WebMay 14, 2024 · For example, reef formation is not resumed after the Ireton Clay deposition in the Western Canada basin, and reefs are missing in the Nisku carbonate formation that terminated the Frasnian Stage. CONCLUSIONS. The Earth’s Paleozoic history includes five stages of framework reef formation: Early Cambrian, Middle–Late Ordovician, Silurian ...
Hydrocarbon breaching of a regional aquitard: The Devonian Ireton
WebMar 1, 1999 · This oil is inferred to have migrated up-dip from mature Duvernay sources via porous zones in the Upper Devonian carbonates, and accessed Lower Mannville porous and permeable strata through breaches in the Devonian Ireton Formation at the northern end of the Bashaw complex. The oil then migrated eastward into the Dina reservoir in the Provost … WebJun 1, 2011 · The Ireton aquitard provides the principal control to cross-formational fluid flow in the area. Over much of the Bashaw Reef Complex, the Ireton aquitard ranges from … エクセル or検索 文字列
Lower Upper Devonian Conodonts from Alberta, Canada
Ireton Formation: Frasnian: upper: calcareous shale and argillaceous limestone middle: fissile grey-green shale with calcirudite beds lower: massive and banded limestone with shale partings: 250 m (820 ft) Cooking Lake Formation: Frasnian: limestone: fossiliferous mudstone and wackestone, grainstone, … See more The Woodbend Group is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin. It was first described in the British American Pyrcz No. 1 well by Imperial Oil geological staff in … See more The Woodbend Group is conformably overlain by the Winterburn Group and conformably overlays the Beaverhill Lake Group. It is transgressive in the Peace River Arch and Tathlina … See more The Formation is composed of crystalline and dolomitized limestone (Cooking Lake Formation) in off-reef areas, bituminous shale and … See more The Woodbend Group reaches a maximum thickness of 700 metres (2,300 ft) in northern Alberta (where reefs were developed), and has typical thickness of 300 metres (980 ft) in southern and central Alberta. It extends laterally from north-eastern See more WebJan 1, 2013 · The bottom rock, Ireton is composed of calcareous shales and argillaceous limestone. The Middle Nisku with a thickness of 20 m has the highest porosity of 20.9% and a permeability of 91 md. The porosity in the other parts of the Nisku and Calmar and Ireton Formations is usually <5.0%. WebThe sediments of the Ireton are composed of terrigenous clay transported over a shelf area in the east, combined with fine carbonate derived from the scattered reefs throughout the … エクセル or 使い方 if