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Monitoring bedrock vadose zone water storage dynamics with time-lapse borehole nuclear magnetic resonance well logging
(2022-08-12)
Bedrock vadose zone water storage dynamics are a critical component of the hydrologic cycle in many catchments, but direct observations of these dynamics are rare. Nuclear magnetic resonance (NMR) methods are sensitive to ...
A modern distribution of foraminifera to reconstruct environmental change offshore Galveston Bay, Texas
(2022-08-11)
Sand is an important resource for coastal engineering. In Texas, many offshore sand deposits are found buried in Holocene fluvial sediments or estuarine environments like tidal channels or bayhead, flood, and ebb tide ...
Evaluating abnormalities in daily transpiration patterns across tree species in a semi-arid climate
(2022-05-09)
Climate change causes shifts in precipitation, temperature, shifting climate zones and more, thus affecting the ecology and hydrologic feedbacks of many environments, specifically those existing in already warm, arid ...
Fluid-mobile element cycling (halogens, boron, lithium) and sourcing through the Costa Rican convergent margin
(2022-05-04)
The source of fluids in convergent margins can be traced using fluid-mobile elements such as Cl, Br, I, B, and Li. However, previous studies have often overlooked the forearc. Describing fluid loss from subducting oceanic ...
Autoencoders for seismic model upscaling and facies identification
(2022-08-12)
The research presented here focuses on the resolution enhancement of inverted seismic volumes and geological facies identification. In the first section I utilize a regularized neural network in the form of an autoencoder ...
Dynamic development of the Athabasca Valles outflow system from volcanic facies and 15m scale roughness
(2022-08-05)
The characterization of surface roughness properties provide context to the nature of geologic terrains, commonly partnered with field-based mapping on Earth and satellite-based photogeologic mapping in planetary sciences. ...
Lithium isotopes as a proxy for continental chemical weathering during the lead-up to the Neoproterozoic Sturtian glaciation
(2022-07-29)
Age constraints suggest that the oldest Neoproterozoic “Snowball Earth” glaciation, known as the “Sturtian'' glaciation, began at ~717 Ma and may have been triggered by enhanced continental silicate weathering coinciding ...
The elastic and transport properties of Hikurangi margin rocks as a function of stress, saturation, and the presence of fractures
(2022-05-05)
Stress, saturation, and the presence of fractures impact the elastic properties and permeability of rocks and subsurface domains, in general. The Hikurangi margin of New Zealand displays different fault slip behavior, with ...
Understanding anthropogenic fault rupture in the Eagle Ford region, south-central Texas
(2022-05-03)
There is a well-known occurrence of felt seismicity and smaller seismic events in areas where hydraulic fracturing (HF) operations occur. The Eagle Ford shale play of south-central Texas experienced an increase in the rate ...
Basin-floor channel stacking and evolution of the Brushy Canyon Formation in the northeastern Delaware Basin
(2022-07-29)
Deep-water depositional systems commonly show two end-member styles of stratigraphic architecture: laterally confined channelized deposits on the slope and more depositional, unconfined distributary channel-lobe deposits ...