Download or read book Late Tertiary Tectonic Uplift in the Southern and Central Appalachians written by Mary Sheela Biswal and published by . This book was released on 2015 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exposed Appalachian Mountains extend about 2500 km from Newfoundland to Alabama with the highest peaks >2000 m above sea level. The last orogeny that affected Appalachian crust was the 325-260 Ma Alleghanian. Even with minimal erosion rates, it is highly unlikely that the Appalachians could have sustained such elevations for over 200 m.y., suggesting that recent tectonic uplift has produced today's mountainous topography. The multiple phases of Tertiary uplift are related to poorly understood processes, but a large amount of data from today's mountain chain and the adjacent Coastal Plain indicate the present high topography is anomalous and clearly not related to Paleozoic crustal processes. Uplift signatures suggest that current topography and visible geomorphology are a product of the late Tertiary uplift. Antecedent rivers flowing westward across very high topography in the Blue Ridge, westward-migrating drainage divide and anomalous drainage patterns are common in the southeastern Appalachians. A marked shift in high topography occurs northward from the Blue Ridge in Tennessee-North Carolina to the Valley and Ridge in Virginia-West Virginia. Evidence suggests a possible late Tertiary tectonic uplift in the southern and central Appalachians, although more data and evidence are needed to understand the uplift. The main research problem of this project is to identify and analyze uplift signatures as recorded in lower Gulf Coastal Plain sediments and fluvial terraces along Douglas Lake, French Broad River. Detrital zircon geochronology of Miocene-Pliocene lower Gulf Coastal Plain sediments shows important age peaks at 1.0 Ga, 600 Ma, 480 Ma, 440 Ma and 300 Ma. Collective zircon data suggest a possible predominance of Appalachian provenance. This indicates occurrence of tectonic uplift in the source region during the Miocene-Pliocene, producing exceptionally high sediment influx in the Coastal Plain during that time. Fluvial terrace mapping along Douglas Lake, Tennessee has been done with the help of vintage topographic maps and classic geologic mapping involving foot traverses. A provisional geologic terrace map at 1:24,000 scale has been produced as part of this study. Terrace mapping has helped identify five distinct terraces, resolve their relative chronology and understand the evolution of terraces along the river.
Download or read book From Rodinia to Pangea written by Richard P. Tollo and published by Geological Society of America. This book was released on 2010 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Appalachians constitute one of Earth's major tectonic features and have served as a springboard for innovative geologic thought for more than 170 years. This volume contains 36 original papers reporting the results of research performed throughout nearly the entire length and breadth of the Appalachian region, including all major provinces and geographical areas. Memoir 206 was designed to commemorate the (near-)fortieth anniversary of the publication of the classic Studies of Appalachian Geology volumes that appeared just prior to the application of plate tectonic concepts to the region. Contributions concerning structural evolution, sedimentation, stratigraphy, magmatic processes, metamorphism, tectonics, and terrane accretion illustrate the wide range of ongoing research in the area and collectively serve to mark the considerable progress in scientific thought that has occurred during the past four decades."--pub. desc.
Download or read book The Appalachian Ouachita Orogen in the United States written by Robert D. Hatcher, Jr. and published by Geological Society of America. This book was released on 1989 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tectonics of the southern Appalachians written by Symposium on Tectonics of the Southern Appalachians, Roanoke, 1963 and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Appalachian Geology Central and Southern written by George Wescott Fisher and published by Wiley-Interscience. This book was released on 1970 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Appalachian Tectonics written by Thomas H. Clark and published by University of Toronto Press. This book was released on 1967-12-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain ranges are the most conspicuous elements of the earth's architecture, and the manner in which the architectural units are arranged or disarranged has become the study of a subdivision of geology known as Tectonics. A hundred years ago James Hall attempted the first scientific synthesis of the steps in the building of the eastern North American mountains, the Appalachians. His initial hypothesis of 1857, expanded and broadened by J.D. Dana during the decade which followed, laid the foundation for our modern geosynclinal theory of mountain building. During the last century of modifications and refinements were contributed concerning the roles played by crustal compression, sub-crustal convection currents, batholiths, metamorphism, gravity sliding, and isostasy. In recent years detailed mapping, supplemented by studies of turbidity currents, paleomagentism, stable isotopes, and radio-activity have helped to unravel the history of mountain building, but today there are as many questions unanswered as there are those for which there are tentative solutions. Aspects of Appalachian orogeny was a suitable subject for the symposium of the Royal Society of Canada Annual Meeting in 1966 at Sherbrooke, Quebec—a city within the Appalachian Mountain System. This book assembles the papers of this symposium, dealing with gravity sliding, studies of sedimentation and structure in limited areas, comparisons with the Appalachians of the United States, the bearing of gravity measurements upon our understanding of mountain structure, earthquakes, and a broad, general view of the tectonic pattern of the earth of which this mountain-built belt is but a small part. Such a comprehensive volume, bringing together a variety of points of view of some of the foremost scholars in the field, indicates the vastness of the subject, the significant progress made thus far, the necessity for new and progressive methods of exploration, and above all the interdependence of all the workers in the field, no matter how seemingly unrelated their specialities are.
