Download or read book Stratigraphy and Depositional Environments of the Glen Rose Formation North central Texas written by Keith W. Davis and published by . This book was released on 1974 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphy and environments of deposition of the marginal Glen Rose limestone Glen Rose formation lower Cretaceous north central Texas written by James C. Brothers and published by . This book was released on 1976 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Stratigraphy and Depositional Environment of the Lower Permian Moran Formation North central Texas written by Nancy Lee Kotila and published by . This book was released on 1978 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Depositional Environments in the Middle Part of the Glen Rose Limestone Lower Cretaceous Blanco and Hays Counties Texas written by Arthur Wordsworth Cleaves and published by . This book was released on 1971 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 70-foot interval from the middle part of the Glen Rose Limestone (Lower Cretaceous) has been sampled at 35 localities in central Texas for the purpose of reconstructing vertical and lateral changes of depositional environment on the San Marcos Platform. A marker unit, the Corbula Interval, crops out in the center of the stratigraphic section. The middle Glen Rose was deposited as a mosaic of shoal-water lithotopes in a broad lagoon behind the Gulf Coast Reef Trend. Over part of the Platform the sea was sufficiently shallow to permit the development of local offlap sequences. As a result, intertidal and supratidal units comprise a significant proportion of many local facies successions. In Blanco and Hays counties there are two distinct patterns of vertical facies succession. Closer to the Llano Uplift (Blanco County) 3 to 5 offlap cycles are seen in the 70-foot interval. These involve a gradational trend from subtidal through supratidal facies. Each cycle is bracketed by sharply-defined bedding planes. The cycles are regressional and result from the progradation of carbonate mud flats into a shelf sea. Further to the east and more distant from the Llano Uplift (Hays County) the facies tract lacks the imbricated succession of regressive cycles. Subtidal units comprise the bulk of the section. The difference in the vertical facies pattern for the two areas may result from their relationship to the ancient shoreline. Because the Llano Uplift was emergent during deposition of the middle Glen Rose, the outcrops closest to the Uplift contain abundant evidence of tidal flat sedimentation. Mud mounds and small islands adjacent to land may have served as nuclei for the development of local offlap sequences. To the southeast (Hays County) the shelf sea may have been slightly deeper and probably lacked the nuclei necessary to initiate these sequences. One complete cycle, the Corbula Cycle, crops out in both areas and may record a brief period of emergence for most of the San Marcos Platform
Download or read book The Stratigraphy and Depositional Environment of the Pueblo Formation Lower Permian North Central Texas written by Mary Louise Van Der Loop-Avary and published by . This book was released on 1983 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphy of the Thorp Springs member Glen Rose Formation Lower Cretaceous North Central Texas written by Bobby H. Bammel and published by . This book was released on 1975 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphic Framework and Depositional Environments of the Lower Graham Formation Pennsylvanian of North central Texas written by Paul Baltensperger and published by . This book was released on 1985 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Stratigraphy of the Glen Rose Formation Type Area Central Texas written by Robert William Rodgers and published by . This book was released on 1965 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dinosaur Tracks and Traces written by David D. Gillette and published by Cambridge University Press. This book was released on 1989 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book ever to be devoted to this subject.
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by TPRC at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemina tion phases of the activity was transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we have concluded that it will be in the interest of all concerned if the printing and distribution of the volume were handled by a well-known publishing house to assure improved service and better communication. Hence, effective with this Volume 18, Masters Theses in the Pure and Applied Sciences will be disseminated on a worldwide basis by Plenum Publishing Corporation of New York. All back issues can also be ordered from Plenum. As we embark on this new partnership with Plenum, we also initiate a new venture in that this important annual reference work now covers Canadian universities as well as those in the United States. We are sure that this broader base will greatly enhance the value of these volumes.
Download or read book Soil Survey written by and published by . This book was released on 1985 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Baylor Geological Studies written by and published by . This book was released on 1988 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Baylor Geological Studies written by and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Survey of Coryell County Texas written by Nathan L. McCaleb and published by . This book was released on 1985 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Stratigraphy and Paleoenvironmental Reconstruction of a Dinosaur Track bearing Interval of the Glen Rose Formation at Government Canyon State Natural Area Bexar County Texas written by Joseph B. Johnson and published by . This book was released on 2016 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the Cretaceous, unique tectonic and climatic conditions favored the creation of the shallow Western Interior Seaway that divided the North American continent into two distinct landmasses. This vast shallow-marine environment promoted the deposition of thick series of platform carbonates, which constitute an excellent record of ecological crises resulting from the high sensitivity of carbonate producers to environmental changes. The Glen Rose Formation is a thick shallow-marine carbonate succession deposited during the Albian (Early Cretaceous) period over South Central and North Central Texas as a part of a large, extensive Central Texas carbonate platform represented by the Trinity, Fredericksburg, and Washita sequences. The Glen Rose Formation is particularly well known for containing abundant dinosaur tracks and trackways that can be observed in outcrop at numerous sites throughout South Central and North Central Texas, such as Canyon Lake Gorge (Comal County). Recently, well-preserved tracks and trackways (theropod and sauropod) have been described at Government Canyon State Natural Area, northwestern Bexar County near San Antonio, TX. This is a significant discovery as it is the first Glen Rose track site to be identified within Bexar County. It is the aim of this study to determine the position of this dinosaur track-bearing section within the overall stratigraphy of the Glen Rose Formation and to assess the paleoenvironmental and paleoclimatic conditions that prevailed in this location during the time of deposition. Based on the evolution of carbon isotopes within the section and the outcrop gamma-ray profile, the section is correlated to the lowermost portion of the upper Glen Rose Member, constraining the age of the section to 109.8-109.5 Ma. Bulk-rock geochemical data suggest that these dinosaurs were living under very warm and humid conditions characteristic of intertropical regions. The integration of data permits the development of a sequence stratigraphic framework for the section: a third-order sequence boundary separates the section into a late highstand systems tract and an early transgressive systems tract. Dinosaur tracks and trackways are preserved at the tops of parasequences belonging to this late highstand systems tract.
Download or read book Stratigraphy and Depositional Environment of the Lower Permian Putnam Formation and Lost Creek and Hords Creek Beds of the Admiral Formation in North central Texas written by Geoffrey K. Shelley and published by . This book was released on 1984 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
