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Articles 1 - 30 of 56
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Structural Framework And Tectonic Implications From Field Investigations In The Ramelau Mountains, Timor-Leste, Tanner A. Nielsen
Structural Framework And Tectonic Implications From Field Investigations In The Ramelau Mountains, Timor-Leste, Tanner A. Nielsen
Theses and Dissertations
Recent advances in petroleum exploration off the southern coast of Timor-Leste and emerging mineral discoveries onshore have underscored the need for a more comprehensive structural understanding of the nation's geology. Although new structural models have been proposed for other parts of Timor, limited progress has been made toward developing detailed models for the Ramelau Mountains, which presents the highest structural relief of the Timor Ranges. Previous mapping in this area has been largely reconnaissance in nature and focused primarily on surface bedrock geology. This study presents a new 1:62,500-scale geologic map and a geometric structural analysis of the Ramelau region …
Applications Of Phosphorus Geochemistry To Utah Lake, Jacob Barry Taggart
Applications Of Phosphorus Geochemistry To Utah Lake, Jacob Barry Taggart
Theses and Dissertations
This compilation of studies provides an examination of phosphorus dynamics in the suspended solids, water column, and lakebed sediments of Utah Lake, a large, shallow, and phosphorus-rich water body. The first study introduces a novel phosphorus microfractionation (P-MF) method designed for small samples of suspended solids and sediments. This method reveals that suspended solids in Utah Lake can have a significantly higher phosphorus content across most fractions compared to lakebed sediments, highlighting the importance of considering suspended solids in nutrient management strategies. The second study analyzes historical phosphorus mass and concentrations, demonstrating that water column phosphorus levels have remained stable …
Full Issue
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
No abstract provided.
Dean Of Engineering Joins Farms Board
Dean Of Engineering Joins Farms Board
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
Douglas M. Chabries, professor of Electrical and Computer Engineering and Dean of the College of Engineering and Technology at BYU, has accepted an invitation to become a member of the board of directors of FARMS. He brings to the board some new research perspectives and a wealth of university administrative experience.
Preliminary Study Identifies Possible Sources For Nephi's Ore
Preliminary Study Identifies Possible Sources For Nephi's Ore
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
The efforts begun by Warren and Michaela Aston to identify important sites along the Lehi trail eventually evolved into a FARMS project and exploration to Southern Oman's Dhofar region in 1992. The remote area of Wadi Sayq in that region has been identified as a location that appears to meet all of the criteria one can infer from the text of the Book of Mormon for the coastal site named Bountiful by Lehi and his family, where they lived while building a ship for their ocean crossing.
Improving Xrd Analysis With Machine Learning, Rachel E. Drapeau
Improving Xrd Analysis With Machine Learning, Rachel E. Drapeau
Theses and Dissertations
X-ray diffraction analysis (XRD) is an inexpensive method to quantify the relative proportions of mineral phases in a rock or soil sample. However, the analytical software available for XRD requires extensive user input to choose phases to include in the analysis. Consequently, analysis accuracy depends greatly on the experience of the analyst, especially as the number of phases in a sample increases (Raven & Self, 2017; Omotoso, 2006). The purpose of this project is to test whether incorporating machine learning methods into XRD software can improve the accuracy of analyses by assisting in the phase-picking process. In order to provide …
Revisiting Great Basin Bristlecone Pine (Pinus Longaeva) In The Stansbury Mountains, Utah, David R. Burchfield, Otto W. De Groff, Matthew F. Bekker, Stanley G. Kitchen, Steven L. Petersen
Revisiting Great Basin Bristlecone Pine (Pinus Longaeva) In The Stansbury Mountains, Utah, David R. Burchfield, Otto W. De Groff, Matthew F. Bekker, Stanley G. Kitchen, Steven L. Petersen
Western North American Naturalist
Great Basin bristlecone pine (Pinus longaeva D.K. Bailey) presence in the Stansbury Mountains of north-central Utah has been reported prior to the year 2020, but these reports lack adequate population characterization and the delineation of distinct stands of trees. In summer 2020, we identified and documented the presence of 5 separate stands of bristlecone pine in the Stansbury Mountains. These stands are removed from the nearest bristlecone populations in other mountain ranges by a distance of approximately 120 km; as such, they represent a unique outlier population of the species. We used GPS data to create a geographic information …
