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Facies, paleoenvironments, and basin analysis of the Late Neoproterozoic (Ediacaran) Upper Conception and St. John's groups, West Conception Bay, Newfoundland.

机译:纽芬兰西构想湾晚新元古代(埃迪卡拉安)上观和圣约翰群的相,古环境和盆地分析。

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摘要

The Avalon Peninsula of eastern Newfoundland contains one of the best deep-water succession of fossiliferous Ediacaran (ca. 630--542 Ma) strata known anywhere. Most previous studies of this region have focused on the southeastern Avalon Peninsula.; My studies, in the Bay Roberts and Spaniards Bay localities, extend the stratigraphic and basin analysis to the northern "West Conception sub-basin". The studied area contains a terminal Neoproterozoic succession that is approximately 1200 m thick, and consists of deep-marine, fine-grained siliciclastic and volcaniclastic deposits. Two major successions can be identified (TR1-TR2). The basal TR1 (720 m thick) consists of unorganized coarsening-and thinning-upward decameter-scale succession, and is composed of thick-bedded TDE turbidites (FA1: Drook association), thin and medium-bedded T(C)DE turbidites (FA2: Mistaken Point association) and thin-medium-bedded reddish T(B)DE turbidites (FA3: Reddish Mistaken Point association). (Abstract shortened by UMI.)
机译:纽芬兰东部的阿瓦隆半岛(Avalon Peninsula)包含着任何地方都已知的化石埃迪卡拉(Ediacaran)(约630--542 Ma)地层中最好的深水演替之一。该地区以前的大多数研究都集中在东南阿瓦隆半岛上。我的研究是在罗伯茨湾和西班牙湾地区进行的,将地层学和盆地分析扩展到北部的“西构想子盆地”。所研究的区域包括一个新元古代末期,约1200 m厚,由深海,细粒硅质碎屑和火山碎屑沉积物组成。可以确定两个主要的继承(TR1-TR2)。基层TR1(720 m厚)由无序的粗化和稀疏向上十米级规模的演替组成,由厚层的TDE浊度(FA1:Drook association),薄层和中层的T(C)DE浊度组成( FA2:错误点关联)和薄中等层带红色的T(B)DE浊度(FA3:红色错误点关联)。 (摘要由UMI缩短。)

著录项

  • 作者单位

    Queen's University at Kingston (Canada).;

  • 授予单位 Queen's University at Kingston (Canada).;
  • 学科 Geology.
  • 学位 M.Sc.
  • 年度 2005
  • 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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