Magmatic Apatite: A Powerful, Yet Deceptive
... The composition of apatite is determined using a variety of techniques with electron probe microanalysis (EPMA) being the most common. Analysis by EPMA was considered reliable until Stormer et al. (1993) made a troubling observation: the measured X-ray flux from apatite is affected by crystal orient ...
... The composition of apatite is determined using a variety of techniques with electron probe microanalysis (EPMA) being the most common. Analysis by EPMA was considered reliable until Stormer et al. (1993) made a troubling observation: the measured X-ray flux from apatite is affected by crystal orient ...
Tungsten profile - British Geological Survey
... sulphide group of tungsten minerals. It has the same hexagonal layered structure as molybdenite (MoS2); the chief difference being its higher specific gravity. Tungstenite is a dark lead-grey mineral that occurs in massive form and in scaly or feathery aggregates. ...
... sulphide group of tungsten minerals. It has the same hexagonal layered structure as molybdenite (MoS2); the chief difference being its higher specific gravity. Tungstenite is a dark lead-grey mineral that occurs in massive form and in scaly or feathery aggregates. ...
Tungsten profile - British Geological Survey
... sulphide group of tungsten minerals. It has the same hexagonal layered structure as molybdenite (MoS2); the chief difference being its higher specific gravity. Tungstenite is a dark lead-grey mineral that occurs in massive form and in scaly or feathery aggregates. ...
... sulphide group of tungsten minerals. It has the same hexagonal layered structure as molybdenite (MoS2); the chief difference being its higher specific gravity. Tungstenite is a dark lead-grey mineral that occurs in massive form and in scaly or feathery aggregates. ...
v. sulawesi - Vangorselslist
... V.2. Buton, Tukang Besi Islands Buton and the adjacent Tukang-Besi islands are located at the SE end of SE Sulawesi and are frequently viewed as a small micro-continental plate that collided with East Sulawesi in Miocene time. However, its geology and stratigraphy share many similarities with SE Sul ...
... V.2. Buton, Tukang Besi Islands Buton and the adjacent Tukang-Besi islands are located at the SE end of SE Sulawesi and are frequently viewed as a small micro-continental plate that collided with East Sulawesi in Miocene time. However, its geology and stratigraphy share many similarities with SE Sul ...
ChemCam results from the Shaler outcrop in Gale crater, Mars
... The ChemCam campaign at the fluvial sedimentary outcrop ‘‘Shaler’’ resulted in observations of 28 non-soil targets, 26 of which included active laser induced breakdown spectroscopy (LIBS), and all of which included Remote Micro-Imager (RMI) images. The Shaler outcrop can be divided into seven facies ...
... The ChemCam campaign at the fluvial sedimentary outcrop ‘‘Shaler’’ resulted in observations of 28 non-soil targets, 26 of which included active laser induced breakdown spectroscopy (LIBS), and all of which included Remote Micro-Imager (RMI) images. The Shaler outcrop can be divided into seven facies ...
Accuracy of plagioclase compositions from laboratory and Mars
... modes [Iiishi et al., 1971; Ruff, 1998]. Work by Hamilton and Christensen [2000] suggested that plagioclase compositions could be derived to within 10– 15 An using a linear deconvolution technique similar to that of Ramsey and Christensen [1998] developed by J. L. Bandfield. [6] Wyatt et al. [2001] ...
... modes [Iiishi et al., 1971; Ruff, 1998]. Work by Hamilton and Christensen [2000] suggested that plagioclase compositions could be derived to within 10– 15 An using a linear deconvolution technique similar to that of Ramsey and Christensen [1998] developed by J. L. Bandfield. [6] Wyatt et al. [2001] ...
GEOLOGY OF THE PURCELL SUPERGROUP SOUTHEASTERN
... The Fernie west-half map area is underlain by Middle ProterozoicPurcell Supergroup, Late Proterozoic Windermere and Paleozoic miogeoclinal rocks. The Purcell Supergroup, the main focus of this study, has been affected by tectonic events in Middle and Late Proterozoic, Early Paleozoic and Mesozoic ti ...
... The Fernie west-half map area is underlain by Middle ProterozoicPurcell Supergroup, Late Proterozoic Windermere and Paleozoic miogeoclinal rocks. The Purcell Supergroup, the main focus of this study, has been affected by tectonic events in Middle and Late Proterozoic, Early Paleozoic and Mesozoic ti ...
document - OurEnergyPolicy.org
... brecciated Caballos Novaculaite (Units 1-3), which are tightly folded along with associated strata ...................................................................................................................................... 66 Exhibit 3-34 Structural framework map of the Val Verde subbas ...
... brecciated Caballos Novaculaite (Units 1-3), which are tightly folded along with associated strata ...................................................................................................................................... 66 Exhibit 3-34 Structural framework map of the Val Verde subbas ...
