Now showing items 1-10 of 125
Strontium isotopic geochemistry of intrusive rocks, Puerto Rico, Greater Antilles
(Elsevier, 1980-10)
The strontium isotopic geochemistry is given for three Puerto Rican intrusive rocks: the granodioritic Morovis and San Lorenzo plutons and the Rio Blanco stock of quartz dioritic composition. The average calculated initial ...
On the use of the volumetric thermal expansion coefficient in models of ocean floor topography
(Elsevier, 1980-04-20)
The use of the volumetric thermal expansion coefficient, instead of the linear coefficient, in successful models of ocean floor topography implies that the elastic rigidity of the lithosphere relaxes, enabling isostasy to ...
Sampling and faunal turnover in early Eocene mammals
(Elsevier, 1988-02-15)
Faunal turnovers in the fossil record are episodes of synchronous appearance and disapperance of species from a community, often resulting in net change in species richness. We studied the biostratigraphic record of faunal ...
The hydrothermal component in ferromanganese nodules from the southeast Pacific Ocean
(Elsevier, 1989-06)
Statistical analyses of geochemical data from ferromanganese nodule samples representing a broad area of the southeast Pacific Ocean indicate nodule compositions are controlled by four factors: (1) suboxic diagenesis; (2) ...
Modern and ancient geotherms beneath southern Africa
(Elsevier, 1988-04)
Estimates of subsurface temperatures in the Archean craton of southern Africa during the Archean derived from diamond thermobarometry studies are remarkably similar to temperatures estimated for the same depths today, even ...
Neogene history of the south Pacific tradewinds: Evidence for hemispherical asymmetry of atmospheric circulation
(Elsevier, 1986-05-30)
Eolian dust grains extracted from southeast Pacific pelagic sediments provide a Neogene record of southern hemisphere atmospheric processes. The mass accumulation rate of dust has been low and generally constant at 1-4 ...
A simulation model of river ice cover thermodynamics
(Elsevier, 1985-04)
A model of ice cover thermodynamics was used to simulate ice growth and decay along the international section of the St. Lawrence River for winter 1980-1981. This winter was chosen because of the exceptionally cold weather ...
A short note on early Cambrian palaeomagnetism from Normandy, France
(Blackwell Publishing Ltd, 1982-01)
Sedimentary biomarker and isotopic indicators of the paleoclimatic history of the Walker Lake basin, western Nevada
(Elsevier, 1988)
Walker Lake, a terminal saline lake in western Nevada, has experienced major fluctuations in its water level due to changes in the regional climate during Quaternary times. As part of a paleo-climatological study of western ...