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Author: Ulf Linnemann Publisher: ISBN: 9783510652594 Category : Computers Languages : en Pages : 98
Book Description
The Saxo-Thuringian Zone is pivotal for understanding the Variscan evolution of Central Europe, as this part of Gondwana was one of the first to collide with Laurussia. The Saxo-Thuringian Zone comprises domains that have experienced variable degrees of Variscan metamorphism ranging from medium grade to UHT/UHP in some domains, while other parts were largely unaffected by deformation or metamorphism. These differences in overprint reflect pre-Variscan crustal heterogeneity and thickness variation, where thinner segments were wedged into the subduction zone and rigid, thicker blocks escaped subduction. The heterogeneity of crustal thickness is considered to be caused by Ordovician rifting (470–480 Ma) of the Cadomian crust (570–540 Ma) at the Gondwana margin. Today, magmatic and sedimentary rocks deposited on the thin crust of these rifts form the metamorphic complexes of the Saxon Granulite Massif and the Erzgebirge Mtns. Variable response of crust of different thickness to Variscan deformation and metamorphism is not particular to the Saxo-Thuringian Zone, but rather a typical feature of the crust all over Variscan Europe. The 18 chapters of this book are review and synthesis papers and present overviews of the Cadomian evolution, the post-Cadomian development of the passive margin, a state of the art assessment of the biostratigraphic record of Saxo-Thuringian sediments, various aspects (metamorphism, structure, magmatism) of the Variscan reworking of the Saxo-Thuringian Zone and processes related to the erosion of the Variscan Orogen. Extensive references include also older, generally difficult to find literature references, PhD theses and original descriptions published in very local journals. This book makes use of, and in part provides, previously unavailable maps and borehole data, largely acquired in GDR time in the course of exploration for uranium, fossil fuels, and ore minerals. The geological sheet map of the Pre-Permian geology of Eastern Germany, based on this material and compiled by SDAG Wismut (now WISMUT GmbH), is included and made available for the first time to a wider audience. Numerous figures and additional materials are provided on the enclosed DVD.
Author: Ulf Linnemann Publisher: ISBN: 9783510652594 Category : Computers Languages : en Pages : 98
Book Description
The Saxo-Thuringian Zone is pivotal for understanding the Variscan evolution of Central Europe, as this part of Gondwana was one of the first to collide with Laurussia. The Saxo-Thuringian Zone comprises domains that have experienced variable degrees of Variscan metamorphism ranging from medium grade to UHT/UHP in some domains, while other parts were largely unaffected by deformation or metamorphism. These differences in overprint reflect pre-Variscan crustal heterogeneity and thickness variation, where thinner segments were wedged into the subduction zone and rigid, thicker blocks escaped subduction. The heterogeneity of crustal thickness is considered to be caused by Ordovician rifting (470–480 Ma) of the Cadomian crust (570–540 Ma) at the Gondwana margin. Today, magmatic and sedimentary rocks deposited on the thin crust of these rifts form the metamorphic complexes of the Saxon Granulite Massif and the Erzgebirge Mtns. Variable response of crust of different thickness to Variscan deformation and metamorphism is not particular to the Saxo-Thuringian Zone, but rather a typical feature of the crust all over Variscan Europe. The 18 chapters of this book are review and synthesis papers and present overviews of the Cadomian evolution, the post-Cadomian development of the passive margin, a state of the art assessment of the biostratigraphic record of Saxo-Thuringian sediments, various aspects (metamorphism, structure, magmatism) of the Variscan reworking of the Saxo-Thuringian Zone and processes related to the erosion of the Variscan Orogen. Extensive references include also older, generally difficult to find literature references, PhD theses and original descriptions published in very local journals. This book makes use of, and in part provides, previously unavailable maps and borehole data, largely acquired in GDR time in the course of exploration for uranium, fossil fuels, and ore minerals. The geological sheet map of the Pre-Permian geology of Eastern Germany, based on this material and compiled by SDAG Wismut (now WISMUT GmbH), is included and made available for the first time to a wider audience. Numerous figures and additional materials are provided on the enclosed DVD.