Three lithospheric transects across the Alps and their forelands
... 1. General Introduction The European Alps, located in south-central Europe, record the closure of several ocean basins located in the Mediterranean domain during the Late Cretaceous and Cenozoic convergence of the African (or Apulian) and European plates (e.g. Trümpy 1960, Frisch 1979, Haas et al. 1 ...
... 1. General Introduction The European Alps, located in south-central Europe, record the closure of several ocean basins located in the Mediterranean domain during the Late Cretaceous and Cenozoic convergence of the African (or Apulian) and European plates (e.g. Trümpy 1960, Frisch 1979, Haas et al. 1 ...
Chapter 9
... The oceanic crust is the upper portion of the oceanic lithosphere forming at the ridge crest and being covered by an increasing thickness of oceanic sediments; the black (white) blocks of oceanic crust represent the normal (reversed) polarity TRM acquired during original cooling of the oceanic crust ...
... The oceanic crust is the upper portion of the oceanic lithosphere forming at the ridge crest and being covered by an increasing thickness of oceanic sediments; the black (white) blocks of oceanic crust represent the normal (reversed) polarity TRM acquired during original cooling of the oceanic crust ...
Yukon Overview - Energy, Mines and Resources
... were riding on plates of oceanic crust that subducted eastward beneath the western margin of the continental plate. Some terranes that were caught up between the plates were moved or smeared along faults parallel to the continental margin. The interactions of tectonic plates that formed the Yukon (c ...
... were riding on plates of oceanic crust that subducted eastward beneath the western margin of the continental plate. Some terranes that were caught up between the plates were moved or smeared along faults parallel to the continental margin. The interactions of tectonic plates that formed the Yukon (c ...
Petrogenetic evolution of Uralian-Alaskan-type mafic
... Uralian-Alaskan-type mafic to ultramafic complexes form a narrow, 900 km long, N-Strending chain in the northern and central parts of the Ural orogenic belt. Characteristic features like their concentric lithologic zonation, the absence of orthopyroxene in the ultramafic rocks and platinum group ele ...
... Uralian-Alaskan-type mafic to ultramafic complexes form a narrow, 900 km long, N-Strending chain in the northern and central parts of the Ural orogenic belt. Characteristic features like their concentric lithologic zonation, the absence of orthopyroxene in the ultramafic rocks and platinum group ele ...
Geology and Geophysics (GEOS)
... Promote a broader understanding of deep time through an examination of life and environments during the Mesozoic, or "Age of Dinosaurs." Discussions and exercises will focus on major events and processes that shaped the physical environments of the Mesozoic, such as the formation and break up of con ...
... Promote a broader understanding of deep time through an examination of life and environments during the Mesozoic, or "Age of Dinosaurs." Discussions and exercises will focus on major events and processes that shaped the physical environments of the Mesozoic, such as the formation and break up of con ...
Mineral profile - British Geological Survey
... age. They are principally worked for nickel with cobalt as a by-product. The cobalt is contained within limonite and goethite as well as erythrite and asbolite. At deeper levels, weathering of ultramafic rocks is less intense and the nickeliferous mineral garnierite is formed. Serpentine-rich zones ...
... age. They are principally worked for nickel with cobalt as a by-product. The cobalt is contained within limonite and goethite as well as erythrite and asbolite. At deeper levels, weathering of ultramafic rocks is less intense and the nickeliferous mineral garnierite is formed. Serpentine-rich zones ...
The origin of metamorphic core complexes and detachment faults
... term these large-area low-angle normal faults 'detachment faults' mainly for historical reasons, as discussed by Davis & Lister (1988). In all of the core complexes, the upper plate (above the detachment fault) is intensely fractured. It has clearly been subjected to significant horizontal extension ...
... term these large-area low-angle normal faults 'detachment faults' mainly for historical reasons, as discussed by Davis & Lister (1988). In all of the core complexes, the upper plate (above the detachment fault) is intensely fractured. It has clearly been subjected to significant horizontal extension ...
SOIL MAP OF AFRICA SCALE 1 TO 5000000 Explanatory
... and climatological and phytogeographical documents were assembled. The hypothetical distribution of parent materials served as a theoretical framework for the first pedological sketch from which the first correlations and extrapolations were made. Each of thefivesuccessive approximations could be co ...
... and climatological and phytogeographical documents were assembled. The hypothetical distribution of parent materials served as a theoretical framework for the first pedological sketch from which the first correlations and extrapolations were made. Each of thefivesuccessive approximations could be co ...
USGS Professional Paper 1697 - Alaska Resources Library and
... and geographic names for major regions. The major features, continued from the Neogene are (1) a 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 p ...
... and geographic names for major regions. The major features, continued from the Neogene are (1) a 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 p ...
Reprint - Frederic MOUTHEREAU
... 2010). However, these data have never been integrated to propose a comprehensive scheme of the strain distribution over the whole collisional plate boundary. The Zagros foreland fold-thrust belt is particularly famous as the most prolific fold-thrust belt where the world's largest hydrocarbon reserve ...
