early evolution of the North American Cordillera Baltican and
... and Siberia in mid-Palaeozoic time, termed here the Northwest Passage. Westward propagation of a narrow subduction zone coupled with a global change in plate motion, related to the collision of Gondwana with Laurentia– Baltica, are proposed to have led to initiation of subduction along the western p ...
... and Siberia in mid-Palaeozoic time, termed here the Northwest Passage. Westward propagation of a narrow subduction zone coupled with a global change in plate motion, related to the collision of Gondwana with Laurentia– Baltica, are proposed to have led to initiation of subduction along the western p ...
The track of the Yellowstone hot spot
... the north and east by high terrain of the Rocky Mountains. (3) The Yellowstone mantle plume rose into crust thickened during the Mesozoic and earliest Tertiary orogenies (Sevier and Laramide) (Christiansen and Lipman, 1972; Wernicke and others, 1987; Molnar and Chen, 1983). (4) About 2 Ma, the Yello ...
... the north and east by high terrain of the Rocky Mountains. (3) The Yellowstone mantle plume rose into crust thickened during the Mesozoic and earliest Tertiary orogenies (Sevier and Laramide) (Christiansen and Lipman, 1972; Wernicke and others, 1987; Molnar and Chen, 1983). (4) About 2 Ma, the Yello ...
OVERVIEW Tectonics of the Himalaya and southern Tibet from two
... zoic time. The last pre-Himalayan accretion event was the collision of an island-arc complex, now represented by the Kohistan-Ladakh terrane, along the Shyok suture zone in Late Cretaceous time (Treloar et al., 1989b; Rolfo et al., 1997). The Kohistan region (Fig. 2), west of the Nanga Parbat syntax ...
... zoic time. The last pre-Himalayan accretion event was the collision of an island-arc complex, now represented by the Kohistan-Ladakh terrane, along the Shyok suture zone in Late Cretaceous time (Treloar et al., 1989b; Rolfo et al., 1997). The Kohistan region (Fig. 2), west of the Nanga Parbat syntax ...
An integrated geophysical analysis of the upper crust of the southern
... Previous interpretations of seismic data collected by the Kenya Rift International Seismic Project (KRISP) experiments indicate the presence of crustal thickening within the rift valley area beneath the Kenya dome, an uplift centred on the southern part of the Kenya rift. North of the dome, these in ...
... Previous interpretations of seismic data collected by the Kenya Rift International Seismic Project (KRISP) experiments indicate the presence of crustal thickening within the rift valley area beneath the Kenya dome, an uplift centred on the southern part of the Kenya rift. North of the dome, these in ...
res terrae - Oulun yliopisto
... was likely located near the Laurentia supercontinent and moved to its present location along a sinistral strike-slip fault. The sedimentological and geochemical studies in this study indicate that the evolution of the basin rifting, in the Telemark, can be subdivided into (i) syn-rift, (ii) late-syn ...
... was likely located near the Laurentia supercontinent and moved to its present location along a sinistral strike-slip fault. The sedimentological and geochemical studies in this study indicate that the evolution of the basin rifting, in the Telemark, can be subdivided into (i) syn-rift, (ii) late-syn ...
program details
... extensive amount of information on the geologic, tectonic, seismic and climatic history of the region. Besides, discoveries of natural resources raised interest for new research and investments in the Eastern Mediterranean. The 8th ISEMG received about 240 abstracts from 27 countries with a very wid ...
... extensive amount of information on the geologic, tectonic, seismic and climatic history of the region. Besides, discoveries of natural resources raised interest for new research and investments in the Eastern Mediterranean. The 8th ISEMG received about 240 abstracts from 27 countries with a very wid ...
Article
... erosion and redeposition over deep geologic time (Table 1; Figs 1 and 2). An integration of bedrock geology, crustal-scale seismology, and detrital zircon U-Pb geochronology identifies two overarching reservoirs of detrital zircon in the form of Proterozoic sedimentary rocks with 2.0– 1.8 Ga and 1.5 ...
