STATE GEOLOGICAL MAP OF UKRAINE
... Among the works of Zakarpatska GEE it should be noted the Vygorlat-Gutynskiy Ridge gold-potential evaluation in 1974-1977 (Galakhov et al., 1977); prospecting and evaluation of gold and silver ores in Kvasivska and Biganska sites (Rozdobudko, 1984, 1988); prospecting for gold and polymetals by geolo ...
... Among the works of Zakarpatska GEE it should be noted the Vygorlat-Gutynskiy Ridge gold-potential evaluation in 1974-1977 (Galakhov et al., 1977); prospecting and evaluation of gold and silver ores in Kvasivska and Biganska sites (Rozdobudko, 1984, 1988); prospecting for gold and polymetals by geolo ...
Lithostratigraphic and tectonic framework of Jurassic
... Mesozoic volcanic and plutonic arc magmatic suites, marine and nonmarine clastic basins, high-grade metamorphic complexes, and accretionary rocks. Jurassic and Cretaceous clastic basins within this framework contain stratigraphy with hydrocarbon potential. The geology is complicated by Cretaceous to ...
... Mesozoic volcanic and plutonic arc magmatic suites, marine and nonmarine clastic basins, high-grade metamorphic complexes, and accretionary rocks. Jurassic and Cretaceous clastic basins within this framework contain stratigraphy with hydrocarbon potential. The geology is complicated by Cretaceous to ...
46_1996_Ilg et al_GSABull_Tectonic evolution in GC
... locally constructed on, or juxtaposed with, older (1.84 Ga) sialic crust and intruded by 1.74–1.71 Ga plutonic rocks. Primary structures such as relict pillows and graded bedding show that the sedimentary rocks were locally deposited on the volcanic sequence and that the mafic and felsic metavolcani ...
... locally constructed on, or juxtaposed with, older (1.84 Ga) sialic crust and intruded by 1.74–1.71 Ga plutonic rocks. Primary structures such as relict pillows and graded bedding show that the sedimentary rocks were locally deposited on the volcanic sequence and that the mafic and felsic metavolcani ...
Detrital Zircons from Missi Metasedimentary Rocks, Flin Flon Basin
... granodiorite which intrudes the supracrustal sequence, and suggested that th e age of sedimentation was 1850 :t 1 Ma. The only constraint on the timing o f sedimentation in the Flin Flon Domain is provided by a U-Pb zircon age of 1832 :t2 Ma obtained from a felsi c roe_~ near Snow Lake, which is int ...
... granodiorite which intrudes the supracrustal sequence, and suggested that th e age of sedimentation was 1850 :t 1 Ma. The only constraint on the timing o f sedimentation in the Flin Flon Domain is provided by a U-Pb zircon age of 1832 :t2 Ma obtained from a felsi c roe_~ near Snow Lake, which is int ...
Have the ancient cities of Sodom and Gomorrah been
... separate from the Lisan Formation and were laid down at a different time but are similar in character to the deposits in the Lisan Formation. One erosional structure on Mt. Sedom is a pillar that is called “Lot’s wife” and is southwest of the Dead Sea in the same area that the supposed city of Sodom ...
... separate from the Lisan Formation and were laid down at a different time but are similar in character to the deposits in the Lisan Formation. One erosional structure on Mt. Sedom is a pillar that is called “Lot’s wife” and is southwest of the Dead Sea in the same area that the supposed city of Sodom ...
From Source to Sinks in Auriferous Magmatic
... alters the rock to mineral assemblages consisting of quartz, K-feldspar, biotite, anhydrite and magnetite – the potassic alteration assemblage (Figs. 4a and 5a, b) (Gustafson and Hunt 1975). In alkalic porphyry systems, the Ca-bearing minerals garnet, diopside and actinolite are reported in equilibr ...
... alters the rock to mineral assemblages consisting of quartz, K-feldspar, biotite, anhydrite and magnetite – the potassic alteration assemblage (Figs. 4a and 5a, b) (Gustafson and Hunt 1975). In alkalic porphyry systems, the Ca-bearing minerals garnet, diopside and actinolite are reported in equilibr ...
bureau of geology - Department of Geosciences
... This thesis has been submitted in partial fulfillment of requirements for an advanced degree at The University of Arizona and is deposited in the University Library to be made available to borrowers under rules of the Library. Brief quotations from this thesis are allowable without special permissio ...
... This thesis has been submitted in partial fulfillment of requirements for an advanced degree at The University of Arizona and is deposited in the University Library to be made available to borrowers under rules of the Library. Brief quotations from this thesis are allowable without special permissio ...
Stratigraphy, Structure, and Petrology of the
... east of Seattle, in the Central Cascade Range of Washington (Fig. 1). Interstate 90 (U. S. Highway 10) crosses the Cascade Crest at Snoqualmie Pass, 3004 ft elevation, and the Burlington Northern Railroad (formerly the Milwaukie, St. Paul and Pacific) passes 2 mi (3 km) south of Snoqualmie Pass. ...
