Steep crustal-scale faults, having their origins in the Late Archean and Early Proterozoic and trending NE-SW, which define the fundamental block lithospheric structure of the North American craton, are seen from geological and geophysical evidence to continue far into the interior of the Late Prote...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Lyatsky, Henry V. (VerfasserIn), Lyatsky, Vadim B. (VerfasserIn)
Format:	Elektronisch E-Book
Sprache:	English
Veröffentlicht:	Berlin, Heidelberg Springer Berlin Heidelberg 1999
Schriftenreihe:	Lecture Notes in Earth Sciences 86
Schlagworte:	Earth Sciences Geology Sedimentology Geophysics/Geodesy Earth sciences Geophysics Miogeosynklinale Zone Tektonik Orogenese Rocky Mountains
Online-Zugang:	BTU01 Volltext
Zusammenfassung:	Steep crustal-scale faults, having their origins in the Late Archean and Early Proterozoic and trending NE-SW, which define the fundamental block lithospheric structure of the North American craton, are seen from geological and geophysical evidence to continue far into the interior of the Late Proterozoic-Phanerozoic Canadian Cordilleran mobile megabelt. This suggests that variously reworked ex-cratonic basement blocks underlie much of the Cordillera. The western edge of the modern craton is probably near the Rocky Mountain-Omineca belt boundary, where Cordilleran tectonic reworking of the crystalline crust is first encountered; the Rocky Mountain fold-and-thrust belt on the east side of the Cordillera is evidently rootless and overlies the undisturbed cratonic basement. Phanerozoic differences between the Cordilleran tectonic belts, resulting from a long, dissimilar, multi-cycle history of waxing and waning orogenesis apparent from the rock record, lie chiefly in the degree of indigenous tectonic remobilization and reworking of the ancient crust
Beschreibung:	1 Online-Ressource (XX, 388 p. 84 illus)
ISBN:	9783540486930
DOI:	10.1007/BFb0017571