v. sulawesi - Vangorselslist
... Andreason, M.W., A.F. Chatfield, J.A. Curiale, M.V. Filewicz, E.D. Lumadyo et al. (2000)- Exploration in the gravity collapse rifts of the Salayar Basin, Indonesia. AAPG 2000 Ann. Mtg (Abstract only) (Salayar Basin offshore SW Sulawesi (S end Makassar Straits) gravity collapse rift formed in M Creta ...
... Andreason, M.W., A.F. Chatfield, J.A. Curiale, M.V. Filewicz, E.D. Lumadyo et al. (2000)- Exploration in the gravity collapse rifts of the Salayar Basin, Indonesia. AAPG 2000 Ann. Mtg (Abstract only) (Salayar Basin offshore SW Sulawesi (S end Makassar Straits) gravity collapse rift formed in M Creta ...
USGS Professional Paper 1697 - Alaska Resources Library and
... series of continental-margin arcs and companion subduction-zone assemblages around the CircumNorth Pacific; (2) continuation of opening of major sedimentary basins behind major arcs; (3) in the eastern part of the Circum-North Pacific, dextral transpression between the Pacific ocean plate and the pr ...
... series of continental-margin arcs and companion subduction-zone assemblages around the CircumNorth Pacific; (2) continuation of opening of major sedimentary basins behind major arcs; (3) in the eastern part of the Circum-North Pacific, dextral transpression between the Pacific ocean plate and the pr ...
Bedrock Geology of the High Peaks Region, Marcy Massif
... Our Pitchoff Gneiss is analogous to the "quartz mangerite series" of de Waard(1969, 1970) and others only insofar as petrographic distinctions are made(Fig. 4). According to a model suggested by Buddington(1969) for the Adirondack anorthosite series, a parent gabbroic anorthosite magma made up of 60 ...
... Our Pitchoff Gneiss is analogous to the "quartz mangerite series" of de Waard(1969, 1970) and others only insofar as petrographic distinctions are made(Fig. 4). According to a model suggested by Buddington(1969) for the Adirondack anorthosite series, a parent gabbroic anorthosite magma made up of 60 ...
PETROLOGY AND GEOCHEMISTRY OF THE WILDCAT GULCH
... Southwest of Gunnison, Colorado, within the Wildcat Gulch study area, syenitoid plutons intrude the Proterozoic Dubois Greenstone. Limited work has been done to document their lithologic character, ascertain their origin, or place them within the regional geology of central Colorado. These syenitoid ...
... Southwest of Gunnison, Colorado, within the Wildcat Gulch study area, syenitoid plutons intrude the Proterozoic Dubois Greenstone. Limited work has been done to document their lithologic character, ascertain their origin, or place them within the regional geology of central Colorado. These syenitoid ...
Geology and Resources of Fluorine in the United States
... Fluorine mineral resources are evaluated in this report in the perspective of the geochemistry of fluorine and the geologic environment of fluorine mineral deposits. Rapidly increasing demand and the possibility of shortages in supply of fluorspar and other fluorine products that are vital to the ec ...
... Fluorine mineral resources are evaluated in this report in the perspective of the geochemistry of fluorine and the geologic environment of fluorine mineral deposits. Rapidly increasing demand and the possibility of shortages in supply of fluorspar and other fluorine products that are vital to the ec ...
Radiometric Dating Reappraised
... Thus open systems caused by geologic events (“geological interpretation”) is claimed as a cause of spurious dates, but a less self-congratulatory view would be that only a select number of dates are accepted as indicating the true age of the rock; others explained away as having become open systems. ...
... Thus open systems caused by geologic events (“geological interpretation”) is claimed as a cause of spurious dates, but a less self-congratulatory view would be that only a select number of dates are accepted as indicating the true age of the rock; others explained away as having become open systems. ...
Chapter 7
... intersection of three subgrain boundaries, with misorientations exceeding 4˚, allowed the melt phase to infiltrate the grain (fig 6.13-15). The diameter of such intragranular melt tubes along subgrain intersections ranged in size from 20 nm to 200 nm. These observations indicate that the transition ...
... intersection of three subgrain boundaries, with misorientations exceeding 4˚, allowed the melt phase to infiltrate the grain (fig 6.13-15). The diameter of such intragranular melt tubes along subgrain intersections ranged in size from 20 nm to 200 nm. These observations indicate that the transition ...