The Slow Violence Of Eco-Apocalypse In The Poetry Of José Emilio Pacheco, Niels H. Christensen
The Slow Violence Of Eco-Apocalypse In The Poetry Of José Emilio Pacheco, Niels H. Christensen
Theses and Dissertations
Over the course of his fifty-year career, Mexican writer José Emilio Pacheco has almost habitually written poetry about environmental themes especially those related to pollution, extraction, deforestation, and other related themes of destruction. Simultaneously, his work has engaged with questions of temporality, namely the passing of time and the inherent violence of such questions. In this essay, I examine a selection of Pacheco's poetry from the 1970s to the early 2000s, demonstrating Pacheco's marrying of the two concepts: environmental degradation and time. This marriage results in a provocative synthesis of eco-apocalypse, a phenomenon that details a paradoxical end that never …
The Nabataean Façade Monuments Of Petra, Jordan: An Assessment Of The Façade Monuments And Their Geological Environment., Josie M. Newbold
The Nabataean Façade Monuments Of Petra, Jordan: An Assessment Of The Façade Monuments And Their Geological Environment., Josie M. Newbold
Theses and Dissertations
The Nabataean people controlled the Petra region of modern-day Jordan from sometime before 300 BCE until the Roman Annexation of the Nabataean kingdom in 106 CE. The Nabataeans are known for the monumental façades carved into the sandstone cliffs surrounding their capital city. The first survey of the façade monuments was undertaken by Brünnow and Domaszewski in 1904. They created a typology that has only been slightly modified by subsequent authors including Judith McKenzie (1990). This typology does not account for all of the variations in façade types in Petra, thus creating a need for a new typology proposed in …
Into Arabia: Lehi And Sariah’S Escape From Jerusalem, Warren P. Aston
Into Arabia: Lehi And Sariah’S Escape From Jerusalem, Warren P. Aston
BYU Studies
In his exhaustively reasoned paper “Dating the Departure of Lehi from Jerusalem,” Jeffrey Chadwick moved the discussion of the timing of the Lehite departure significantly further. Those like myself, who have long assumed that the Book of Mormon’s dating for the departure (about six hundred years before Christ’s birth) is simply a round, approximate number, now have additional reasons to see that the dating may, in fact, be literal and that a definitive year for the event might be within reach.
Hot Springs Inflow Controlled By The Damage Zone Of A Major Normal Fault, Steven Benjamin Godwin
Hot Springs Inflow Controlled By The Damage Zone Of A Major Normal Fault, Steven Benjamin Godwin
Theses and Dissertations
Spring water inflow is distinct at Pah Tempe Hot Springs (also known as Dixie Hot Springs) situated within the damage zone of the Hurricane Fault in Timpoweap Canyon in Hurricane, Utah. Excising of the footwall by the Virgin River has created Timpoweap Canyon and allowed an unusual opportunity to study the spring inflow in relation to the fault damage zone. While correlation of these springs with the damage zone and visible fracture patterns on the canyon wall has been made, no subsurface faulting has been imaged to verify connection to these visible fractures and spring inflows (Nelson et al., 2009). …
Geochemical Comparison Of Ancient And Modern Eolian Dune Foresets Using Principal Components Analysis, David A. Little
Geochemical Comparison Of Ancient And Modern Eolian Dune Foresets Using Principal Components Analysis, David A. Little
Theses and Dissertations
Geochemistry has been used to determine the provenance and diagenetic history of eolian sandstone deposits. However, the grain size, sorting, cementation, and detrital composition of eolian units can change along dune foreset laminae. The purpose of this study was to test for consistent trends of compositional change along dune foresets. Such trends could increase the quality of geochemical sampling of eolian sandstones and possibly aid in estimating the original height of ancient sand dunes. XRF data was gathered for both major and trace elements from the Pennsylvanian to Permian Weber Sandstone, Early Jurassic Navajo Sandstone, and modern Coral Pink Sand …
Natural And Anthropogenic Sources Of Arsenic And Nitrate In A Semi-Arid Alluvial Basin; Goshen Valley, Utah, Brian John Selck
Natural And Anthropogenic Sources Of Arsenic And Nitrate In A Semi-Arid Alluvial Basin; Goshen Valley, Utah, Brian John Selck
Theses and Dissertations
