Download or read book Selected Ultramafic and Related Rocks of the Southern Appalachian Orogen written by and published by . This book was released on 2001 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultramafic Rocks of the Appalachian Piedmont written by Steven K. Mittwede and published by Geological Society of America. This book was released on 1989 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mafic and Ultramafic Rocks of the Appalachian Orogen written by Harry Y. McSween and published by . This book was released on 1984 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mafic and Ultramafic Rocks of the Appalachian Orogen written by Harry Y. McSween and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 The Taconide Zone and the Taconic Orogeny in the Western Part of the Northern Appalachian Orogen written by E-an Zen and published by Geological Society of America. This book was released on 1972 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tectonostratigraphy Geochemistry and Geochronology of the Dadeville Complex of Alabama and Georgia written by Benjamin Lee Davis and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taconic orogenesis along the eastern Laurentian margin was a dynamic tectonic event during the Ordovician that has been difficult to reconcile until as of late. The record of the Taconic orogeny is complex, and each section of the Appalachians has different geologic attributes that are unique to that specific section. In the northern and central Appalachians, the record of Taconic orogenesis is well preserved and understood, but in the southern Appalachians there are discrepancies in subduction style that suggest a different manor of tectonic evolution occurred. The probable model for the southern Appalachians suggests a B-type subduction system, where the Dadeville complex represents a marginal volcanic arc, due to a subduction polarity reversal north of the Virginia promontory, relative to the northern Appalachians during the Taconic orogeny, causing Laurentian continental lithosphere to override subducting Iapetan oceanic lithosphere. This model depicts the fringing Dadeville complex arc and associated Wedowee-Emuckfaw-Dahlonega back-arc basin originating on distended Laurentian crust, fueled by extensional rather than convergent tectonics.The Dadeville complex is a large klippe located in the Alabama and Georgia Inner Piedmont of the southern Appalachian orogen lying immediately above rocks of the eastern Blue Ridge, Brevard Zone, and Opelika Group in the core of the Tallassee/Newnan-Tucker synform. The Dadeville complex consists of an array of metaigneous, metaplutonic, and metasedimentary rocks including the Ropes Creek Amphibolite, a bimodal metabasalt/metatuff, metadacite at the base, overlain by the Agricola Schist, a metaturbidite consisting of metapelite, metagreywacke, and minor metabasalt. The Chattasofka Creek Gneiss (granite) is intrusive into the Agricola Schist, Ropes Creek Amphibolite, and a mafic-ultramafic suite. The Camp Hill Gneiss (tonalite) is intrusive into the Ropes Creek Amphibolite. Also intrusive into the Agricola Schist is a mafic-ultramafic suite consisting of the Doss Mountain and Slaughters Gabbro units. There are a multitude of mafic-ultramafic suites and felsic plutonic rocks in the Dadeville complex that span from Camp Hill, Alabama to southeast Atlanta, Georgia that have been identified over the course of this research. Distinctive major and trace element geochemical signatures of the felsic intrusives, Ropes Creek Amphibolite, and various mafic-ultramafic suites all suggest formation within a volcanic arc environment. U/Pb dating of detrital zircons in the Agricola Schist, and equivalent metasedimentary rocks, as well as igneous zircons in the Chattasofka Creek Gneiss, Camp Hill Gneiss, and Ropes Creek Amphibolite yield Middle Ordovician ages, with the Agricola Schist also containing a subordinate fraction of Grenville and Granite-Rhyolite Province ages. Additionally, the Camp Hill Gneiss, Chattasofka Creek Gneiss, and Doss Mountain and Slaughters Gabbro suites all exhibit negative initial epsilon Nd (ENdi) values indicative of a continental origin. These relationships suggest that the Dadeville Complex volcanic arc, and the associated Wedowee-Emuckfaw-Dahlonega back-arc basin, resulted from a B-type suprasubduction system where Iapetan oceanic lithosphere subducted beneath a distended Laurentian continental plate, and that there could be other Taconic arc fragments in the southern Appalachians, akin to or apart of the Dadeville complex, that have yet to be identified.

