Browsing Programs, Centers, and Institutes by Department "Geology and Geophysics"
Now showing items 1-20 of 27
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(2017-04-27)Understanding how the climate of the North American Great Plains may change in the future is of tremendous socioeconomic importance, yet the regional response to previous abrupt global climate events, such as the ...
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(2013-02-06)Mountain areas are prime locations for mass movement activity, as a result of their steep slopes and large amount of local relief. As a rapid mass movement phenomena, landslides are responsible for a considerable numbers ...
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(2013-09-25)The porosity in rock can be quantified and characterized using a variety of direct methods including imbibition methods, mercury injection, gas expansion, petrography, X-ray tomography, and image analysis. However many of ...
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Barium Concentrations as a Proxy for Equatorial Pacific Productivity during the Past 140,000 Years (2016-07-15)The accumulation of biogenic sediments in the deep ocean may yield important information about past ocean productivity and its relationship to climate change. Sediments, sampled at approximately millennial resolution, every ...
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International Ocean Discovery Program (IODP) Expedition 361 cored six sites along the greater Agulhas Current system. An objective of this expedition was to determine the dynamics of the Indian-Atlantic Ocean Gateway ...
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This study researched whether there were accurate alternative methods to evaluating porosity values and other rock property characteristics in Permian carbonate samples from well Lott 19-3, 4915’, Lott 19-7, 4940’- 5000’, ...
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(2011-05-10)Carbon isotope stratigraphy of carbonate sediments is instrumental in examining major perturbations in the global carbon cycle and in correlating strata. However, the primary isotopic signal recorded in these sediments can ...
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(2019-04-29)Abrupt deglacial environmental changes are recorded in the North Pacific including the expansion and strengthening of the oxygen minimum zone (OMZ). Previous workers in the North Pacific proposed a link between OMZ ...
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(2010-07-14)The relationship between intermediate watermass response to Atlantic Meridonial Overturning Circulation (AMOC) during two abrupt cooling events of the last deglacial, the Younger Dryas (YD) and Heinrich Event 1 (H1) is c ...
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The magnetic field variability of a young solar-type star delivers a time-varying magnetic flux to its hosted planets. In the case of early Earth prior to the establishment of the magne- tosphere, the associated electromotive ...
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(2014-09-17)Brenham, Texas has an interesting past that may surprise some of its residents. This past is discoverable through the use of geophysical methods. The site in question is owned by Blue Bell Creameries and is located on South ...
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(2019-04-22)Throughout the Earth’s lithosphere, from its formation at spreading centers to its termination at subduction and/or obduction environments, serpentinization and carbonation processes of mantle rock are recognized as important ...
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(2011-08-08)Tsunami deposits indicate that suspended load transport is the main mechanism of movement throughout a tsunami event. Recent studies have touched on whether bed load transport is also occurring, but not seen in deposits ...
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(2012-05-03)Cordaiteans are a group of plants present during the Carboniferous and Permian; the group is held together largely by the characteristic leaves. Cordaiteans are gymnosperms (seed-bearing plants). The group includes many ...
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(2011-05-10)The ocean’s deep-water circulation plays a large role in heat transport across the globe. Circulation in the modern begins where cold, dense surface waters of the North Atlantic and Southern oceans sink to form Atlantic ...
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Late Pleistocene Nannofossil Assemblages and Time-Averaging in the Fossil Record [IODP Site U1419] (2014-09-21)When looking at geologically rapid climatic changes, such as glacial/interglacial cycles, the true response of organisms may be obscured in the fossil record due to time averaging. Time averaging can also impact the rates ...
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There are currently two different theories for the formation of Upheaval Dome, an enigmatic circular geological formation comprising a tilted rim structure that encloses a central uplifted region. The first theory is that ...
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Stromatolites are the oldest macroscopic fossils that record the interaction between sediments and microbes. The question that remains is why do microbial mats tend to give a conical geometry to stromatolites. Prior ...
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(2014-09-24)Earth and Titan have vastly different physical environments, but similar landscapes. Sand dunes, like those found in Earth’s deserts, cover large areas of Titan’s equatorial region and are important records of climate. ...
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(2013-09-30)ABSTRACT Multisensor Geophysical Fusion for Improved Sub-surface Imaging at Camptown Cemetery, Brenham, Texas. (May 2014) Tate Gregory Meehan Department of Geology and Geophysics Texas A&M University Research Advisor: ...