Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2354
National Earthquake Hazards Reduction Program, summaries of technical reports; volume XXXIV
No abstract available.
Authors
Muriel L. Jacobson
Bristol Lake basin--a deep sedimentary basin along the Bristol-Danby trough, Mojave Desert
No abstract available.
Authors
R.C. Jachens, Keith A. Howard
Kinematic evidence for extensional unroofing of the Franciscan Complex along the Coast Range Fault, Northern Diablo Range, California
Franciscan metagraywacke immediately below the Del Puerto ophiolite, an outlier of the Coast Range ophiolite in the northern Diablo Range, was sheared during top‐to‐the‐east displacement on the Coast Range fault. This represents normal faulting and extensional offset. It was accompanied by attenuation of the Coast Range ophiolite and Great Valley sequence in the hanging wall along layer‐parallel n
Authors
T.A. Harms, A. S. Jayko, M. Clark Blake
530 Ma zircon age for ophiolite from the New England orogen: Oldest rocks known from eastern Australia
New ion microprobe data provide constraints on the timing of formation of ophiolitic rocks in the New England tectonic collage in eastern Australia. Results for analyses of magmatic zircons from plagiogranite of the Weraerai terrane ophiolite at Upper Bingara give a 206pb/238|j ag e Qf 53Q ± 6 Ma (2a). This plagiogranite is the oldest rock from eastern Australia yet identified. Existing tectonic m
Authors
J.C. Aitchinson, T. R. Ireland, M. Clark Blake, P.G. Flood
Hydrological, geomorphological, and chemical effects of Hurricane Andrew on coastal marshes of Louisiana
Hydrological conditions are reported for the hurricane-induced storm surge at marsh sites in Terrebonne and Barataria Basins. There was a 6 hour or greater delay in the arrival of the storm surge at interior marsh sites compared to coastal locations. A water surge of about 1.5 m with a salinity of 10–15‰ was recorded at an intermediate salinity marsh site in Terrebonne Basin where significant geom
Authors
Larry L. Jackson, A.L. Foote, Laurie S. Balistrieri
Thin, low‐velocity crust beneath the southern Yukon‐Tanana Terrane, east central Alaska: Results from Trans‐Alaska crustal transect refraction/wide‐angle reflection data
A seismic refraction/wide‐angle reflection survey for the Trans‐Alaska Crustal Transect program reveals a thin, reflective crust beneath the southern Yukon‐Tanana terrane (YTT) in east central Alaska. These data are the first detailed refraction survey of the southern YTT and compose a 130‐km‐long reversed profile along the Alaska and Richardson highways. Results from this study indicate that low‐
Authors
Bruce C. Beaudoin, Gary S. Fuis, Walter D. Mooney, Warren J. Nokleberg, Nikolas I. Christensen
Uranium-series age estimates of corals from Quaternary marine sediments of southern Florida
No abstract available.
Authors
D.R. Muhs, B. J. Szabo, L. McCartan, P.B. Maat, C. A. Bush, R. B. Halley
Aminostratigraphy and oxygen isotope stratigraphy of marine terrace deposits, Palos Verdes Hills and San Pedro areas, Los Angeles County, California
No abstract available.
Authors
D.R. Muhs, G. H. Miller, J. F. Whelan, G. L. Kennedy
The biogeochemical cycling of trace metals in the water column of Lake Sammamish, Washington: Response to seasonally anoxic conditions
Total acid‐soluble and dissolved Cd, Co, Cr, Cu, Ni, Pb, and Zn concentrations in the water column of a seasonally anoxic lake (Lake Sammamish, Washington) were measured on a monthly basis during the course of a year. These data, in conjunction with Fe, Mn, sulfide, and nutrient data, are used to assess the biochemical processes controlling the distribution of trace metals in the lake and how the
Authors
Laurie S. Balistrieri, J.W. Murray, B. Paul
Incorporation and redistribution of locally derived lithic fragments within a pyroclastic flow
The lower Miocene Peach Springs Tuff exposed in the Newberry Mountains, California, was deposited within a paleovalley trending S65°W. Exposures within the paleovalley contain lithic breccia intercalated with ash-rich ignimbrite. The clast assemblage of the lithic breccias matches the rock types of the paleovalley walls, and therefore the clasts were not derived from a distant eruptive vent. Flow
Authors
D.C. Buesch
The cycling of iron and manganese in the water column of Lake Sammamish, Washington
Processes controlling the distribution and mobility of Fe and Mn in Lake Sammamish, Washington, a seasonally anoxic lake, are deduced from a year‐long monthly study of physical, chemical, and biological parameters in the lake. Inventories of dissolved Mn and Fe in the bottom waters increase as the redox potential lowers with dissolved Mn inventories during stagnation being much larger than invento
Authors
Laurie S. Balistrieri, J.W. Murray, B. Paul