Geologic map of the South Boston 30 X 60 minute quadrangle, Virginia and North Carolina:

This 1:100,000-scale geologic map of the South Boston 30' × 60' quadrangle, Virginia and North Carolina, provides geologic information for the Piedmont along the I–85 and U.S. Route 58 corridors and in the Roanoke River watershed, which includes the John H. Kerr Reservoir and Lake Gaston....

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Körperschaft: Geological Survey (U.S.) International Symposium (VerfasserIn)
Weitere Verfasser: Horton, J. Wright Jr (HerausgeberIn)
Format: Elektronisch Karte
Sprache:English
Veröffentlicht: [Reston, Va.] U.S. Department of the Interior, U.S. Geological Survey 2022
Schriftenreihe:Scientific investigations map
Schlagworte:
Online-Zugang:Volltext
Zusammenfassung:This 1:100,000-scale geologic map of the South Boston 30' × 60' quadrangle, Virginia and North Carolina, provides geologic information for the Piedmont along the I–85 and U.S. Route 58 corridors and in the Roanoke River watershed, which includes the John H. Kerr Reservoir and Lake Gaston. The Raleigh terrane (located on the eastern side of the map) contains Neoproterozoic to early Paleozoic(?) polydeformed, amphibolite-facies gneisses and schists. The Carolina slate belt of the Carolina terrane (located in the central part of the map) contains Neoproterozoic metavolcanic and metasedimentary rocks at greenschist facies. Although locally complicated, the slate-belt structure mapped across the South Boston map area is generally a broad, complex anticlinorium of the Hyco Formation (here called the Chase City anticlinorium) and is flanked to the west and east by synclinoria, which are cored by the overlying Aaron and Virgilina Formations. The western flank of the Carolina terrane (located in the western-central part of the map) contains similar rocks at higher metamorphic grade. This terrane includes epidote-amphibolite-facies to amphibolite-facies gneisses of the Neoproterozoic Country Line complex, which extends north-northeastward across the map. The Milton terrane (located on the western side of the map) contains Ordovician amphibolite-facies metavolcanic and metasedimentary gneisses of the Cunningham complex.
Beschreibung:Relief durch Konturen dargestellt
Enthält einen Querschnitt, eine Lagekarte und ein Verzeichnis der Vierecke im Maßstab 1:24.000.
Beschreibung:1 Online-Ressource color + Pamphlet (VI, 46 Seiten)

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