Kinematic evolution of the lower plate during intracontinental subduction: an example from the Scandinavian Caledonides
Article Abstract:
Geophysical data coupled with pressure-temperature-time data help to develop a model for the kinematic evolution of the Scandinavian Caledonides collisional orogenic belt. It suggests that the early collision between the Baltic and Laurentian plates led to an intracontinental subduction of at least 150 km of Baltic continental crust to a depth of 100 km. A two-phase process of thrusting and imbrication of the Baltic crust resulted in the extrusion of much of the subducted crust from the subduction zone. Later phases of collision involved direct interaction between the two plates.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Temporal variations in latest quaternary slip across the Australian-Pacific plate boundary, Northeastern South Island, New Zealand
Article Abstract:
Variations in slip rates of faults in the Alpine shear system in northeastern South Island, New Zealand occured inthe late Quaternary. Estimates of surface age, the oldest being 15-20 ka, with displacements of up to 400-600 m, were made. While lateral fault-slip rates during the late Holocene were less than half the long-term average, the sums ofthese rates over a 15-5 ka interval exceed the plate motion, suggesting that activity across the plate boundary is episodic. An interval of 15-20 kyr is needed to even out the implied 5 kyr intervals.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
An active, deep marine strike-slip along the North Anatolian fault in Turkey
Article Abstract:
The Tekirdag depression in the Marmara Sea is an active strike-slip basin along the North Anatolian fault. The basin is thought to form along a releasing bend of the strike-slip fault according to new seismic reflection data and geological studies. The slope-forming normal fault connects to the North Anatolian fault, suggesting that the basin is detached from its substratum.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Distribution of trace elements during breakdown of mantle garnet: an examplefrom Zabargad. Distinct site preferences for heavy and light REE in amphibole and the prediction of (super Amph/L)D(sub REE)
- Abstracts: Geometry and kinematic evolution of passive roof duplexes deduced from crosssection balancing: example from the foreland thrust system of the southern Bolivian Subandean zone
- Abstracts: Erosional processes as a control on the structural evolution of an actively deforming fold and thrust belt: an example from the Pamir-Tien Shan region, central Asia
- Abstracts: Rules of thumb for predation assessment: predictions from a dynamic model. The effect of wolf predation and snow cover on musk-ox group size
- Abstracts: Convection and crystal settling in sills. Two-stage contamination during crustal assimilation: isotopic evidence from volcanic rocks in eastern Nevada