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Добірка наукової літератури з теми "Willouran Ranges"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Willouran Ranges"

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Williams, Nicholas J., Mark P. Fischer, and David P. Canova. "Structural evolution and deformation near a tertiary salt weld, Willouran Ranges, south Australia." Marine and Petroleum Geology 102 (April 2019): 305–20. http://dx.doi.org/10.1016/j.marpetgeo.2018.12.035.

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Rowan, M. G., T. E. Hearon IV, R. A. Kernen, K. A. Giles, C. E. Gannaway-Dalton, N. J. Williams, J. C. Fiduk, T. F. Lawton, P. T. Hannah, and M. P. Fischer. "A review of allochthonous salt tectonics in the Flinders and Willouran ranges, South Australia." Australian Journal of Earth Sciences 67, no. 6 (February 10, 2019): 787–813. http://dx.doi.org/10.1080/08120099.2018.1553063.

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Gannaway Dalton, C. Evelyn, Katherine A. Giles, Mark G. Rowan, Richard P. Langford, Thomas E. Hearon, and J. Carl Fiduk. "Sedimentologic, stratigraphic, and structural evolution of minibasins and a megaflap formed during passive salt diapirism: The Neoproterozoic Witchelina diapir, Willouran Ranges, South Australia." Journal of Sedimentary Research 90, no. 2 (February 20, 2020): 165–99. http://dx.doi.org/10.2110/jsr.2020.9.

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ABSTRACT This study documents the growth of a megaflap along the flank of a passive salt diapir as a result of the long-lived interaction between sedimentation and halokinetic deformation. Megaflaps are nearly vertical to overturned, deep minibasin stratal panels that extend multiple kilometers up steep flanks of salt diapirs or equivalent welds. Recent interest has been sparked by well penetrations of unidentified megaflaps that typically result in economic failure, but their formation is also fundamental to understanding the early history of salt basins. This study represents one of the first systematic characterizations of an exposed megaflap with regards to sub-seismic sedimentologic, stratigraphic, and structural details. The Witchelina diapir is an exposed Neoproterozoic primary passive salt diapir in the eastern Willouran Ranges of South Australia. Flanking minibasin strata of the Top Mount Sandstone, Willawalpa Formation, and Witchelina Quartzite, exposed as an oblique cross section, record the early history of passive diapirism in the Willouran Trough, including a halokinetically drape-folded megaflap. Witchelina diapir offers a unique opportunity to investigate sedimentologic responses to the initiation and evolution of passive salt movement. Using field mapping, stratigraphic sections, petrographic analyses, correlation diagrams, and a quantitative restoration, we document depositional facies, thickness trends, and stratal geometries to interpret depositional environments, sequence stratigraphy, and halokinetic evolution of the Witchelina diapir and flanking minibasins. Top Mount, Willawalpa, and Witchelina strata were deposited in barrier-bar-complex to tidal-flat environments, but temporal and spatial variations in sedimentation and stratigraphic patterns were strongly influenced from the earliest stages by the passively rising Witchelina diapir on both regional (basinwide) and local minibasin scales. The salt-margin geometry was depositionally modified by an early erosional sequence boundary that exposed the Witchelina diapir and formed a salt shoulder, above which strata that eventually became the megaflap were subsequently deposited. This shift in the diapir margin and progressive migration of the depocenter began halokinetic rotation of flanking minibasin strata into a megaflap geometry, documenting a new concept in the understanding of deposition and deformation during passive diapirism in salt basins.
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Hearon, Thomas E., Mark G. Rowan, Timothy F. Lawton, Patrick T. Hannah, and Katherine A. Giles. "Geology and tectonics of Neoproterozoic salt diapirs and salt sheets in the eastern Willouran Ranges, South Australia." Basin Research 27, no. 2 (May 20, 2014): 183–207. http://dx.doi.org/10.1111/bre.12067.

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Hearon IV, Thomas E., Mark G. Rowan, Katherine A. Giles, Rachelle A. Kernen, Cora E. Gannaway, Timothy F. Lawton, and J. Carl Fiduk. "Allochthonous salt initiation and advance in the northern Flinders and eastern Willouran ranges, South Australia: Using outcrops to test subsurface-based models from the northern Gulf of Mexico." AAPG Bulletin 99, no. 02 (February 2015): 293–331. http://dx.doi.org/10.1306/08111414002.

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Hearon IV, Thomas E., Mark G. Rowan, Katherine A. Giles, Rachelle A. Kernen, Cora E. Gannaway, Timothy F. Lawton, and J. Carl Fiduk. "Allochthonous salt initiation and advance in the northern Flinders and eastern Willouran ranges, South Australia: Using outcrops to test subsurface-based models from the northern Gulf of Mexico." AAPG Bulletin 99, no. 02 (February 2015): 293–331. http://dx.doi.org/10.1306/08111414022.

