Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 51 for “"evaporite"”.
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Effects of Permian evaporite dissolution in Kansas
Digitized by Kansas Correctional Industries
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Effects of Permian evaporite dissolution in Kansas
Digitized by Kansas Correctional Industries
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Lithostratigraphic investigation of a Late Devonian carbonate-evaporite sequence; the Duperow Formation, Williston Basin, North Dakota
… North Dakota is a cyclical carbonate evaporite unit deposited on a shallow marine shelf during the early part of the Late Devonian (Frasnian). The formation forms the lower part of the Jefferson Group and lithostratigraphic review permits three informal members to be recognized: lower, …
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CHARACTERIZATION AND DELINEATION OF POTENTIAL EVAPORITE GEOHAZARDS USING ELECTRICAL RESISTIVITY METHODS ALONG FM 2185, CULBERSON COUNTY, TEXAS
… to infrastructure. Dissolution of regional evaporite strata have led to manifestations of karst geohazard phenomena including sinkholes, subsidence features, and caves. The study area is located within the Gypsum Plain in Culberson County, Texas, and includes outcrops of Castile and Rustler …
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Genetic sequence analysis of carbonate and evaporite strata, Upper Mission Canyon (Madison Group), Mississippian, Williston Basin, North Dakota
Includes bibliographical references.
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Seismic delineation of the southern margin of the middle Devonian prairie evaporite in the Elk Point Basin, south-central Saskatchewan
… the southern edge of the middle Devonian Prairie Evaporite (PE) in south-central Saskatchewan. The purpose of this work was to improve the accuracy and resolution of subsurface mapping by including additional information from well logs and seismic data not included in the previous …
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A geochemical study of neoproterozoic palaeo-evaporites and their possible role in metallogenesis in the Damara Belt of Namibia
Former evaporite horizons in metamorphic terrains have frequently been referred to as a source for highly saline fluids associated with base metal ore deposits in various parts of the world. Data on the nature of these former evaporites and their associated connate fluids, however, is frequently …
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Geochemical Characterization of the Louann Salt, Puma Field, Green Canyon, Gulf of Mexico Basin – Using XRF and XRD
<p>The Jurassic-aged Louann Salt is an evaporite sequence deposited in the Gulf of Mexico Basin (GOMB). It is an important component of the GOMB petroleum system and influences the facies pattern in overlying strata and the distribution of petroleum stratigraphic traps. The Louann Salt is composed …
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Controls on mineralisation in the Cadeby formation (lower magnesian linestone)
… is also related to former displacive evaporites, either by direct replacement or by precipitation in voids resultant from evaporite dissolution. Diagenesis is complex with different mechanisms of dolomitization, evaporite replacement and dedolomitization; mineralization is related to …
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Salt Drilling Problems in North Dakota
… of western North Dakota may be placed in three evaporite types: normal marine, penesaline, and saline. The four major formations encountered in oil well drilling are the Prairie Evaporite of Devonian age, Mississippian Charles, Permian Opeche, and the Spearfish of Triassic age. A variety of …
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Sedimentary Depositional Cyclicity, Mission Canyon and Charles Formations (Mississippian), Williston Basin, North Dakota
… sedimentary cyclicity within the carbonate and evaporite succession of the Mississippian Madison Group. Descriptions of cyclicity are diverse and commonly conflict. Previous work has been exclusively qualitative. This study used a group of statistical techniques in a method designed specifically …
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Depositional environments and diagenesis, Winnipegosis Formation (Middle Devonian), Williston Basin, North Dakota
… shallow shelf, reef, lagoon, tidal flat, and evaporite basin. The deposition of the Winnipegosis and Prairie Formations were inter-related and occurred during six episodes. Following a brief hiatus separating the underlying Ashern Formation from the Winnipegosis, a clear, quiet, shallow-marine …
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Physical and Chemical Controls on Suffosion Development in Gypsic Soil, Culberson County, Texas
… mitigate damage imposed on infrastructure in evaporite karst terrains. Regions with thick, heterogeneous soils of low to moderate gypsum content (10-70%) and moderate fracture densities (100-800 m/km<sup>2</sup>) are optimal for suffosion development. This model should be considered for future …
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Depositional History and Petroleum Potential of the Middle Devonian Fort Vermilion Formation, Alberta
… resulting in the deposition of carbonate and evaporite units. Seawater and associated ions were supplied to the system via evaporative drawdown through a seaward barrier or tidal channels. Relative sea level rise resulted in a better connection with the open ocean and the end of evaporite …
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Depositional Environments and Diagenesis of the Devonian Dawson Bay Formation in Saskatchewan and Northwestern Manitoba
… into the Second Red Bed, Burr, Neely and Hubbard Evaporite members from base to top. The purpose of this thesis is (1) to describe the sedimentary rocks of the formation from Saskatchewan and northwestern Manitoba, (2) to interpret the depositional environments and diagenesis, and (3) to discuss …
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Investigating laminated sediments of the Al-Azraq basin, Jordan and the implications for paleoenvironmental variability
… fine laminae of terrestrial material and Ca evaporite, possibly aragonite, and accompanying changes in moisture flux. The data demonstrate visible laminated rhythmites. XRF results identify alternating laminae of Ca and Si, SEM scans identify seasonal diatoms and EDS demonstrates an …
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The nature of pan sediments: A case study on dust supply from the Makgadikgadi pans, Botswana
… the particle size distribution controlled by evaporite minerals, inferred from sample digestion. XRD and ICP analysis on 8 and 22 samples respectively, identified evaporite minerals including halite, thenardite, mirabilite and trona, in addition to carbonate minerals, which represent the young …
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Hydrogen Storage Potential of the Salina Group, Appalachian and Michigan Basins
… and its associated costs of the Salina Group evaporites in two adjacent sedimentary basins, the Appalachian Basin and the Michigan Basin. The Michigan Basin Salina Group contains three evaporite units suitable for hydrogen storage, the A1, A2, and B evaporites. The Appalachian Basin includes a …
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IDENTIFYING SALT SUTURE ZONES AND LITHOLOGICAL CHANGES OF THE LOUANN SALT IN THE GULF OF MEXICO BASIN, LA. U.S.A.
<p>The Louann Salt, a key evaporite unit in the Gulf of Mexico Basin, influences salt tectonics, hydrocarbon migration, and basin evolution. This study examines Louann Salt deposition and deformation within the Puma Diapir, focusing on mineralogical, geochemical, and structural features of suture …
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Unique Preservation of Fossil Ghost Fish in the Green River Formation
… fish preservation occur within the predominantly evaporite-rich, fossil poor Angelo Member in the Green River Formation in Fossil Basin, Wyoming. These two beds, termed “Ghost Fish” beds, contain fossil fish that are two-dimensional carbonaceous compressions with no bone and detailed soft part …
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