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Chemostratigraphy And Paleoenvironment Of The Smithwick Formation, Fort Worth Basin, San Saba County, Texas
(Geology, 2011-07-14)
The Early Pennsylvanian-Age Smithwick Formation was deposited in the tectonically active Fort Worth Basin in North Central Texas during a time of well-documented global climatic instability during the Late Paleozoic ice ...
Trace Element Geochemistry In Groundwater Flow Systems
(Environmental & Earth Science, 2011-03-03)
This research focuses on trace element geochemistry in three groundwater flow systems: the Carrizo Sand, the Upper Floridan, and the Aquia aquifers. The focus is threefold: (i) studying the geochemical behavior, concentrations, ...
Leading The James: The Morphological Changes Of The Missouri River And The Subservient James River
(Geology, 2011-07-14)
The James River flows into the Missouri River east of Yankton, SD. The degree to which the morphological changes of the Missouri River had an impact on the course of the James River is debatable. After mapping the Mission ...
Verrucomicrobia: A Model Phylum To Study The Effects Of Deforestation On Microbial Diversity In Amazon Forest
(Environmental & Earth Science, 2011-03-03)
The Amazon rainforest is known for having a very high diversity of plants and animals. However, it is one of the least understood ecosystems regarding microbial diversity. Microorganisms are important for the ecological ...
Chemostratigraphy And Paleoceanography Of The Mississippian Barnett Formation, Southern Fort Worth Basin, Texas, USA
(Geology, 2011-10-11)
The Mississippian (Visean-Serpukhovian) Barnett Formation is a lithologic unit composed primarily of laminated siliceous mudstone and calcareous siliceous mudstone with significant phosphate and sulfide phases present. The ...
Correlation Of Sequence Stratigraphic Surfaces Of The Mid-cretaceous Dakota Group From Subsurface To Outcrop Southern Denver Basin, Colorado.
(Geology, 2011-10-11)
The D and J sandstone of the Cretaceous Dakota Group are considered as the major oil and gas producing units within in the Denver Basin. The distribution of these units in the Denver Basin is a sub-basin of the Early ...
Air Emissions From Natural Gas Exploration And Mining In The Barnett Shale Geologic Reservoir
(Environmental & Earth Science, 2011-10-11)
This study evaluates air emissions from natural gas mining and production in the Barnett Shale within the Dallas/Fort Worth Metroplex. Due to advances in horizontal drilling and hydraulic fracturing, natural gas production ...
Growth And Toxicity Of Prymnesium parvum In Long-term Cultures At Low Temperature And Salinity
(Environmental & Earth Science, 2011-07-14)
There is a paradox reported concerning observations of toxic blooms of Prymnesium parvum in winter in Texas (USA), and its growth performance in the laboratlry. Culture experiments indicate relatively high optimum temperature ...
Microfacies Analysis Of The Jacksboro Limestone Member (Graham Formation, Virgilian, Pennsylvanian) In Jack County, Texas
(Geology, 2011-07-14)
The Jacksboro Limestone is a member of the Graham Formation of the Virgilian (Upper Pennsylvanian) and is exposed only in and around the city of Jacksboro in central Jack County, Texas. The purposes of this investigation ...
Experimental Studies On Shrinkage Induced Pressure Measurements Of Four Expansive Soils
(Civil & Environmental Engineering, 2011-03-03)
Civil structures were damaged by expansive soils due to its large volumetric changes caused by moisture fluctuations. During wet and dry season, the ground heaves up and also shrinks noticeably. The significant amount of ...