Paleobiotic and isotopic analysis of mollusks, fish and plants from core OL-92: Indicators for an open or closed lake system
James R. Firby, Saxon E. Sharpe, Joseph F. Whelan, Gerald R. Smith, W. Geoffrey Spaulding
George I. Smith, James L. Bischoff, editor(s)
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
Intervals of open versus closed lake systems for Pleistocene Owens Lake in California are suggested by a comparison of paleobiotic and isotopic evidence recovered from core samples of OL-92. Mollusks and fish were identified from 67 core samples, and their ecological requirements were noted. Carbon dioxide extractions for stable isotopes...
Ostracodes in Owens Lake core OL-92: Alteration of saline and freshwater forms through time
Claire Carter
George I. Smith, James L. Bischoff, editor(s)
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
Ostracode species’ geographic distributions are limited by parameters such as water temperature, salinity, and dissolved-ion composition. Because these parameters are, in part, determined by climate, ostracode biogeographic distributions serve as proxies for past climates. Therefore, the ostracodes in Core OL-92 from Owens Lake, southeast California, reveal climatic oscillations during the...
A diatom-based paleohydrologic record of climate change for the past 800 k.y. from Owens Lake, California
J. Platt Bradbury
George I. Smith, James L. Bischoff, editor(s)
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
A 323-m (~800 k.y.) core of lake deposits beneath Owens Lake playa, Inyo County, California, contains a nearly continuous paleolimnological record based on diatom assemblages. The core chronology is anchored by the Matuyama/Brunhes magnetostratigraphic boundary and the Bishop ash near the base of the record and by radiocarbon dates near...
Structural underpinnings and neotectonics of the southern Illinois Basin: An overview
Dennis R. Kolata, T.G. Hildenbrand
1997, Seismological Research Letters (68) 499-510
The southern end of the Illinois Basin is one of the most structurally complex regions in the Midcontinent United States. Two major structural elements characterize this part of the basin: (1) A broad southwestward-plunging cratonic depression extends across central Illinois and southwestern Indiana. Investigations of historical and prehistorical earthquakes in...
Broad-scale climatic influences on rainfall thresholds for debris flows: Adapting thresholds for northern California to southern California
Raymond C. Wilson
Robert A. Larson, James E. Slosson, editor(s)
1997, Book chapter, Storm-induced geologic hazards
A Landslide Warning System (LWS) operated in the San Francisco Bay region until late 1995. The LWS issued public advisories when rainfall conditions reached or approached critical levels for triggering debris flows ("mudslides"). Interest in an LWS for southern California was revived by the destructive landslides triggered by the storms...
A time-depth scale for Owens Lake sediments of core OL-92; radiocarbon dates and constant mass-accumulation rate
James L. Bischoff, Thomas W. Stafford Jr., Meyer Rubin
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
Results of radiocarbon analyses of carbonates and humates from the upper 31 m of OL-92 indicate coherent and linear progression of dates with depth down to about 24 m and 30 ka. Scatter of results below this depth indicates that the practical limit of radiocarbon dating in this core is...
Coal resources of Upper Cretaceous Fruitland Formation in the Southern Ute Indian Reservation, southwestern Colorado
Dorothy T. Sandberg
Orin J. Anderson, Barry S. Kues, Spencer G. Lucas, editor(s)
1997, Conference Paper, Mesozoic geology and paleontology of the Four Corners Region: New Mexico Geological Society, Forty-eighth Annual Field Conference, October 1-4, 1997
Comparative results of 27A1 NMR spectrometric and ferron colorimetric analyses of hydroxaluminum hydrolysis products in aged mildly acidic aqueous systems
D.V. Vivit, Karen M. Thorne, J.D. Hem
1997, Book chapter, Nuclear magnetic resonance spectroscopy in environmental chemistry
No abstract available....