Arsenic (As) and nitrate (NO3) are common contaminants in groundwater that are introduced through a variety of natural and anthropogenic sources. In this study we investigated the sources and distribution of As and NO3 in Goshen Valley, Utah, USA. Goshen Valley is a semi-arid alluvial basin that is impacted by geothermal waters, agriculture, urban development, and legacy mining. In this study we sampled surface water, springs, and wells to analyze concentrations of major ions, trace elements (As, B, Ba, Ca, Fe, K, Li, Mg, Mn, Mo, Pb, Si, Sr, Zn), and stable isotopes in water (δ18 …
Hand-Portable Capillary Liquid Chromatography Instrumentation, Sonika Sharma
Hand-Portable Capillary Liquid Chromatography Instrumentation, Sonika Sharma
Theses and Dissertations
This dissertation focuses on the development of hand-portable capillary liquid chromatography (LC) instrumentation. In this work, battery-operable nano-flow pumping systems (isocratic and gradient) were developed and integrated with portable UV-absorption detectors for capillary LC. The systems were reduced in size to acceptable weights and power usage for field operation. A major advantage of the pumps is that they do not employ a splitter, since they were specifically designed for capillary column use, thereby greatly reducing solvent consumption and waste generation. UV-absorption detectors were specifically designed and optimized for on-column detection to minimize extra-column band broadening. Initially, an isocratic nano-flow pumping …
“The Great And Terrible Judgments Of The Lord”: Destruction And Disaster In 3 Nephi And The Geology Of Mesoamerica, Neal Rappleye
“The Great And Terrible Judgments Of The Lord”: Destruction And Disaster In 3 Nephi And The Geology Of Mesoamerica, Neal Rappleye
Interpreter: A Journal of Latter-day Saint Faith and Scholarship
Over recent decades, several Latter-day Saint scholars and scientists have offered analysis and comparison to geologic events and the destruction recorded in 3 Nephi 8-9. Jerry Grover makes an important contribution to this literature as he provides background on geologic processes and phenomena, details the geologic features of the Tehuantepec region (Mesoamerica), and applies this information to not only the description of 3 Nephi 8-9, but other incidents in the Book of Mormon likely connected to geologic events. In doing so, Grover yields new insights into the narratives he examines, and adds clarity to geographic details that have been subject …
Along Strike Variability Of Thrust-Fault Vergence, Scott Royal Greenhalgh
Along Strike Variability Of Thrust-Fault Vergence, Scott Royal Greenhalgh
Theses and Dissertations
The kinematic evolution and along-strike variation in contractional deformation in overthrust belts are poorly understood, especially in three dimensions. The Sevier-age Cordilleran overthrust belt of southwestern Wyoming, with its abundance of subsurface data, provides an ideal laboratory to study how this deformation varies along the strike of the belt. We have performed a detailed structural interpretation of dual vergent thrusts based on a 3D seismic survey along the Wyoming salient of the Cordilleran overthrust belt (Big Piney-LaBarge field). The complex evolution of the thrust faults that parallel the overthrust belt is demonstrated by the switching of the direction of thrust …
Multi-Scale Neotectonic Study Of The Clear Lake Fault Zone In The Sevier Desert Basin (Central Utah), Brandon D. Heiner
Multi-Scale Neotectonic Study Of The Clear Lake Fault Zone In The Sevier Desert Basin (Central Utah), Brandon D. Heiner
Theses and Dissertations
A multi-scale high-resolution geophysical and geological study was conducted in the Sevier Desert, central Utah, found within the Colorado Plateau-Basin and Range Transition Zone. The region is marked by with Quaternary volcanics and faulting as young as 660 yr B.P., with many fault scarps thought to have the potential for 7+ magnitude earthquakes. Three locations within the Sevier Desert which represent three different tectonic expressions of possible faulting at the surface were selected. These include a location found within surface sedimentation, a location with surface sedimentation and sub-surface basalts and a location with basalts, at the surface with very limited …
Integrated Three-Dimensional Geophysical Analysis Of The Wasatch Fault Zone Near Rock Canyon, Provo, Utah, Leo T. Brown, Dr. Alvin K. Benson
Integrated Three-Dimensional Geophysical Analysis Of The Wasatch Fault Zone Near Rock Canyon, Provo, Utah, Leo T. Brown, Dr. Alvin K. Benson
Journal of Undergraduate Research
The Wasatch fault zone extends from southern Idaho into central Utah, and approximately ninety percent of Utah’s population live in or near this fault zone. Surface rupture and ground shaking associated with earthquake events represent the biggest geologic hazards to people and structures within this fault zone. Movement and rupture will most likely occur along preexisting zones of weakness or faults. In order to mitigate damage to buildings and loss of lives, the locations of individual faults within the fault zone should be determined as accurately as possible.
