Chapter 21: Neodymium, strontium, and trace-element evidence of crustal anatexis and magma mixing in the Idaho batholith
Robert J. Fleck
J. Lawford Anderson, editor(s)
1990, Book chapter, The nature and origin of Cordilleran magmatism
Variations in initial 143Nd/144 Nd in Late Cretaceous plutonic rocks along the South Fork of the Clearwater River (SFCR) supplement results of Sr and O studies, which demonstrate large-scale mixing in magmas forming the western margin of the Idaho batholith. These marginal or border phases of the batholith span the terrane boundary...
Chapter 15: Two different lithosphere types in the Sierra Nevada, California
Ronald W. Kistler
J. Lawford Anderson, editor(s)
1990, Book chapter, The nature and origin of Cordilleran magmatism
Chemical and isotopic characteristics of plutons in the western United States reflect compositions and protoliths of subjacent source materials. A discontinuously exposed shear zone that extends along the length of the Sierra Nevada in California marks a boundary between two areas manifested geologically by wall-rock and roof-pendant lithologies of different...
Mineral resources of wilderness study areas: the Cockscomb Region, Utah
1990, Bulletin 1748
No abstract available....
Chapter 7: Jurassic granitoids and related rocks of the southern Bristol Mountains, southern Providence Mountains, and Colton Hills, Mojave Desert, California
Lydia Fox, David M. Miller
J. Lawford Anderson, editor(s)
1990, Book chapter, The nature and origin of Cordilleran magmatism
Jurassic plutons in the east-central Mojave Desert region are markedly different from older and younger Mesozoic plutons in the region. They form a chemically and texturally heterogeneous group that ranges in composition from diorite to syenogranite; some phases are alkalic. Igneous rocks in the southern Bristol Mountains, southern Providence Mountains,...
Evaluation of condition indices for estimation of growth of largemouth bass and white crappie
Steve Gutreuter, W. Michael Childress
1990, North American Journal of Fisheries Management (10) 434-441
We evaluated the ability of three condition indices-condition factor (K), relative condition (Kn), and relative weight (Wr)-to estimate annual growth rates of largemouth bass Micropterus salmoides and white crappies Pomoxis annularis collected during standardized autumn electrofishing and trap-net surveys of Texas reservoirs. Multiple-regression models for estimation of length increments from...
Proceedings of conference XLIX: a meeting of the U.S. ad hoc working group on "Earthquake related casualties"; July 13, 1989, Baltimore, Maryland
Walter W. Hays, editor(s)
1990, Open-File Report 90-244
Mineral resources of wilderness study areas: Central Green River Region, Utah
Robert P. Dickerson
1990, Bulletin 1753
No abstract available....
Digital line graphs from 1:24,000-scale maps
U.S. Geological Survey National Mapping Division
1990, Data Users Guide 1
The Earth Science Information Centers (ESIC) distribute digital cartographic/geographic data files produced by the U.S. Geological Survey (USGS) as part of the National Mapping Program. Digital cartographic data flles are grouped into four basic types. The first of these, called a Digital Line . Graph (DLG), is line map information...
Transmissivity and well yields of the Upper Floridan aquifer in Florida
William J. Andrews
1990, Florida Geological Survey Map Series 132
No abstract available....
Geology and mineral resources map of the South Mountain quadrangle, Malheur County, Oregon
James G. Evans
1990, Geologic Map Series 67
Development of slope valleys in the glacimarine environment of a complex subduction zone, Northern Gulf of Alaska
Paul R. Carlson, Terry R. Bruns, Michael A. Fisher
1990, Book chapter, Glacimarine environments: Processes and sediments
Morphological, seismic-reflection, and sedimentological evidence indicates that glacial ice tongues cut large sea valleys into the Gulf of Alaska continental shelf during the Pleistocene. During the Holocene, glacially-derived sediments from the Copper River and other meltwater streams have been prograding seaward across the shelf, covering the glacial and glacimarine upper...
Chapter 22: Changing patterns of extensional tectonics; Overprinting of the basin of the middle and upper Miocene Esmeralda Formation in western Nevada by younger structural basins
John H. Stewart, David S. Diamond
Brian P. Wernicke, editor(s)
1990, Book chapter, Basin and Range extensional tectonics near the latitude of Las Vegas, Nevada
The middle and upper Miocene Esmeralda Formation of western Nevada was deposited in a continental basin that crops out over an area of about 2,000 km2. The formation consists of thin, westerly derived sedimentary rocks in the western three-quarters of the outcrop area and of thick (3+ km) easterly derived...