Download or read book Lateral Ramps in the Folded Appalachians and in Overthrust Belts Worldwide written by Howard A. Pohn and published by . This book was released on 2000 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Appalachian Basin Symposium written by Geological Survey (U.S.) and published by . This book was released on 1989 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: See journals under US Geological survey. Circular 1028.
Download or read book Geology at Every Scale written by Annette Summers Engel and published by Geological Society of America. This book was released on 2018-03-30 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The chapters in this guidebook are organized according to major geologic themes, starting first with field trips in the Knoxville area that highlight, in some way, local carbonates, and then by ending with field trips focused on regional tectonics that include travel to North and South Carolina and Georgia"--
Download or read book Geometries and mechanisms of thrusting with special reference to the Appalachians written by Gautam Mitra and published by Geological Society of America. This book was released on 1988 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomorphology of the Central Appalachians written by Arthur Bevan and published by . This book was released on 1932 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sedimentary Tectonics of the Appalachian Basin written by John M. Dennison and published by . This book was released on 1985 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mid Atlantic Piedmont written by David W. Valentino and published by Geological Society of America. This book was released on 1999-01-01 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Not until recently has the mid-Atlantic Piedmont region of the Appalachians been viewed from plate tectonic theory. Eight papers derived from 1995 and 1997 symposia of the Northeastern section of the Geological Society of America help fill in this gap. With chapters arranged by geographic location f
Download or read book Geomorphology of the Central Appalachians Classic Reprint written by Douglas Johnson and published by Forgotten Books. This book was released on 2018-09-22 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Geomorphology of the Central Appalachians The number, origin, age, and correlation of peneplains Within the area traversed present a problem concerning Which there is still much difference of opinion. Although a larger number of erosion levels may be represented, the evolution and topography of the Appalachian region will be described With reference to the five most prominent peneplains and to altitudes above and below them. These peneplains, named in the order Of their age, are the pre-triassic, the Fall Zone (jura-cretaceous), the Schooley (tertiary), the Harrisburg (probably late Tertiary), and the Somerville (possibly Pleistocene). The authors hope that this guidebook Will be regarded, not as a statement of facts to be accepted Without question, but merely as a guide to field dis eussions of problems encountered on the journey. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Tectonics of the Southern Appalachians written by Geological Society of America. Southeastern Section and published by . This book was released on 1964 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tectonic Studies in the Talladega and Carolina Slate Belts Southern Appalachian Orogen written by Denny N. Bearce and published by Geological Society of America. This book was released on 1982 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Cross Section Through Part of the Southern Appalachian Orogen written by Steven A. Goldberg and published by American Geophysical Union. This book was released on 1991-01-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Field Trip Guidebooks Series, Volume 365. This field trip is intended to demonstrate the major lithologic sequences and the main tectonic and metamorphic features in a segment of the Blue Ridge geologic province in northwestern North Carolina and adjacent parts of Tennessee and Virginia. Many of the field locations chosen for the six-day field trip emphasize geological characteristics common to much of the southern and central Appalachians. Most of the localities to be visited are in the Blue Ridge, with some in the Valley and Ridge province to the northwest and the Brevard zone and Inner Piedmont to the southeast. The trip provides an overview of the anatomy and evolution of terranes subjected to the following tectonic episodes: Late Proterozoic rifting, the development of oceanic lithosphere, the subsequent closure of this ocean, and further modification by multiple episodes of Paleozoic deformation and metamorphism.
