinities and slate-bearing slivers have been noted by previous workers in this area and to the south. The Butt Valley block had previously...
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2410(01)
... in the eastern Klamath Mountains ( Mankinen et al., 2002 ; Lindsley-Griffin et al., 2003 , this volume) to Upper Jurassic in the western Klamath Mountains ( Diller, 1903 ; Irwin, 1960 , 1994 ). The age of the lithotectonic units generally decreases to the west as well as structurally downward. Consequently...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2008
GSA Bulletin (2008) 120 (1-2): 179-194.
... and deformation of the outboard Upper Jurassic Galice and Mariposa formations. Klamath-Sierran terrane assemblies reflect ∼230 m.y. of transpression-transtension involving only minor episodes of subduction, producing ubiquitous ophiolite-chert-argillite lithologies and rare felsic arc rocks. In contrast, the Late...
FIGURES | View All (8)
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2410(14)
... ), indicates that the Buck Lake parental magma contained much less H 2 O than the Punchbowl–Doe Flat parent. Enrichments of K 2 O, Rb, and Ba in the Buck Lake rocks are distinctive, both in the Bear Mountain intrusive complex and in the Klamath Mountains province. Barnes et al. (this volume, Chapter 10...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2410(15)
...-bounding fault that separates the Rattlesnake Creek terrane from the western Klamath terrane, including the Upper Jurassic Galice Formation (Fig. 1) . In the same light, the Bear Mountain intrusive complex truncates the northwest–southeast-striking, South Siskiyou Fork fault ( Snoke, 1977 ; Fig. 2...
FIGURES | View All (10)
Journal Article
Journal: Geosphere
Published: 01 May 2019
Geosphere (2019) 15 (3): 882-900.
... uncertainty of the 17.6 ± 2.6 ka Waban moraine set and a ca. 18 ka massive influx of glacial flour to Upper Klamath Lake, which implies that local Cascade Range glaciers were receding at that time ( Rosenbaum and Reynolds, 2004 ). Because the Waban moraines and influx of glacial flour both yield ages of ca...
FIGURES | View All (10)
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2410(18)
... New field mapping and bulk-rock geochemical investigations in the southern Klamath Mountains and central Sierran Foothills combined with previous structural, petrochemical, and geochronologic studies allow the distinction between three Triassic–Jurassic basaltic arcs built along the continental...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2410(17)
... Lake unit of the Bear Mountain intrusive complex requires an H 2 O-poor mafic parent. The western Klamath suite plutons are also similar in their petrogenetic histories. In the oldest members of the suite (syn-Nevadan dikes, Summit Valley pluton, and most of the Bear Mountain intrusive complex...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2410(16)
... and flattened in the plane of foliation. They are petrographically similar to the mafic dikes. Figure 5. Photograph of mafic magmatic enclaves (dismembered dike) in biotite-hornblende quartz diorite, Upper Bear Lake area. Such synplutonic dikes are evidence of coexisting gabbroic and dioritic magmas...
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(A) Hillshade map of the West <b>Klamath</b> <b>Lake</b> fault zone and Howard Bay fault ...
in > Geosphere
Published: 01 May 2019
Figure 8. (A) Hillshade map of the West Klamath Lake fault zone and Howard Bay fault (HBF; red line) in the southern Klamath graben emphasizing the presence of N-striking fault scarps (yellow lines). Inset in the upper right shows that the NW-striking Howard Bay fault and N-striking normal faults
Journal Article
Published: 01 May 2010
Vadose Zone Journal (2010) 9 (2): 510-514.
...., 1978 ). The Klamath main stem is controlled by five small hydroelectric dams between Iron Gate Dam and Upper Klamath Lake, built starting in 1918. The portion of the river most in dispute and discussed by Doremus and Tarlock in Water War from the perspective of salmon reproduction is the river stretch...