Now showing items 31-40 of 692
A study of reactive transport phenomena in porous media
The numerical modeling of reactive transport in a porous medium has important applications in hydrology, the earth sciences and in numerous industrial processes. However, realistic simulations involving a large number of ...
Late Quaternary Mixed Carbonate-Siliciclastic Sediment Slope Accumulation: Unexpected Responses of Australia and Papua New Guinea Reefs to Glacio-Eustatic Sea Level Fluctuations
Overtime, the north Queensland (Australia) and Gulf of Papua (Papua New Guinea) margin has been constructed by the biogenic carbonate growth and development of large barrier reefs on the mid-to-outer shelves and offshore ...
Carbon cycle and climate fluctuations during the early Paleogene: Sedimentological characteristics and environmental ramifications
The early Paleogene was marked by extensive changes related to Earth surface temperature, carbon cycling, and the hydrological cycle. This included at least two, and probably more, geologically brief (~200-k.yr.) intervals ...
Geology of Culebra Island, Puerto Rico
Culebra Island, located about twenty miles east of Puerto Rico, is composed of undated andesite and spilitic volcanics which are intruded by diorite plutons. On the basis of the ages of similar rocks on Puerto Rico and the ...
Imaging the Great Plains of the Central U.S. using Finite-Frequency Rayleigh Wave Tomography and Implications for Asthenosphere-Driven Uplift
Here we present a 3D shear velocity model for the lower crust and upper mantle beneath the Great Plains in the central United States using finite frequency Rayleigh wave tomography. We use USArray Transportable Array ...
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 ...