Karl S Kellogg (Former Employee)
Science and Products
Geologic map of the Fort Collins 30'×60' quadrangle, Larimer and Jackson Counties, Colorado, and Albany and Laramie Counties, Wyoming
The rocks and landforms of the Fort Collins 30′ × 60′ 1:100,000-scale U.S. Geological Survey quadrangle reveals a particularly complete record of geologic history in the northern Front Range of Colorado. The Proterozoic basement rocks exposed in the core of the range preserve evidence of Paleoproterozoic marine sedimentation, volcanism, and...
Workman, Jeremiah B.; Cole, James C.; Shroba, Ralph R.; Kellogg, Karl S.; Premo, Wayne R.
Mountains, glaciers, and mines—The geological story of the Blue River valley, Colorado, and its surrounding mountains
This report describes, in a nontechnical style, the geologic history and mining activity in the Blue River region of Colorado, which includes all of Summit County. The geologic story begins with the formation of ancient basement rocks, as old as about 1700 million years, and continues with the deposition of sedimentary rocks on a vast erosional...
Kellogg, Karl S.; Bryant, Bruce; Shroba, Ralph R.
Geologic map of the eastern half of the Vail 30' x 60' quadrangle, Eagle, Summit, and Grand Counties, Colorado
Recent mapping and geochronologic studies for the eastern half of the Vail 1:100,000-scale quadrangle have significantly improved our understanding of (1) Paleoproterozoic history of the basement rocks of the Gore Range and Williams Fork Mountains (western margin of the Front Range), (2) the Late Paleozoic history of the Gore fault system, (3)...
Kellogg, Karl S.; Shroba, Ralph R.; Premo, Wayne R.; Bryant, Bruce
Structural development of high-temperature mylonites in the Archean Wyoming province, northwestern Madison Range, Montana
The Crooked Creek mylonite, in the northwestern Madison Range, southwestern Montana, is defined by several curved lenses of high non-coaxial strain exposed over a 7-km-wide, northeast-trending strip. The country rocks, part of the Archean Wyoming province, are dominantly trondhjemitic to granitic orthogneiss with subordinate amphibolite, quartzite...
Kellogg, Karl S.; Mogk, David W.
Geologic Map of the Santa Barbara Coastal Plain Area, Santa Barbara County, California
This report presents a newly revised and expanded digital geologic map of the Santa Barbara coastal plain area at a compilation scale of 1:24,000 (one inch on the map to 2,000 feet on the ground)1 and with a horizontal positional accuracy of at least 20 m. The map depicts the distribution of bedrock units and surficial deposits and associated...
Minor, Scott A.; Kellogg, Karl S.; Stanley, Richard G.; Gurrola, Larry D.; Keller, Edward A.; Brandt, Theodore R. A landslide in Tertiary marine shale with superheated fumaroles, Coast Ranges, California
In August 2004, a National Forest fire crew extinguished a 1.2 ha fire in a wilderness area ~40 km northeast of Santa Barbara, California. Examination revealed that the fire originated on a landslide dotted with superheated fumaroles. A 4 m borehole punched near the hottest (262 °C) fumarole had a maximum temperature of 307 °C. Temperatures in...
Mariner, Robert H.; Minor, Scott A.; King, A.; Boles, J.R.; Kellogg, Karl S.; Evans, William C.; Landis, Gary; Hunt, A.G.; Till, Christy B.
Geologic map of the Denver West 30' x 60' quadrangle, north-central Colorado
The Denver West quadrangle extends east-west across the entire axis of the Front Range, one of numerous uplifts in the Rocky Mountain region in which Precambrian rocks are exposed. The history of the basement rocks in the Denver West quadrangle is as old as 1,790 Ma. Along the east side of the range, a sequence of sedimentary rocks as old as...
Kellogg, Karl S.; Shroba, Ralph R.; Bryant, Bruce; Premo, Wayne R. Geologic Map of the Eastern Three-Quarters of the Cuyama 30' x 60' Quadrangle, California
The map area encompasses a large part of the western Transverse Ranges and southern Coast Ranges of southern California. The San Andreas fault (SAF) cuts the northern part of the map. The area south of the SAF, about 80 percent of the map area, encompasses several distinct tectonic blocks bounded by major thrust or reverse faults, including...
Kellogg, Karl S.; Minor, Scott A.; Cossette, Pamela M. New SHRIMP-RG U-Pb zircon ages and Sm-Nd analyses of Proterozoic metamorphic rocks of the San Gabriel basement terrane: Keys for Laurentian crustal reconstruction
No abstract available.
Premo, Wayne R.; Nourse, Jonathan A.; Castineiras, Pedro; Kellogg, Karl S. New 40Ar/39Ar age determinations and paleomagnetic results bearing on the tectonic and magmatic history of the northern Madison Range and Madison Valley region, southwestern Montana, U.S.A
Detailed 40Ar/39Ar dating and paleomagnetic analysis of dacite porphyry sills and dikes that intrude Cretaceous sedimentary rocks in the northern Madison Range in southwestern Montana show that Laramide shortening was essentially complete by ???69 Ma. A negative paleomagnetic fold test indicates that Laramide folding occurred before cooling of the...
Kellogg, K. S.; Harlan, S.S. Thrust-induced collapse of mountains-an example from the "Big Bend" region of the San Andreas Fault, western transverse ranges, California
Mount Pinos and Frazier Mountain are two prominent mountains just south of the San Andreas fault in the western Transverse Ranges of southern California, a region that has undergone rapid Quaternary contraction and uplift. Both mountains are underlain, at least in part, by thrusts that place granitic and gneissic rocks over sedimentary rocks as...
Kellogg, Karl S. Pliocene transpressional modification of depositional basins by convergent thrusting adjacent to the "Big Bend" of the San Andreas fault: An example from Lockwood Valley, southern California
The "Big Bend" of the San Andreas fault in the western Transverse Ranges of southern California is a left stepping flexure in the dextral fault system and has long been recognized as a zone of relatively high transpression compared to adjacent regions. The Lockwood Valley region, just south of the Big Bend, underwent a profound change in early...
Kellogg, K. S.; Minor, S. A.