Masters Theses


"Filled sinkholes have long been known to occur in the carbonate rocks of Missouri. A sandstone unit occurs in these sinkholes at their outer margin, forming a rim, and is called here the rimrock sandstone. Samples of rimrock sandstone, from an area northeast of Rolla, Missouri were studied. Grain size, heavy mineral and. thin section analyses of these samples were carried out. Size analysis data suggest that, texturally, the rimrock sandstone is similar to the St. Peter sandstone and that this formation could have supplied sands for the formation of rimrock. Field evidences suggest that continental conditions prevailed at the time of the formation of the sandstone under study. The median grain size is similar all over the area for this sandstone and it is mineralogically mature. This could be due to the maturity of the source rock. Size and shape of the detrital sand grains have been altered due to secondary enlargement through silicification. It seems that most of the filled sinkholes have resulted from the simultaneous deposition and sinking of the sediments, due to the solution activity. Association with the white and purple shales, alumina clays and coals suggest that the rimrock is of basal Pennsylvanian age. The clay deposits resting over the rimrock sandstone in these sinkholes are of great economic value due to their heat resisting character"--Abstract, pages ii-iii.


Spreng, Alfred C., 1923-2012

Committee Member(s)

Wilson, Tommie C., 1939-
Beveridge, Thomas R. (Thomas Robinson), 1918-1978
Fellows, Larry D. (Larry Dean), 1934-


Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Geology


V. H. McNutt Memorial Foundation


University of Missouri--Rolla

Publication Date



xii, 87 pages

Note about bibliography

Includes bibliographical references.

Geographic Coverage

Rolla (Mo.)


© 1970 Upendra Jayantilal Parikh, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Sandstone -- Missouri -- Analysis
Sinkholes -- Missouri -- Rolla
Geology, Stratigraphic
Formations (Geology) -- Missouri
Sedimentation and deposition -- Missouri

Thesis Number

T 2483

Print OCLC #


Electronic OCLC #


Included in

Geology Commons