Tectonostratigraphic Terranes and Tectonic Evolution of Mexico
... Sonora Megashear and Late Cretaceous-Paleogene northward displacement of Baja California. Next, we review constraints imposed by plate motion models on the tectonic evolution of the region. Finally, we present a reconstruction of the tectonic evolution of the region that, while certainly not a uniqu ...
... Sonora Megashear and Late Cretaceous-Paleogene northward displacement of Baja California. Next, we review constraints imposed by plate motion models on the tectonic evolution of the region. Finally, we present a reconstruction of the tectonic evolution of the region that, while certainly not a uniqu ...
here - Lehigh University
... Collins, N. C., Bebout, G. E., Angiboust, S., Agard, P., Scambelluri, M., Crispini, L., and John, T., 2015, Subduction zone metamorphic pathway for deep carbon cycling: II. Evidence from HP/UHP metabasaltic rocks and ophicarbonates, Chemical Geology, 412, 132-150. Penniston-Dorland, S. C., Gorman, ...
... Collins, N. C., Bebout, G. E., Angiboust, S., Agard, P., Scambelluri, M., Crispini, L., and John, T., 2015, Subduction zone metamorphic pathway for deep carbon cycling: II. Evidence from HP/UHP metabasaltic rocks and ophicarbonates, Chemical Geology, 412, 132-150. Penniston-Dorland, S. C., Gorman, ...
Clark, D.A., Geuna, S., and Schmidt, P.W., 2003
... deposits are extremely variable and exploration that is based simply on searching for signatures that resemble those of known deposits is rarely successful. A number of well-known geological models of porphyry and epithermal deposits are routinely used in exploration, even though most deposits fail ...
... deposits are extremely variable and exploration that is based simply on searching for signatures that resemble those of known deposits is rarely successful. A number of well-known geological models of porphyry and epithermal deposits are routinely used in exploration, even though most deposits fail ...
Petrology Lecture 11
... • There is thus a general correlation between temperature and the maximum An-content of the stable plagioclase At low metamorphic grades only albite (An0-3) is stable In the upper-greenschist facies oligoclase becomes stable. The An-content of plagioclase thus jumps from An1-7 to An17-20 (across ...
... • There is thus a general correlation between temperature and the maximum An-content of the stable plagioclase At low metamorphic grades only albite (An0-3) is stable In the upper-greenschist facies oligoclase becomes stable. The An-content of plagioclase thus jumps from An1-7 to An17-20 (across ...
the orivesi granite batholith, southern central finland
... aligned in the direction of the foliation. The Kfeldspar phenocrysts can have a bimodal size distribution with mixed smaller and larger grains. The main minerals of the aplite granite are quartz, plagioclase, potassium feldspar and biotite. The contacts against the Orivesi granite are distinct, but ...
... aligned in the direction of the foliation. The Kfeldspar phenocrysts can have a bimodal size distribution with mixed smaller and larger grains. The main minerals of the aplite granite are quartz, plagioclase, potassium feldspar and biotite. The contacts against the Orivesi granite are distinct, but ...
Introduction to Metamorphism
... • Result of thermal (and possibly metasomatic) effects of hot magma intruding cooler shallow rocks •O Occur over wide id range off pressures, including very low P Geologic Map and cross-section of the area around the Skiddaw granite, Lake District, UK. Image: Winter (2001) ...
... • Result of thermal (and possibly metasomatic) effects of hot magma intruding cooler shallow rocks •O Occur over wide id range off pressures, including very low P Geologic Map and cross-section of the area around the Skiddaw granite, Lake District, UK. Image: Winter (2001) ...
Guidebook
... and the Dinarides. In order to accomplish the abovementioned tasks during the fieldtrip, a part of the significant geological cross sections in the East and South Carpathians as well as in the Apuseni Mts will be visited. Thus we will examine the tectonic units issued from the Tethyan Ocean - squeez ...
... and the Dinarides. In order to accomplish the abovementioned tasks during the fieldtrip, a part of the significant geological cross sections in the East and South Carpathians as well as in the Apuseni Mts will be visited. Thus we will examine the tectonic units issued from the Tethyan Ocean - squeez ...
- Free Documents
... and broken by faults. . von der Borch et al. A section from south to north on Sumba shows all formations dipping to the north.. Comparison with the Permian paleomagnetic direction of Timor indicates that Sumba was subjected to a clockwise rotation through .. . Otofuji et al. Vroon et al. Origin of t ...
