Now showing items 31-40 of 691
The Absolute Motion of Trenches and Age of the Subducting Slab
Previous work proposes that many trenches advance, but inferred motions vary considerably between different estimates of plate motion relative to hotspots. We remedy this by using recent estimates of absolute plate motions ...
Marine geology of the northwestern Weddell Sea and adjacent coastal fjords and bays: implications for glacial history
Sedimentologic, compositional, and cleat shape analyses reveal that piston cores obtained on the northwest Weddell See continental shelf penetrated residual glacial marine sediments adjacent to Seymour Island, compound ...
A Paleomagnetic Study of the Permian Basalts at Las Delicias, Coahuila, Mexico
The Permian lavas and pyroclastics near Las Delicias, Mexico were measured for their natural remanent magnetism in the attempt to obtain a thermoremanent magnetic pole determination for the Permian period from North America. ...
Radon-222 emanation from rocks, soils, and lunar dust
The investigation of the Radon-222 emanation rate and the escape-to-production rate ratio by means of alpha counting was undertaken for rocks, soils and a sample from lunar dust. The material was analysed for different ...
A geochemical investigation of the Valley Spring gneiss and Packsaddle schist, Llano Uplift, Texas
Samples of the Valley Spring gneiss and Packsaddle schist were taken along two profiles in northern and south-eastern Llano County, Texas. These samples were analyzed for the major oxides, thorium, and uranium. A comparison ...
Late Cenozoic glacial-marine, carbonate, and turbidite sedimentation in the northwestern Ross Sea, Antarctica
Piston cores from the western Ross Sea reveal a stratigraphy consisting of basal tills overlain by glacial-marine sediments, succeeded seaward by glacial-marine deposits with abundant microfossils and IRD. The glacigenic ...
Structural evolution of metamorphic tectonites beneath the Silver Peak-Lone Mountain detachment fault, west-central Nevada
The Silver Peak Range of west-central Nevada reveals metamorphic tectonites below a low-angle fault deformed in a northwesterly-trending doubly-plunging anticline. The rock units in the region are divided into a lower ...
Structural evolution of the Sergipe-Alagoas Basin, Brazil
The evolution of the Sergipe-Alagoas Basin started during the Early Cretaceous, as part of the rift system that initiated the separation between the South American and African plates. The direction of propagation of the ...
Evolution of North Malé Atoll Rim during the Last Full Glacial Cycle (Malé Island, Republic of Maldives)
My study focuses on the evolution of Malé Island to elucidate the late Pleistocene-Holocene evolution of the discontinuous North Malé Atoll rim. Sample analyses from two boreholes, published information from additional ...
Adsorption studies on clays
Abstract Not Available.