Discriminant Analysis Of Xrf Data From Sandstones Of Like Facies And Appearance: A Method For Identifying A Regional Unconformity, Paleotopography,And Diagenetic Histories, Stephen Paul Phillips
Discriminant Analysis Of Xrf Data From Sandstones Of Like Facies And Appearance: A Method For Identifying A Regional Unconformity, Paleotopography,And Diagenetic Histories, Stephen Paul Phillips
Theses and Dissertations
The placement of an unconformable surface within a stratal succession affects the interpreted thickness of units and sequences in contact with that surface. Unit thickness influences the interpretation of basin subsidence, paleotopography, diagenesis, and depositional style. Accurate placement of an unconformity results in true formational thicknesses for formations associated with that unconformity. True thicknesses aid in producing more precise surface to subsurface correlations, isopach maps, and paleogeographic maps. An unconformity may be difficult to identify in the stratal succession due to similar rocks above and below the unconformity and the presence of multiple candidate surfaces. Using statistical discriminant analysis of …
An Integrated Geophysical And Geologic Study Of The Paleogene-Age Volcanic Body And Possible Landslide Deposit On The South Slope Of The Traverse Mountains, Utah, John C. Hoopes
Theses and Dissertations
Development of homes, roads, and commercial buildings in northern Utah has grown significantly during the last several decades. Construction has expanded from the valley floor to higher elevations of benches, foothills, and other elevated regions of the Wasatch Mountain Front. Construction in the higher elevation areas are a concern due to potential for landslides, both new and reactivated. Landslides have been identified in this region and are dated as Pleistocene to historical in age. A possible landslide of about 0.5 km2 on the south slope of Traverse Mountain has been mapped by the Utah Geological Survey in 2005. Its surface …
Volcanic Stratigraphy And A Kinematic Analysis Of Ne-Trending Faults Of Allens Ranch 7.5' Quadrangle, Utah County, Utah, Adam Paul Mckean
Volcanic Stratigraphy And A Kinematic Analysis Of Ne-Trending Faults Of Allens Ranch 7.5' Quadrangle, Utah County, Utah, Adam Paul Mckean
Theses and Dissertations
The mineral resources of the Tintic Mining District are influenced by three major events in its geologic history; the Mesozoic Sevier Orogeny, Paleogene volcanism and Late Neogene Basin and Range extension. In this paper a detailed analysis of each these geologic events is presented to help us understand the structural host, mineralization and exhumation of the Tintic Mining District ore. A kinematic analysis of the faults was completed to determine the origin of NE-trending faults, Sevier Orogeny or Basin and Range extension, in the northern part of the East Tintic Mountains in Allens Ranch 7.5' quadrangle, near the eastern margin …
Testing Models Related To The Laramide Uplift Of The Uinta Mountains And Geologic Mapping Of The Jessen Butte 7.5 Minute Quadrangle, Dagget County, Utah And Sweetwater County, Wyoming, Coreen Hurst
Theses and Dissertations
Geologic mapping of the Jessen Butte 7.5 minute quadrangle and the gathering of structural data throughout the quadrangle was used to determine the paleostress regime during the Laramide Orogeny along the north flank of the Uinta Mountains. The Henrys Fork thrust fault and the Uinta thrust fault are major north bounding faults and within the Jessen Butte quadrangle these faults transfer deformation from one to the other. The Jessen Butte thrust fault is a fault splay that splits off from the Henrys Fork thrust fault. Complex fold geometries were created by the interaction of the faults. Bedding plane orientation, mode …
