Thesis (M.A.)--University of North Texas, Aug., 2009. / Title from title page display. Includes bibliographical references.

The Striped Rock granite pluton is an epizonal A-type intrusion emplaced into Grenville age gneisses at 748 Ma. Isotopic, petrographic, and textural evidence indicate that the facies comprising this pluton are differentiates of a homogeneous magrna and not the result of multiple intrusions. Strontium isotopic data preclude the Striped Rock granite from being a partial melt of basement gneisses similar to those presently exposed in the Blue Ridge province. Isotopic data also suggest that it is unlikely that the Striped Rock granite formed by simple differentiation of a mantle derived melt. Of the many models proposed for the petrogenesis of A-type granites the models that are most consistent with the physical and chemical characteristics of Striped Rock granite are those employing interaction between a basaltic magma and an evolved crustal source. Of particular interest, here, is the Inodel proposed by Barker et al. (1975) for the formation of the Pikes Peak batholith. The environment of formation, intensive variables (as interpreted from petrographic studies), mineralogy, and chemistry of the fayalite free granite of Pikes Peak and the Striped Rock granite closely parallel one another, suggesting a similar process for their formation. The "reaction melting" process outlined by Barker et al. (1975) is consistent with both isotopic and limited trace element data from Striped Rock granite. The Striped Rock granite is part of the Late Precambdan Magmatic Province (LPMP). A detailed study of Striped Rock granite has allowed this pluton to be compared and contrasted with other LPMP rocks. This comparison has lead to the recognition of two distinctly different categories of late Precanlbrian felsic intrusives; (i) Crossnore-Lansing type (Crossnore and Lansing granites) and (ii) Striped Rock type (Striped Rock, Beech, and Stewartsville(?) granites). Crossnore-Lansing type granites are characterized by small volumes (as inferred from areal distribution, ~lkm²), high Sr initial ratio, sodic amphibole, and multiple zircon populations. Striped Rock type granites are characterized by relatively large volumes (>65km²), intermediate Sr initial ratio, a single zircon population, and hornblende, where amphibole is present. Recent radiometric age determinations support a temporal relationship between Striped Rock type granites. The age of formation for the Striped Rock granite, determined here, strongly supports the emerging model that late Precambrian magmatism associated with extensional tectonism occurred in at least two pulses. The earlier pulse of magmatism was dominated by felsic intrusives and lasted for 60 My between 760 Ma and 700 Ma. The Second pulse of magmatism was dominated by basaltic magmatism and occurred approximately at 570 Ma. This later magmatic event was probably related to the opening of the Iapetus ocean. / Master of Science

Research has shown that more people are migrating to rural areas from urban ones. Rural areas are now composed of a variety of residents from different social and economic backgrounds. Because of this variety of residents, potential for social conflicts exists. One area of possible conflict is the difference in attitudes regarding land use and objectives for the rural landscape. Some planners and sociologists believe a better understanding of the impact of urban migration on the rural landscape is needed. The future character of the rural landscape is uncertain. This research will concentrate on the potential conflicts in attitudes toward the rural landscape among the different groups of residents who now live there. From the possible research questions raised in this area of study, the following hypothesis is suggested: Rural natives and nonnatives have a shared interest in preserving the character of the rural landscape.in which they reside. Testing this hypothesis should provide the land use planner and the landscape architect with a framework with which to evaluate plans and decisions for rural areas. The study area for this research will be Grayson County, Virginia. / M. Arch.

The purpose of this study was two-fold: first, to determine the reliability of the reconnaissance method of land classification as indicated by various farm management, home economic, and other economic factors; second, to determine the economic conditions existing on each class of land, attempting to measure the relative importance of the major factors affecting farm financial successful on land of different classes. / Master of Science

The economic disaster known as the Great Depression struck Grayson County, Texas, in 1929, and full economic recovery did not come until the close of World War II. However, the people of Grayson benefited greatly between 1933 and 1946 from the myriad spending programs of the New Deal, the building of the Denison Dam that created Lake Texoma, and the establishment of Perrin Army Air Field. Utilizing statistical data from the United States Census and the Texas Almanac, this thesis analyzes the role of government spending‐federal, state, and local‐in the economic recovery in Grayson County.

The purpose of the study was to document and examine the experiences and perspectives of students and staff who were affected by the closure of Mount Rogers Combined School in 2010. Mount Rogers Combined School was established in Grayson County, Virginia, by the concerted efforts of volunteers and community members who valued education and considered schooling a top priority for the area. The original four-room school was built of rocks and housed grades 1 through 11, taught by four teachers, one of whom also served as the principal (Grayson County School Board [GCSB], 1993). In 1990, it was the smallest school in the Commonwealth of Virginia (United States Department of Agriculture, 1990). A review of early education in Virginia and early education in Grayson County is documented to place the study in historical context. A brief history of Grayson County is also included in this paper. The qualitative case study documents the experiences and perspectives of the students and staff who went through the school's closure. Both primary and secondary sources were used to complete the study including interviews of students and staff who worked at or attended the school, reviews of official records and documents found in archives, examination of personal manuscripts, inspection of artifacts, and study of general histories. School divisions close and consolidate schools to improve instructional programs for students, offset student enrollment declines, provide adequate facilities for learning, and for economic savings. Communication, developing relationships, transportation, extracurricular activities and course offerings are variables that should be considered when planning a school closure. While transportation and changes in relationships are particular challenges, the overall benefits for former staff members include better access to more resources and professional development opportunities. Former students tend to adapt better than staff members when schools close due to more course offerings and access to a broader range of extracurricular activities. The findings are aligned with the literature that was reviewed for the study. / Ed. D.

This study arose from a desire to view the factors involved in Grayson County's High Schools' ability to retain youth after their 16th birthday, the compulsory attendance age. Also from a desire to view these factors in terms of rank of importance. In the process of securing data from which inferences could be drawn concerning this question the Freshman Class of 1956 was taken as the original membership group of the study. Information was obtained from members of the original membership who dropped out of school after their 16th birthday. Information was also secured from those individuals of the original membership who remained in school, since it was felt that information from both groups might be data of significance. A questionnaire submitted to all 1960 seniors of the original 1956 membership provided data used in determining factors in completion. A questionnaire was also submitted to all terminators of the original 1956 membership and provided data used in determining factors in termination. The data from questionnaires from completors and terminators were tabled, tabulated and ranked according to frequency. Those factors having the greater frequencies were considered most important in a descending scale of importance. As a final phase of the study, general statements are made concerning apparent need for improvement in the Grayson County School system. Recommendations are made applying not only to Grayson County Schools but to any school system with the problem of termination. / M.S.

This is a study to determine to what extent the Tom Bean Public School of Grayson County, Texas, is a community school.

Thesis (M. Div.)--Emmanuel School of Religion, Johnson City, Tennessee, 1995. / Vita. Includes bibliographical references (leaves 111-113).

M.S.