04/04/2020

Members login


An-Najah National University
Project Coordinator
www.najah.edu

New Page 1
Funded By:
Supported by:

     Articles & Research

Data Resources Category
Data Resources Category Scientific Paper
Research Title The crustal structure of the Dead Sea Transform

Published by (sources)

Geophysical Journal International, 156, 3, 655-681

Carried out by (authors)

Ayman Mohsen
Issue Year 2004
Abstract

To address one of the central questions of plate tectonics - How do large transform systems work and what are their typical features? - seismic investigations across the Dead Sea Transform (DST), the boundary between the African and Arabian plates in the Middle East, were conducted for the first time. A major component of these investigations was a combined reflection/refraction survey across the territories of Palestine, Israel and Jordan. The main results of this study are: (1) The seismic basement is offset by 3-5 km under the DST, (2) The DST cuts through the entire crust, broadening in the lower crust, (3) Strong lower crustal reflectors are imaged only on one side of the DST, (4) The seismic velocity sections show a steady increase in the depth of the crust-mantle transition (Moho) from ~26 km at the Mediterranean to ~39 km under the Jordan highlands, with only a small but visible, asymmetric topography of the Moho under the DST. These observations con be linked to the left-lateral movement of 105 km of the two plates in the last 17 Myr, accompanied by strong deformation within a narrow zone cutting through the entire crust. Comparing the DST and the San Andreas Fault (SAF) system, a strong asymmetry in subhorizontal lower crustal reflectors and a deep reaching deformation zone both occur around the DST and the SAF. The fact that such lower crustal reflectors and deep deformation zones are observed in such different transfrom plate boundaries.

 
<< April 2020 >>
Sat Sun Mon Tue Wed Thu Fri
        1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
 
 

All Rights Reserved, SASPARM Project 2013