Masters Theses

Abstract

"Depletion of ore in Missouri's old lead districts and the opening of the state's new lead district adds impetus to understanding and delineating geologic structure in and adjacent to the new lead district. Image and geomorphic analysis, hydrologic data, and subsurface structural contour mapping are used in interpretation of geologic structure in Dent, Shannon, Reynolds, and Carter counties, Missouri. Unlike the time consuming surface geologic mapping, the modes of investigation used in this study enabled the writer to make a larger, regional-scale study with results comparable to those attainable by surface mapping. The area is covered by thick residual soils and terrain conditions are difficult. Subsurface structural contour mapping shows a series of northwest trending alternating highs and lows, the Precambrian having the most relief. Possible faulting occurs along the margins of these structures. Several other structures, including individual knobs, were also detected.

ERTS imagery analysis enabled delineation of many major lineaments, lineament sets, and pairs, of which 8 are named and described. These lineaments trend primarily east and northeast. Circular and polygonal features were also detected. Lineaments identified by thermal IR and SLAR imagery analysis are in agreement with those detected on the ERTS imagery. In addition, the thermal IR and SLAR analysis delineated smaller lineaments that are thought to reflect local fracture patterns. Additional circular features were detected on the thermal IR and SLAR imagery. These are thought to be surficial reflections of buried Precambrian knobs. The polygonal features appeared also on the SLAR imagery.

Hydrologic data show agreement with the imagery and subsurface interpretations where overlap exists between these data.

A gravity profile supplements the study in one part of the area. The anomalies coincide with anomalous imagery and hydrologic features.

Large Precambrian outcrop areas are found in the southwestern part of the study area and northeast of the study area. These areas are intensely fractured. Lineaments traced into these areas were found to be in agreement with known fracture patterns of the areas. This indicates that the lineaments with their related hydrologic and geomorphic features are directly related to Precambrian basement fracture and faulting patterns. Repetition of individual anomalous "features" from subsurface mapping to hydrology to imagery and finally gravity lends support to the interpretation of the detected structures"--Abstract, pages iii-iv.

Advisor(s)

Maxwell, James C.

Committee Member(s)

Beveridge, Thomas R. (Thomas Robinson), 1918-1978
Rockaway, John D.

Department(s)

Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Geology

Publisher

University of Missouri--Rolla

Publication Date

1974

Pagination

vii, 64 pages

Note about bibliography

Includes bibliographical references (pages 58-60).

Geographic Coverage

Dent County (Mo.)
Shannon County (Mo.)
Reynolds County (Mo.)
Carter County (Mo.)

Time Period

Precambrian

Rights

© 1974 Gregory Paul Smith, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Geology -- Missouri -- MapsPhotography in geology -- MapsImage processingGeographic information systems

Thesis Number

T 2929

Print OCLC #

6020302

Electronic OCLC #

914238858

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Geology Commons

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Thesis Location

 
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