... 2010). However, these data have never been integrated to propose a comprehensive scheme of the strain distribution over the whole collisional plate boundary. The Zagros foreland fold-thrust belt is particularly famous as the most prolific fold-thrust belt where the world's largest hydrocarbon reserve ...
Field Guide to the Punchbowl Fault Zone at Devil`s Punchbowl Los
... system. The Devil's Punchbowl is an area of moderate relief between the San Gabriel Mountains and Mojave Desert. The area was eroded to low relief in Pleistocene time and covered by piedmont alluvial fans after the Punchbowl fault became inactive. Recent uplift has rejuvenated the erosion that has d ...
... system. The Devil's Punchbowl is an area of moderate relief between the San Gabriel Mountains and Mojave Desert. The area was eroded to low relief in Pleistocene time and covered by piedmont alluvial fans after the Punchbowl fault became inactive. Recent uplift has rejuvenated the erosion that has d ...
PETROLOGY AND GEOCHEMISTRY OF THE WILDCAT GULCH
... syenite intrusions of the Iron Hill complex (570 Ma) that formed in an extensional continental environment. This study provides a petrological and geochemical characterization and assessment of the informally named Wildcat Gulch syenite to aid the placement of these syenitoid intrusions within the r ...
... syenite intrusions of the Iron Hill complex (570 Ma) that formed in an extensional continental environment. This study provides a petrological and geochemical characterization and assessment of the informally named Wildcat Gulch syenite to aid the placement of these syenitoid intrusions within the r ...
The rift-related mafic dyke complex of the Rohkunborri Nappe, Indre
... Nystuen 1985) of Late Proterozoic to Lower Cambrian sedimentary rocks within these thrust sheets have estab lished three informal units: a thick lower mainly fluviatile unit, a middle glacial unit (Varangian) and an upper fluviatile and shallow marine unit of Late Vendian to Early Cambrian age. In ...
... Nystuen 1985) of Late Proterozoic to Lower Cambrian sedimentary rocks within these thrust sheets have estab lished three informal units: a thick lower mainly fluviatile unit, a middle glacial unit (Varangian) and an upper fluviatile and shallow marine unit of Late Vendian to Early Cambrian age. In ...
Structure, Construction, and Emplacement of the Yosemite Valley
... flow. The plutons have steep, dominantly NE-‐striking magmatic foliations, some of which are discordant to contacts and record regional strain that contrasts with the regional strain field interpreted from ...
... flow. The plutons have steep, dominantly NE-‐striking magmatic foliations, some of which are discordant to contacts and record regional strain that contrasts with the regional strain field interpreted from ...
PDF
... Fig. 1. Maps showing (a) the tectonic setting of Japan and the location of the Ueno Basalt province, and (b) the geology of the Ueno Basalt province. In (a): NAP, North America plate; PAP, Pacific plate; ERP, Eurasia plate; PSP, Philippine Sea plate; bold continuous line, plate boundary; fine contin ...
... Fig. 1. Maps showing (a) the tectonic setting of Japan and the location of the Ueno Basalt province, and (b) the geology of the Ueno Basalt province. In (a): NAP, North America plate; PAP, Pacific plate; ERP, Eurasia plate; PSP, Philippine Sea plate; bold continuous line, plate boundary; fine contin ...
Cordierite in felsic igneous rocks: a synthesis
... Na20 + K20)], STSr/86Sri (> 0.7075), and glSo (> +10 %OSMOW).In these rocks, cordierite shows a wide range of distribution both relative to contacts with country rocks, and to contacts between internal facies in felsic igneous bodies. It also exhibits a variety of coexisting mineral assemblages and ...
... Na20 + K20)], STSr/86Sri (> 0.7075), and glSo (> +10 %OSMOW).In these rocks, cordierite shows a wide range of distribution both relative to contacts with country rocks, and to contacts between internal facies in felsic igneous bodies. It also exhibits a variety of coexisting mineral assemblages and ...
the orivesi granite batholith, southern central finland
... along the southern margin of the Central Finland Granitoid Complex (CFGC). It consists of the dominant Orivesi granite and of two minor components: a coarse-grained quartz-rich porphyritic granite (the Särkijärvi granite) and an aplite granite. No associated mafic components are found. The Orivesi g ...
... along the southern margin of the Central Finland Granitoid Complex (CFGC). It consists of the dominant Orivesi granite and of two minor components: a coarse-grained quartz-rich porphyritic granite (the Särkijärvi granite) and an aplite granite. No associated mafic components are found. The Orivesi g ...
Geology of Great Britain
The geology of Great Britain is renowned for its diversity. As a result of its eventful geological history, Great Britain shows a rich variety of landscapes across the constituent countries of England, Wales and Scotland. Rocks of almost all geological ages are represented at outcrop, from the Archaean onwards.