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... The Apuseni-Banat-Timok-Srednogorie (ABTS) magmatic arc in southeastern Europe formed as a result of NE-dipping subduction of the Neotethys ocean beneath the European continental margin during the Late Cretaceous. This magmatic arc is associated with some of Europe’s largest porphyry Cu-Au and epith ...
... The Apuseni-Banat-Timok-Srednogorie (ABTS) magmatic arc in southeastern Europe formed as a result of NE-dipping subduction of the Neotethys ocean beneath the European continental margin during the Late Cretaceous. This magmatic arc is associated with some of Europe’s largest porphyry Cu-Au and epith ...
early evolution of the North American Cordillera Baltican and
... Baltican and Caledonian affinities into eastern Panthalassa, the late Palaeozoic World Ocean (Scotese 2002), and at the same time provides a mechanism for the mid-Palaeozoic initiation of subduction along the western passive margin of Laurentia. Our model calls for the development of a Caribbean- or ...
... Baltican and Caledonian affinities into eastern Panthalassa, the late Palaeozoic World Ocean (Scotese 2002), and at the same time provides a mechanism for the mid-Palaeozoic initiation of subduction along the western passive margin of Laurentia. Our model calls for the development of a Caribbean- or ...
Makhtesh Ramon Geological Window, hyper
... the MR area and less soils. The area is mostly free of clouds throughout the year, and several weather stations that collect information on a diurnal basis have been dispersed throughout the area. The MR area is known as one of the most important mineralogical sites in Israel and has been called a “ ...
... the MR area and less soils. The area is mostly free of clouds throughout the year, and several weather stations that collect information on a diurnal basis have been dispersed throughout the area. The MR area is known as one of the most important mineralogical sites in Israel and has been called a “ ...
Summary of Northeast Asia geodynamics and tectonics*
... of thrusting along the margin of a continent or an island arc. May include large fault-bounded fragments with a coherent . stratigraphy Many subduction-zone terranes contain fragments of oceanic crust and associated rocks that exhibit a complex structural history, occur in a major thrust zone, and p ...
... of thrusting along the margin of a continent or an island arc. May include large fault-bounded fragments with a coherent . stratigraphy Many subduction-zone terranes contain fragments of oceanic crust and associated rocks that exhibit a complex structural history, occur in a major thrust zone, and p ...
EVOLUTION OF THE NORTH AMERICAN CORDILLERA William R
... North of the trans-Idaho discontinuity (Yates 1968), where the elongate trend of the miogeocline is offset by >250 km (Figure 5), basaltic rocks associated with glaciomarine diamictite in basal horizons of the miogeoclinal succession have been dated isotopically at 770–735 Ma (Armstrong et al. 1982, ...
... North of the trans-Idaho discontinuity (Yates 1968), where the elongate trend of the miogeocline is offset by >250 km (Figure 5), basaltic rocks associated with glaciomarine diamictite in basal horizons of the miogeoclinal succession have been dated isotopically at 770–735 Ma (Armstrong et al. 1982, ...
evolution of the north american cordillera
... North of the trans-Idaho discontinuity (Yates 1968), where the elongate trend of the miogeocline is offset by >250 km (Figure 5), basaltic rocks associated with glaciomarine diamictite in basal horizons of the miogeoclinal succession have been dated isotopically at 770–735 Ma (Armstrong et al. 1982, ...
... North of the trans-Idaho discontinuity (Yates 1968), where the elongate trend of the miogeocline is offset by >250 km (Figure 5), basaltic rocks associated with glaciomarine diamictite in basal horizons of the miogeoclinal succession have been dated isotopically at 770–735 Ma (Armstrong et al. 1982, ...
Jurassic igneous-related metallogeny of southwestern North America
... across multiple crust types including transitional, cratonal and reactivated cratonal Proterozoic crust in Arizona, eastern California and the central Great Basin, and juvenile Paleozoic or Mesozoic crust in northwestern Nevada and western and northern California. Magmatism evolved in a broadly exte ...
... across multiple crust types including transitional, cratonal and reactivated cratonal Proterozoic crust in Arizona, eastern California and the central Great Basin, and juvenile Paleozoic or Mesozoic crust in northwestern Nevada and western and northern California. Magmatism evolved in a broadly exte ...
Title K-feldspar sand-grain provenance in the Triassic
... some of the mixing or ‘averaging’ issues associated with analysis of bulk samples. However, although these techniques enable the likely sourcelands to be determined, the transport history experienced by individual framework components remains unconstrained. Robust minerals such as zircon can be recy ...
... some of the mixing or ‘averaging’ issues associated with analysis of bulk samples. However, although these techniques enable the likely sourcelands to be determined, the transport history experienced by individual framework components remains unconstrained. Robust minerals such as zircon can be recy ...
