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首页> 外文学位 >UPPERMOST DEVONIAN AND LOWER CARBONIFEROUS STRATIGRAPHY, SEDIMENTATION, AND DIAGENESIS, SOUTHWESTERN DISTRICT OF MACKENZIE AND SOUTHEASTERN YUKON TERRITORY.
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UPPERMOST DEVONIAN AND LOWER CARBONIFEROUS STRATIGRAPHY, SEDIMENTATION, AND DIAGENESIS, SOUTHWESTERN DISTRICT OF MACKENZIE AND SOUTHEASTERN YUKON TERRITORY.

机译：麦肯锡西南分布区和东南育空地区上泥盆纪上，下部石炭纪地层，沉积和渗水作用。

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摘要

The uppermost Devonian and Carboniferous in SW District of Mackenzie and SE Yukon Territory form a thick succession of continental terrace wedge deposits. These comprise: a shale lithosome that intertongues eastward with a lower interval of dominantly terrigenous slope and shelf facies (upper Banff and coeval Yohin formations); a middle succession with carbonate-platform facies (ascending order: Pekisko, "Shunda", Prophet, and Flett formations); and an upper interval of delta facies (Mattson Formation). Basinal and prodelta shale in the upper Besa River Formation constitute the western part of the shale lithosome; and, proceeding upward, the lower Banff, Clausen, and Golata formations are its eastern tongues. The lower Banff is mainly basinal shale. Neritic shelf limestone and sandstone occur in the regressive upper Banff. Graded beds of siltstone, sandstone, and limestone dominate slope to shelf facies of the lower Yohin, which overlies the Besa River; the upper Yohin is chiefly shallow-neritic sandstone. Four carbonate platforms, which prograded westward and comprise coeval belts of shallow- to deep-water facies, are present. Platform shelf limestone constitutes most of the Pekisko, which abruptly overlies the Banff. The cyclic Prophet platform facies gradationally overlie Besa River and Clausen basinal shale, are mainly chert-rich lower slope spiculite and limestone, and both underlie and pass eastward into more proximal, "Shunda" and Flett, platform deposits. The cyclic Flett overlies the Prophet and "Shunda", and is mainly shelf margin and middle to upper slope limestone. Yohin, Prophet, and Flett slope facies have submarine channel scars. The Golata, mostly prodelta shale, conformably overlies Prophet and Flett facies. Mattson deltaic sandstone overlies and passes westward into the Golata and upper Besa River. Calcite cement precipitated in meteoric-phreatic and subsurface zones, and siliciclastics had a northern, dominantly sedimentary provenance.; The name Rundle Group (comprises: Pekisko, "Shunda", Prophet, Flett, and locally Clausen) is extended into the area; Etanda Formation is abandoned. The Flett is redefined to exclude the Prophet and Golata, and is subdivided into the Tlogotsho, Jackfish Gap, and Meilleur members.; Thirteen surface and 16 subsurface stratigraphic sections provided data. Palynomorphs, foraminifers, corals, and conodonts provided biostratigraphic control.
机译：麦肯齐西南部和育空地区的最上层泥盆纪和石炭纪形成了厚厚的陆相阶地楔形沉积。这些包括：页岩岩性，向东交汇，以较低的陆源陆坡和陆相相隔（上班夫和同代尤因地层）。具有碳酸盐台地相的中层演替（升序：Pekisko，“ Shunda”，先知和弗莱特地层）；和三角洲相的上层间隔（马特森组）。贝萨河上游地区的盆地和三角洲页岩构成了页岩岩体的西部。向上走，较低的班夫，克劳森和戈拉塔地层是其东部的舌头。下班夫主要为盆地页岩。递归的上班夫（Banff）出现了神经质的石灰岩和砂岩。粉砂岩，砂岩和石灰岩的渐变层在比萨河上空的尤因河下游的陆相至斜坡相中起主导作用。 Yohin的上部主要是浅神经砂岩。目前有四个碳酸盐岩台地，它们向西推进，包括浅水相至深水相的近代带。平台架石灰石构成了Pekisko的大部分，而Pekisko突然覆盖了Banff。周期性的Prophet平台相逐渐覆盖Besa河和Clausen盆地页岩，主要是富于cher石的下坡坡闪石和石灰岩，都位于并向东进入更近端的“ Shunda”和Flett平台沉积物中。周期性弗利特（Flett）覆盖着先知和“顺达”，主要是陆架边缘和中上斜坡石灰岩。 Yohin，Prophet和Flett斜坡相具有海底通道伤痕。 Golata（主要为前陆页岩）一致地覆盖了先知和弗莱特相。 Mattson三角洲砂岩覆盖并向西进入Golata和上Besa河。方解石水泥沉淀在陨石-深水区和地下区，硅质碎屑岩具有北部占优势的沉积物源。 Rundle组（由Pekisko，“ Shunda”，先知，Flett和本地Clausen组成）已扩展到该区域； Etanda编队被废弃。重新定义了Flett，以排除先知和Golata，并将其细分为Tlogotsho，Jackfish Gap和Meilleur成员。提供了13个地面和16个地下地层剖面数据。泥ly，有孔虫，珊瑚和牙形石提供了生物地层学控制。

著录项

  • 作者

    RICHARDS, BARRY CHARLES.;

  • 作者单位

    University of Kansas.;

  • 授予单位 University of Kansas.;
  • 学科 Geology.
  • 学位 Ph.D.
  • 年度 1983
  • 页码 434 p.
  • 总页数 434
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地质学;
  • 关键词

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