首页> 外文学位 >Stratigraphy, structure and tectonic history of the Pink Mountain Anticline, Trutch (94G) and Halfway River (94B) map areas, northeastern British Columbia.
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Stratigraphy, structure and tectonic history of the Pink Mountain Anticline, Trutch (94G) and Halfway River (94B) map areas, northeastern British Columbia.

机译:不列颠哥伦比亚省东北部的Trutch(94G)和Halfway River(94B)地图区域的粉山背斜线的地层,结构和构造历史。

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摘要

Pink Mountain Anticline stands out in front of the Foothills of northeastern British Columbia (57°N, 123°W). Geologic mapping and prestack depth-migrated seismic sections show that it is localized above and west of a northwest-trending subsurface normal fault. Along with isopach maps they demonstrate episodic normal movement during deposition of the Carboniferous Stoddart Group, Triassic Montney Formation and possibly the Jurassic-Cretaceous Monteith-Gething formations. West of this step, during Laramide compression, a pair of backthrusts nucleated on either side of a minor east-west trending Carboniferous fault and propagated across it in an en échelon pattern. One backthrust ramped laterally across the area and separated the Pink Mountain and Spruce Mountain structures, which both are contained within a 30+ km long pop-up structure above the Besa River Formation detachment.; Glomerspirella fossils confirm the existence of the Upper Jurassic Upper Fernie Formation and Upper Jurassic to Lower Cretaceous Monteith Formation at Pink Mountain.
机译:粉红山背斜在不列颠哥伦比亚省东北部的山麓丘陵前(北纬57°,西经123°)突出。地质测绘和叠前深度偏移地震剖面表明,它位于西北向地下地下正断层的上方和西部。它们与等渗线图一起显示了石炭系Stoddart群,三叠系Montney组以及侏罗系-白垩纪Monteith-Gething组沉积过程中的正常运动。在此步骤的西边,在拉拉酰胺压缩过程中,一对反向冲动在一个东西向趋势的石炭纪小断裂的两侧成核,并以埃朗峰模式传播。一道反冲作用横穿该区域,将粉红山和云杉山结构隔离开来,这两个结构都包含在Besa河形成分队上方30多公里长的弹出式结构中。 Glomerspirella 化石证实了粉山上侏罗统上弗尼组和上侏罗统到下白垩统蒙特斯组的存在。

著录项

  • 作者

    Hinds, Steven Jeffrey.;

  • 作者单位

    University of Calgary (Canada).;

  • 授予单位 University of Calgary (Canada).;
  • 学科 Geology.
  • 学位 M.Sc.
  • 年度 2002
  • 页码 194 p.
  • 总页数 194
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地质学;
  • 关键词

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