... east of Seattle, in the Central Cascade Range of Washington (Fig. 1). Interstate 90 (U. S. Highway 10) crosses the Cascade Crest at Snoqualmie Pass, 3004 ft elevation, and the Burlington Northern Railroad (formerly the Milwaukie, St. Paul and Pacific) passes 2 mi (3 km) south of Snoqualmie Pass. ...
Trace element and isotope geochemistry of gabbro
... of orthopyroxene and the occurrence of intercumulus Al-spinel; (iii) the trace element composition of clinopyroxene and plagioclase. The AFC modelling on the basis of isotopic compositions shows that the gabbro-derived granulites may have originated through a process involving a primary tholeiitic m ...
... of orthopyroxene and the occurrence of intercumulus Al-spinel; (iii) the trace element composition of clinopyroxene and plagioclase. The AFC modelling on the basis of isotopic compositions shows that the gabbro-derived granulites may have originated through a process involving a primary tholeiitic m ...
Relationship between Moldanubicum, the Kutn· Hora Crystalline
... Institute of Geology and Palaentology, Charles University, Albertov 6, 128 43 Praha 2, Czech Republic The Moldanubian Zone, forming a highly metamorphosed root of the Variscan orogenic belt in Central Europe, is surrounded by several different lithotectonic units within the Bohemian Massif. These un ...
... Institute of Geology and Palaentology, Charles University, Albertov 6, 128 43 Praha 2, Czech Republic The Moldanubian Zone, forming a highly metamorphosed root of the Variscan orogenic belt in Central Europe, is surrounded by several different lithotectonic units within the Bohemian Massif. These un ...
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 ...
Basement Lithologic Framework and Structural Features of the
... A supracrustal package that included migmatitic to diatexitic psammopelite to pelite, quartzite, garnet-rich silicate facies iron formation and mafic granulite was observed in diamond drill-hole CAR-60, located about 2 km to the north of Carswell Lake (Card, 2001). These rock types are similar to th ...
... A supracrustal package that included migmatitic to diatexitic psammopelite to pelite, quartzite, garnet-rich silicate facies iron formation and mafic granulite was observed in diamond drill-hole CAR-60, located about 2 km to the north of Carswell Lake (Card, 2001). These rock types are similar to th ...
- NERC Open Research Archive
... Torridonian and Cambrian–Ordovician sedimentary rocks. The orthogneisses were largely derived from felsic, mafic and ultramafic intrusive igneous protoliths. The Torridonian rocks are mostly fluviatile to lacustrine, red-brown arkosic sandstones with local conglomerates and minor siltstones and muds ...
... Torridonian and Cambrian–Ordovician sedimentary rocks. The orthogneisses were largely derived from felsic, mafic and ultramafic intrusive igneous protoliths. The Torridonian rocks are mostly fluviatile to lacustrine, red-brown arkosic sandstones with local conglomerates and minor siltstones and muds ...
7.13 Furayh group basin
... minor limestone, and basalt. It is well bedded and contains a variety of structures that definitively demonstrate a sedimentary origin even though the clastic grains that make up the rock are lithic fragments, quartz, and feldspar in a clay-silt matrix that were derived mostly by weathering of volca ...
... minor limestone, and basalt. It is well bedded and contains a variety of structures that definitively demonstrate a sedimentary origin even though the clastic grains that make up the rock are lithic fragments, quartz, and feldspar in a clay-silt matrix that were derived mostly by weathering of volca ...
Geology of the Granby Fault, an Eocene Extensional Fault in
... The syenite of the Coryell suite is mainly exposed as a pluton more than 2 km wide in the hanging-wall of the Granby Fault at the northern end of the map area. There, it occurs as a pink, coarse-grained, K-feldspar + biotite ± amphibole- phyric syenite, that may grade into a massive K-feldspar megac ...
... The syenite of the Coryell suite is mainly exposed as a pluton more than 2 km wide in the hanging-wall of the Granby Fault at the northern end of the map area. There, it occurs as a pink, coarse-grained, K-feldspar + biotite ± amphibole- phyric syenite, that may grade into a massive K-feldspar megac ...
geology of the granby fault, an eocene extensional fault in southeast
... The syenite of the Coryell suite is mainly exposed as a pluton more than 2 km wide in the hanging-wall of the Granby Fault at the northern end of the map area. There, it occurs as a pink, coarse-grained, K-feldspar + biotite ± amphibole- phyric syenite, that may grade into a massive K-feldspar megac ...