Integrating Facies Analysis, Terrestrial Sequence Stratigraphy, And The First Detrital Zircon (U-Pb) Ages Of The Twist Gulch Formation, Utah, Usa: Constraining Paleogeography And Chronostratigraphy, Tyson L. Perkes
Theses and Dissertations
The Jurassic Twist Gulch Formation of central Utah was deposited in the active Arapien sub-basin of the Western Cordillera foreland trough. We herein demonstrate the utility of integrating facies analysis, terrestrial sequence stratigraphy, and detrital zircon (U-Pb) ages to improve paleogeographic reconstructions as well as identify regional unconformities, locate fluvial depocenters, and infer sediment supply/accommodation space ratios. Strata of the Twist Gulch Formation in Pigeon Creek Canyon (PCC) near Levan, Utah consists primarily of alluvial deposits, while in Salina Canyon (SC) the Twist Gulch Formation is comprised of a mix of alluvial and marginal marine deposits associated with the Jurassic …
Investigating The Margins Of Pleistocene Lake Deposits With High-Resolution Seismic Reflection In Pilot Valley, Utah, John V. South
Investigating The Margins Of Pleistocene Lake Deposits With High-Resolution Seismic Reflection In Pilot Valley, Utah, John V. South
Theses and Dissertations
A vast area of the northeastern Great Basin of the western USA was inundated by a succession of Plio-Pleistocene lakes, including Lake Bonneville (28 ka to 12 ka). The Pilot Valley playa, located just east of the Utah-Nevada border near Wendover, Utah, within the eastern Basin and Range Province, represents an 8 to 16 km wide and ~50 km long remnant of these lakes. The playa corresponds to the upper surface of a closed basin that is delimited by two mountain ranges, which are mantled by recent alluvial fans over which the playa sediments have prograded. In order to investigate …
Simulation Of The Flow In The Koiliaris River Basin (Greece) Using A Combination Of Gis, The Hspf Model And A Karstic– Snow Melt Model, Nektarios N. Kourgialas, George P. Karatzas, Nikolaos N. Nikolaidis
Simulation Of The Flow In The Koiliaris River Basin (Greece) Using A Combination Of Gis, The Hspf Model And A Karstic– Snow Melt Model, Nektarios N. Kourgialas, George P. Karatzas, Nikolaos N. Nikolaidis
International Congress on Environmental Modelling and Software
The purpose of this study was to model the Koiliaris River flow where flood phenomena appear from time to time. The Koiliaris River basin is located east of the City of Chania, Crete, (Greece). The basin is extended from the White Mountains (Lefka Ori) to the coastline. The geology of the basin is mainly constituted by carbonate (Karstic area), quaternary-neogenic deposits and flysch formation. The main volume of water is discharged from the karstic system of the White Mountains (Lefka Ori) through springs and temporary rivers. In order to calculate the flow from the springs the Maillet Karstic model is …
The Case For Humboldtensis: A Subspecies Name For The Indigenous Cutthroat Trout (Oncorhynchus Clarkii) Of The Humboldt River, Upper Quinn River, And Coyote Basin Drainages, Nevada And Oregon, Patrick C. Trotter, Robert J. Behnke
The Case For Humboldtensis: A Subspecies Name For The Indigenous Cutthroat Trout (Oncorhynchus Clarkii) Of The Humboldt River, Upper Quinn River, And Coyote Basin Drainages, Nevada And Oregon, Patrick C. Trotter, Robert J. Behnke
Western North American Naturalist
In the early years of his research on the native trouts of western North America, Behnke (1960, 1966, 1979) observed consistent differences in certain meristic characters between the cutthroat trout of the Humboldt River drainage and those from the Truckee, Carson, and Walker river drainages of the Lahontan Basin, and proposed that the Humboldt trout be recognized as a distinct subspecies. He coined the subspecies name humboldtensis, but a formal description was never published. Here we again present the early evidence for subspecific distinction of the Humboldt drainage cutthroat trout, and add more recent findings from the fields of …
