Publications
Filter Total Items: 1423
Organic Geochemistry of Sediments Recovered by DSDP/IPOD Leg 75 from under the Benguela Current Organic Geochemistry of Sediments Recovered by DSDP/IPOD Leg 75 from under the Benguela Current
No abstract available.
Authors
P.A. Meyers, S. Brassell, A.Y. Huc, E.J. Barron, R.E. Boyce, Walter E. Dean, W.W. Hayes, Barbara H. Keating, C.L. McNulty, R.E. Schallreuter, Jean-Claude Sibuet, J.C. Steinmetz, D.A.V. Stow, Herbert Stradner
The Late Wisconsin glacial record of the Laurentide ice sheet in the United States The Late Wisconsin glacial record of the Laurentide ice sheet in the United States
No abstract available.
Authors
D.M. Mickelson, Lee Clayton, David S. Fullerton, H.W. Borns
Opening of the Red Sea: Constraints from a palaeomagnetic study of the As Sarat volcanic field, south‐western Saudi Arabia Opening of the Red Sea: Constraints from a palaeomagnetic study of the As Sarat volcanic field, south‐western Saudi Arabia
Four stratigraphic sections through alkali basalt flows of Oligocene to Miocene age (29‐24 Ma) in the As Sarat volcanic field, south‐western Saudi Arabia, were sampled for palaeomagnetic study. After systematic alternating‐field demagnetization, 42 magnetically acceptable flows (139 samples) yield a mean direction of magnetization of =355.3°, =15.2° (α=4.3°), which defines a...
Authors
Karl S. Kellogg, R. L. Reynolds
Geologic evolution of Hess Rise, central North Pacific Ocean Geologic evolution of Hess Rise, central North Pacific Ocean
Cores from four Deep Sea Drilling Project (DSDP) sites (310, 464, 465, and 466) and seismic-reflection profiles provide data that are used to interpret the geological evolution and paleoenvironments of Hess Rise, a prominent oceanic plateau in the central North Pacific Ocean. Hess Rise apparently formed in the Southern Hemisphere along the western flank of the Pacific-Farallon Ridge 110...
Authors
T. L. Vallier, Walter E. Dean, David K. Rea, Jorn Thiede
The chemical composition of lakes in the north‐central United States The chemical composition of lakes in the north‐central United States
Lake waters of the north‐central U.S.A. are classified into five groups, based on increasing specific conductivity and changes in ionic composition from east to west, from Wisconsin through Minnesota to North and South Dakota. The most dilute group of waters has specific conductivities
Authors
Eville Gorham, Walter E. Dean, J.E. Sanger
U-Pb ages of uranium ores in the Churchrock uranium district, New Mexico U-Pb ages of uranium ores in the Churchrock uranium district, New Mexico
No abstract available.
Authors
K.R. Ludwig, Bruce Rubin, Neil Fishman, Richard L. Reynolds
Origin and geochemistry of redox cycles of Jurassic to Eocene age, Cape Verde Basin (DSDP Site 367), continental margin of North West Africa Origin and geochemistry of redox cycles of Jurassic to Eocene age, Cape Verde Basin (DSDP Site 367), continental margin of North West Africa
No abstract available.
Authors
Walter E. Dean, J.V. Gardener
Continuous subaqueous deposition of the Permian Castile evaporites, Delaware Basin, Texas and New Mexico Continuous subaqueous deposition of the Permian Castile evaporites, Delaware Basin, Texas and New Mexico
Structures that are common in the Castile Formation (Ochoan) of the Delaware Basin, Texas and New Mexico (Fig. 1) include fine planar laminations, breccias, microfolded laminae, and nodular anhydrite. These structures, particularly the laminae, have been used to demonstrate the subaqueous depositional history of the Castile (Anderson and Kirkland, 1966; Anderson et al., 1972; Dean et al...
Authors
Walter E. Dean, Roger Anderson
Oxygen-deficient depositional paleoenvironments in the mid- Cretaceous tropical and subtropical central Pacific Ocean Oxygen-deficient depositional paleoenvironments in the mid- Cretaceous tropical and subtropical central Pacific Ocean
No abstract available.
Authors
Jorn Thiede, Walter E. Dean, George E. Claypool
Uranium-lead isochron age and preliminary sulfur isotope systematics of the Felder uranium deposit, south Texas Uranium-lead isochron age and preliminary sulfur isotope systematics of the Felder uranium deposit, south Texas
Uranium-lead isotope systematics of roll-front ores in Miocene sandstone at the Felder and McLean uranium deposits (south Texas coastal plain) give a well-defined 207 Pb/ 204 Pb- 235 U/ 204 Pb isochron age of 5.07 + or - 0.15 m.y. The relatively slight degree of scatter of the points defining the isochron is probably due to initial Pb isotope inhomogeneity, and the resulting inferred...
Authors
K.R. Ludwig, Martin B. Goldhaber, Richard L. Reynolds, Kathleen R. Simmons
Biogenic and nonbiogenic ore-forming processes in the south Texas uranium district; evidence from the Panna Maria deposit Biogenic and nonbiogenic ore-forming processes in the south Texas uranium district; evidence from the Panna Maria deposit
Geochemical and petrographic studies of core samples from the Panna Maria uranium deposit, a roll-type orebody in the Eocene Jackson Group in Karnes County, Texas, yield important information on the origin of the deposit. Organic carbon content averages about 0.42 weight percent in reduced rock and correlates postively with sulfur content. Pyrite is the dominant iron disulfide (FeS 2 )...
Authors
Richard L. Reynolds, Martin B. Goldhaber, D. Carpenter