Post-Paleozoic activity
... above Early Mesozoic sea level (Hay and others, 1981). The southern and central Appalachians, which had undergone Late Paleozoic transpression, probably stood higher than the northern Appalachians, which had undergone transtension (Gates, oral communication, 1978). Accordingly, Carboniferous basins ...
... above Early Mesozoic sea level (Hay and others, 1981). The southern and central Appalachians, which had undergone Late Paleozoic transpression, probably stood higher than the northern Appalachians, which had undergone transtension (Gates, oral communication, 1978). Accordingly, Carboniferous basins ...
Baltica upside down: A new plate tectonic model for Rodinia and the
... Figure 2. Continental distribution on Southern Hemisphere during late Vendian to Cambrian. Rift geometry (seafloor spreading marked by double lines) in peri-Gondwana region generally follows Murphy et al. (1999). A: 550 Ma reconstruction based on paleomagnetic data for Baltica, Laurentia, Gondwana, ...
... Figure 2. Continental distribution on Southern Hemisphere during late Vendian to Cambrian. Rift geometry (seafloor spreading marked by double lines) in peri-Gondwana region generally follows Murphy et al. (1999). A: 550 Ma reconstruction based on paleomagnetic data for Baltica, Laurentia, Gondwana, ...
Geology and Landforms Factsheet - the Dartmoor National Park
... geology. Most of Dartmoor consists of a single type of rock - granite. This granite was intruded during the late Carboniferous/ early Permian Period (around 280 million years ago) into the area we now know as Devon and Cornwall. From the Isles of Scilly to Dartmoor, a number of granite domes are lin ...
... geology. Most of Dartmoor consists of a single type of rock - granite. This granite was intruded during the late Carboniferous/ early Permian Period (around 280 million years ago) into the area we now know as Devon and Cornwall. From the Isles of Scilly to Dartmoor, a number of granite domes are lin ...
The Cretaceous and Cenozoic tectonic evolution of
... Previous work There have been numerous plate reconstructions of the region, from the very early works of Ben-Avraham and Uyeda (1973) reconstructing the South China Sea and east Asian margin, to the paleomagnetic data and interpretations provided by Haile et al. (1977), who were the first to propose ...
... Previous work There have been numerous plate reconstructions of the region, from the very early works of Ben-Avraham and Uyeda (1973) reconstructing the South China Sea and east Asian margin, to the paleomagnetic data and interpretations provided by Haile et al. (1977), who were the first to propose ...
Evolution of the Paleo-Asian Ocean (Altai−Sayan Region, Central
... been integrated after Dobretsov et al. (1995). Fragments detached from Gondwanaland in Early Paleozoic have been postulated not only in Central Asia but also in the Middle East (Cocks, 2001 and the references). However, the breakup processes of Gondwana as well as those of Rodinia are still hypothet ...
... been integrated after Dobretsov et al. (1995). Fragments detached from Gondwanaland in Early Paleozoic have been postulated not only in Central Asia but also in the Middle East (Cocks, 2001 and the references). However, the breakup processes of Gondwana as well as those of Rodinia are still hypothet ...
1.8 Billion Years of Detrital Zircon Recycling Calibrates a
... geometry [1], which the Devonian and Triassic sample sets show in Fig 4. The recycled Devonian sample set is dominated by Precambrian ages with good correlation to the “Cordilleran supersource I”, with lesser fractions derived from Paleozoic arcs. Detrital zircons from the exotic Devonian sample set ...
... geometry [1], which the Devonian and Triassic sample sets show in Fig 4. The recycled Devonian sample set is dominated by Precambrian ages with good correlation to the “Cordilleran supersource I”, with lesser fractions derived from Paleozoic arcs. Detrital zircons from the exotic Devonian sample set ...
Article
... geometry [1], which the Devonian and Triassic sample sets show in Fig 4. The recycled Devonian sample set is dominated by Precambrian ages with good correlation to the “Cordilleran supersource I”, with lesser fractions derived from Paleozoic arcs. Detrital zircons from the exotic Devonian sample set ...
... geometry [1], which the Devonian and Triassic sample sets show in Fig 4. The recycled Devonian sample set is dominated by Precambrian ages with good correlation to the “Cordilleran supersource I”, with lesser fractions derived from Paleozoic arcs. Detrital zircons from the exotic Devonian sample set ...
Anomalous Occurrence of Cretaceous Placer Deposits: A
... Palaeogeographic studies e.g., [1, 2, 3] show that before the Jurassic period, all the continents of the Earth were sutured together into one supergiant continent, Pangea. The disintegration of this supergiant continent started in the early Jurassic and subsequently resulted in two giant continents: ...