Author: Ulf Linnemann Publisher: ISBN: 9783510652594 Category : Geology Languages : en Pages : 485
Book Description
The Saxo-Thuringian Zone is pivotal for understanding the Variscan evolution of Central Europe, as this part of Gondwana was one of the first to collide with Laurussia. The Saxo-Thuringian Zone comprises domains that have experienced variable degrees of Variscan metamorphism ranging from medium grade to UHT/UHP in some domains, while other parts were largely unaffected by deformation or metamorphism. These differences in overprint reflect pre-Variscan crustal heterogeneity and thickness variation, where thinner segments were wedged into the subduction zone and rigid, thicker blocks escaped subduction. The heterogeneity of crustal thickness is considered to be caused by Ordovician rifting (470480 Ma) of the Cadomian crust (570540 Ma) at the Gondwana margin. Today, magmatic and sedimentary rocks deposited on the thin crust of these rifts form the metamorphic complexes of the Saxon Granulite Massif and the Erzgebirge Mtns. Variable response of crust of different thickness to Variscan deformation and metamorphism is not particular to the Saxo-Thuringian Zone, but rather a typical feature of the crust all over Variscan Europe. The 18 chapters of this book are review and synthesis papers and present overviews of the Cadomian evolution, the post-Cadomian development of the passive margin, a state of the art assessment of the biostratigraphic record of Saxo-Thuringian sediments, various aspects (metamorphism, structure, magmatism) of the Variscan reworking of the Saxo-Thuringian Zone and processes related to the erosion of the Variscan Orogen. Extensive references include also older, generally difficult to find literature references, PhD theses and original descriptions published in very local journals. This book makes use of, and in part provides, previously unavailable maps and borehole data, largely acquired in GDR time in the course of exploration for uranium, fossil fuels, and ore minerals. The geological sheet map of the Pre-Permian geology of Eastern Germany, based on this material and compiled by SDAG Wismut (now WISMUT GmbH), is included and made available for the first time to a wider audience. Numerous figures and additional materials are provided on the enclosed DVD.
Author: J. Chantraine Publisher: Springer Science & Business Media ISBN: 3642849156 Category : Science Languages : en Pages : 745
Book Description
This book provides an up-to-date synthesis of the Pre-Mesozoic Geology in France (Armorican and Central Massifs) and Related Areas (Aquitaine Basin, Vosges, Provence, Pyrenees, Western Alps, Corsica and Sardinia). The geological record is systematically presented, covering seismic reflection, gravity and magnetic data, stratigraphy, paleontology, structure, metamorphism, igneous activity and metallogeny. It is the most up-to-date English summary by French scientists, providing access to the vast literature on the topic mainly written in French. As such, it should be of great interest to an international audience.
Author: K. Schulmann Publisher: Geological Society of London ISBN: 1862396582 Category : Science Languages : en Pages : 404
Book Description
This volume summarizes the state of the art of Variscan geology from Iberia to the Bohemian Massif. The European Variscan belt consists of two orogens: the older, northern and the younger, southern. The northern Variscan realm was dominated by Late Devonian–Carboniferous rifting, subduction and collisional events as defined by sedimentary records, crustal growth, recycling of continental crust and large-scale deformations. In contrast, the southern European crust was reworked by major Late Carboniferous collision followed by Permian wrenching. The Late Carboniferous–Permian orogeny overprinted the previously accreted system in the north, but with much lower intensity, resulting in magmatic recycling and extensional tectonics. These two main orogenic cycles do not reflect episodic evolution of a single orogenic system but a complete change in orientation of stress field, thermal regime, degree of reworking and recycling of European crust, reflecting a major switch in plate configurations at the Early–Late Carboniferous boundary.
Author: R.D. Nance Publisher: Geological Society of London ISBN: 1786205998 Category : Science Languages : en Pages : 814
Book Description
This volume is a tribute to the career of J. Brendan Murphy and features papers by over 100 authors from countries all over the world: a testament to the high-profile and far-reaching influence of Brendan’s work. The topics covered fall into three broad categories that encompass Brendan’s main fields of influence: (1) supercontinents and the supercontinent cycle, including reconstructions and modelling; (2) orogenesis and terranes, with a focus on the Appalachian–Variscan and Central Asian orogenic belts and the oceans with which they are associated; and (2) magmatism and magmatic processes, centring on the geochemistry and isotopic compositions of magmas in arc and rift setting. Like Brendan’s own research, the scope of the papers spans the globe and ranges from strongly field-based studies to conceptual analyses. All of the articles, however, are focused on unravelling some critical aspect of geology or aimed at clarifying some crucial geological process. Hence, they also share a theme common to Brendan’s many contributions in emphasizing the importance of process-oriented research.
