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Showing 1 to 11 of 11 for “"Carolina Slate Belt"”.
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Effects of metamorphism and structure on aeromagnetic anomalies over the Carolina slate belt near Roxboro, North Carolina
… deformed stratigraphic units near Roxboro, North Carolina is complicated by effects of regional metamorphism on rock magnetism. Anomaly amplitudes diminish markedly to the WNW near the onset of amphibolite facies. Thus, for similar lithologic mixes in this area, at higher metamorphic grades, …
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Geology of the Meherrin, Virginia area: tracing formations across the staurolite isograd from the Carolina slate belt into the Charlotte belt
… mapping along the northern terminus of the Carolina slate belt in the area of Meherrin, Virginia extends the previously known limits of the Hyco and Aaron Formations from the greenschist metamorphic facies Carolina slate belt northward across a staurolite isograd into the amphibolite …
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An unconformity in the Carolina slate belt of central North Carolina: new evidence for the areal extent of the ca. 600 Ma Virgilina deformation
… N. C. area can be extended into central North Carolina. The volcanic stratigraphy is composed of the Hyco, Aaron and Uwharrie Formations, all of which have been subjected to greenschist facies metamorphism. The oldest map unit, the Hyco Formation, consists of intermediate(?) lava flows, …
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Tectonic and geologic development of the Charlotte belt south central Virginia Piedmont
… Virginia Piedmont is primarily in the Charlotte belt, but includes a portion of the adjacent Carolina slate belt. Both the Charlotte belt and the Carolina slate belt are major components of the volcanic arc, Carolinia, that collided with Laurentia during the Late Cambrian to Late Ordovician …
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Geology of the late precambrian Flat River complex and associated volcanic rocks near Durham, North Carolina
… of zircons from the Flat River Complex in the Carolina "slate" belt north of Durham, N.C. shows this intrusive complex to be 650 ± m.y. old. Modal analyses of granophyric groundmass compared to experimental data, the presence of vent breccias and related pyroclastic deposits, and consideration …
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Analysis of seismic reflection data over the Sanford Triassic Basin, Chatham and Lee Counties, North Carolina
… margin of the Sanford Triassic Basin in North Carolina were acquired by Chevron, Inc. in 1972. These data enabled a comparison of the relative effectiveness of dynamite and vibroseis sources to be made. A comparison of 3-fold and 12-fold dynamite data, as well as 24-fold vibroseis data with a …
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Geologic History and the Timing of Mineralization at the Haile Gold Mine
… were driven by volcanism at a time when the Carolina Slate Belt, which is exotic to North America, was still in a peri-Gondwana location. New constraints interpreted to reflect the accretion of the Carolina Slate Belt determined from 40Ar-39Ar measurements on two biotite samples collected …
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Design, performance, and analysis of a multi-level air permeability test
… media. The field site, located in the Carolina Slate Belt within the physiographic region known as the Piedmont, is comprised of alternating layers of different soil types of varying kair, including thin bands of clay, silt, and sand. The pneumatic test consisted of one multi-level …
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A study of the vein copper mineralization of the Virgilina district, Virginia and North Carolina
The Virgilina District, which occurs in the Carolina Slate Belt of Virginia and North Carolina, produced over 300,000 tons of copper and significant amounts of silver and gold between 1852 and 1916. A detailed examination of the ore and gangue mineralization from the district reveals that the ores …
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Modeling Intermittent and Perennial Headwater Stream Origins In North Carolina.
… (DEM) such as drainage area and slope. The North Carolina Division of Water Quality (NC DWQ) conducted an extensive headwater stream modeling study, and mapped intermittent and perennial channel origins in the field in the North Carolina Slate Belt ecoregion. The NC DWQ study developed a model …