Doctoral Dissertations
Abstract
"The dissertation area lies on the western flank of the Ozark uplift between Lebanon and Camdenton, Missouri. In the northwestern corner of the study area a portion of the Decaturville cryptoexplosive structure is exposed. The dominant structure outside the disturbed zone is a northwest-trending asymmetrical anticline with a subsidiary normal fault dipping southwest on the steeper southwest limb.
The area is mapped in considerable detail in order to describe subtle structural features. To overcome a problem of poor exposures, new key beds are defined which greatly increase structural control. Significant structures recognized as a result are the Dry Auglaize anticline, the Dry Auglaize fault and the outer acruate anticline and syncline of the Decaturville structure.
Interesting aeromagnetic anomalies occur in the study area. Pre- cambrian topography inadequately explains the dominant magnetic anomaly. The origin of this anomaly is considered to be a plate roughly 2,300 feet thick with the susceptibility of diorite on the upthrown side of the Dry Auglaize fault zone.
The Decaturville structure is an astrobleme. It has no clear relationship to regional structure, exhibits a circular symmetry, and shows a unique style of brecciation and internal structures that are difficult to reconcile by normal tectonic means. Other corroborative evidence is the presence of shatter cones, crystal lattice degradation, and the absence of volcanic rock"--Abstract, page iii.
Advisor(s)
Spreng, Alfred C., 1923-2012
Committee Member(s)
Gentile, Richard J.
Beveridge, Thomas R. (Thomas Robinson), 1918-1978
Grant, S. Kerry
Proctor, Paul Dean, 1918-1999
Department(s)
Geosciences and Geological and Petroleum Engineering
Degree Name
Ph. D. in Geology
Publisher
University of Missouri--Rolla
Publication Date
1977
Pagination
vii, 140 pages
Note about bibliography
Includes bibliographical references (pages 116-123).
Geographic Coverage
Stoutland, Missouri
Rights
© 1977 Chester Encell Nichols, All rights reserved.
Document Type
Dissertation - Open Access
File Type
text
Language
English
Thesis Number
T 4260
Print OCLC #
5995641
Recommended Citation
Nichols, Chester Encell, "Geology of the southern half of the Stoutland, Missouri Quadrangle" (1977). Doctoral Dissertations. 361.
https://scholarsmine.mst.edu/doctoral_dissertations/361
Areal Geology
Nichols_Plate_2.tif (326238 kB)
Structure
Nichols_Plate_3.tif (219781 kB)
Aeromagnetic Contour Map
Comments
Three plates, folded in the back pocket of the manuscript, are provided here as supplemental files. Due to their large size, these files may take more time to download.