Brookneal Zone

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Journal Article
Journal: Geology
Published: 01 May 1989
Geology (1989) 17 (5): 391–394.
...Alexander E. Gates; Linda C. S. Gundersen Abstract A positive correlation exists among surface gamma radiation, uranium concentration, and the angles between C and S bands in mylonite and radon in the soils overlying the Brookneal zone of the southwest Virginia Piedmont. Part of the Brookneal zone...
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.224.01.16
EISBN: 9781862394728
... Abstract Strain and vorticity analysis of two Late Palaeozoic high-strain zones from the southern Appalachian Piedmont indicates that these zones experienced general shear transpression with a monoclinic to triclinic symmetry. Granitic rocks in the Brookneal high-strain zone from...
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Series: GSA Field Guide
Published: 01 January 2015
DOI: 10.1130/2015.0040(02)
EISBN: 9780813756400
... are separated by regionally significant faults and high-strain zones. From east to west these include: the Hylas, Spotsylvania, Chopawamsic, Brookneal/Shores, and Mountain Run zones (Figs. 1 and 2 ). Some zones form pronounced geophysical lineaments ( Neuschel, 1970 ; Zietz et al., 1977 ). Individual high...
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Series: GSA Field Guide
Published: 01 January 2012
DOI: 10.1130/2012.0029(10)
EISBN: 9780813756295
... zone; SBF—Shores mélange/Brookneal high-strain zone. Modified from numerous sources. Figure 3. Schematic stratigraphic diagram of the Chopawamsic and Goochland terranes. The Chopawamsic terrane is a composite terrane of metamorphosed volcanic, plutonic, and sedimentary rocks that forms...
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Journal Article
Journal: Economic Geology
Published: 01 March 2014
Economic Geology (2014) 109 (2): 513–530.
...), slightly younger than the Leatherwood age. Samples of mineralized orthogneiss and mineralized amphibolite give similar 206 Pb/ 207 Pb ages of 419 ± 19 and 426 ± 21 Ma, respectively. A biotite gneiss unit that underlies the mineralized zone yields a 206 Pb/ 207 Pb age of 415 ± 21 Ma, indicating...
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Journal Article
Journal: Geology
Published: 01 March 2003
Geology (2003) 31 (3): 215–218.
... study of the allochthon provides a startling new perspective on the western Piedmont zone. Our data, in conjunction with a previously obtained date from metaclastic rocks of the allochthon ( Lanzirotti and Hanson, 1997 ), indicate that the allochthon was involved in an Early Cambrian tectonothermal...
... to the east of the Danville Triassic basin, also known as the volcanic and plutonic sequence and the Charlotte terrane of North Carolina ( Henika, 1998 ). The Milton terrane is bounded on the east by the Central Piedmont shear zone (Hyco fault) and to the west by the Danville Triassic basin. The western...
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