"Lithologic and thickness data of the Lower Ordovician rocks of the Roubidoux Formation, south central Missouri, were interpreted from sample logs. Maps included are based on structure, thickness and lateral and vertical lithologic variability. Sand distribution in the Roubidoux is represented by a "sand percentage" map, a "sand isolith" map, and a "tripartite sand distribution" map. The Roubidoux Formation consists of a sequence of dolomite, sandy dolomite, sand and chert. It is believed that the Roubidoux was deposited on a stable marine platform receiving a supply of elastics from the north and northeast. The sands were deposited by longshore or coastal currents paralleling the Roubidoux strandline in Kansas. Sand transport was greatly affected by the velocities of surface currents and water depth. Most sand accumulated along low water shoals.
The sand probably settled as broad linear ridges that underwent erosion concurrently with the deposition of these ridges, transporting the ridge sands into the lows between ridges, giving the sands a sheet-like character. Most sand is concentrated in the eastern half of the mapped area, where it is distributed throughout the formation, whereas sands in the west are concentrated in the upper third.
Detailed correlations are limited by the lack of drillholes in the region. Also, the partial or complete removal of the formation in outcrop, and the partial or complete removal of carbonate as a by-product of dissolution processes falls short providing a satisfactory data base"--Abstract, pages ii-iii.
Spreng, Alfred C., 1923-2012
Leighly, Hollis P., 1923-2004
Rechtien, Richard D.
Geosciences and Geological and Petroleum Engineering
M.S. in Geology and Geophysics
University of Missouri--Rolla
x, 58 pages, maps
Roubidoux Formation, south central Missouri
© 1983 Michael William Harbaugh, All rights reserved.
Thesis - Open Access
Lithofacies -- Missouri
Geology -- Missouri
Geology, Stratigraphic -- Ordovician
Sand -- Missouri
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Harbaugh, Michael William, "Lithofacies analysis of the Roubidoux Formation, south central Missouri" (1983). Masters Theses. 4063.
Structural Contour Map on the Base of the Roubidoux Formation
Plate_II.tif (52659 kB)
Sand Percentage Map of the Roubidoux Formation
Plate_III.tif (52986 kB)
Tripartite Sand Distribution Map combined with the Sand Isolith of the Roubidoux Formation
Plate_IV.tif (52796 kB)
Entropy Values and Lithology Map combined with the Isopach of the Roubidoux Formation
Plate_V.tif (52498 kB)
Fence Diagram of the Roubidoux Formation