Reservoir Characterization And Outcrop Analogs To The Navajo Sandstone In The Central Utah Thrust Belt Exploration Play, Ashley Dalrymple
Reservoir Characterization And Outcrop Analogs To The Navajo Sandstone In The Central Utah Thrust Belt Exploration Play, Ashley Dalrymple
Theses and Dissertations
Reservoir heterogeneity plays an important role in oil field economics and completion strategies. We herein characterize the reservoir heterogeneity of the Early Jurassic Navajo Sandstone in the Justensen Flat/Devils Canyon area of the San Rafael Swell, Utah. These outcrops are located approximately 60 kilometers (45 mi) east of the recently discovered Covenant oil field which is located in the central Utah thrust belt exploration play. The reservoir for the Covenant field is the Navajo Sandstone. This study can serve as an outcrop analogue for this developing play and other eolian reservoirs worldwide. There are eight facies within the Navajo Sandstone …
Hikorocodium Endo Is Not An Alga But An Inozoid Sponge, J. Keith Rigby, Baba Senowbari-Daryan
Hikorocodium Endo Is Not An Alga But An Inozoid Sponge, J. Keith Rigby, Baba Senowbari-Daryan
Faculty Publications
The genus Hikorocodium, with the type species Hikorocodium elegantae from the Permian of Japan, was described originally as a codiacean alga by Endo. It is not a codiacean alga but an inozoid sponge of the family Preperonidellidae. Several fossils described later by Endo and other authors as H. elegantae should be assigned to different inozoid sponge taxa. Specimens of H. fertiliz, described by Endo from the Jurassic of Japan, are also sponge fragments. The taxonomic positions of H. transversum Endo and H. kuramotoi Nakamura, as sponges or
A Stratigraphic And Geochronologic Analysis Of The Morrison Formation/Cedar Mountain Formation Boundary, Utah, Brent W. Greenhalgh
A Stratigraphic And Geochronologic Analysis Of The Morrison Formation/Cedar Mountain Formation Boundary, Utah, Brent W. Greenhalgh
Theses and Dissertations
The Lower Cretaceous Cedar Mountain Formation preserves several vertebrate faunas and has the potential of providing critical timing information pertaining to Early Cretaceous dinosaurs and the Sierran magmatic arc. Historically, the Morrison/Cedar Mountain contact and the duration of the unconformity between them have been difficult or impossible to determine because 1) the formations were deposited in similar environments, 2) the basal Cedar Mountain Formation is composed of reworked Morrison Formation, and 3) there are no radiometric ages for the lower Cedar Mountain Formation. A stratigraphic study through central Utah reveals a diagnostic suite of pedogenic and sedimentologic characters across the …
Geologic Map And Structural Analysis Of The Twin Rocks 7.5 Minute Quadrangle, Wayne County, Utah, Samuel C. Sorber
Geologic Map And Structural Analysis Of The Twin Rocks 7.5 Minute Quadrangle, Wayne County, Utah, Samuel C. Sorber
Theses and Dissertations
A new geologic map of the Twin Rocks 7.5 minute quadrangle primarily located within Capitol Reef National Park, south-central Utah, provides stratigraphic and structural detail not previously available. This map has also been instrumental in understanding the evolution and development of fluvial terraces associated with Sulfur Creek and the structural geology of the backlimb of the Miners Mountain uplift. Nine bedrock stratigraphic formations and eight types of Quaternary deposits were mapped throughout the quadrangle. Bedrock stratigraphy ranges in age from Permian to Jurassic. New details absent on previous geologic maps include members of the Chinle and Moenkopi Formations and the …