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Showing 1 to 20 of 37 for “"country rock"”.
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Grievous Angel: Gram Parsons and the country rock movement
The country rock movement emerged in Southern California in the mid-1960s and was comprised of musicians who, through diverse musical practices and conceptual means, sought to fuse elements of country music with other popular genres. Developing amidst the social and political turmoil that defined …
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The structural and engineering geology of the Country Rock at Finsch Mine
… relevant information to build a database for the country rock. The country rock is comprised of the ~2.5 Ga sediments of the Griqualand West Basin: the banded ironstones and carbonates of the Ghaap Group. A stratigraphic column has been produced that correlates the country rock at Finsch Mine with …
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The oxygen isotope composition of the country rock of the Koegel Fontein igneous complex
… and melting of previously 18O-depleted rock (Curtis et al., 2013; Olianti and Harris, 2018). This thesis investigates the oxygen isotope composition of the country rock of the Koegel Fontein Complex, which consists of Namaqua-Natal Belt granulite facies rock and minor remnants of …
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When The Counterculture Picked Up A Southern Twang: A Cultural Analysis Of Late Sixties And Early Seventies Country Rock Movement
… is a cultural analysis of California-based country-rock movement in the late sixties and early seventies. Country rock is a hybrid music genre emerged during this period. Musicians active in the country-rock movement were mostly counterculture hippies, and they adopted country music to serve …
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Petrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarctica
… by ijolite. The complex and its immediate country rock was intruded by numerous dykes. A small proportion of these dykes are peralkaline syenite and microgranite, and these are found only to intrude the nepheline syenite and not the country rock. The presence of peralkaline granite dykes …
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Fluid-rock interaction on alpine-type ultramafic rocks from the Norwegian Caledonides
Alpine-type ultramafic rocks are tectonically emplaced from mantle into the crust. Their petrological and structural alterations occur during their path from deep-seated sources to their crustal emplacement. Therefore, these rocks are suitable for the study of fluid-rock interaction during the syn- …
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Petrology of the Mount Airy granite
… on the Mount Airy granite and enclosing country rock. The pluton.is unzoned, simply intruded, and composed of a medium-grained, white granite, containing 33-41% plagioclase (An₁₀₋₂₀), 27-35% quartz, 20-28% alkali feldspar (Or₉₀), and 3-13% color index minerals, primarily biotite, …
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The Effects of Contact Metamorphism by Diabase Intrusion on the Carbon and Sulfur Bearing Phases in the Siltstones of the Culpeper Basin
… extinction events. The intrusion of magma into country rock has been hypothesized to facilitate the release of carbon and sulfur bearing volatiles and has been proposed as one of mechanisms that drove these mass extinctions. In this study I examine a dike of the Central Atlantic Magmatic …
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Spatially controlled Fe isotope variations at Torres Del Paine
… non-traditional stable isotope ratios in igneous rocks with differentiation index. We present new Fe isotope data for the Torres del Paine igneous complex in southern Chile. The multi-composition pluton consists of a 1.5 km vertical exposure of homogenous granite overlying a contemporaneous and …
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On Ultra-High Temperature Metamorphism in the Mid-Lower Crust
… temperature (UHT) metamorphic processes and country rock-magma interaction due to mappable units of hybrid igneous rocks and the presence of large, partially melted, politic "emery" xenoliths. Previous attempts to understand the formation of the UHT xenoliths in the Cortlandt have provided …
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A low - δ 18 O intrusive breccia from the Koegel Fontein complex, South Africa
… Fontein complex, 350 km north of Cape Town, has rocks with abnormally low δ 18 O values, as low as - 5.2 ‰. The rocks with the lowest δ 18 O values belong to an intrusive breccia and have a fine - grained, black matrix. The silica content of these breccia rocks ranges between 44 - 68 wt %, their …
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Mineralogy and Geochemistry of the Dumper Dew Pegmatite, Oxford County, Maine
… with its intrusion in lowmetamorphic grade country rock suggests rapid crystallization. Northern portions of the wall zone and intermediate zones have undergone hydrothermal alteration by the migration of late-stage fluids. The pegmatite hosts a diverse assemblage of rare-element mineral …
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Petrogenesis of the phase 1 gabbro-diorite of the Miocene Mt Perkins Pluton, northwest Arizona: Implications for the role of mantle-derived mafic magmas in calc-alkaline magma evolution
… as a series of four discrete magma pulses into a country rock of Precambrian orthogneiss. Phase 1 is a gabbro-diorite containing four rock groups: olivine-clinopyroxene cumulates, hornblende-plagioclase cumulates, homblende gabbro, and quartz diorite. Stage one of phases 2 and 3 evolved by a …
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A study of the kimberlites, diamonds and associated rocks and minerals from the monastery mine, South Africa. Volume 1: Text
… weathered. The breccia kimberlite hosts abundant country rock fragments in a soft serpentinous matrix. It is an opaque oxide-rich phlogopite serpentine kimberlite breccia. The precursor kimberlite dyke associated with the diatreme is an opaque oxide-rich calcite kimberlite. The ultramafic …
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Geology and Structure of Kodachrome Basin State Reserve and Vicinity, Kane and Garfield Counties, Utah
… within the study area. Mapping and study of the rock units of the Carmel, Entrada, Henrieville, and Tropic-Dakota formations and subsequent comparison with the interpretation of the depositional environments by others working in the same formations in the surrounding region suggest the following …
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Anorthositic sills of the southern Adirondack Mountains of New York state
… sills and is related to the Oregon Dome. Whole rock data show that the gabbroic anorthosite and the rocks of the Thirteenth Lake Dome have a differentiation trend of minor iron enrichment, while the Wells gabbro, Oregon Dome and Snowy Mountain Dome have a trend of more extreme iron enrichment. …
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Effects of Hurricane Fault Architecture on Groundwater Flow in the Timpoweap Canyon of Southwestern, Utah
… features of fault zones include undamaged country rock, the damage zone, and the core zone. Fault cores generally have low porosity and permeability, and often act as a barrier to groundwater flow. The damage zone, by contrast, consists of small faults and fracture networks, which can act …
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Arc magmatism at different crustal levels, North Cascades, WA
… and solidified without major assimilation of country rock. The Seven- Fingered Jack intrusive complex, emplaced around ~20-25 km, preserves a similar record of intrusion between ca. 91.8 Ma and 90.5 Ma. Significant compositional variability and antecrystic zircons suggest that the …
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Deformation in the striped rock pluton, southwest Virginia
The Striped Rock pluton of the late-Proterozoic Crossnore Plutonic-Volcanic suite is located beneath the Fries Thrust zone in the Blue Ridge province of southwest Virginia. The multiphase granite pluton has been affected by episodes of brittle and crystal plastic deformation at both the microscopic …
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Petrogenesis of the Spruce Pine pegmatites, North Carolina
… plutons before intruding into the surrounding country rock. Major and trace element data from muscovite plotted on a map of the area reveal a systematic regional trend where either the highest or lowest concentrations occur along a central northeast-trending belt in the Spruce Pine district, …
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