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Showing 1 to 20 of 58 for “"Thermochronology"”.
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Thermochronology of ‘The Gap’, Western Australia
… of apatite Lu−Hf, U−Pb and fission track thermochronology allows tracing of differential cooling and exhumation patterns within the Coompana and Madura Provinces, preserving footprints of localised deformation and metamorphism in the eastern part of the Coompana-Madura region, possibly …
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Deep-time thermochronology of the US Upper Midwest cratonic interior
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Using thermochronology to constrain exhumation in the Swiss-Italian Alps
Twelve bedrock samples were collected from Ticino, Switzerland and Northern Italy for thermochronological studies using the (U-Th)/He technique on zircon and apatite and fission track on subset of zircons. Nine samples were collected from the Lepontine Dome, north of the Insubric Line, six of which …
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The development and application of microanalytical (U-Th)/He thermochronology
The (U-Th)/He thermochronmeter is the foremost tool available to geoscientists for the purposes of constraining the thermal evolution of the crust below 250°C. However, the potential of the technique is far from fully explored. The existing de facto (U-Th)/He age standard, the fluorapatite of Cerro …
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Detrital muscovite thermochronology in two drainage basins in western Bhutan
New reconnaissance data for a poorly characterized area in the western Bhutan Himalaya show distinction between the 40Ar/39Ar cooling age distributions of detrital minerals in the two river catchments of the Punatsang chu and the Wang chu. Muscovites from five samples of Wang chu river sands yield …
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Complexities of (U-Th)/he zircon thermochronology through the lens of zonation and deep time
Made available in DSpace on 2021-09-17T02:34:21Z (GMT). No. of bitstreams: 3 THURSTON-DISSERTATION-2021.pdf: 7628080 bytes, checksum: c6371e102e8d2076914a6d80ba36302b (MD5) LICENSE.txt: 4212 bytes, checksum: f34acdd052283bdcad4f0c41ed62f8d4 (MD5) PROQUEST_LICENSE.txt: 4558 bytes, checksum: …
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Timing of erosional episodes in the Marble Canyon and Vermilion Cliffs region from apatite (U-Th)/He thermochronology
… a synthesis of new and published low-temperature thermochronology datasets. I test models for a 50-70 Ma Marble Canyon and interpretations that postulate SW to NE progressive denudational stripping of the Colorado Plateau via cliff retreat. The main goal is to evaluate the timing of carving of …
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Neoproterozoic to Holocene tectonothermal evolution of the southern Cantabrian Mountains NW Iberia, revealed by apatite fission-track thermochronology
The southern Cantabrian Mountains expose sedimentary rocks having experienced uplift coeval with alpidic, Variscan and in the south, possibly Cadomian orogenic cycles; these rocks are referred to by their Variscan tectonic expressions: the Cantabrian Zone and Narcea Antiform. This thesis yields new …
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The use of detrital mineral thermochronology to explore relationships among climate, erosion, and tectonics in the Nepal Himalaya
… In this thesis, geologic and observations, thermochronology, and thermo-kinematic numerical modeling are combined to quantify variations in long-term erosion in the Nepal Himalaya. Detrital mineral thermochronology is explored as a tool for quantifying tectonic and geomorphic process rates …
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The Role of Magmatism in the Catalina Metamorphic Core Complex, Arizona: Insights from Integrated Thermochronology, Gravity and Aeromagnetic Data
<p>The footwall of the Catalina MCC located within the Basin and Range Province has been intruded by several magmatic suites. Samples were collected from the Wilderness suite sills, the most voluminous suite. U/Pb data from zircon indicate that the Wilderness suite sills were emplaced during two …
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Cenozoic foreland-basin evolution in the northern Andes : insights from thermochronology and basin analysis in the Eastern Cordillera, Colombia
… and biostratigraphic data with low-temperature thermochronology from the eastern sector of the Colombian Andes, in order to provide the first comprehensive account of mountain building and related foreland basin sedimentation in this part of the orogen, and to assess as to what extent …
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Post-Orogenic Thermal History and Exhumation of the Northern Appalachian Basin: Low-Temperature Thermochronologic Constraints
… the upper continental crust. Low-temperature thermochronology, notably apatite fission-track thermochronology because it has a kinetic parameter (i.e. track lengths), is commonly used to constrain the tectonic history of orogenic belts and the thermal history within sedimentary basins for …
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Thermochronology and geobarometry of the Granite Mountains, southeast California: Exhumation of a plutonic complex during collapse of the Sevier orogen
Thermochronologic data and geobarometry from the Granite Mountains indicate exhumation of mid-crustal plutons during Late Cretaceous extensional tectonics. U/Pb zircon and 40Ar/39Ar ornblende ages indicate intrusion, crystallization, and geologically instantaneous cooling through 500°C at ∼75 …
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Insight from thermochronology, magnetotellurics, and structural analysis into the tectonic evolution of the Ozark Dome-Illinois Basin region, Midcontinent USA
The north-central Midcontinent of the United States lies within the cratonic platform of North America, a geological province characterized by a thin veneer of Phanerozoic sedimentary cover strata overlaying Precambrian basement. (The boundary between the cover and the basement is the Great …
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Geologic mapping and zircon (U-Th)/He thermochronology of the Avawatz Mountains, California; Implications for the eastern terminus of the Garlock fault
… structural analysis, and low-temperature thermochronology data to test these proposed structural and evolutionary models and to resolve the timing and kinematics of deformation. Field observations show numerous subvertical west-striking strike-slip faults in the western portion of the …
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Deep-time tectono-thermal history of the northern us cordillera: understanding zircon (U-Th)/he thermochronology and its application to Idaho-Montana basement rocks
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms
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Behavior of Hybrid Thick- and Thin-Skinned Orogenic Wedges in the Western Interior USA and South-Central Andes
… structural analysis, low-temperature thermochronology, thermal history modeling, and regional space-time tectono-magmatic syntheses. Appendix A provides the first low-temperature thermochronologic data from the Little Belt Mountains of west-central Montana, showing that exhumation of …
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Regional Deformation and Dynamic Processes of the Southern Puna Plateau, Central Andes
… and (3) explore uses of low-temperature thermochronology in studying landscape evolution. This thesis provides important constraints on regional deformation and landscape evolution for the southern Puna Plateau since the late Paleozoic, and focuses on reconstructing its Cenozoic history …
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Argon and Neon Diffusion in Lunar Impact Glass & The Development of the Electron Microprobe Zircon Fission-Track Dating Technique
… three independent chapters on low temperature thermochronology. In chapter one a new methodology is presented for dating zircon using the fission-track technique. Chapters two and three describe experiments and modeling to determine the diffusion kinetics of Ar and Ne in lunar impact glass.</p>
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EPISODIC UPLIFT OF THE ROCKY MOUNTAINS: EVIDENCE FROM U-PB DETRITAL ZIRCON GEOCHRONOLOGY AND LOW-TEMPERATURE THERMOCHRONOLOGY WITH A CHAPTER ON USING MOBILE TECHNOLOGY FOR GEOSCIENCE EDUCATION
… track (AFT) and U-Th/He (AHe) low temperature thermochronology to look at differential cooling histories across the Rockies (Chapter 3). Chapter 4 investigates a project in which I designed and deployed a mobile device application for enhancing the traditional geoscience field education and …
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