... erosion and redeposition over deep geologic time (Table 1; Figs 1 and 2). An integration of bedrock geology, crustal-scale seismology, and detrital zircon U-Pb geochronology identifies two overarching reservoirs of detrital zircon in the form of Proterozoic sedimentary rocks with 2.0– 1.8 Ga and 1.5 ...
1.8 Billion Years of Detrital Zircon Recycling Calibrates a
... erosion and redeposition over deep geologic time (Table 1; Figs 1 and 2). An integration of bedrock geology, crustal-scale seismology, and detrital zircon U-Pb geochronology identifies two overarching reservoirs of detrital zircon in the form of Proterozoic sedimentary rocks with 2.0– 1.8 Ga and 1.5 ...
... erosion and redeposition over deep geologic time (Table 1; Figs 1 and 2). An integration of bedrock geology, crustal-scale seismology, and detrital zircon U-Pb geochronology identifies two overarching reservoirs of detrital zircon in the form of Proterozoic sedimentary rocks with 2.0– 1.8 Ga and 1.5 ...
A review of geological origins and relationships in the Ballantrae
... within-plate or Hawaiian-type) or a mid-ocean ridge (producing basalts known by the acronym MORB). A series of analytical studies has established that the Ballantrae Complex lavas are polygenetic (e.g. Thirlwall & Bluck 1984; Smellie & Stone 2001) with all three of the main environment types represe ...
... within-plate or Hawaiian-type) or a mid-ocean ridge (producing basalts known by the acronym MORB). A series of analytical studies has established that the Ballantrae Complex lavas are polygenetic (e.g. Thirlwall & Bluck 1984; Smellie & Stone 2001) with all three of the main environment types represe ...
The Ingalls ophiolite complex, central Cascades, Washington
... the Ingalls ophiolite complex supported this back-arc basin setting, but other mafic rocks had geochemical affinities of withinplate tectonic settings. In this paper, we present new geological and geochemical data documenting a polygenetic origin for the ophiolite, and we demonstrate that the comple ...
... the Ingalls ophiolite complex supported this back-arc basin setting, but other mafic rocks had geochemical affinities of withinplate tectonic settings. In this paper, we present new geological and geochemical data documenting a polygenetic origin for the ophiolite, and we demonstrate that the comple ...
Baltica upside down: A new plate tectonic model for Rodinia and the
... between western Baltica (Scandinavia) and East Greenland, there are remarkable correlations between East Greenland and Russian Baltica (southern peri-Urals). Late Mesoproterozoic to earliest Neoproterozoic metasedimentary rocks are intruded by early Neoproterozoic granites ranging in age from ca. 1 ...
... between western Baltica (Scandinavia) and East Greenland, there are remarkable correlations between East Greenland and Russian Baltica (southern peri-Urals). Late Mesoproterozoic to earliest Neoproterozoic metasedimentary rocks are intruded by early Neoproterozoic granites ranging in age from ca. 1 ...
Short-time Dynamics of Frictional Strength in Dry Friction
... passage through X. Four distinct phases of the dynamics are seen [17]; detachment (Phase I), rapid slip (Phase II), slow slip (Phase III) and eventual rehealing after slip arrest (Phase IV). We will focus on the short-time dynamics, as described in Phases I-III. The details of the final, rehealing ( ...
... passage through X. Four distinct phases of the dynamics are seen [17]; detachment (Phase I), rapid slip (Phase II), slow slip (Phase III) and eventual rehealing after slip arrest (Phase IV). We will focus on the short-time dynamics, as described in Phases I-III. The details of the final, rehealing ( ...
Snoke and Barnes, 2006
... The Klamath Mountains province of northwestern California and southwestern Oregon is a classic example of a mountain belt that developed by the tectonic accretion of rock assemblages of oceanic affinity during progressive crustal growth along an active continental margin. Consequently, the Klamath M ...
... The Klamath Mountains province of northwestern California and southwestern Oregon is a classic example of a mountain belt that developed by the tectonic accretion of rock assemblages of oceanic affinity during progressive crustal growth along an active continental margin. Consequently, the Klamath M ...