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"Multiple deformation of the Rischbieth megabreccial thrust complex, Willouran Ranges, South Australia." Journal of Structural Geology 7, no. 3-4 (January 1985): 496. http://dx.doi.org/10.1016/0191-8141(85)90085-9.

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Дисертації з теми "Willouran Ranges"

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Hearon, IV Thomas E. "Analysis of salt-sediment interaction associated with steep diapirs and allochthonous salt| Flinders and willouran ranges, south australia, and the deepwater northern gulf of Mexico." Thesis, Colorado School of Mines, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3602617.

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The eastern Willouran Ranges and northern Flinders Ranges, South Australia contain Neoproterozoic and Cambrian outcrop exposures of diapiric breccia contained in salt diapirs, salt sheets and associated growth strata that provide a natural laboratory for testing and refining models of salt-sediment interaction, specifically allochthonous salt initiation and emplacement and halokinetic deformation. Allochthonous salt, which is defined as a sheet-like diapir of mobile evaporite emplaced at younger stratigraphic levels above the autochthonous source, is emplaced due to the interplay between the rate of salt supply to the front of the sheet and the sediment-accumulation rate, and may be flanked by low- to high-angle stratal truncations to halokinetic folds. Halokinetic sequences (HS) are localized (<1000 m) unconformity-bound successions of growth strata adjacent to salt diapirs that form as drape folds due to the interplay between salt rise rate (R) and sediment accumulation rate (A). HS stack to form tabular and tapered composite halokinetic sequences (CHS), which have narrow and broad zones of thinning, respectively. The concepts of CHS formation are derived from outcrops in shallow water to subaerial depositional environments in La Popa Basin, Mexico and the Flinders Ranges, South Australia. Current models for allochthonous salt emplacement, including surficial glacial flow, advance above subsalt shear zones and emplacement along tip thrusts, do not address how salt transitions from steep feeders to low-angle sheets and the model for the formation of halokinetic sequences has yet to be fully applied or tested in a deepwater setting. Thus, this study integrates field data from South Australia with subsurface data from the northern Gulf of Mexico to test the following: (1) current models of allochthonous salt advance and subsalt deformation using structural analysis of stratal truncations adjacent to outcropping salt bodies, with a focus on the transition from steep diapirs to shallow salt sheets in South Australia; and (2) the outcrop-based halokinetic sequence model using seismic and well data from the Auger diapir, located in the deepwater northern Gulf of Mexico. Structural analysis of strata flanking steep diapirs and allochthonous salt in South Australia reveals the transition from steep diapirs to shallowly-dipping salt sheets to be abrupt and involves piston-like breakthrough of roof strata, freeing up salt to flow laterally. Two models explain this transition: 1) salt-top breakout, where salt rise occurs inboard of the salt flank, thereby preserving part of the roof beneath the sheet; and 2) salt-edge breakout, where rise occurs at the edge of the diapir with no roof preservation. Shear zones, fractured or mixed `rubble zones' and thrust imbricates are absent in strata beneath allochthonous salt and adjacent to steep diapirs. Rather, halokinetic drape folds, truncated roof strata and low- and high-angle bedding intersections are among the variety of stratal truncations adjacent to salt bodies in South Australia. Interpretation and analysis of subsurface data around the Auger diapir reveals similar CHS geometries, stacking patterns and ratios of salt rise and sediment accumulation rates, all of which generally corroborate the halokinetic sequence model. The results of this study have important implications for salt-sediment interaction, but are also critical to understanding and predicting combined structural-stratigraphic trap geometry, reservoir prediction and hydrocarbon containment in diapir-flank settings.

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Тези доповідей конференцій з теми "Willouran Ranges"

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Williams, Nicholas J., David Canova, and Mark P. Fischer. "FRACTURE-CONTROLLED PALEOHYDROLOGY OF AN ALLOCHTHONOUS SALT WELD, WILLOURAN RANGES, SOUTH AUSTRALIA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-281273.

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Kernen, Rachelle, Elizabeth Anthony, Jason Ricketts, Julian Biddle, and Jose A. Garcia. "THERMAL ALTERATION HISTORY OF NEOPROTEROZOIC BASALT XENOLITHS IN THE PATAWARTA AND WITCHELINA DIAPIRS, FLINDERS AND WILLOURAN RANGES, SOUTH AUSTRALIA." In 51st Annual GSA South-Central Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017sc-289119.

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Gannaway, C. Evelyn, Katherine A. Giles, Mark G. Rowan, Thomas E. Hearon, and J. Carl Fiduk. "EVOLUTION OF A HALOKINETIC MEGAFLAP: UTILIZING SANDSTONE PROVENANCE TO RECOGNIZE SYNDEPOSITIONAL AND SYNDEFORMATIONAL EXPOSURE OF WITCHELINA SALT DIAPIR, WILLOURAN RANGES, SOUTH AUSTRALIA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-280804.

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