scholarly journals Upper mantle structure of the southern Arabian margin: Insights from teleseismic tomography

Geosphere ◽  
2015 ◽  
Vol 11 (5) ◽  
pp. 1262-1278 ◽  
Author(s):  
Félicie Korostelev ◽  
Sylvie Leroy ◽  
Derek Keir ◽  
Abdulhakim Ahmed ◽  
Lapo Boschi ◽  
...  
Keyword(s):  
Upper Mantle ◽  
Mantle Structure ◽  
Teleseismic Tomography ◽  
Upper Mantle Structure

scholarly journals Upper mantle structure around the Trans-European Suture Zone obtained by teleseismic tomography

2014 ◽  
Vol 6 (2) ◽  
pp. 1723-1763 ◽  
Author(s):  
I. Janutyte ◽  
M. Majdanski ◽  
P. H. Voss ◽  
E. Kozlovskaya ◽  
PASSEQ Working Group
Keyword(s):  
Upper Mantle ◽  
Western Europe ◽  
Velocity Model ◽  
Suture Zone ◽  
P Wave ◽  
Mantle Structure ◽  
The West ◽  
Lower Velocity ◽  
Teleseismic Tomography ◽  
Upper Mantle Structure

Abstract. The presented study aims to resolve the upper mantle structure around the Trans-European Suture Zone (TESZ) which is the major tectonic boundary in Europe. The data of 183 temporary and permanent seismic stations operated during the period of the PASsive Seismic Experiment PASSEQ 2006–2008 within the study area from Germany to Lithuania was used to compile the dataset of manually picked 6008 top quality arrivals of P waves from teleseismic earthquakes. We used the non-linear teleseismic tomography algorithm TELINV to perform the inversions. As a result, we obtain a model of P wave velocity variations up to about ±3% compared to the IASP91 velocity model in the upper mantle around the TESZ. The higher velocities to the east of the TESZ correspond to the older East European Craton (EEC), while the lower velocities to the west of the TESZ correspond to younger Western Europe. We find that the seismic lithosphere-asthenosphere boundary (LAB) is more distinct beneath the Phanerozoic part of Europe than beneath the Precambrian part. To the west of the TESZ beneath the eastern part of the Bohemian Massif, the Sudetes Mountains and the Eger Rift the negative anomalies are observed from the depth of at least 70 km, while under the Variscides the average depth of the seismic LAB is about 100 km. We do not observe the seismic LAB beneath the EEC, but beneath Lithuania we find the thickest lithosphere of about 300 km or more. Beneath the TESZ the asthenosphere is at a depth of 150–180 km, which is an intermediate value between that of the EEC and Western Europe. The results imply that the seismic LAB in the northern part of the TESZ is of a shape of a ramp dipping to the NE direction. In the southern part of the TESZ the LAB is shallower, most probably due to younger tectonic settings. In the northern part of the TESZ we do not recognize any clear contact between Phanerozoic and Proterozoic Europe, but further to the south we may refer to a sharp and steep contact on the eastern edge of the TESZ. Moreover, beneath Lithuania at the depth of 120–150 km we observe the lower velocity area following the boundary of the proposed palaeosubduction zone.

Crustal and upper mantle structure beneath the Corinth rift (Greece) from a teleseismic tomography study

2000 ◽  
Vol 105 (B12) ◽  
pp. 28159-28171 ◽  
Author(s):  
Christel Tiberi ◽  
Hélène Lyon-Caen ◽  
Denis Hatzfeld ◽  
Ulrich Achauer ◽  
E. Karagianni ◽  
...  
Keyword(s):  
Upper Mantle ◽  
Mantle Structure ◽  
Teleseismic Tomography ◽  
Upper Mantle Structure

Teleseismic tomography reveals no signature of the Dead Sea Transform in the upper mantle structure

2006 ◽  
Vol 252 (1-2) ◽  
pp. 189-200 ◽  
Author(s):  
Ivan Koulakov ◽  
Stephan V. Sobolev ◽  
Michael Weber ◽  
Sergey Oreshin ◽  
Kurt Wylegalla ◽  
...  
Keyword(s):  
Upper Mantle ◽  
Dead Sea ◽  
Mantle Structure ◽  
Dead Sea Transform ◽  
Teleseismic Tomography ◽  
Upper Mantle Structure ◽  
The Dead

scholarly journals Upper mantle structure around the Trans-European Suture Zone obtained by teleseismic tomography

Solid Earth ◽  
2015 ◽  
Vol 6 (1) ◽  
pp. 73-91 ◽  
Author(s):  
I. Janutyte ◽  
M. Majdanski ◽  
P. H. Voss ◽  
E. Kozlovskaya ◽  
Keyword(s):  
Upper Mantle ◽  
Western Europe ◽  
Suture Zone ◽  
P Wave ◽  
Mantle Structure ◽  
The West ◽  
Data Set ◽  
Lower Velocity ◽  
Teleseismic Tomography ◽  
Upper Mantle Structure

Abstract. The presented study aims to resolve the upper mantle structure around the Trans-European Suture Zone (TESZ), which is the major tectonic boundary in Europe. The data of 183 temporary and permanent seismic stations operated during the period of the PASsive Seismic Experiment (PASSEQ) 2006–2008 within the study area from Germany to Lithuania was used to compile the data set of manually picked 6008 top-quality arrivals of P waves from teleseismic earthquakes. We used the TELINV nonlinear teleseismic tomography algorithm to perform the inversions. As a result, we obtain a model of P wave velocity variations up to about ±3% with respect to the IASP91 velocity model in the upper mantle around the TESZ. The higher velocities to the east of the TESZ correspond to the older East European Craton (EEC), while the lower velocities to the west of the TESZ correspond to younger western Europe. We find that the seismic lithosphere–asthenosphere boundary (LAB) is more distinct beneath the Phanerozoic part of Europe than beneath the Precambrian part. To the west of the TESZ beneath the eastern part of the Bohemian Massif, the Sudetes Mountains and the Eger Rift, the negative anomalies are observed from a depth of at least 70 km, while under the Variscides the average depth of the seismic LAB is about 100 km. We do not observe the seismic LAB beneath the EEC, but beneath Lithuania we find the thickest lithosphere of about 300 km or more. Beneath the TESZ, the asthenosphere is at a depth of 150–180 km, which is an intermediate value between that of the EEC and western Europe. The results imply that the seismic LAB in the northern part of the TESZ is in the shape of a ramp dipping to the northeasterly direction. In the southern part of the TESZ, the LAB is shallower, most probably due to younger tectonic settings. In the northern part of the TESZ we do not recognize any clear contact between Phanerozoic and Proterozoic Europe, but further to the south we may refer to a sharp and steep contact on the eastern edge of the TESZ. Moreover, beneath Lithuania at depths of 120–150 km, we observe the lower velocity area following the boundary of the proposed paleosubduction zone.

scholarly journals Crustal and upper mantle structure beneath south-western margin of the Arabian Peninsula from teleseismic tomography

2014 ◽  
Vol 15 (7) ◽  
pp. 2850-2864 ◽  
Author(s):  
Félicie Korostelev ◽  
Clémence Basuyau ◽  
Sylvie Leroy ◽  
Christel Tiberi ◽  
Abdulhakim Ahmed ◽  
...  
Keyword(s):  
Upper Mantle ◽  
Arabian Peninsula ◽  
Mantle Structure ◽  
Teleseismic Tomography ◽  
Western Margin ◽  
Upper Mantle Structure
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