Geological characterization of the fernie formation: a long-lived, siliciclastic-carbonate wedge with basinal to coastal plain deposits - Jurassic, West-Central Alberta, Canada

简介：在阿尔伯塔中西部，费尔尼组由碳酸盐岩和硅质岩组成的薄楔形体组成，该楔形体由不整合面约束，并将盆地保留为沿海平原环境。在侏罗纪的大部分时间里，地层堆积在一个向西的斜坡上，跨度长达56 Ma。在侏罗纪末期和白垩纪初期，盆地的形状变成了一个向北开放的线性槽，并被一个上升的高地Omineca高地限制在西部。随着高地的上升，费尔尼组被来自西部的碎屑沉积物所掩埋，但它也被侵蚀，并沿沿着盆地东部边缘在空中暴露。

Introduction: In west-central Alberta the Fernie Formation comprises a thin wedge of carbonate and siliciclastic rocks that is bound by unconformities and preserves basin to coastal plain environments. The formation accumulated on a westward facing ramp during most of the Jurassic Period, a lengthy span of 56 Ma. Towards the end of the Jurassic Period and the beginning of the Cretaceous Period the configuration of the basin changed into a linear trough that opened northward and was bound to the west by a rising highland, the Omineca Highland. As this highland rose the Fernie Formation was buried by clastic sediment contributions from the west, but it was also eroded and exposed subaerially along the eastern margin of the basin.