... Palaeogeographic studies e.g., [1, 2, 3] show that before the Jurassic period, all the continents of the Earth were sutured together into one supergiant continent, Pangea. The disintegration of this supergiant continent started in the early Jurassic and subsequently resulted in two giant continents: ...
Late Proterozoic – Paleozoic Tectonostratigraphic Development and
... et al. 1997). The supposed Panafrican provenance of some crustal elements thus requires careful scrutiny before an interpretation of their affinity. The present paper builds on the work of the authors in Moravia where the best data on the Cadomian basement and DevonianCarboniferous sediments and pa ...
... et al. 1997). The supposed Panafrican provenance of some crustal elements thus requires careful scrutiny before an interpretation of their affinity. The present paper builds on the work of the authors in Moravia where the best data on the Cadomian basement and DevonianCarboniferous sediments and pa ...
Accreted oceanic terranes in Ecuador: Southern edge of the
... The San Juan terrane is the easternmost oceanic unit (eastern part of the Pallatanga terrane of McCourt et al. 1998; Kerr et al. 2002), which crops out along a narrow belt in the western part of the InterAndean valley, and at the eastern border of the Western Cordillera. It yielded a Sm/Nd isochron ...
... The San Juan terrane is the easternmost oceanic unit (eastern part of the Pallatanga terrane of McCourt et al. 1998; Kerr et al. 2002), which crops out along a narrow belt in the western part of the InterAndean valley, and at the eastern border of the Western Cordillera. It yielded a Sm/Nd isochron ...
3D restoration of a Cretaceous rift basin in Kilen, eastern North
... The semi-nunatak Kilen is a key area to understand the setting of the Cretaceous sedimentary basin in eastern North Greenland. The basin geometry has been obscured by later N–S compression and inversion of presumable Palaeocene–Eocene age. A 3D restoration of the Cretaceous basin is presented based ...
... The semi-nunatak Kilen is a key area to understand the setting of the Cretaceous sedimentary basin in eastern North Greenland. The basin geometry has been obscured by later N–S compression and inversion of presumable Palaeocene–Eocene age. A 3D restoration of the Cretaceous basin is presented based ...
An International Journal of CHAPTER 1 The Island of Elba: tectonic
... Middle Cretaceous, much before the ophiolites were accreted to the Apulian continental crust. According to Coehn et al. ( 1981) the overthrusting of the meta ophiolitic nappes over the Corsican margin happened during the Middle Cretaceous. This particular event can still be considered as part of the ...
... Middle Cretaceous, much before the ophiolites were accreted to the Apulian continental crust. According to Coehn et al. ( 1981) the overthrusting of the meta ophiolitic nappes over the Corsican margin happened during the Middle Cretaceous. This particular event can still be considered as part of the ...
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... between LIP volcanic deposits and stratigraphic sequences preserving evidence of the extinction. In most cases, uncertainties on radioisotopic dates used to correlate between geographically separated study areas exceed the duration of both the extinction interval and LIP volcanism by an order of mag ...
... between LIP volcanic deposits and stratigraphic sequences preserving evidence of the extinction. In most cases, uncertainties on radioisotopic dates used to correlate between geographically separated study areas exceed the duration of both the extinction interval and LIP volcanism by an order of mag ...
tethyan evolution of turkey: a plate tectonic approach
... Palaeo-Tethyan and a Neo-Tethyan, although they partly overlap in time. The PalaeoTethyan evolution was governed by the main south-dipping (present geographic orientation) subduction zone of Palaeo-Tethys beneath northern Turkey during the PermoLiassic interval. During the Permian the entire present ...
... Palaeo-Tethyan and a Neo-Tethyan, although they partly overlap in time. The PalaeoTethyan evolution was governed by the main south-dipping (present geographic orientation) subduction zone of Palaeo-Tethys beneath northern Turkey during the PermoLiassic interval. During the Permian the entire present ...
Free State PTR_Final - South African Heritage Resources Agency
... The geological history of South Africa spans a total of at least 3.6 billion years and includes some of the major tectonic events that shaped the Earth since the very early formation of this unique Planet. Several leading scientists have devoted their professional careers to the study of the geologi ...
... The geological history of South Africa spans a total of at least 3.6 billion years and includes some of the major tectonic events that shaped the Earth since the very early formation of this unique Planet. Several leading scientists have devoted their professional careers to the study of the geologi ...
chapter9_Proterozoic..
... of granite-gneiss terrains and greenstone belts that were shaped into cratons, Although these same rock associations continued to form during the Proterozoic, they did so at a considerably reduced rate. The change in style of crustal evolution, the Proterozoic was also an important time in the evo ...
... of granite-gneiss terrains and greenstone belts that were shaped into cratons, Although these same rock associations continued to form during the Proterozoic, they did so at a considerably reduced rate. The change in style of crustal evolution, the Proterozoic was also an important time in the evo ...