Petrogenesis of Mafic to Felsic Plutonic Rock Associations: the Calc
... And–Kfs–Ms-bearing metapelites during deformation and intrusion (Aparicio, 1975, 1977). The Massif has been partly truncated in the south by post-intrusion movements along the Mérens fault during Cenozoic tectonism (McCaig & Miller, 1986; Soula et al., 1986). Previous work has shown that the Massif ...
... And–Kfs–Ms-bearing metapelites during deformation and intrusion (Aparicio, 1975, 1977). The Massif has been partly truncated in the south by post-intrusion movements along the Mérens fault during Cenozoic tectonism (McCaig & Miller, 1986; Soula et al., 1986). Previous work has shown that the Massif ...
CHAPTER 8 STRUCTURE
... To lesser or greater extent, all the Precambrian rocks exposed in western Saudi Arabia are deformed. Even the youngest Precambrian rocks – posttectonic A-type granites, dikes, and Ediacaran volcanic and sedimentary successions –are affected by faulting, are emplaced in extensional fractures, or are ...
... To lesser or greater extent, all the Precambrian rocks exposed in western Saudi Arabia are deformed. Even the youngest Precambrian rocks – posttectonic A-type granites, dikes, and Ediacaran volcanic and sedimentary successions –are affected by faulting, are emplaced in extensional fractures, or are ...
Chromite - NSW Resources and Energy
... South Africa accounts for 46% of world production. Only minor production of chromite, from small podiform deposits, has occurred in Australia. All known deposits in New South Wales are relatively small podiform deposits associated with serpentinites or other ultramafic rocks (Photograph 3) (Figure 6 ...
... South Africa accounts for 46% of world production. Only minor production of chromite, from small podiform deposits, has occurred in Australia. All known deposits in New South Wales are relatively small podiform deposits associated with serpentinites or other ultramafic rocks (Photograph 3) (Figure 6 ...
A FIRST GEOLOGICAL MAP OF MAKIRA, SOLOMON ISLANDS
... termed the Wairahiti Volcanic Group or WVG) with interbedded sedimentary limestones, cherts, sandstones, and basaltic breccias (herein termed the Waihaoru Sedimentary Group or WSG). The Wairahito Volcanic Group comprises a sequence of basalt, dolerite and gabbro sheets and dykes with local ultramafi ...
... termed the Wairahiti Volcanic Group or WVG) with interbedded sedimentary limestones, cherts, sandstones, and basaltic breccias (herein termed the Waihaoru Sedimentary Group or WSG). The Wairahito Volcanic Group comprises a sequence of basalt, dolerite and gabbro sheets and dykes with local ultramafi ...
lithosphere 2006 - Helsingin yliopisto
... T. Siren and I.T. Kukkonen. Three-dimensional visualization of FIRE seismic reflection sections (computer demo) P. Sorjonen-Ward, A. Ord, Y. Zhang, P. Alt-Epping, T. Cudahy, A. Kontinen and U. Kuronen. Numerical simulations of geological processes relating to the Outokumpu mineral system T. Torvela. ...
... T. Siren and I.T. Kukkonen. Three-dimensional visualization of FIRE seismic reflection sections (computer demo) P. Sorjonen-Ward, A. Ord, Y. Zhang, P. Alt-Epping, T. Cudahy, A. Kontinen and U. Kuronen. Numerical simulations of geological processes relating to the Outokumpu mineral system T. Torvela. ...
Superposed Fault Systems of the Southernmost
... technical problems. I am especially grateful to three FSU Geology alumni: Chris HolmDenoma, who shared an office with me and spurred much of my thinking on the Taconic orogeny; Mark Groszos, my colleague at Valdosta State University who shared his knowledge of the southern Appalachians during our da ...
... technical problems. I am especially grateful to three FSU Geology alumni: Chris HolmDenoma, who shared an office with me and spurred much of my thinking on the Taconic orogeny; Mark Groszos, my colleague at Valdosta State University who shared his knowledge of the southern Appalachians during our da ...