Download or read book Ophiolites in Earth History written by Yildirim Dilek and published by Geological Society of London. This book was released on 2003 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 32 papers in this volume examine the mode and nature of igneous, metamorphic, tectonic, sedimentological, and biological processes associated with the evolution of oceanic crust in different tectonic settings in Earth history as revealed in various ophiolites and ophiolite belts around the world, and the geodynamic significance of these ophiolites in the evolution of different orogenic systems. Divided into six thematic sections, the book presents a wealth of new data and syntheses from mainly Phanerozoic ophiolites around the world.

Download or read book Geology of the Appalachian Caledonian Orogen in Canada and Greenland written by Harold Williams and published by Geological Society of America. This book was released on 1995 with total page 951 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the Canadian Appalachian region. The chapter on the East Greenland Caledonides stands alone and there is no attempt to integrate the geological accounts of the two far removed regions. Rocks of the Canadian Appalachian region are described under four broad temporal divisions: lower Paleozoic and older, middle Paleozoic, upper Paleozoic, and Mesozoic. The rocks of these temporal divisions define geographic zones, belts, basins, and graben, respectively. The area is of special interest because so many modern concepts of mountain building are based on Appalachian rocks & structures.

Download or read book M langes and Olistostromes of the U S Appalachians written by J. Wright Horton and published by Geological Society of America. This book was released on 1989-01-01 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Southeastern Geology written by and published by . This book was released on 2010 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1984 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Central and Southern Appalachian Sutures written by Lynn Glover and published by Geological Society of America. This book was released on 1997-01-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cambrian System Restricted of the Southern Appalachians written by Charles Elmer Resser and published by Geological Society of America. This book was released on 1938 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Birth of the Mountains written by Sandra H. B. Clark and published by . This book was released on 2001 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Regional Trends in the Geology of the Appalachian Caledonian Hercynian Mauritanide Orogen written by P.E. Schenk and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: The classical Appalachian, Caledonian, Hercynian, and Mauritanide orogens are now only segments of a once-continuous Paleozoic mountain belt which has been fragmented during Mesozoic-Cenozoic formation of the North Atlantic Ocean. These segments are major parts of the countries surrounding the North Atlantic - most of which are members of NATO. The aim of this NATO conference was to evaluate these fragments in terms of their pre-Mesozoic positions, and to attempt a synthesis of their geologic evolution on an international and orogen-wide scale. Geologists who have studied these scattered remnants have been separated by both geography and discipline. Orogen-wide syntheses have beeen attempted in the past by individuals who are specialists not only in discipline but also in geography; therefore, these attempts have not been satisfactory to everyone. This conference brought together the foremost specialists in different disciplines from each country. They attempted to teach other specialists, not only in their own fields, but in other disciplines, about regional variations and particular problems. The resulting international cross-fertilization, both within and between speciaLties, enriched individual workers and helped to provide a multi-disciplinary overview of the orogen.

Download or read book The Appalachian Geology of John M Dennison written by Katharine Lee Avary and published by Geological Society of America. This book was released on 2020-09-11 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Dr. John M. Dennison spent his career studying the Appalachians, teaching and mentoring his students and professional colleagues, publishing papers, leading field trips, and presenting ideas at regional, national and international conferences. This volume is a collection of papers contributed by former students and colleagues to honor his memory. Learn about stratigraphy and paleontology ranging in age from Ordovician to Mississippian in Kentucky, New York, Tennessee, Virginia, and West Virginia; Devonian airfall tephras throughout the eastern United States; a Devonian lonestone; a Middle Eocene bentonite in North Carolina and its relationship to a volcanic swarm in western Virginia; and a 3D model of a ductile duplex in northwestern Georgia. The stratigraphic and geologic diversity of the papers reflect Dennison's many interests and relationships with a large group of geoscientists"--