constraints, geotectonic setting and basin development Saxo
... 1996; Murphy et al. 2004). Studies of U/Pb-ages from detrital zircon grains have suggested that the Saxo-Thuringian Zone, the Tepla-Barrandian Unit and the Moldanubian Zone of the Bohemian Massif show a West African provenance (Linnemann et al. 2000, 2004; Gehmlich 2003; Tichomirowa 2003; Drost et a ...
... 1996; Murphy et al. 2004). Studies of U/Pb-ages from detrital zircon grains have suggested that the Saxo-Thuringian Zone, the Tepla-Barrandian Unit and the Moldanubian Zone of the Bohemian Massif show a West African provenance (Linnemann et al. 2000, 2004; Gehmlich 2003; Tichomirowa 2003; Drost et a ...
Fluorine and Chlorine in Granitoids from the Basin and Range
... Analysis of fluorine and chlorine in 228 samples of granitoids' from the Basin and Range province of the western United States suggests that at least three types of granitoids can be distinguished: (1) fluorine-poor granitoids of the northwestern Great Basin (mean F = 0.041 wt %, maximum = 0.11 wt % ...
... Analysis of fluorine and chlorine in 228 samples of granitoids' from the Basin and Range province of the western United States suggests that at least three types of granitoids can be distinguished: (1) fluorine-poor granitoids of the northwestern Great Basin (mean F = 0.041 wt %, maximum = 0.11 wt % ...
Introduction to the Silurian
... time. By correlating events such as sea-level changes, climatic variations and crustal deformation against the standard geological timescale, stratigraphical methods can reconstruct a moving picture of Earth history in time and place. The time in this volume is the Silurian Period, from about 440 to ...
... time. By correlating events such as sea-level changes, climatic variations and crustal deformation against the standard geological timescale, stratigraphical methods can reconstruct a moving picture of Earth history in time and place. The time in this volume is the Silurian Period, from about 440 to ...
The Cretaceous and Cenozoic tectonic evolution of
... preserved oceanic crust of the latest Jurassic seafloor spreading episode is contained in the obducted basement of the central ophiolite belt on New Guinea (Fig. 1b), likely preserved in an embayment along New Guinea (Hill and Hall, 2003). The lack of preserved seafloor spreading histories results i ...
... preserved oceanic crust of the latest Jurassic seafloor spreading episode is contained in the obducted basement of the central ophiolite belt on New Guinea (Fig. 1b), likely preserved in an embayment along New Guinea (Hill and Hall, 2003). The lack of preserved seafloor spreading histories results i ...
Sedimentary record of the tectonic growth of a collisional continental
... sandstone. The overall stratigraphy of the Nutzotin Mountains sequence represents a general upward-shallowing and upward-coarsening package that represents a general transition from distal mud-rich submarine-fan strata to more proximal sand-rich submarine-fan strata that are in turn overlain by mari ...
... sandstone. The overall stratigraphy of the Nutzotin Mountains sequence represents a general upward-shallowing and upward-coarsening package that represents a general transition from distal mud-rich submarine-fan strata to more proximal sand-rich submarine-fan strata that are in turn overlain by mari ...
download a .pdf of this paper: 2.7 MB; with cover, supplementary information and associated information
... direction, and tilt known as Milankovitch cycles result in corresponding variations in the amount and distribution of sunlight reaching Earth. The resulting forcing on climate and/or ocean circulation can influence the characteristics of sediments deposited within a basin, which may ultimately be pr ...
... direction, and tilt known as Milankovitch cycles result in corresponding variations in the amount and distribution of sunlight reaching Earth. The resulting forcing on climate and/or ocean circulation can influence the characteristics of sediments deposited within a basin, which may ultimately be pr ...
Depositional History and Tectonic Regimes within and in
... Finland were covered by the sea, and in the Middle Ordovician, the sea reached as far as central Finland. No Late Palaeozoic (Silurian to Permian) sedimentary rocks have been recognized. The apatite fission track studies indicate, however, that extensive Silurian to Devonian deposits most likely cov ...
