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Paleoecology Of The Spiriferid Brachiopods Of The Silica Shale Formation (Middle Devonian), S.E. Michigan And N.W. Ohio, Darioush T. Ghahremani

Masters Theses

Spiriferid brachiopods of the Middle Devonian Silica Formation in northwestern Ohio and southeastern Michigan show many Features that are useful For paleoecologic interpretation. This study is undertaken to examine and interpret the paleoecology and paleobiology of six spiriferid brachiopods Mucrospirifer prolificus, Mucrospirifer grabaui, Mucrospirifer profundus, Mucrospirifer mucronatus, Paraspirifer bownockeri and Spinocyrtia euryteines. All are very abundant and can be easily collected from quarries in the Silica Formation near Sylvania, Ohio.

Fourteen different morphologic characteristics have been tabulated for all specimens used in this study. These characteristics allow interpretations of the ontogenetic de velopment and ecologic relationships of the six studied …

Structural Analysis Of The Great Smoky Thrust Sheet Along The Little Tennessee River, John E. Livingston

Masters Theses

This study involves a structural analysis of a portion of the Great Smoky thrust sheet in the Great Smoky Mountains of Tennessee. Four groups of folds and related structures have been identified in this area. the earliest folds include second-order mesoscopic F1 folds with a slaty cleavage axial plane foliation (S1). These folds occur on the limbs of first-order macroscopic F1 folds which are discordant to the Great Smoky fault. In several places, the F1 folds are overprinted by mesoscopic F2 folds which are characterized by crenulation cleavage axial plane foliation (S2). F2 folds include tight to isoclinal folds with …

Shallow Water High-Magnesium Calcite Mud Production And Dispersal, St. Croix, U.S. Virgin Islands, Jonathan A. Fuller

Masters Theses

Boiler Bay, on the northeast coast of St. Croix, is 200 m wide, 800 m long, and about 3-5 m. deep. The hay is separated from the open Caribbean by a barrier reef. Winds from the east drive currents westward across a narrow carbonate platform (where they entrain platform-derived carbonate mud) and into the east end of the bay. Longshore currents continue westward through the bay, and the entrained platform- derived suspended load is combined with bay-produced carbonate mud and swept northwestward off the platform after passing through a 6 km complex of bays along the northeastern shore. The suspended …

Sedimentology Of The Hannibal Formation In Northeastern Missouri And Western Illinois, Michael Harry Deming

Masters Theses

"The Hannibal Formation (Kinderhookian) occurring in northeastern Missouri and western Illinois is a fine-grained, terrigenous, sedimentary unit which can be divided into an upper and a lower portion, based on lithology. The upper portion consists of alternating coarse and argillaceous, fine siltstone units, while the lower portion consists of a silty mudstone with an occasional thin siltstone unit. At the extreme western margin of the formation, near where the Hannibal almost pinches out, the formation consists entirely of a silty claystone. Extending southward along the study area, the coarse siltstone units of the upper Hannibal become thinner, and eventually pinch …

Landsat Image Analysis Of Linears And Lineaments In The Tri-State District, Missouri-Oklahoma-Kansas, Solomon Hartley Toweh

Masters Theses

"Lineations within the Tri-State mining district are classified as megalineaments, lineaments and linears, based on length. One megalineament, 120 lineaments and 205 linears are identified on the LANDSAT imagery. In order of importance a dominant northeast set, northwest set, north-south set and east-west set are recognized. These range from 0.8 miles (1.3 km) to 68 miles (109.4 km) in length.

Major lineation trends spatially relate with trends of mined areas In the Picher field both northeast and northwest lineations generally parallel mined areas. In the Galena field ore and lineations trend northeast while in the Joplin and Duenweg-Webb City-Oronogo field …