Geochemical processes controlling uranium mobility in mine drainages
Richard B. Wanty, W. R. Miller, P. H. Briggs, J. B. McHugh
1997, Book chapter, The environmental geochemistry of mineral deposits: Part A: Processes, techniques, and health issues Part B: Case studies and research topics
Comprehensive models of ore genesis incorporate metal sources, transport and concentration mechanisms, and preservation mechanisms. Analogous concepts apply to the problem of metal migration from mines, mine wastes, and mine tailings, including: the concentrations, mineralogical occurrence, and availability of metals in mineral deposits, host rocks, mine wastes, and tailings (the...
The Spruce Head composite pluton: An example of mafic to silicic Salinian magmatism in coastal Maine, northern Appalachians
Robert A. Ayuso, Joseph G. Arth
1997, Book chapter, The nature of magmatism in the Appalachian orogen
No abstract available....
Physiography, Geomorphic/geologic Mapping and Stratigraphy of Venus
K. L. Tanaka, D.A. Senske, M. Price, Randolph L. Kirk
Stephen W. Bougher, Donald M. Hunten, Roger J. Phillips, editor(s)
1997, Book chapter, Venus II : Geology, Geophysics, Atmosphere, and Solar Wind Environment
No abstract available....
Operation of a landslide warning system during the California storm sequence of January and February 1993
Raymond C. Wilson
Robert A. Larson, James E. Slosson, editor(s)
1997, Book chapter, Storm-induced geologic hazards
From 1986 to late December 1995, the U.S. Geological Survey and the National Weather Service operated a landslide warning system for debris flows triggered by intense rainstorms in the San Francisco Bay region. The Landslide Warning System tracked storm systems as they approached the region, determined actual rainfall with a...
Bedrock geologic map of New Hampshire
John B. Lyons, Wallace A. Bothner, Robert H. Moench, James B. Thompson Jr.
1997, Report
No abstract available....
Responses of sediment geochemistry to climate change in Owens Lake sediment: An 800-k.y. record of saline/fresh cycles in core OL-92
James L. Bischoff, Jeffrey P. Fitts, John A. Fitzpatrick
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
Geochemical parameters of sediments from drill hole OL-92 indicate that Owens Lake was saline, alkaline, and highly productive during interglacial periods, and was hydrologically open and relatively unproductive during glacial periods. Abundance of CaCO3, organic carbon, and cation-exchange capacity of the clay fraction show cyclic variation down the core. Six...
Assessment of acreage and vegetation change in Florida's Big Bend tidal wetlands using satellite imagery
Ellen A. Raabe, Richard P. Stumpf
1997, Book, Proceedings of the fourth international conference on remote sensing for marine and coastal environments: technology and applications
Fluctuations in sea level and impending development on the west coast of Florida have aroused concern for the relatively pristine tidal marshes of the Big Bend. Landsat Thematic Mapper (TM) images for 1986 and 1995 are processed and evaluated for signs of change. The images cover 250 km of Florida's...
Geochemistry of the processes that attenuate acid mine drainage in wetlands
Katherine Walton-Day
Geoffrey S. Plumlee, M.J. Logsdon, editor(s)
1997, Book chapter, The environmental geochemistry of mineral deposits, part a: Processes, technique, and health issues
Because conventional treatment of acid-mine drainage (AMD) involves installation and maintenance of water treatment plants, regulators and mine operators have sought lower cost and lower maintenance technologies. One ecological engineering technology that has received increasing research attention is the use of natural and constructed wetlands for remediation of some of...
Core OL-92 from Owens Lake: Project rationale, geologic setting, drilling procedures, and summary
George I. Smith, James L. Bischoff
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
Several lines of evidence indicated that Owens Lake, a now-dry lake in southeast California, would probably yield a continuous and climatically informative sedimentary record. Also, the details of modern climate and runoff in the area are exceptionally well known, providing a firm basis for interpreting various types of evidence from...