Late Proterozoic – Paleozoic Tectonostratigraphic Development and
... sillimanite and manifestations of partial melting, indicating upper amphibolite conditions, were observed only locally, mainly in the easternmost part of the BVT. C.1.b. Vendian Flysch and Cambrian Molasse The crystalline basement of the Brunovistulicum is locally covered by a Vendian flysch (see Fi ...
... sillimanite and manifestations of partial melting, indicating upper amphibolite conditions, were observed only locally, mainly in the easternmost part of the BVT. C.1.b. Vendian Flysch and Cambrian Molasse The crystalline basement of the Brunovistulicum is locally covered by a Vendian flysch (see Fi ...
Radiometric dating results 5
... suite, the Granite-pegmatite association, and the Granitesyenitoid-gabbroid association are also present. The area is transected by several branches of the Karesuando-Arjeplog deformation zone but in domains between these branches the rocks may show only minor signs of deformation, such as at the sa ...
... suite, the Granite-pegmatite association, and the Granitesyenitoid-gabbroid association are also present. The area is transected by several branches of the Karesuando-Arjeplog deformation zone but in domains between these branches the rocks may show only minor signs of deformation, such as at the sa ...
Structure and geological evolution of the bedrock of
... but also including the coastal archipelago and part of the Bothnian Sea. Near the centre ofthe area lies the island of Olkiluoto, on which Finland's site for a deep repository for spent nuclear fuel is located. The purpose of the present report is to compile and interpret all available geological an ...
... but also including the coastal archipelago and part of the Bothnian Sea. Near the centre ofthe area lies the island of Olkiluoto, on which Finland's site for a deep repository for spent nuclear fuel is located. The purpose of the present report is to compile and interpret all available geological an ...
Carbonate Facies and Sedimentation of the Klapanunggal
... the facies types and sedimentation models of carbonate rocks in Cibinong and its surrounding area. This study is expected the facies model of Tertiary carbonates, by examining the characteristics and biota contents within the carbonate rocks. Research Methods The research method consists of field ob ...
... the facies types and sedimentation models of carbonate rocks in Cibinong and its surrounding area. This study is expected the facies model of Tertiary carbonates, by examining the characteristics and biota contents within the carbonate rocks. Research Methods The research method consists of field ob ...
Equatorial Segment of the Mid-Atlantic Ridge: initial results of the
... in the East (i.e. from the eastern margin of the Sierra Leone Rise) to 36°W, and a separate sections up to the submarine continental margin of NE Brazil. The research included multibeam echosounding, continuous single channel seismic profiling, magnetic survey, core sampling and dredging. Geophysica ...
... in the East (i.e. from the eastern margin of the Sierra Leone Rise) to 36°W, and a separate sections up to the submarine continental margin of NE Brazil. The research included multibeam echosounding, continuous single channel seismic profiling, magnetic survey, core sampling and dredging. Geophysica ...
Geology of East-Central Idaho
... Figure 5. Map of Challis volcanic field, Idaho, showing the distributions of volcanic rocks (coarse dots) and selected large plutons (diagonal rule). The tuff of Challis Creek in the Twin Peaks caldera (TPC) is shown with fine dots and exposures of the tuff outside the caldera are large solid dots. ...
... Figure 5. Map of Challis volcanic field, Idaho, showing the distributions of volcanic rocks (coarse dots) and selected large plutons (diagonal rule). The tuff of Challis Creek in the Twin Peaks caldera (TPC) is shown with fine dots and exposures of the tuff outside the caldera are large solid dots. ...
TaskForceMajella
The TaskForceMajella (TFM) is an industry funded geoscientific research project conducted between the years 1998 and 2005. The project involved numerous universities distributed worldwide, and was sponsored by a number of international major oil companies. The area of research was the Majella Mountain in Central Italy, regarded as an analogue of a faulted and fractured hydrocarbon reservoir as can be found in major provinces like the Middle East, Caspian Basin, Mediterranean Basin, and other areas. The scope was to obtain knowledge on the relation between fracture and fault generation, and all types of geological aspects of the evolution of the geological structure.