... Finland were covered by the sea, and in the Middle Ordovician, the sea reached as far as central Finland. No Late Palaeozoic (Silurian to Permian) sedimentary rocks have been recognized. The apatite fission track studies indicate, however, that extensive Silurian to Devonian deposits most likely cov ...
Low-Temperature Geothermal System in Sedimentary Basin and
... energy contained in the fluids of rocks that is filled in the fractures and pore spaces within the upper crust. The heat is generated from several sources. Normally, the heat or temperature created by decay of naturally radioactive elements which increases with depth (Figure 1).The geothermal energy ...
... energy contained in the fluids of rocks that is filled in the fractures and pore spaces within the upper crust. The heat is generated from several sources. Normally, the heat or temperature created by decay of naturally radioactive elements which increases with depth (Figure 1).The geothermal energy ...
program details
... The home of earliest civilizations on Earth, the Eastern Mediterranean is among the most interesting regions in Earth Sciences. Earliest discoveries related to the Earth’s geology, such as the use of ore deposits or fossil fuels took place in the Eastern Mediterranean. Besides, intense seismic and v ...
... The home of earliest civilizations on Earth, the Eastern Mediterranean is among the most interesting regions in Earth Sciences. Earliest discoveries related to the Earth’s geology, such as the use of ore deposits or fossil fuels took place in the Eastern Mediterranean. Besides, intense seismic and v ...
geologic map (scale 1 :250000) of the penokean orogen, central
... basin in east-central Minnesota, as mapped by Morey and others (1981), was based for the most part on pre-platetectonic concepts reminiscent of Beloussov (1962), wherein vertical tectonism was interpreted to have produced synclines and anticlines in a pattern of superimposed interference folds. In t ...
... basin in east-central Minnesota, as mapped by Morey and others (1981), was based for the most part on pre-platetectonic concepts reminiscent of Beloussov (1962), wherein vertical tectonism was interpreted to have produced synclines and anticlines in a pattern of superimposed interference folds. In t ...
Unit 1 The Ocean Basins
... According to fossil and rock records, oceans have existed on Earth for at least 3.8 billion years. It is easy to think that they are permanent features, ancient and unchanging. However, the only thing that is truly constant about ocean basins — and continents — is that they are always moving and cha ...
... According to fossil and rock records, oceans have existed on Earth for at least 3.8 billion years. It is easy to think that they are permanent features, ancient and unchanging. However, the only thing that is truly constant about ocean basins — and continents — is that they are always moving and cha ...
Geological Society of America Bulletin
... Keywords: Neogene, back-arc basin opening, volcanism, SW Japan, subduction reinitiation. INTRODUCTION The formation of a subduction zone is a singular event in the tectonic history of any region. Once formed, subduction zones tend to persist for many millions of years. Scientists agree that once sub ...
... Keywords: Neogene, back-arc basin opening, volcanism, SW Japan, subduction reinitiation. INTRODUCTION The formation of a subduction zone is a singular event in the tectonic history of any region. Once formed, subduction zones tend to persist for many millions of years. Scientists agree that once sub ...
CPC-2014 - TU Freiberg
... Although nearly all marine stage boundaries of the Carboniferous and Permian are ratified or close to ratification, nearly nothing is known about the correlation of the system and stage boundaries into the vast continental deposits on the CP Earth. However, the Late Carboniferous and Permian was a t ...
... Although nearly all marine stage boundaries of the Carboniferous and Permian are ratified or close to ratification, nearly nothing is known about the correlation of the system and stage boundaries into the vast continental deposits on the CP Earth. However, the Late Carboniferous and Permian was a t ...
Development of the Miocene Manantiales foreland basin , Principal
... Based on study of the ages and nature of Cenozoic non marine clastic strata of the Manantiales basin, at the bcundary between the Principal and Frontal Cordilleras of the Andes of southern San Juan Province, Argentina, the authors interpret deformation history of the La Ramada thrust belt. The 3,600 ...