Author: D.A.T. Harper Publisher: Geological Society of London Special Publications ISBN: 1786205882 Category : Science Languages : en Pages : 514
Book Description
The Ordovician was one of the longest of the geological periods, characterized by major magmatic and tectonic activity, an immense biodiversification, swings in climate and sea levels and the first Phanerozoic mass extinction. ‘A Global Synthesis of the Ordovician System’ is presented in two volumes in The Geological Society, Special Publications. This first volume (SP532) charts the history of the Ordovician System and explores significant advances in our understanding of its biostratigraphy, including more precise calibration of its timescale with tephra chronology and regional alignments using astrochronology and cyclostratigraphy. Changes in the world’s oceans, their shifting currents and sea levels, the biogeography of their biotas and the ambient climate are described and discussed against a background of changing palaeogeography. This first volume also includes syntheses of the Ordovician geology for most European countries, including historical key areas, such as Great Britain, Baltoscandia and Bohemia. The second volume (SP533) provides synthetic aspects of the Ordovician geology of most other parts of the world.
Author: Martin Meschede Publisher: Springer ISBN: 3319761021 Category : Science Languages : en Pages : 330
Book Description
This richly illustrated book presents Germany’s geological evolution in the context of the Earth’s dynamic history. It starts with an introduction to Geology and explains the plate tectonic development, as well as the formation of both ancient and recent mountain belts – namely the Caledonian, Variscan and the modern-day Alps – that formed this part of Europe. A dedicated chapter discusses the origin of earthquakes in Germany, the occurrence of young volcanic rocks and the various episodes of rock deformation and metamorphism at these complex crossroads of plate tectonic history. The book highlights Germany’s diverse geological history, ranging from the origin of the Earth, the formation of deep crystalline rocks, and their overlying sedimentary sequences, to its more recent “ice age” quaternary cover. The last chapter addresses the shaping of the modern landscape. Though the content is also accessible for non-geologists, it is primarily intended for geoscience students and an academic audience.
Author: Cecilio Quesada Publisher: Springer Nature ISBN: 3030105199 Category : Science Languages : en Pages : 560
Book Description
Taking a new global approach, this unique book provides an updated review of the geology of Iberia and its continental margins from a geodynamic perspective. Owing to its location close to successive plate margins, Iberia has played a pivotal role in the geodynamic evolution of the Gondwanan, Rheic, Pangea, Tethys s.l. and Eurasian plates over the last 600 Ma of Earth's history. The geological record starts with the amalgamation of Gondwana in the Neoproterozoic succeeded by the rifting and spreading of the Rheic ocean; its demise, which led to the amalgamation of Pangea in the late Paleozoic; the rifting and spreading of several arms of the Neotethys ocean in the Mesozoic Era and their ongoing closure, which was responsible for the Alpine orogeny. The significant advances in the last 20 years have attracted international research interest in the geology of the Iberian Peninsula. This volume presents the most comprehensive, careful and updated description of the variscan cycle in Iberia. This volume focuses in the different geological events since the Cambrian-Early Ordovician rift until the late variscan orocline formations including magmatic and metamorphic evolution.
Author: Yvette D. Kuiper Publisher: Geological Society of America ISBN: 0813725542 Category : Science Languages : en Pages :
Book Description
"This volume provides a comprehensive overview of our understanding of the evolution of the Appalachian-Caledonian-Variscan orogen. It takes the reader along a clockwise path around the North Atlantic Ocean from the U.S. and Canadian Appalachians; to the Caledonides of Spitsbergen, Scandinavia, Scotland and Ireland; and thence south to the Variscides of Morocco"--
Author: Ulf Linnemann
Author: Ulf Linnemann
Author: Ulf Linnemann
Author: J. Chantraine
Author: K. Schulmann
Author: R.D. Nance
Author: D.A.T. Harper
Author: Martin Meschede
Author: Cecilio Quesada
Author: Yvette D. Kuiper
Author: Spencer G. Lucas