The gabbro-metagabbro association of the Southern Appalachian Piedmont

McSween, H. Y.; Sando, T. W.; Clark, Stuart; Harden, J. T.; Strange, E. A.

doi:10.2475/ajs.284.4-5.437

Cited by 24 publications

(18 citation statements)

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“…Previous mapping of the pluton (Taylor, 1982;Harden, 1984;Goldsmith et al, 1989) produced different areal extent and boundaries for the pluton, but the more recent work (this study; J.R. Butler unpublished data, 1994) agrees with the work of Goldsmith et al (1989) who extended the pluton much farther south than others. In the present study, the Farmington pluton includes all gabbroic rocks in and around the main pluton (Fig.…”

Section: Field Relations and Petrographysupporting

confidence: 88%

“…The two samples with high An contents are FG-110 (An=94) in this study, and 8-4-5 (An=84) (Harden 1984). A few other samples in this study were found to have a highly variable (rim to core) An content, despite an overall low average for the whole rock.…”

Section: Discussionmentioning

confidence: 49%

“…Highly anorthitic plagioclase-bearing rocks are rare in the study area and among all samples used in this study and those of Harden (1984), there are only two with high average An content (An>80) in contrast to the rest of the rocks (An=50-64). The two samples with high An contents are FG-110 (An=94) in this study, and 8-4-5 (An=84) (Harden 1984).…”

Section: Discussionmentioning

confidence: 80%

“…Examination of the Al z /TiO 2 ratios of clinopyroxene from the Farmington gabbroic rocks shows that the data are inconclusive regarding either setting; a similar examination of ratios of Al z versus TiO 2 of pyroxene from the Concord plutonic suite (McSween et al, 1984;this study) shows that the suite has a steeper slope than those of oceanic cumulates, but not as steep as those of arc-related cumulates (Loucks 1990;Tsai et al, 2000). Based on the An and Fo data (Esawi, 1997) of the gabbroic rocks of the Farmington pluton, the rocks are best described as transitional, due to the fact that the Fo content spans both domains (Beard, 1986;Tsai et al, 2000).…”

Section: Tectonic Settingmentioning

confidence: 93%

“…1). Based mainly on Rb-Sr whole rock (Olsen et al, 1983) and Sm-Nd mineral data (McSween et al, 1984), the ages of most of the plutons cluster around 400 Ma with a few exceptions such as the Barber pluton which has an age of 479AE24 (McSween et al, 1984). Further details about the geology, names, and geographical locations of the plutons of the Concord plutonic suite can be found in McSween et al (1991).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Evidence from the Farmington pluton for early Devonian subduction-related magmatism in the Carolina zone of central North Carolina

Esawi

2004

Journal of Geodynamics

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Section: Field Relations and Petrographysupporting

confidence: 88%

Section: Discussionmentioning

confidence: 49%

Section: Discussionmentioning

confidence: 80%

Section: Tectonic Settingmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evidence from the Farmington pluton for early Devonian subduction-related magmatism in the Carolina zone of central North Carolina

Esawi

2004

Journal of Geodynamics

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The Northern Charlotte belt North Carolina and South Carolina: A deformed composite batholith

Wilson

Jones

1986

Geological Journal

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The Charlotte belt in North Carolina and South Carolina, U.S.A. is characterized by numerous plutons with granitic to gabbroic composition that have intruded gneiss, schist, metavolcanic rocks, and metamorphosed mafic complexes (basalt, gabbro, and ultramafic rocks). The exposed rock constitutes a composite batholith which contains three superunits: (1) the Old Plutonic (metaquartz diorite, metagranodiorite, and metagabbro) approximately 550 my old; (2) the Concord-Salisbury (gabbro and granodiorite) approximately 400 my old; (3) the Landis ('big feldspar') granite approximately 300 my old. Geophysical and geologic studies suggest small bodies of granodiorite and mafic complexes intruding metavolcanic rocks, schist, and gneiss form the upper level of the batholith; a thick metagabbro sill penetrated by gabbro stocks and underlain by poikilitic gabbro and small bodies of syenite form the middle level; and a complex of metaquartz diorite and metagranodiorite intruded by Landis granites form the lowest level. Outcrop patterns and structural profiles based on gravity suggest the batholith forms an east-dipping monocline. The bimodal suite of gabbro and granodiorite plutons suggest a tensional tectonic environment -400 my ago, and negates subduction as the only mode of formation for the batholith.

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The mafic and ultramafic rocks of the Mocksville complex of Central North Carolina: Petrogenetic and tectonic implications

Esawi

2011

Miner Petrol

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The gabbro-metagabbro association of the Southern Appalachian Piedmont

Cited by 24 publications

References 0 publications

Evidence from the Farmington pluton for early Devonian subduction-related magmatism in the Carolina zone of central North Carolina

Evidence from the Farmington pluton for early Devonian subduction-related magmatism in the Carolina zone of central North Carolina

The Northern Charlotte belt North Carolina and South Carolina: A deformed composite batholith

The mafic and ultramafic rocks of the Mocksville complex of Central North Carolina: Petrogenetic and tectonic implications

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