... Based on study of the ages and nature of Cenozoic non marine clastic strata of the Manantiales basin, at the bcundary between the Principal and Frontal Cordilleras of the Andes of southern San Juan Province, Argentina, the authors interpret deformation history of the La Ramada thrust belt. The 3,600 ...
Unit 1 The Ocean Basins
... According to fossil and rock records, oceans have existed on Earth for at least 3.8 billion years. It is easy to think that they are permanent features, ancient and unchanging. However, the only thing that is truly constant about ocean basins — and continents — is that they are always moving and cha ...
... According to fossil and rock records, oceans have existed on Earth for at least 3.8 billion years. It is easy to think that they are permanent features, ancient and unchanging. However, the only thing that is truly constant about ocean basins — and continents — is that they are always moving and cha ...
FOSI BeritaSedimentologi BS 23 March2012
... crust then sank of its own accord and pulled the subduction zone across the Banda Sea area in a horseshoe shape. The overlying arc migrated south and east and the northern margin was largely a strike-slip margin. Backarc spreading occurred NW of the arc in the present Banda Sea. Hall (2002) infers t ...
... crust then sank of its own accord and pulled the subduction zone across the Banda Sea area in a horseshoe shape. The overlying arc migrated south and east and the northern margin was largely a strike-slip margin. Backarc spreading occurred NW of the arc in the present Banda Sea. Hall (2002) infers t ...
Seismic evidence of Alpine crustal thickening and wedging from the
... crustal structure beneath the northern Iberian Peninsula, as revealed from a new set of seismic refraction/wide-angle reflection profiles. The study area is characterized by two major E-W ranges, the Cantabrian Mountains and the Pyrenees, which are relayed to the south by the Iberian Chain. Importan ...
... crustal structure beneath the northern Iberian Peninsula, as revealed from a new set of seismic refraction/wide-angle reflection profiles. The study area is characterized by two major E-W ranges, the Cantabrian Mountains and the Pyrenees, which are relayed to the south by the Iberian Chain. Importan ...
2. Geophysics and the Structure of the Lesser Antilles Forearc
... flanking ridges. Two of these that can be seen near the Lesser Antilles are the Barracuda Ridge and Tiburon Rise; another farther east is the Researcher Ridge. The troughs and the ridges farther south are not shown by the bathymetry, because they are filled and covered by sediment, but they can be t ...
... flanking ridges. Two of these that can be seen near the Lesser Antilles are the Barracuda Ridge and Tiburon Rise; another farther east is the Researcher Ridge. The troughs and the ridges farther south are not shown by the bathymetry, because they are filled and covered by sediment, but they can be t ...
Cenozoic geology of the Yerington district, Nevada, and implications
... ignimbrites, and thin interbeds of rhyolitic sedimentary rocks and tuff. For mapping purposes, the sequences has been divided into 10 units, which are fairly uniform and continuous throughout and beyond the district. Individual mapping units are distinctive enough to be identifiable, even in drill h ...
... ignimbrites, and thin interbeds of rhyolitic sedimentary rocks and tuff. For mapping purposes, the sequences has been divided into 10 units, which are fairly uniform and continuous throughout and beyond the district. Individual mapping units are distinctive enough to be identifiable, even in drill h ...
Evolution of the Eocene Galisteo Basin, north
... and sixty-seven readings were taken, primarily in the Hagan basin. However, several measurements were obtained, including some parting lineations, from other Galisteo exposures. Fossil logs were found to have no preferred orientation with respect to paleocurrent directions. Gorham (1979) describes s ...
... and sixty-seven readings were taken, primarily in the Hagan basin. However, several measurements were obtained, including some parting lineations, from other Galisteo exposures. Fossil logs were found to have no preferred orientation with respect to paleocurrent directions. Gorham (1979) describes s ...
the mississippian barnett formation
... In outcrops, the Chappel Formation consists of light-colored, fine to coarse grained, skeletal packstone (Watson, 1980). Although ostracodes, corals, and other fossils are common, it is the abundance of crinoids, in many cases red, that distinguishes the Chappel. The thickness of the Chappel is typ ...
