Geodetic determination of relative plate motion and crustal deformation across the Scotia-South America plate boundary in eastern Tierra del Fuego

2003 ◽  
Vol 4 (9) ◽  
pp. n/a-n/a ◽  
Author(s):  
R. Smalley ◽  
E. Kendrick ◽  
M. G. Bevis ◽  
I. W. D. Dalziel ◽  
F. Taylor ◽  
...  
Keyword(s):  
South America ◽  
Crustal Deformation ◽  
Plate Boundary ◽  
Tierra Del Fuego ◽  
Plate Motion ◽  
Relative Plate Motion

scholarly journals GPS-determination of along-strike variation in Cascadia margin kinematics: Implications for relative plate motion, subduction zone coupling, and permanent deformation

Tectonics ◽  
2001 ◽  
Vol 20 (2) ◽  
pp. 161-176 ◽  
Author(s):  
M. Meghan Miller ◽  
Daniel J. Johnson ◽  
Charles M. Rubin ◽  
Herb Dragert ◽  
Kelin Wang ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Permanent Deformation ◽  
Plate Motion ◽  
Cascadia Margin ◽  
Relative Plate Motion

scholarly journals The Wandel Hav Strike-Slip Mobile Belt – A Mesozoic plate boundary in North Greenland

2001 ◽  
Vol 48 ◽  
pp. 149-158
Author(s):  
E. Håkansson ◽  
S.A.S. Pedersen
Keyword(s):  
Plate Boundary ◽  
Strike Slip ◽  
Seafloor Spreading ◽  
Plate Motion ◽  
Mobile Belt ◽  
Eurasian Plate ◽  
Late Palaeozoic ◽  
Break Up ◽  
Relative Plate Motion ◽  
North Greenland

The historical ‘de Geer Line’ between Svalbard and Greenland is shown to have had a Mesozoic precursor now residing well within the continental Greenland plate, where it coincides with the Wandel Hav Strike-Slip Mobile Belt. Well-constrained phases in relative plate motion reflected in the mobile belt are discernible back to the mid Jurassic, with more obscure phases dating even further back. There is evidence that the Wandel Hav Strike-Slip Mobile Belt may have been formed already in Late Palaeozoic time during onset of Pangean break-up; evidence for strike-slip movements of this age is, however, largely circumstantial, due to severe overprinting during the later phases. Wrench tectonics along the ‘fossil’ plate boundary culminated around the Cretaceous – Palaeogene boundary in the major right-lateral, transpressional Kronprins Christian Land Orogeny. Thus, the Wandel Hav Strike-Slip Mobile Belt may constitute the geological/structural expression of the Mesozoic Laurentian – Eurasian plate boundary all the way up to initiation of actual seafloor spreading at chron 24 in Palaeogene time.

scholarly journals The Crustal Dynamics Project

1988 ◽  
Vol 129 ◽  
pp. 337-338
Author(s):  
Robert J. Coates
Keyword(s):  
North American ◽  
Plate Boundary ◽  
Plate Motion ◽  
The North ◽  
Long Baseline ◽  
Regional Deformation ◽  
Plate Stability ◽  
Crustal Dynamics ◽  
The Stability ◽  
Relative Plate Motion

The Crustal Dynamics Project has been developing, deploying, and operating very-long-baseline interferometry (VLBI) systems and satellite laser ranging (SLR) systems for highly accurate geodetic measurements of global plate motion, plate stability, regional crustal deformation, and earth rotation/polar motion. Over the past 10 years, the measurement accuracies of these systems have been improved by a factor of 10 to the cm level. Plans are to continue these developments to reach mm level accuracies. The present deployment of the VLBI systems is primarily in the Northern Hemisphere. This network has produced measurements of the relative plate motion between the North American, Eurasian, and Pacific plates; the stability of the same plates; and the regional deformation at the North American/Pacific plate boundary in California and Alaska.

Fault evolution and strain partitioning within deforming continents

2015 ◽  
Author(s):  
◽  
Jiyang Ye
Keyword(s):  
Southern California ◽  
Mainland China ◽  
Plate Boundary ◽  
Plate Motion ◽  
Fault System ◽  
Strain Rates ◽  
Strain Partitioning ◽  
Boundary Fault ◽  
Fault Evolution ◽  
Relative Plate Motion

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Diffuse deformation within continents and over broad plate boundary zones deviates from the prediction of plate tectonics theory. Some of the deforming continents are now well delineated by space geodetic measurements, but the cause of such diffuse deformation remains poorly understood. My Ph.D. research focuses on two regions: 1) Fault evolution and Strain partitioning in Southern California: High-precision GPS measurements have enabled kinematic modeling of the present-day strain partitioning between these faults, but the causes of such strain partitioning and fault evolution remain uncertain. Using a three-dimensional viscoelasto-plastic finite element model, I have explored how the plate boundary fault system evolves to accommodate the relative plate motion in Southern California. My results show that, when the plate boundary faults are not optimally orientated to accommodate the relative plate motion, new faults will be initiated. In particular, the Big Bend of the San Andreas Fault, which is the main plate boundary fault, impedes the relative plate motion, thus forces the development of a system of secondary faults. 2) Active strain rates of crustal deformation in mainland China: In the past decades Chinese scientists and international teams have measured GPS velocities at more than a thousand sites in mainland China, allowing calculation of detailed spatial distribution of the crustal strain rates. Using the latest GPS data, I have calculated strain rates in different tectonic provinces in China and compared them with neotectonic data. I have also calculated strain rates using earthquakes and geological fault slip rates. The differences of strain rates derived from different data sets show the time-scale dependence of strain rates. Comparing GPS strain rates with seismic moment release patterns illustrates the limitations of using earthquake catalog for earthquake hazard analysis.

The CASA'93 GPS campaign for crustal deformation research along the South Caribbean plate boundary

1995 ◽  
Vol 20 (2) ◽  
pp. 129-144 ◽  
Author(s):  
H. Drewes ◽  
K. Kaniuth ◽  
K. Stuber ◽  
H. Tremel ◽  
H.-G. Kahle ◽  
...  
Keyword(s):  
Crustal Deformation ◽  
Plate Boundary ◽  
Caribbean Plate ◽  
The South
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