... and broken by faults. . von der Borch et al. A section from south to north on Sumba shows all formations dipping to the north.. Comparison with the Permian paleomagnetic direction of Timor indicates that Sumba was subjected to a clockwise rotation through .. . Otofuji et al. Vroon et al. Origin of t ...
Thematic Article A bathymetric overview of the Mariana forearc
... from south of 13°N to 25°N, permits the ®rst comprehensive overview of this feature. The Mariana forearc represents a sediment-starved end-member. The forearc in its southern and central sections is divisible into a structurally complex eastern province and a less-deformed western province. Despite ...
... from south of 13°N to 25°N, permits the ®rst comprehensive overview of this feature. The Mariana forearc represents a sediment-starved end-member. The forearc in its southern and central sections is divisible into a structurally complex eastern province and a less-deformed western province. Despite ...
GEOLOGICAL SURVEY OF FINLAND Special Paper 48 2008 GTK
... This Special Paper summarizes the work of the GTK Consortium in Mozambique 2002–2007, comprising geological mapping, mineral resources assessment, geochemical and industrial mineral surveys, GIS map production, data management and comprehensive reporting. The work was carried out within three projec ...
... This Special Paper summarizes the work of the GTK Consortium in Mozambique 2002–2007, comprising geological mapping, mineral resources assessment, geochemical and industrial mineral surveys, GIS map production, data management and comprehensive reporting. The work was carried out within three projec ...
Reprint - Frederic MOUTHEREAU
... above a viscous lower crust. In contrast, the weak sedimentary cover deforms by buckling of a thick multilayered cover. Thrust faulting associated with folding occurs in the competent layers and is responsible for most of the earthquakes. There is evidence that the role of the slab pull force in dri ...
... above a viscous lower crust. In contrast, the weak sedimentary cover deforms by buckling of a thick multilayered cover. Thrust faulting associated with folding occurs in the competent layers and is responsible for most of the earthquakes. There is evidence that the role of the slab pull force in dri ...
Melt migration beneath mid-ocean ridges
... has yet to be determined and it is still not clear whether the pressure gradient arising from mantle £ow with a viscosity of less than 1021 Pa s is su¤cient to direct melt towards the ridge. The third theory considers the partially molten upper mantle as a reactive, permeable compacting/decompacting ...
... has yet to be determined and it is still not clear whether the pressure gradient arising from mantle £ow with a viscosity of less than 1021 Pa s is su¤cient to direct melt towards the ridge. The third theory considers the partially molten upper mantle as a reactive, permeable compacting/decompacting ...
Geology and petrology of the felsic intrusions in the
... expertise of GIS and mapping projects has been very helpful. Furthermore I also want to thank Professor Fernandez-Alonso, head of the geology department at the RMCA, for the collaboration with Ghent University. Together with Luc André, I want to thank him for the approval and financial contribution ...
... expertise of GIS and mapping projects has been very helpful. Furthermore I also want to thank Professor Fernandez-Alonso, head of the geology department at the RMCA, for the collaboration with Ghent University. Together with Luc André, I want to thank him for the approval and financial contribution ...
Not Getting the Drift - Personal webpages at NTNU
... vertical crustal movement. He avoided far-fetched continental-drift hypotheses by Hopkins in 1844 and Pepper in 1861. Their notions of drift were supported by fossil and paleoclimate evidence, but their causes were global magnetism and electrochemical crystallization and dissolution. Danaʼs textbook ...
... vertical crustal movement. He avoided far-fetched continental-drift hypotheses by Hopkins in 1844 and Pepper in 1861. Their notions of drift were supported by fossil and paleoclimate evidence, but their causes were global magnetism and electrochemical crystallization and dissolution. Danaʼs textbook ...
Tectonostratigraphic Succession and Development of the
... basement gneisses noted above, or in places separated from these, one finds yet another foreign element in the allochthon in the form of heterogeneous units of carbonate rocks, pelites, greenstone and local serpentinites (Plate 1). These are usually of lower metamorphic gråde than the crystalline gn ...
... basement gneisses noted above, or in places separated from these, one finds yet another foreign element in the allochthon in the form of heterogeneous units of carbonate rocks, pelites, greenstone and local serpentinites (Plate 1). These are usually of lower metamorphic gråde than the crystalline gn ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.