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Showing 1 to 20 of 134 for “"Foreland"”.
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Subsurface mapping and 3D flexural modeling of the Putumayo foreland basin, Colombia
The Putumayo foreland basin (PFB) is located in southernmost Colombia and forms a 250-Kmlong segment of the 7000-Km-long corridor of Late Cretaceous-Cenozoic foreland basins formed by the eastward thrusting of the Andean mountain chain over Precambrian rocks. The current daily production of the …
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Active tectonics and earthquake hazards in continental mountain ranges and foreland basins
… The earthquake source characteristics and foreland basin structure were varied within reasonable geological bounds, and the earthquake-induced ground shaking was calculated. The earthquake source parameters were determined to be the dominant control on the amount of near-source ground …
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Plant Successional Patterns at Sperry Glacier Foreland, Glacier National Park, MT, USA
… succession across the chronosequences of glacier forelands. Patterns of plant colonization and succession on terrain exposed by retreating glaciers give insight into factors influencing alpine ecosystem change and recovery. Understanding these patterns and processes is important for conserving …
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Fractal analysis of topography and structure across the Appalachian foreland of West Virginia
Fractal analysis was conducted on topographic relief and seismic reflection travel time data in the state of West Virginia to determine the potential influence of subsurface structure on surface topography. Seismic travel-times digitized from two east-west seismic profiles and topographic relief …
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Evaluating the role of sediment supply in the development of foreland basin fill: an example from a low-accommodation clastic wedge in the Cordilleran foreland basin, Mesa Verde Group, Utah-Colorado
Includes bibliographical references (leaves 125-131).
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Evolution of an early proterozoic alluvially-dominated foreland basis, Burnside Formation, Kilohigok Basin, N.W.T., Canada
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.
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The Lower Pennsylvanian New River Formation: a Nonmarine Record of Glacioeustasy in a Foreland Basin
… trunk-tributary drainage system in a foreland-basin setting. Sheet-like, sandstone-mudstone bodies (up to 100 km wide and 70 m thick) developed in an axial trunk drainage system, whereas channel-like, sandstone-mudstone bodies (up to several km wide and 30 m thick) developed in …
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The Saltville thrust: investigation of a regional thrust fault in a foreland fold and thrust belt
Thin-skinned models of deformation are currently accepted for the southern Appalachians. The mechanics of this type of deformation are not well understood. The Saltville thrust, a major overthrust in the southern Appalachians, was investigated with respect to deformation mechanics. Thrust …
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Thermo-tectonic record of hyperextension, structural inversion, and foreland basin evolution of the eastern and central Pyrenees
… crustal architecture on orogenesis and foreland basin development. This work constrains the Early Cretaceous hyperextension history along the Iberia-European margin and how rift inheritance affected the structural and foreland basin evolution of the Late Cretaceous-Oligocene Pyrenean …
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Tectonic and climatic forcing in orogenic processes : the foreland basin point of view, Alborz mountains, N Iran
Systeme von Vorlandbecken repräsentieren bedeutende geologische Archive und dienen dem Verständnis von Rückkopplungen zwischen oberflächennahen und tektonischen Prozessen. Außerdem dokumentieren sie die Entwicklung unmittelbar angrenzender Bergketten. Die sedimentären Abfolgen in Vorlandbecken …
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The tectonic development of the Namaqua mobile belt and its foreland in parts of the Northern Cape
… 2,5 - 2,9 Ga and 0,9- 1,25 Ga respectively. The foreland of the belt in the area under consideration is formed by the south-western marginal part of the Kaapvaal Craton and by the Kheis tectonic domain; the former comprises granitoids and metamorphites generally older than c.2,5 Ga (the …
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Mixed Carbonate-Siliciclastic Sequence Development and Chemostratigraphy On a Distal Foreland During Miocene Glaciation, Eastern Saudi Arabia
… basin on the slowly subsiding distal Arabian foreland, distal from the active Zagros fold-thrust belt. Low subsidence rates of 1 to 4 cm/k.y generated the long-term accommodation, which were considerable slower than those in the proximal foredeep in Iran. Deposition of the siliciclastics was …
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Paleofluid Flow, Fracturing and Reservoir Implications in Foreland basins: an example from the Cretaceous Qamchuqa Formation, Kurdistan Iraq
Gali Ali Bag Gorge is located in W-NW Zagros Fault Thrust Belt, Kurdistan Region, northern Iraq. The gorge exposes shallow marine Lower Cretaceous Qamchuqa carbonates along more than 5km. The investigated outcropped carbonate strata and equivalent subsurface sections consist of several dolostone …
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High-Precision ID-TIMS U-Pb Zircon Geochronology of Three Cenomanian Bentonites from the Western Canada Foreland Basin
The Western Canada foreland basin contains a rich record of Upper Cretaceous marine | and tectonic change, yet is sparse in biostratigraphically useful fauna that permit | continental and global correlation. However, numerous extensive bentonites have been 1 mapped in Cenomanian strata and traced …
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Provenance of Eastern Magallanes Foreland Basin Sediments: Mineralogical and Geochemical Analyses Reveal Paleogene Tectonic Unroofing of the Fuegian andes
<p>Though southern South America and the Antarctic Peninsula were previously connected through a Paleozoic-Mesozoic subduction system on the western margin of Gondwana, this connection was tectonically disrupted in the Cenozoic by forming the Drake Passage in the Scotia Sea. Heavy mineral …
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Cenozoic foreland-basin evolution in the northern Andes : insights from thermochronology and basin analysis in the Eastern Cordillera, Colombia
The modern foreland basin straddling the eastern margin of the Andean orogen is the prime example of a retro-arc foreland basin system adjacent to a subduction orogen. While widely studied in the central and southern Andes, the spatial and temporal evolution of the Cenozoic foreland basin system in …
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Initial deposition in the Sevier foreland basin of southern Nevada: Conglomerates of the Cretaceous Willow Tank Formation, Clark County, Nevada
… of the Willow Tank Formation is the initial foreland basin sediment that was derived from highlands created by the Sevier thrust belt and dispersed across an irregular surface of Jurassic Aztec Sandstone in southern Nevada. The conglomerate varies from 5.5 to 34.5 m in thickness and is …
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The kinematics and dynamics of active mountain ranges
… chapter investigates lateral variations in the foreland of the New Guinea Highlands, a young mountain range which sits on the northern edge of the Australian plate. I construct new earthquake source models across central and western New Guinea, and combine these data with thermal and elastic …
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