Masters Theses

Keywords and Phrases

Miscibility gap

Abstract

"This problem is an attempt to correlate grade of metamorphism (normally assumed to be temperature dependent) with the shape and dimensions of a solid miscibility gap. Such a correlation might permit mapping of a continuously variable function of metamorphism. The system, calcite and dolomite-ankerite, was chosen for study because of its relative simplicity. Samples of quartz-carbonate granulite were collected from the Waits River formation in southeastern Vermont through a range of metamorphic grades. Refractive index, "molecular" volume, manganese content, and density were determined for the carbonates of four of these samples. These values are plotted on a compositional diagram to show the proportions of the miscibility gap for different grades of metamorphism. No measurable narrowing of the gap is demonstrated. A progressive increase with metamorphic grade in the refractive indices of calcite and ankerite was noted, and an attempt is made to explain it. Other unpredicted relations are mentioned, and a promising single crystal X-ray technique is described. Recommendations are made for further study of this problem"--Abstract, page 1.

Advisor(s)

Rosenfeld, John L., 1920-

Department(s)

Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Geology

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1953

Pagination

iii, 37 pages

Note about bibliography

Includes bibliographical references (pages 35-36).

Geographic Coverage

Vermont

Rights

© 1953 Ralph Dale Cotter, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Metamorphism (Geology)
Carbonates
Metamorphic rocks -- Vermont

Thesis Number

T 1053

Print OCLC #

5918608

Electronic OCLC #

934440545

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Thesis Location

 
COinS