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Constraining The Provenance Of Middle Cenozoic Fluvial Sandstone In The Central Rocky Mountains Using Detrital Zircon U-pb Geochronology And Sandstone Petrography
(Geology, 2014-09-17)
Detrital zircon U-Pb geochronology and sandstone petrography are studied to constrain the provenance of middle Cenozoic fluvial sandstone in the Central Rocky Mountains. Petrographic point counting of 12 sandstone samples ...
Predicting Fracture Density In The Eagle Ford (Boquillas) Formation, Val Verde Basin, Texas
(Environmental & Earth Science, 2014-03-12)
Fracture density in hydrocarbon reservoirs is an important variable for efficient production of oil and gas in tight reservoirs. Fracture density is the fracture surface area per unit of volume, and the higher the reservoir ...
Reducing Pb Bioaccessibility In Soil Through The Addition Of Apatite II
(Environmental & Earth Science, 2014-03-12)
This study was an investigation of the bioaccessibility of Pb in the presence of phosphate acting as an immobilizing constituent in the form of fish bone material, specifically Apatite II. Phosphate-induced Pb immobilization ...
Depositional Environments, Diagenesis, And Reservoir Delineation Of The FCU 1947 Upper Clear Fork Cored Interval - An SEM Image Analysis Approach To Pore System Characterization
(Environmental & Earth Science, 2014-03-12)
Delineating reservoir facies in heterogeneous tidal flat carbonates is a challenge which requires analysis at greater resolutions than wireline logs can provide. Such depositional environments are documented in the upper ...
An updated GPS velocity field for Puerto Rico and the Virgin Islands: Constraints on tectonic setting and internal-deformation
(2014-09-17)
Puerto Rico and the northern Virgin Islands define the eastern end of the Greater Antilles, while the Puerto Rico trench and the Muertos Trough define the northern and the southern limits of the North American - Caribbean ...
The Subsidence Evolution Of The Fort Worth Basin In North Central Texas, U.S.A.
(Environmental & Earth Science, 2014-09-17)
Although the Fort Worth Basin in north-central Texas has become a major shale-gas production system in recent years, its subsidence history and dynamic relationship to the Ouachita fold-and-thrust belt have not been well ...
Chemostratigraphy And Geochemical Constraints On The Deposition Of The Bakken Formation, Williston Basin, Eastern Montana And Western North Dakota
(Geology, 2014-03-10)
The late Devonian-early Mississippian Bakken Formation was deposited in a structural-sedimentary intracratonic basin that extends across a large part of modern day North Dakota, eastern Montana, and the southern portion ...
Timing, Provenance, And Paleoclimate Implications Of The Cenozoic Eolian Deposition In The Central Rocky Mountains, USA
(Geology, 2014-03-12)
This study applies detrital zircon U-Pb geochronology and sandstone petrography to constrain the timing and provenance of Cenozoic eolian sandstone in the central Rocky Mountains. Four samples, collected at the transition ...
The Effect Of Freshwater Input On δ18o Distribution At The Younger Dryas
(Environmental & Earth Science, 2014-07-14)
The Younger Dryas cooling event (~12.9-11.5 δ18O ka BP) is a recognized example of an abrupt decline of the Atlantic meridional overturning circulation and thus may serve as an analog for expected rapid future climate ...
Predicting Esherichia coli Levels In The Trinity River For Issuing Contact Recreation Warnings In The Dallas-Fort Worth Metroplex
(Environmental & Earth Science, 2014-03-12)
E. coli is an indicator for the potential of waterborne illness. However, tests for E. coli take 18 to 24 hours to produce results. During this time, citizens may be exposed to high levels of bacteria. As contact ...