... In outcrops, the Chappel Formation consists of light-colored, fine to coarse grained, skeletal packstone (Watson, 1980). Although ostracodes, corals, and other fossils are common, it is the abundance of crinoids, in many cases red, that distinguishes the Chappel. The thickness of the Chappel is typ ...
Steady, balanced rates of uplift and erosion of the Santa Monica
... mountain range, the Santa Monica Mountains, southern California, was assessed using landscape attributes of the present topography, uplift rates and denudation rates. Landscape features were characterized through analysis of a digital elevation model (DEM). Uplift rates at time scales ranging from 1 ...
... mountain range, the Santa Monica Mountains, southern California, was assessed using landscape attributes of the present topography, uplift rates and denudation rates. Landscape features were characterized through analysis of a digital elevation model (DEM). Uplift rates at time scales ranging from 1 ...
Relations between sedimentary basins and petroleum
... evolution of the Earth’s outer shell, or lithosphere. The lithosphere is fragmented into a series of smaller segments, known as plates, which move relative to one another. The term plate tectonics also refers to that branch of the geological sciences which studies the morphology and movements of pla ...
... evolution of the Earth’s outer shell, or lithosphere. The lithosphere is fragmented into a series of smaller segments, known as plates, which move relative to one another. The term plate tectonics also refers to that branch of the geological sciences which studies the morphology and movements of pla ...
2. Neogene Tectonic Evolution of the New Hebrides Island Arc
... in Hole 832B, has a 0.13-0.44 m.y. hiatus. This unconformity appears to represent the time that the d'Entrecasteaux Zone collided with the arc from central to southern Espiritu Santo Island, causing major uplift of the island during early Pleistocene time. The d'Entrecasteaux Zone collision has had ...
... in Hole 832B, has a 0.13-0.44 m.y. hiatus. This unconformity appears to represent the time that the d'Entrecasteaux Zone collided with the arc from central to southern Espiritu Santo Island, causing major uplift of the island during early Pleistocene time. The d'Entrecasteaux Zone collision has had ...
Messinian salinity crisis
The Messinian Salinity Crisis (MSC), also referred to as the Messinian Event, and in its latest stage as the Lago Mare event, was a geological event during which the Mediterranean Sea went into a cycle of partly or nearly complete desiccation throughout the latter part of the Messinian age of the Miocene epoch, from 5.96 to 5.33 Ma (million years ago). It ended with the Zanclean flood, when the Atlantic reclaimed the basin.Sediment samples from below the deep seafloor of the Mediterranean Sea, which include evaporite minerals, soils, and fossil plants, show that, about 5.96 million years ago in the late Miocene period, the precursor of the Strait of Gibraltar closed tight and the Mediterranean Sea, for the first time and then repeatedly, partially desiccated. The strait closed 5.6 Ma for the last time and, because of the generally dry climate conditions, within a millennium the Mediterranean basin nearly completely dried out, evaporating into a deep dry basin bottoming at some places 3 to 5 km (1.9 to 3.1 mi) below the world ocean level, with a few hypersaline Dead Sea-like pockets. Around 5.5 Ma, less dry climatic conditions allowed the basin to resume receiving more fresh water from rivers, with pockets of Caspian-like brackish waters getting progressively less hyper-saline, until the Strait of Gibraltar finally reopened 5.33 Ma with the Zanclean flood.Even now the Mediterranean is saltier than the North Atlantic because of its near isolation by the Strait of Gibraltar and its high rate of evaporation. If the Strait of Gibraltar closes again, which is likely to happen in the near geological future (though extremely distantly on a human time scale), the Mediterranean would mostly evaporate in about a thousand years. After that, continued northward movement of Africa may obliterate the Mediterranean: see Mediterranean Ridge.