Insights into the architecture and evolution of the southern and middle Urals from gravity and magnetic data
| Autor: | G. S. Kimbell, V.A. Shapiro, Mikhail K. Kaban, Conxi Ayala, Y.P. Menshikov, Axel Gerdes |
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| Přispěvatelé: | 1.1 GPS/GALILEO Earth Observation, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Mountain building in the Uralides Geophysical monograph Mountain Building in the Uralides: Pangea to the Present |
| Popis: | Magnetic, Precambrian crystalline basement is inferred to form a geophysically coherent block beneath the southwestern part of the Altaids which is thrust beneath the eastern side of the Uralides. To the west, magnetic basement of the East European Craton is separated from the western Palaeozoic arc terranes of the Uralides by a pre-Uralian terrane. Gravity and magnetic anomalies over the Uralides can be correlated with extensive belts of subduction-related (dense, magnetic) and late orogenic (low density, non-magnetic) plutons. The latter form two sub-parallel belts which coincide with interpreted suture zones, suggesting that transpressional reactivation of these sutures may have contributed to the initiation and distribution of such plutonism. The overall geometry of the plutonic markers suggests that an observed northward decrease in the age of geological events along the Uralide orogen may be due to initial docking of arcs and microcontinents in the south and their subsequent anticlockwise rotation. |
| Databáze: | OpenAIRE |
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