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Sequence stratigraphy of Lower Paleozoic rocks, Inyo Mountains, California.

机译:下古生界层序地层学,加利福尼亚伊诺山。

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摘要

Uppermost Cambrian (?) through Lower Silurian strata in Mazourka Canyon and the Talc City Hills in the Inyo Mountains region of California can be grouped into five third-order sequences bounded by unconformities marked by basal conglomerates, facies mismatches, and the development of karst features.; The lowest sequence boundary separates the Upper Cambrian (?) Tamarack Canyon Dolomite from the overlying Ordovician Al Rose Formation. The second boundary is placed at the base of the Eureka Quartzite in the Talc City Hills and about 10 m below the top of the Badger Flat Limestone in Mazourka Canyon. The third boundary lies at the base of the Johnson Spring Formation in Mazourka Canyon and is 24 m above the base of the Eureka Quartzite the Talc City Hills, and the fourth boundary occurs just above the contact between the lower (Upper Ordovician) and middle (Lower Silurian) members of the Ely Springs Dolomite. Correlation of these sequence boundaries cratonward is somewhat problematic due to their outboard position on the paleoshelf.
机译:可以将Mazourka峡谷中的下寒武统地层至加利福尼亚Inyo山地区的滑石城山的最高寒武纪(?)分为五个三阶序列,这些序列以基底砾岩,相错配以及岩溶特征的发展为标志,存在不整合面。 。;最低层序边界将上寒武统(?)Tamarack峡谷白云岩与上覆的奥陶纪Al Rose组分开。第二个边界位于滑石城丘陵的尤里卡石英岩底部,在马祖卡峡谷的the平石灰岩顶部下方约10 m。第三个边界位于Mazourka峡谷约翰逊温泉组的底部,在尤里卡石英岩滑石山丘的基础之上24 m,第四个边界恰好位于下部(上奥陶纪)和中部(下志留纪成员)是伊利温泉白云岩的成员。这些序列边界在火山口的相关性有些问题,因为它们在古货架上的外侧位置。

著录项

  • 作者

    Dornfest, Robin M.;

  • 作者单位

    San Jose State University.;

  • 授予单位 San Jose State University.;
  • 学科 Geology.
  • 学位 M.S.
  • 年度 2004
  • 页码 130 p.
  • 总页数 130
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地质学;
  • 关键词

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