Lithology and evolution of the crust-mantle boundary region in the southwestern Basin and Range Province
1990, Journal of Geophysical Research B: Solid Earth (95) 649-665
Mantle and crustal xenoliths from volcanic rocks in the southwestern Basin and Range province and Colorado Plateau Transition Zone reveal histories of episodic magmatism and deformation that have profoundly influenced the crustal structure of this region. Seismic transects in this area show a strongly reflective Moho of generally low relief,...
Contributions to Precambrian geology of Lake Superior region
Paul K. Sims, Lorna M.H. Carter
1990, Bulletin 1904
No abstract available....
Brown trout population and habitat changes associated with increased minimum low flows in Douglas Creek, Wyoming
S.W. Wolff, Thomas A. Wesche, D.D. Harris, W.A. Hubert
1990, Report
No abstract available....
Techniques in fish immunology
Joanne S. Stolen, T.C. Fletcher, D. P. Anderson, B.S. Roberson, W. B. van Muiswinkel
1990, Book, Fish immunology technical communications, no. 1
No abstract available....
Chapter 10: Shallow crustal deformation in the Pahranagat area, southern Nevada
Angela S. Jayko
Brian P. Wernicke, editor(s)
1990, Book chapter, Basin and Range extensional tectonics near the latitude of Las Vegas, Nevada
The Pahranagat area lies in the Basin and Range Province of southern Nevada. Paleozoic rocks in the study area were folded and faulted during the Sevier orogeny and subsequently extended prior to deposition of Tertiary strata. Middle Oligocene strata overlie the Paleozoic rocks with pronounced angular unconformity and were deposited...
Chapter 6: Petrogenesis of the composite peraluminous-metaluminous Old Woman-Piute Range batholith, southeastern California; isotopic constraints
Calvin F. Miller, Joseph L. Wooden, Victoria C. Bennett, James E. Wright, G. Cleve Solomon, Richard W. Hurst
1990, Book chapter, The nature and origin of Cordilleran magmatism
The Late Cretaceous Old Woman–Piute Range batholith includes both metaluminous and strongly peraluminous granitoid series that intruded the reactivated craton of southeastern California shortly after the orogenic peak. Whole-rock Sr, Nd, and O, feldspar Pb, and zircon U-Pb isotopic compositions, in combination with major- and trace-element and petrographic data, indicate...
Consolidation, triaxial shear-strength, and index-property characteristics of organic-rich sediment from the Peru continental margin: Results from Leg 112
Homa J. Lee, Robert E. Kayen, William McArthur
1990, Proceedings of the Ocean Drilling Program: Scientific Results 112-43
Sites 679, 680, and 681 of the Ocean Drilling Program were drilled along an east-west transect across an organic-rich, diatomaceous, coastal upwelling facies that occurs as a shelf/slope lens along the Peru continental margin. Seven 60-cm-long, unsplit core sections from these sites were tested for consolidation, triaxial shear strength, and...
Overthrust habitat management plan
B.W. Baker, Bob Luce
1990, Report
No abstract available....
Gloria data, Gulf of Mexico
Water Resources Division, U.S. Geological Survey
1990, Report
No abstract available....
The effect of developmental activities on water quality functions of bottomland hardwood ecosystems: the report of the water quality workgroup
M. L. Scott, B.A. Kleiss, W.H. Patrick, C.A. Segelquist
1990, Book chapter, Ecological processes and cumulative impacts: Illustrated by bottomland hardwood wetland ecosystems
No abstract available....
GLORIA, East Coast
Water Resources Division, U.S. Geological Survey
1990, Report
No abstract available....
Relationships between whitebark pine cone production and fall grizzly bear movements
B.M. Blanchard
1990, Book, Proceedings of a symposium on whitebark pine ecosystems: Ecology and management of a high-mountain resource
No abstract available....
Microphytic crusts: 'topsoil' of the desert
Jayne Belnap
1990, Permaculture Drylands Journal (10) 4-5
Deserts throughout the world are the home of microphytic, or cryptogamic, crusts. These crusts are dominated by cyanobacteria, previously called blue-green algae, and also include lichens, mosses, green algae, microfungi and bacteria. They are critical components of desert ecosystems, significantly modifying the surfaces on which they occur. In the cold...