... The syenite of the Coryell suite is mainly exposed as a pluton more than 2 km wide in the hanging-wall of the Granby Fault at the northern end of the map area. There, it occurs as a pink, coarse-grained, K-feldspar + biotite ± amphibole- phyric syenite, that may grade into a massive K-feldspar megac ...
borehole geology and alteration mineralogy of well he
... over some 50 km². The geothermal activity is believed to be connected to three volcanic systems. The geothermal area in Reykjadalur, Hveragerdi belongs to the oldest system, called the Grensdalur system. North of this is a volcanic system named after Mt. Hrómundartindur, which last erupted about 10, ...
... over some 50 km². The geothermal activity is believed to be connected to three volcanic systems. The geothermal area in Reykjadalur, Hveragerdi belongs to the oldest system, called the Grensdalur system. North of this is a volcanic system named after Mt. Hrómundartindur, which last erupted about 10, ...
GEOLOGIC MAP OF SOUTHEASTERN ALASKA INTRODUCTION
... deformation and (or) metamorphism are poorly known, (2) they are found in geologic units that grade from relatively intact stratigraphic sequences to metamorphic or structural units, or (3) they are known or interpreted to include two or more geologic units of formation rank that are not generally c ...
... deformation and (or) metamorphism are poorly known, (2) they are found in geologic units that grade from relatively intact stratigraphic sequences to metamorphic or structural units, or (3) they are known or interpreted to include two or more geologic units of formation rank that are not generally c ...
BELT OROGENESIS ALONG THE NORTHERN MARGIN Charles S
... Hietanen (1967) described the St. Regis Formation as 100 to 300 meters of garnet-mica schist with some layers of biotite gneiss or biotite quartzite, and in another report (Hietanen, 1968) as 100 meters of ...
... Hietanen (1967) described the St. Regis Formation as 100 to 300 meters of garnet-mica schist with some layers of biotite gneiss or biotite quartzite, and in another report (Hietanen, 1968) as 100 meters of ...
geophysical well logging: geological wireline logs and
... Drilling into the crust of the earth makes it possible for us to lower instruments into the boreholes and carry out in situ measurements in order to gain information on the physical properties of the rock formation surrounding the well, as well as the temperature and pressure within the well. This f ...
... Drilling into the crust of the earth makes it possible for us to lower instruments into the boreholes and carry out in situ measurements in order to gain information on the physical properties of the rock formation surrounding the well, as well as the temperature and pressure within the well. This f ...
Geologic Map of the Lucile Quadrangle, Idaho County, Idaho: DWM
... (unit Pmt) with mutually cross-cutting relationships. Metatonalite decreases southward and is absent in the Cow Creek drainage. Pervasively metamorphosed to greenschist grade, with the groundmass and many crystals altered to chlorite, sericite, and epidote. At the northern map boundary, some of this ...
... (unit Pmt) with mutually cross-cutting relationships. Metatonalite decreases southward and is absent in the Cow Creek drainage. Pervasively metamorphosed to greenschist grade, with the groundmass and many crystals altered to chlorite, sericite, and epidote. At the northern map boundary, some of this ...
Micro-Raman study of Precambrian Permineralized Cells from the
... Life may have appeared at this time and disappeared since. Search for past traces of microbial life. Life may have appeared at this time and still survives today in ecological niches. Search also for present microbial life. On icy satellites: ...
... Life may have appeared at this time and disappeared since. Search for past traces of microbial life. Life may have appeared at this time and still survives today in ecological niches. Search also for present microbial life. On icy satellites: ...
Mineral Hunters Guide: Ruggles Mine Edition
... Igneous rock - crystalline rocks formed from cooling magma. If the igneous rock forms underground it cools slowly, has large grains and is called plutonic igneous rock. Igneous rock formed from lava on the surface cools rapidly, has small grains and is called volcanic igneous rock. ...
... Igneous rock - crystalline rocks formed from cooling magma. If the igneous rock forms underground it cools slowly, has large grains and is called plutonic igneous rock. Igneous rock formed from lava on the surface cools rapidly, has small grains and is called volcanic igneous rock. ...
Information Circular No. 358
... Six ultramafic-mafic intrusions, emplaced during the orogeny at about 350-250 Ma, include the Badong, Xinjie, Panzhihua, Lufangqing and Dayanzi layered bodies in the Pan-Xi area and the Yangliuping body in the Danba area. These intrusions occur in a north-south striking belt, which is approximately ...
... Six ultramafic-mafic intrusions, emplaced during the orogeny at about 350-250 Ma, include the Badong, Xinjie, Panzhihua, Lufangqing and Dayanzi layered bodies in the Pan-Xi area and the Yangliuping body in the Danba area. These intrusions occur in a north-south striking belt, which is approximately ...
Clastic rock
Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus, chunks and smaller grains of rock broken off other rocks by physical weathering. Geologists use the term clastic with reference to sedimentary rocks as well as to particles in sediment transport whether in suspension or as bed load, and in sediment deposits.