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Showing 1 to 20 of 22 for “"rift basins"”.
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Gravity constraints on extension and magmatism in the northernmost Rio Grande rift, northern Colorado
The Rio Grande Rift (RGR) is a north-trending belt of extensional basins extending from southern New Mexico to central Colorado, where its physiographic expression ends. Opening of the RGR initiated in the late Oligocene forming a series of rift basins linked by accommodation zones where the amount …
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ΜΕΤΑΛΛΟΓΕΝΕΣΗ ΤΗΣ ΤΡΙΤΟΓΕΝΟΥΣ ΘΕΙΟΥΧΟΥ ΜΕΤΑΛΛΟΦΟΡΙΑΣ ΠΕΡΙΟΧΗΣ ΑΙΣΥΜΗΣ ΝΟΜΟΥ ΕΒΡΟΥ
… AFFINITY, FORMED IN INTRACONTINENTAL RIFT-BASINS. (SHORTENED)
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Recalibrating the breakup history of SW Gondwana: the first U-Pb chronostratigraphy for the Uitenhage Group, South Africa
Syn-rift deposits often provide the only means to determine the processes for initiation and evolution of rift basins and passive margins. The structurally preserved erosional remnants of several rift basins that formed during the Mesozoic breakup of Gondwana are located within the southern Cape …
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Expanding the Geographical Footprint of CO₂ Storage through Numerical Investigations of Industrial-Scale Carbon Sequestration
… saline aquifers such as those that exist in rift basins for carbon storage. These four studies provide a general framework for sequestering CO₂ within offshore basins, fold-and-thrust belts, and rift basins, demonstrating the feasibility of CCS within these geologies and paving the way for …
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Incipient continental rifting: insights from the Okavango Rift Zone, northwestern Botswana
… Model (SRTM DEM) data from the Okavango Rift Zone in northwest Botswana are used to map the distribution of rift and basement structures. The distribution of these structures provide useful insights into the early stages of continental rifting. The objectives of this study are (1) …
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GRAVITY SURVEY OF A BURIED TRIASSIC RIFT BASIN, BERTIE COUNTY, NORTH CAROLINA
The North American rift margin includes of a series of Triassic rift basins along the eastern seaboard of the United States and Canada. This continent-scale rift basin system is comprised of complex and variable geometries that can be generalized into regions with similar structural, deformational, …
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Characterization of a volcanically impacted, overfilled continental rift basin within the southeastern Jemez Mountains, New Mexico
Volcanically impacted continental rift basins that experience coeval subsidence and volcanism challenge the conventional sedimentation models for continental rift basins. A field study was undertaken at the eastern margin of Bearhead basin within the southeastern Jemez volcanic field of north …
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High-Resolution Inversion and Spectral Decomposition: Case Studies from the Bohaiwan Basin, China
The Jiyang and Liaohe sub-basins of the Bohaiwan basin in China are Cenozoic rift basins containing active production. In these areas, reservoir thickness below seismic resolution limits the utility of conventional seismic data for reservoir characterization. In the Jiyang area, lacustrine …
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Supercontinental Inheritance and its Influence on Supercontinental Breakup: The Central Atlantic Magmatic Province and the Breakup of Pangea
… Margin, CAMP flows are found primarily in rift basins that can be divided into northern or southern groups based on differences in tectonic evolution, rifting history, and supercontinental inheritance. Geochemical signatures of CAMP suggest an upper mantle source modified by subduction …
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Depositional systems, sequence architecture, and controlling factors of an Eocene stratigraphic sequence at Minfeng steep margin of Dongying depression, eastern China
… processes and factors at the steep margin of a rift basin. In the first part of this work, an Eocene stratigraphic sequence is divided into three systems tracts, corresponding to different stages of lake evolution, as early expansion (EEST), late expansion-early contraction (LEECST), and late …
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Heterogeneous Strain Distribution & the Effects of High Frequency Climate Change on the Evolution of Early-Stage Rift Systems: Case Studies from Lakes Tanganyika and Malawi (Nyasa), East Africa
… crust through the formation of continental rift basins is a fundamental aspect of plate-tectonics and the first step that ultimately leads to plate-spreading, new continent formation, and the creation of ocean basins. Within continental rifts, processes associated with extensional faulting …
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Denudation processes in a tectonically active rift on different time scales
Continental rifts are excellent regions where the interplay between extension, the build-up of topography, erosion and sedimentation can be evaluated in the context of landscape evolution. Rift basins also constitute important archives that potentially record the evolution and migration of species …
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The architecture, growth and tectono-stratigraphic significance of rift-oblique lineaments on the NE Atlantic Margin
… are characteristic features of segmented rift systems and have been recreated in analogue models. Two end member conceptual models of fault domain boundaries currently exist. 1) Accommodation zones, which are broad regions of overlapping normal faults and which trend oblique to the rift …
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Refraction of isotherms: applications to define rift basin geometry
… steady-state heat conduction, three models of rift basins with various fault attitudes (vertical, high-angle, and listric) and a thermal conductivity ratio of 1:2, basin material:country rock, are analyzed numerically using the computer program CCC which utilizes the Integrated Finite …
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Fluvial sedimentation in continental half-graben basins
… stratigraphic architecture of intracontinental rift basins is defined by a dynamic relationship between depositional belts associated with the basin floor and flanking tributary streams on the piedmont. Spatiotemporal distributions of these deposits are sensitive to basin geometry, subsidence …
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Identifying source rocks and reservoir elements of South China Sea grabens using 3D seismic data, West Natuna Basin, Indonesia
… exploring for hydrocarbons in Southeast Asian rift basins (Sladen, 1997b). In the West Natuna Basin, Indonesia, wells infrequently penetrate most of the synrift section, and as a result source and reservoir potential of the lower synrift is under-evaluated. This study was designed to evaluate …
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The Global Detrital Zircon Database: Quantifying the Timing and Rate of Crustal Growth
… Dry Fork Formation of the Danville-Dan River Rift basin of Virginia and North Carolina, and 3. sample size issues in detrital zircon studies. The global detrital zircon age frequency distribution exhibits six prominent, statistically significant peaks: 3.2-3.0, 2.7-2.5, 2.0-1.7, 1.2-1.0, …
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Thermo-tectonic record of hyperextension, structural inversion, and foreland basin evolution of the eastern and central Pyrenees
Direct constraints on processes associated with rifting and mantle exhumation are necessary to understand the thermal and structural evolution of continental rift systems, and the role of pre-existing crustal architecture on orogenesis and foreland basin development. This work constrains the Early …
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The Midcontinent exposed: Precambrian basement topography, and fault-and-fold zones, within the cratonic platform of the United States
… magmatism and was cracked by several episodes of rifting. Subsequently, when North America was part of a supercontinent, the region underwent extensive Late Precambrian erosion and exhumation. Marine transgressions during the Phanerozoic buried the region with sequences Phanerozoic sedimentary …
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Triassic to Neogene Evolution of the Andean Retroarc: Neuquén Basin, Argentina
… 1.) active extension and deposition in isolated rift basins in the Late Triassic-Early Jurassic; 2.) post-rift back-arc basin from Late Jurassic-Late Cretaceous; 3.) foreland basin from Late Cretaceous to Oligocene; and 4.) variable extension and contraction along-strike from Oligocene to …
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