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 1949 with total page 1084 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 1967 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of Investigations written by and published by . This book was released on 1971 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cretaceous Rudists and Carbonate Platforms written by Robert William Scott and published by SEPM Soc for Sed Geology. This book was released on 2007 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of North American Geology written by and published by . This book was released on 1967 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.

Download or read book Comanchean Lower Cretaceous Stratigraphy and Paleontology of Texas written by Society of Economic Paleontologists and Mineralogists. Permian Basin Section and published by . This book was released on 1967 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Southwestern Historical Quarterly written by and published by . This book was released on 1978 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petroleum Abstracts written by and published by . This book was released on 1968 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by Corpus Christi Geological Society and published by . This book was released on 2009 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CRWR written by and published by . This book was released on 1970 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States written by and published by . This book was released on 1968 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Master s Theses and Doctoral Dissertations in the Pure and Applied Sciences written by and published by . This book was released on 1966 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Gulf Coast Geology written by and published by . This book was released on 1970 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Springs of Texas written by Gunnar M. Brune and published by Texas A&M University Press. This book was released on 2002 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text explores the natural history of Texas and more than 2900 springs in 183 Texas counties. It also includes an in-depth discussion of the general characteristics of springs - their physical and prehistoric settings, their historical significance, and their associated flora and fauna.

Download or read book Bulletin of the South Texas Geological Society written by and published by . This book was released on 2010 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Climatological Data for the United States by Sections written by and published by . This book was released on 1972 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of the monthly climatological reports of the United States by state or region, with monthly and annual national summaries.