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 Geological Survey Bulletin written by and published by . This book was released on 1972 with total page 1492 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 Fossil Footprints of Western North America written by Martin G. Lockley and published by New Mexico Museum of Natural History and Science. This book was released on 2014-11-01 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geologic History and Hydrogeologic Setting of the Edwards Trinity Aquifer System West central Texas written by René A. Barker and published by . This book was released on 1994 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microfacies Analysis of Limestones written by E. Flügel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 667 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Evolution and Estimated Flow Velocity of Water in the Trinity Aquifer South central Texas written by Sonya A. Jones and published by . This book was released on 1997 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water resources Investigations Report written by and published by . This book was released on 1997 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts of North American Geology written by Geological Survey (U.S.) and published by . This book was released on 1966 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The American Association of Petroleum Geologists Bulletin written by American Association of Petroleum Geologists and published by . This book was released on 1972 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the Southwestern Association of Petroleum Geologists written by American Association of Petroleum Geologists and published by . This book was released on 1972-07 with total page 1704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Statistics for Geoscientists written by D. Marsal and published by Elsevier. This book was released on 2014-06-28 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents nearly all the important elementary and analytical methods of statistics, designed for the needs of the geoscientist and completely free from higher mathematics. Translated from the second German edition.

Download or read book Bulletin of Canadian Petroleum Geology written by and published by . This book was released on 1965 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aspects of the Geology of Tertiary Limestones in West central Jamaica West Indies written by Raymond M. Wright and published by . This book was released on 1975 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geoscience Abstracts written by and published by . This book was released on 1965 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Scheme for Multivariate Analysis in Carbonate Petrology with an Example from the Silurian Tonoloway Limestone written by Richard Smosna and published by . This book was released on 1979 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Sedimentary Petrology written by and published by . This book was released on 1979 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: