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Characterization of VTI media with PS[subscript v] AVO attributes
(2014-12)
Amplitude variation with offset (AVO) signatures in vertically transverse isotropic (VTI) media vary as the degree of the anisotropy contrast between layers varies. When the contrasts in two parameters (δ and ε) that ...
REE-Be-U-F mineralization of the Round Top laccolith, Sierra Blanca Peaks, Trans-Pecos Texas
(2014-05)
The Round Top laccolith is considered to be one of the youngest laccoliths in a series of five known as the Sierra Blanca peaks, located in Hudspeth county, Texas. The laccolith is anomalous within the region in that it ...
Phylogenetic and ecological significance of the variation in the scleral ring of aquatic forging birds
(2014-12)
Diving birds must accommodate their vision to air and water, two very different optical media. A few species, such as penguins (Sphenisciformes), dive to depths approaching the aphotic zone of the ocean and must accommodate ...
Core-scale heterogeneity and dual-permeability pore structure in the Barnett Shale
(2014-12)
I present a stratigraphically layered dual-permeability model composed of thin, alternating, high (~9.2 x 10⁻²⁰ m²) and low (~3.0 x 10⁻²² m²) permeability layers to explain pressure dissipation observed during pulse-decay ...
Analysis of GPU-based convolution for acoustic wave propagation modeling with finite differences: Fortran to CUDA-C step-by-step
(2014-05)
By projecting observed microseismic data backward in time to when fracturing occurred, it is possible to locate the fracture events in space, assuming a correct velocity model. In order to achieve this task in near real-time, ...
The seismic response to fracture clustering : a finite element wave propagation study
(2014-05)
Characterizing natural and man-made fracture networks is fundamental to predicting the storage capacity and pathways for flow of both carbonate and shale reservoirs. The goal of this study is to determine the seismic ...
Single-crystal elasticity of the lower-mantle ferropericlase (Mg0.92Fe0.08)O
(2014-05)
This study focuses on investigating the effect of the electronic spin transition of iron on the elasticity of the candidate lower mantle ferropericlase (Mg,Fe)O. This may be relevant to our understanding of the seismic ...
U-Pb geochronology of the Late Cretaceous Eagle Ford Shale, Texas; defining chronostratigraphic boundaries and volcanic ash source
(2014-08)
The Eagle Ford Shale and equivalent Boquillas Formation (Late Cretaceous) contain abundant volcanic ash beds of varying thickness. These ash beds represent a unique facies that displays a range of sedimentary structures, ...
Depth-registration of 9-component 3-dimensional seismic data in Stephens County, Oklahoma
(2014-05)
Multicomponent seismic imaging techniques improve geological interpretation by providing crucial information about subsurface characteristics. These techniques deliver different images of the same subsurface using multiple ...
Temporal and spatial evolution of the Cave Graben Fault System, Guadalupe Mountains, New Mexico
(2014-12)
Numerous recent studies have demonstrated the importance of syndepositional faulting as an inherent element of steep-rimmed carbonate margins. However, these studies have not emphasized the relationship to older shelf ...