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Series: GSA Field Guides
Published: 29 March 2018
DOI: 10.1130/2018.0050(08)
EISBN: 9780813756509
... ABSTRACT The eastern Great Smoky Mountains basement complex consists of the following components: (1) ca. 1350–1325 Ma orthogneiss and mafic xenoliths that represent some of the oldest crust in Appalachian Grenville massifs (similar to “pre-Grenville” basement components in the Adirondack...
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Journal Article
Journal: Geosphere
Published: 05 February 2018
Geosphere (2018) 14 (2): 835-860.
...-tectonic and post-tectonic intrusions and faulted against granitic orthogneiss. U-Pb zircon results show that (1) maximum depositional ages of paragneisses are Silurian to Early Devonian (432–390 Ma); (2) detrital zircons from quartzose calc-silicate paragneisses show a broad age peak from 1900 to 1000 Ma...
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Journal Article
Journal: Lithosphere
Published: 10 January 2018
Lithosphere (2018) 10 (2): 217-238.
... flow and heterogeneous deformation during continental subduction. The section reveals layers of migmatitic granofels interlayered with anatectic banded orthogneiss and other rock types within a single deformation fabric related to the prograde metamorphism. Granofels layers represent high strain zones...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP451.10
EISBN: 9781786203328
... of relationship to the subsurface composition seems to be a result of the low concentrations in groundwater. With respect to uranium in groundwater, there is a mixed situation: on the one hand, high uranium concentrations in groundwater can be observed in the Alps in regions with uranium bearing orthogneisses...
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