Stratigraphy, lithologies, and sedimentary structures of Owens Lake core OL-92
George I. Smith
George I. Smith, James L. Bischoff, editor(s)
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
Owens Lake, a now-dry lake in southeastern California immediately east of the southern Sierra Nevada, was the site of a coring project designed to obtain a long paleoclimatic record. During the ensuing study, lacustrine deposits were recovered by the 323 m long core designated “OL-92.” The presence of the Bishop...
EM Induction and DC Resistivity surveys near the Norman, Oklahoma Landfill - text and figures for the WRD Norman web site
Jeff E. Lucius, R. J. Bisdorf
1997, Open-File Report 97-679
No abstract available....
Geochemical modeling of water-rock interactions in mining environments
Charles N. Alpers, D. Kirk Nordstrom
Geoffrey S. Plumlee, M.J. Logsdon, L.F. Filipek, editor(s)
1997, Book chapter, The environmental geochemistry of mineral deposits: Part A: Processes, techniques, and health issues part B: Case studies and research topics
Geochemical modeling is a powerful tool for evaluating geochemical processes in mining environments. Properly constrained and judiciously applied, modeling can provide valuable insights into processes controlling the release, transport, and fate of contaminants in mine drainage. This chapter contains 1) an overview of geochemical modeling, 2) discussion of the types...
Mass balance approach to selenium cycling through the San Joaquin Valley, sources to river to bay
Theresa S. Presser, David Z. Piper
R. A. Engberg, editor(s)
1997, Book chapter, Environmental chemistry of selenium
Surface and ground waters of the Central Valley of California (e.g., rivers, dams, off-stream storage reservoirs, pumping facilities, irrigation and drinking water supply canals, agricultural drainage canals) are part of a hydrologic system that makes up a complex ecosystem extending from the riparian wetlands of the Sacramento and San Joaquin...
Seasonal variation in metal concentrations in a stream affected by acid mine drainage, St. Kevin Gulch, Colorado
B. A. Kimball
Geoffrey S. Plumlee, M.J. Logsdon, L.F. Filipek, editor(s)
1997, Book chapter, The environmental geochemistry of mineral deposits: Part A: Processes, techniques, and health issues part B: Case studies and research topics
Mining of mineral deposits in the Rocky Mountains has left a legacy of acidic inflows to otherwise pristine upland watersheds. Since 1986, the U.S. Geological Survey has studied physical, chemical, and biological processes that affect the transport and transformation of metals in St. Kevin Gulch, an acidic, metal-rich stream near...
Level II scour analysis for Bridge 19 (SHEFTH00440019) on Town Highway 44, crossing Trout Brook, Sheffield, Vermont
Emily C. Wild, Laura Medalie
1997, Open-File Report 97-817
This report provides the results of a detailed Level II analysis of scour potential at structure SHEFTH00440019 on Town Highway 44 crossing Trout Brook, Sheffield, Vermont (figures 1–8). A Level II study is a basic engineering analysis of the site, including a quantitative analysis of stream stability and scour (U.S....
Level II scour analysis for Bridge 8 (ATHETH00090008) on Town Highway 9, crossing Bull Creek, Athens, Vermont
Erick M. Boehmler, Ronda L. Burns
1997, Open-File Report 97-818
This report provides the results of a detailed Level II analysis of scour potential at structure ATHETH00090008 on Town Highway 9 crossing Bull Creek in Athens, Vermont (figures 1–8). A Level II study is a basic engineering analysis of the site, including a quantitative analysis of stream stability and scour...
Level II scour analysis for Bridge 30, (HUNTTH00220030), on Town Highway 22, crossing Brush Brook, Huntington, Vermont
Ronda L. Burns
1997, Open-File Report 97-816
This report provides the results of a detailed Level II analysis of scour potential at structure HUNTTH00220030 on Town Highway 22 crossing Brush Brook, Huntington, Vermont (figures 1–8). A Level II study is a basic engineering analysis of the site, including a quantitative analysis of stream stability and scour (U.S....
