acase@tulane.edu

A recently discovered fossiliferous zone, the Chapelville fossiliferous horizon, in the Tupelo Tongue of the Coffee Sand in northern Lee County, Mississippi, contains the best preserved and most diverse molluscan fauna known from the Campanian Stage (Late Cretaceous). This fauna contains about three hundred molluscan species and is comparable in both preservation and diversity to the well known Maastrichtian fauna of the Coon Creek Tongue of the Ripley Formation at Coon Creek in McNairy County, Tennessee. Twenty-two families, forty genera, and fifty-seven species of streptoneuran gastropods (exclusive of the Stenoglossa, Ptenoglossa, and Heterostropha) are recognized and are illustrated in a series of 22 plates. Five species of archaeogastropods are described; two of which are new. The Caenogastropoda, exclusive of the Strenoglossa, Ptenoglossa, and Heterostropha, include fifty-two species; twenty-five (including one subspecies) of which are new Protoconchs of several taxa are described here for the first time. Two genera, Demasia and Lemniscolittorina, which had previously been assigned to the archaeogastropoda Family Neritidae and the caenogastropod Family Littorinidae, respectively, are reassigned to the heterostroph families Amathinidae and Mathilildae based on their protoconchs The systematic section contains a new classification that incorporates parts of the recently proposed gastropod classifications of Ponder and Waren (1988) and Haszprunar (1988a, b). The Chapelville gastropoda fauna of the Tupelo Tongue provides a window into the pre-Maastrichtian streptoneuran diversity of the northern U.S. Gulf region. It contains the earliest geologic record of many Cenozoic taxa and is surprisingly modern in many respects / acase@tulane.edu

acase@tulane.edu

acase@tulane.edu

No description available.

The structure and petrology of Upper Precambrian and Cambrian rocks have been studied in detail, in an area 38 miles north - east of Adelaide, South Australia. The rocks occur within a broad zone of high grade metamorphism on the eastern side of the Mt. Lofty Ranges. The Upper Precambrian succession consists predominantly of pelitic and semi - pelitic schists, quartzites, calc - silicate rocks and calc - schists, and the Cambrian sequence of quartzo - feldspathic schists, migmatites, granite gneiss, calc - silicate rocks and minor pelitic schists and quartzites. The rocks have reached the sillimanite grade of metamorphism and the metamorphism is of the low pressure - intermediate type. Dolerites, pegmatites, minor granodiorites and granites intrude the meta - sediments. Mineralogical and structural relationships of the granite gneiss, indicate that it has been formed by recrystalliaation of the quartzo - feldspathic schists. Small scale metamorphic differentiation, appears to have accompanied the recrystallization. The migmatites are believed to have been formed by metamorphic differentiation rather than by anatexis. Three phases of deformation are recognised in the Upper Precambrian rocks and two in the Cambrian. The second deformation recorded in the Upper Precambrian rocks does not appear in the Cambrian rocks. Each deformation has been accompanied by the formation of foliation. In the Proterozoic rocks deformed by the second and third phases of folding, the foliation is a crenulation cleavage. The deformations in both the Upper Proterozoic and Cambrian sequences are considered to be related. Petrofabric studies of quartz, scapolite and biotite are related to the respective macroscopic structures. An analysis of the chronology of crystallisation and deformation of these rocks indicates that crystallisation continued during and after each phase of deformation. Faulting commenced either prior to or during meta - morphism. Intense metasomatic activity followed a later phase of faulting resulting in the widespread development of albitites and in some cases talc ore bodies. The albitites formed in the fault zone were subsequently brecciated by further movement and later healed by the introduction of more metasoinatic fluid. / Thesis (Ph.D.) -- University of Adelaide, Department of Geology, 1966.

Thesis (Ph. D.)--Rutgers University, 2009. / "Graduate Program in Anthropology." Includes bibliographical references (p. 292-305).

Thesis (Ph. D.)--Syracuse University, 2009. / "Publication number: AAT 3385841."

Tesis--Buenos Aires. / At head of title: Universidad de Buenos Aires. Facultad de Ciencias Exactas, Fisicas y Naturales. Reprinted from vol. 39 of Anales del Museo Argentino des Ciencias Naturales. "Bibliografía": p. 120-123.

Thesis (M.S.)--State University of New York at Buffalo, 2008. / Includes bibliographical references (p. 104-111). Also available online.