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

蕨类植物地层的地质特征：一个长期存在的硅质碎屑-碳酸盐岩楔子，具有盆地到沿海平原沉积物 - 侏罗纪，加拿大艾伯塔省中西部

• 批准号: 417627-2011
• 负责人: Krause, Federico
• 金额: $ 2.86万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=494618
• 关键词: Geological; characterization; fernie; formation; long

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.

简介：在艾伯塔省中西部，费尔尼组由薄薄的碳酸盐和硅质碎屑岩组成，被不整合面包围，保存了盆地到沿海平原的环境。在侏罗纪的大部分时间里，该建造聚集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，盆地的形态变成了一个向北开放的线性海槽，并被一个上升的高地--奥米内卡高地--向西连接。随着这一高地的上升，费尔尼组被来自西部的碎屑沉积物埋藏，但它也被盆地东部边缘的地下侵蚀和裸露。