scholarly journals Early burial mud diapirism and its impact on stratigraphic architecture in the Carboniferous of the Shannon Basin, County Clare, Ireland

Sedimentology ◽  
2018 ◽  
Vol 66 (1) ◽  
pp. 329-361 ◽  
Author(s):  
Sébastien Blanchard ◽  
Edward J. Matheson ◽  
Christopher R. Fielding ◽  
James L. Best ◽  
Alexander B. Bryk ◽  
...  
Keyword(s):  
Stratigraphic Architecture ◽  
Mud Diapirism

Continental shelf morphology controlled by bottom currents, mud diapirism, and submarine slumping to the east of the Gaoping Canyon, off SW Taiwan

2021 ◽  
Vol 41 (1) ◽  
Author(s):  
Yi-Ching Yeh ◽  
Chung-Lin Tsai ◽  
Shu-Kun Hsu ◽  
Hsiao-Shan Lin ◽  
Kuan-Ting Chen ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Bottom Currents ◽  
Mud Diapirism

Ground-penetrating radar imaging of Albian rudist buildups, central Texas

2015 ◽  
Vol 3 (3) ◽  
pp. SY67-SY81 ◽  
Author(s):  
Xavier Janson ◽  
Keumsuk Lee ◽  
Chris Zahm ◽  
Charles Kerans
Keyword(s):  
Middle East ◽  
Ground Penetrating Radar ◽  
Reservoir Modeling ◽  
Size Difference ◽  
Seismic Resolution ◽  
Stratigraphic Architecture ◽  
Order Of Magnitude ◽  
Central Texas ◽  
Ground Penetrating ◽  
Subsurface Reservoir

Rudist buildups are important reservoirs in many Cretaceous fields in the Middle East, but they are generally near or below seismic resolution. The dimension, shape, and architecture of rudist buildups can be assessed using outcrop, although only partly so because of pseudo-2D observations of geobodies intersecting with the outcrop. We used ground-penetrating radar to enhance our understanding of the shape, dimension, and architecture of Albian rudist buildups in two outcrops in Texas. In the Lake Georgetown spillway, caprinid rudist buildups are 10–30 m wide and 2–7 m high. They are elliptical with an aspect ratio of as much as 1.7. They show no or very little flank development. The older buildup exposed in the Red Bluff Creek area displays 10- to 25-m-wide and 5- to 10-m-high in situ caprinid rudist mound core accumulations with as much as 100-m-wide reworked flanks in the shallower part of the depositional profile. Downdip along the depositional profile, caprinid buildups are 5–20 m wide and 3–7 m high with no flank debris. The buildups in the Lake Georgetown area have similar architecture and comparable size with the downdip buildups exposed in Red Bluff Creek. These buildups were compared with other outcropping Albian buildups in Texas that have different sizes, shapes, and stratigraphic architecture to provide dimensional data that could be used in subsurface reservoir modeling, either for calibrating variogram ranges or to build training images. The rudist buildups exposed in Texas are an order of magnitude smaller than those present in the subsurface in the Middle East, but they have comparable stratigraphic architecture. The size difference might be the result of subsurface buildups being mapped using well-log or core correlations or seismic extractions that cannot resolved at that scale of heterogeneity.

scholarly journals Palaeoecological analysis of maximum flooding zones from the Tithonian (Upper Jurassic) of the Kachchh Basin, western India

Facies ◽  
2020 ◽  
Vol 67 (1) ◽  
Author(s):  
Franz T. Fürsich ◽  
Matthias Alberti ◽  
Dhirendra K. Pandey
Keyword(s):  
Upper Jurassic ◽  
Carbonate Content ◽  
Western India ◽  
Rift Basin ◽  
Benthic Assemblages ◽  
Depositional Sequence ◽  
Sequence Stratigraphic ◽  
Stratigraphic Architecture ◽  
Kachchh Basin ◽  
Rich Fauna

AbstractThe siliciclastic Jhuran Formation of the Kachchh Basin, a rift basin bordering the Malagasy Seaway, documents the filling of the basin during the late syn-rift stage. The marine, more than 700-m-thick Tithonian part of the succession in the western part of the basin is composed of highly asymmetric transgressive–regressive cycles and is nearly unfossiliferous except for two intervals, the Lower Tithonian Hildoglochiceras Bed (HB) and the upper Lower Tithonian to lowermost Cretaceous Green Ammonite Beds (GAB). Both horizons represent maximum flooding zones (MFZ) and contain a rich fauna composed of ammonites and benthic macroinvertebrates. Within the HB the benthic assemblages change, concomitant with an increase in the carbonate content, from the predominantly infaunal “Lucina” rotundata to the epifaunal Actinostreon marshii and finally to the partly epifaunal, partly infaunal Eoseebachia sowerbyana assemblage. The Green Ammonite Beds are composed of three highly ferruginous beds, which are the MFZ of transgressive–regressive cycles forming the MFZ of a 3rd-order depositional sequence. The GAB are highly ferruginous, containing berthieroid ooids and grains. GAB I is characterized by the reworked Gryphaea moondanensis assemblage, GAB II by an autochthonous high-diversity assemblage dominated by the brachiopods Acanthorhynchia multistriata and Somalithyris lakhaparensis, whereas GAB III is devoid of fossils except for scarce ammonites. The GAB are interpreted to occupy different positions along an onshore–offshore transect with increasing condensation offshore. Integrated analyses of sedimentological, taphonomic, and palaeoecological data allow to reconstruct, in detail, the sequence stratigraphic architecture of sedimentary successions and to evaluate their degree of faunal condensation.

The impact of Aptian glacio‐eustasy on the stratigraphic architecture of the Athabasca Oil Sands, Alberta, Canada

Sedimentology ◽  
2019 ◽  
Vol 66 (5) ◽  
pp. 1600-1642 ◽  
Author(s):  
Sean C. Horner ◽  
Stephen M. Hubbard ◽  
Harrison K. Martin ◽  
Cynthia A. Hagstrom ◽  
Dale A. Leckie
Keyword(s):  
Oil Sands ◽  
Athabasca Oil Sands ◽  
Stratigraphic Architecture ◽  
The Impact
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