Brevard zone compared to Alpine root zones
1967; Yale University; Volume: 265; Issue: 4 Linguagem: Inglês
10.2475/ajs.265.4.241
ISSN1945-452X
AutoresB. C. Burchfiel, Jay Livingston,
Tópico(s)Geological formations and processes
ResumoThe Urseren zone of Switzerland is a long linear zone of deformed rocks paralleling the main structural trends in the Alps. This zone clearly is the root zone for the Helvetic nappes and is not a major strike-slip fault. The Pusteria-Insubric line in Austria also appears to be a root zone rather than a major strike-slip fault. Like the Urseren zone it is a long linear zone of deformed rocks, but unlike the Urseren zone it has undergone important late tectonic movements, which have strongly modified its root-zone characteristics. In both of these root zones, significant volumes of crustal material seem to have disappeared; this fact appears to demand a significant amount of crustal shortening. The Brevard zone in the southern Appalachians appears to have the characteristics of the linear root zones described from the Alps.
Referência(s)