A geophysical investigation of an area in Christian County, Missouri

Author

Edwin J. Ballantyne Jr.

Abstract

"A vertical intensity magnetic survey of 144 square miles in Christian County, southwest Missouri revealed an 825 gamma anomaly having a closure of 9 square miles. A three mile gravity traverse across the magnetic anomaly detected a positive gravity anomaly in excess of six mllligals.

Calculations showed that a Precambrian hill large enough to cause the observed magnetic anomaly would outcrop at the surface. Because Precambrian rocks are known to be buried under a sedimentary layer, this hypothesis was rejected.

Theoretical anomalies of several geometrical bodies at calculated depths were visually compared with the measured magnetic and gravity profiles. A peridotite plug, depth 4,000 feet, vertical thickness 14,000 feet, cross-sectional radius 4,200 feet; a diabase plug of the same dimensions with heavy non-magnetic sulfide minerals present; and a diabase plug, depth 2,400 feet, vertical thickness 15,600 feet, cross- sectional radius 4,800 feet produced the necessary theoretical anomalies.

On the basis of present geophysical and geological evidence, the structure is not of economic importance"--Abstract, page ii.

Advisor(s)

Rupert, Gerald B., 1930-2016

Committee Member(s)

Zenor, Hughes M., 1908-2001
Maxwell, James C.
Clark, George Bromley, 1912-

Department(s)

Mining Engineering

Degree Name

M.S. in Mining Engineering

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1961

Pagination

viii, 66 pages

Note about bibliography

Includes bibliographical references (pages 33-34).

Geographic Coverage

Christian County, Missouri

Rights

© 1961 Edwin J. Ballantyne, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Geophysics -- Missouri -- Christian CountyGeology, Stratigraphic -- PrecambrianPeridotite -- Missouri -- Christian County

Thesis Number

T 1345

Print OCLC #

5936012

Electronic OCLC #

982493000

Recommended Citation

Ballantyne, Edwin J. Jr., "A geophysical investigation of an area in Christian County, Missouri" (1961). Masters Theses. 4171.
https://scholarsmine.mst.edu/masters_theses/4171