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首页> 外文期刊>Bulletin of Canadian Petroleum Geology >Salt tectonism in the Fort Norman area, Northwest Territories, Canada
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Salt tectonism in the Fort Norman area, Northwest Territories, Canada

机译：加拿大西北地区诺曼堡地区的盐构造作用

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A number of salt tectonic structures, pillows and diapirs, occur in the Fort Norman area, Northwest Territories. The structures are cored mainly by salt from the Upper Cambrian Saline River Formation and to a lesser extent by little-known salt from the Lower/Middle Cambrian Mount Cap Formation. Salt flow occurred during at least three, and possibly five, periods of time, and most structures experienced two or more salt tectonic phases. Well-documented phases include: post-Devonian - per- Turonian; Late Cretaceous; and post Cretaceous (including post-Paleocene). Cambrian and per-Devonian phases are deduced from equivocal data, and may have been related to epeirogenic events along the Keele Tectonic Zone. The per- Turonian even was compressional and possibly related to Jurrassic/Cretaceous compressional orogenesis in the cordillera. Post-Cretaceous salt tectonics were at least in part related to Laramide compressional tectonics that produced the Franklin Mountains. One Late Cretaceous diapir has no clear relationship to regional tectonic events. The largest salt structure, the multi-phase Gambill Diapir, probably localized right-lateral strike-slip displacements during the Laramide orogeny. Hydrocarbon exploration possibilities include essentially untested thick Lower and Middle Cambrian strata, possible basal sands at the sub-Devonian unconformity, and Paleozoic carbonate reservoirs in contact with Cretaceous source beds.
机译：许多盐构造结构，枕状和底辟，出现在西北地区的诺曼堡地区。这些构造主要由上寒武统盐水河组的盐取芯，在较小程度上由下寒武统/中寒武统山盖组的鲜为人知的盐取芯。盐流发生在至少三个，甚至可能五个时间段内，大多数结构经历了两个或两个以上的盐构造阶段。有据可查的阶段包括：后泥盆世 - per-Turonian;晚白垩世;和后白垩纪（包括后古新世）。寒武纪和泥盆世阶段是从模棱两可的数据中推导出来的，可能与基尔构造带沿线的成壳事件有关。per-Turonian甚至具有压缩性，可能与科迪勒拉山脉的侏罗纪/白垩纪压缩造山作用有关。后白垩纪的盐构造至少在一定程度上与产生富兰克林山脉的拉拉米德压缩构造有关。一个晚白垩世底辟与区域构造事件没有明确的关系。最大的盐构造，多相Gambill Dia辟，可能是拉拉米德造山运动期间的局部右侧走滑位移。油气勘探的可能性包括基本上未经测试的厚厚的下寒武统地层，在泥盆纪下不整合面可能存在的基底砂，以及与白垩纪源层接触的古生代碳酸盐岩储层。

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