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Showing 1 to 20 of 36 for “"Apatite fission-track"”.
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On apatite fission-track analysis and heat transfer processes in the upper crust
Fission-track ages and confined track-length measurements from detrital apatites recovered from Ocean Drilling Program (ODP) Leg 116 Site 717 and 718 cores of distal Bengal Fan sediments provide information on both the thermal history of sediments recovered at these two sites and the cooling rates …
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Neoproterozoic to Holocene tectonothermal evolution of the southern Cantabrian Mountains NW Iberia, revealed by apatite fission-track thermochronology
… for more often observed substitutions to the apatite chemical formula [Ca_10(PO_4)_6(F,Cl,OH)_2], to predict correlation between AFT grain-ages and their respective D_par values. Graphs constructed for AFT central-age versus latitude and elevation yield negative slopes, indicating a complex …
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Quantifying South African uplift : using apatite fission track thermochronology and offshore sediment volumes to test the balance between denudation (onshore) and deposition (offshore) since Gondwana break-up
Includes bibliographical references (leaves 201-217).
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A combination of apatite fission track and (U-Th)/He thermochronometers to constrain the escarpment evolution in south eastern Australia: a case study of high elevation passive margins
In this project apatite fission track and (U-T)/He thermochronometers are used to determine the cooling history of rocks from the coastal (south eastern New South Wales) and the interior (Bathurst area) regions of the eastern Australia high elevation passive margin. Two traverses across the coastal …
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Regional Deformation and Dynamic Processes of the Southern Puna Plateau, Central Andes
… zircon U-Pb geochronological and detrital apatite fission-track thermochronological data suggest that the oldest sedimentary units on the SE (southeastern) and SW (southwestern) Puna Plateau belong to upper Eocene to lower Oligocene, defining a regional sedimentary basin across the plateau …
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Post-Orogenic Thermal History and Exhumation of the Northern Appalachian Basin: Low-Temperature Thermochronologic Constraints
<p>Since the early development of the fission-track dating method by Price, Walker and Fleischer in the 1960’s and 1970’s, the method has evolved into a robust tool for constraining thermal histories and determining exhumation rates within the upper continental crust. Low-temperature …
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The use of detrital mineral thermochronology to explore relationships among climate, erosion, and tectonics in the Nepal Himalaya
… erosion rates at the Himalayan range front, and apatite fission-track data are used to pinpoint the timing of this acceleration to between 2.5 and 0.9 million years ago.
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Evolution of the Kingman Arch, southern Nevada
… within the Colorado River Extensional Corridor. Apatite fission track and 40Ar/39Ar thermochronological analyses were conducted for granite samples collected from a 4.5 kilometer thick Precambrian section in the central McCullough Range. 40Ar/ 39Ar data suggest slow cooling of the Kingman Arch …
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Rapid Middle to Late Miocene Slip Along the Zanskar Normal Fault, Greater Himalayan Range, NW, India: Constraints from Low-Temperature Thermochronometry
… of the Himalayan orogen. Detailed new zircon and apatite (U-Th)/He (ZHe and AHe) and apatite fission-track (AFT) thermochronometric data from high-grade (amphibolite-migmatite) Greater Himalayan Sequence (GHS) metamorphic rocks, exposed in the footwall immediately adjacent to the ZF, provide …
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Tectonic and climatic controls on orogenic processes : the Northwest Himalaya, India
… Himalayan front new 40Ar/39Ar white mica and apatite fission track (AFT) thermochronologic data provide the opportunity to determine the history of rock-uplift and exhumation paths along an approximately 120-km-wide NE-SW transect spanning the greater Sutlej region of the northwest Himalaya, …
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The post-breakup evolution of the western Indian high-elevation passive margin
… of the Western Indian margin, new onshore apatite fission track and (U-Th)/He thermochronometry for the onshore portion of the Western Indian margin, and flexural isostatic modelling. The combined methodologies used within this study are used to resolve some of the fundamental questions …
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The Post Triassic uplift and erosion history of the Southwestern UK
… rifting. Using a combination of palaeothermal (apatite fission-track analysis and vitrinite reflectance data) seismic and compaction data, this study has revealed an exhumation history of far greater complexity than previously suspected across the Southwest UK, with regional kilometer-scale …
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Denudation rates and geomorphic evolution of the Cape Mountains, determined by the analysis of the in situ-produced cosmogenic 10BE
… Cape Fold Belt (CFB) and an inland Escarpment. Apatite fission track analysis has shown that this mountain system is an erosion feature, exhumed from beneath 2-7 km of overburden by large-scale denudation processes affecting the subcontinent during Gondwana break-up (ca. 140 – 65 Ma). Despite …
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Tectonic-erosion interactions : insights from the paleo-drainage of the Brahmaputra River
… sections is performed using magnetostratigraphy, apatite fission-track and luminescence dating. Provenance analysis using zircon and apatite U-Pb dating allows the reconstruction of the Miocene-Quaternary paleo-drainage of the Brahmaputra River and the documentation of the tectonic evolution of …
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Dynamic Topography of the Borborema Province, South America
… is consistent with inverse modeling of legacy apatite fission track samples. Rapid cooling events are recorded by samples located at the base of escarpments of the Borborema Plateau. Denudation of ∼ 1 km is estimated to have occurred during Miocene times. In conclusion, regional elevation of …
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Thermal and Diagenetic Evolution of Carboniferous Sandstones, Central Appalachian Basin
… present depth were constrained using published apatite fission track and radiogenic helium ages. Quartz, lithic and feldspar-rich sandstones from different stratigraphic intervals and locations were sampled from core (95 %) and outcrop (5%) to qualitatively and quantitatively evaluate sandstone …
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Petrogenesis and thermal history of the Kunlun Batholith, Northern Tibet
… and Qiangtang Terranes during the Cretaceous. Apatite fission track ages from plutons north of the Golmud Fault also document this uplift event. A 100 Ma period of quiescence ensued, during which the Kunlun Terrane cooled extremely slowly until a state of thermal equilibration was reached. The …
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The Impact of Long-Term Glacial Erosion on the Active Chugach-St. Elias Mountains, southern Alaska
… the strike of the range and analyzed by the apatite radiogenic helium (AHE) technique. Samples previously dated using the apatite fission track (AFT) method and located adjacent to our field area were also included in the analyses. The low-temperature sensitivity of these thermochronometers …
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Controlling factors of two Middle Triassic carbonate platforms: Latemar and Rosengarten (Dolomites, Northern Italy)
… and Latemar platforms. Vitrinite reflectance and apatite fission track data both argue for a shallow maximum burial. Present day topography was overlain by a maximum thickness of 1100m of overburden. There are no indications for a Neogene flysch or molasse-type setting as inferred from other …
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