Reconnaissance of Tertiary structures along Nares Strait, Ellesmere Island, Canadian Arctic Archipelago
Reconnaissance of Tertiary structures along Nares Strait, Ellesmere Island, Canadian Arctic Archipelago
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加拿大北极群岛埃尔斯米尔岛纳雷斯海峡沿线第三级结构勘察
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
Christiaan D. S. De Vries
中科院分区：
文献类型：
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作者：
Ulrich Mayr;Christiaan D. S. De Vries
在埃尔斯米尔岛南部科普斯湾和北部贝尔德角之间的沿海地区，至少可以区分出第三纪构造变形的三个阶段。它们是：1）古新世隆升，2）始新世逆冲和3）走滑断层，可能不早于中新世。
抬升过程是由第三纪粗糙的、寡聚的冲积砾岩的残余物记录的。在该地区的南部和中部，砾岩被下古生代岩石过度推挤。达令半岛和贾吉达利岬北部存在共轭走滑断层。沿贾吉戴利断层带的左行位移初步估计为 19 公里。
内雷斯海峡地区的逆冲断层和走滑断层可能对应于尤里卡造山运动的主要阶段。
In the coastal area of Ellesmere Island between Copes Bay in the south and Cape Baird in the north, at least three phases of Tertiary structural deformation can be distinguished. These are: 1) Paleocene uplifting, 2) Eocene thrusting and 3) strike-slip faulting, probably not younger than Miocene.
Uplifting is documented by remnants of a coarse, oligomictic, alluvial conglomerate of Tertiary age. In the southern and central part of the area the conglomerate is over-thrusted by Lower Palaeozoic rocks. Conjugate strike-slip faults are present on Darling Peninsula and northern Judge Daly Promontory. Sinistral displacement along the Judge Daly fault zone is estimated tentatively at 19 km.
Thrusting and strike-slip faulting in the Nares Strait area probably correspond to the main phase of the Eurekan orogeny.