Upper mantle reflector structure and origin beneath the Scottish Caledonides
Article Abstract:
Neoproterozoic events associated with rifting of the Laurentia-Baltica supercontinent may be responsible for the mantle reflector structure beneath the Scottish Caledonides. The mantle has two distinct discontinuous surfaces consisting of a steep, downward antiform-synform pair below the West Orkney basin and the Faeroe-Shetland basin with a suspected zone of structural disruption in between. The surfaces were probably once continuous and may have been deformed by crustal extension and/or east-west zone of upper mantle shear that created the disrupted zone at the crust.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1995
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A dual doubly vergent orogen in the Banda Arc continent-arc collision zone as observed on deep seismic reflection profiles
Article Abstract:
Numerical modeling of the double vergent orogenic belts in the Banda Arc, Indonesia, indicates a northward transfer of the mantle subduction zone, or a northward translation of crustal thrusts over a lower crustal detachment. A period of igneous activity was followed by a cessation of activity and the uplifting of the accretionary Outer Banda Arc. Reflectors below the northern margin of the arc dip southward, and act as a backstop to the accretionary complex.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1996
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Does the Great Glen fault really disrupt Moho and upper mantle structure?
Article Abstract:
The Great Glen strike-slip fault infringes the crust and upper layer that results in the Moho step or fracture. This has become a feature of the British Isles. Research shows that the fracture is prepared by a keel that emerges on the Moho discontinuity under the fault. Beneath the keel is a mantle image that is blocked by a downward progression in the fault structure.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
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