Graduate Thesis Or Dissertation
 

Stratigraphy and structure of the Horseshoe Gulch area, Etna and China Mountain quadrangles, California

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/n583xx349

Descriptions

Attribute NameValues
Creator
Abstract
  • The Horseshoe Gulch area includes 16 square miles in the Eastern Paleozoic Belt of the Klamath Mountains geologic province north of Callahan, California. Fossiliferous Late Ordovician and Silurian limestones and unfossiliferous greywackes, arkoses, shales, mudstones, schists, and phyllites, and other terrigenous clastic rocks are exposed in a broad fault zone in the area of study. It is concluded that the limestones represent a clear, stable, and relatively shallow water environment of deposition. These limestones are found associated with a geosynclinal sequence of rock units. Eleven mappable units grouped into upper and lower thrust plates, are recognized. The fault zone in the Horseshoe Gulch area, approximately one mile wide, is characterized by a prominent folded thrust fault that is part of the Mallethead Thrust. The Mallethead Thrust, whose age is at least post-Late Silurian in the area, has placed upper plate unfossiliferous, pre-Cretaceous age chlorite grade metamorphic rocks over the Early Paleozoic unmetamorphosed limestones and clastics of the lower plate. The trace of the Mallethead Thrust is very sinuous and irregular.
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Publisher
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 256 Grayscale, 24-bit Color) using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.Plates: Master map file scanned at 600 dpi, 24-bit color on a Paradigm ImagePRO GxT 42 HD (OEM version of ColortracSmartLF Bx 42). Image manipulated by SmartLF1.3.05.
Replaces

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
file details ZdanowiczTedA1972.pdf 08/07/2017 Public
file details Zdanowicz1.jpg 08/07/2017 Public
file details Zdanowicz2.jpg 08/07/2017 Public
file details Zdanowicz3.jpg 08/07/2017 Public