Featured Research

from universities, journals, and other organizations

The Dead Sea: Tectonic Concurrence Below Ten Kilometers Of Sediments

Date:
January 30, 2009
Source:
Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
Summary:
The Dead Sea lies in a basin structure situated below the sea level. This deep subsidence is a result of a tectonic concurrence between processes in the upper lithosphere that led to subsiding and a compensating upward flow of rocks in the deeper layers of the lithosphere.

The Dead Sea lies in a basin structure situated below the sea level. This deep subsidence is a result of a tectonic concurrence between processes in the upper lithosphere that led to subsiding and a compensating upward flow of rocks in the deeper layers of the lithosphere.

This is a result presented by A. Petrunin and A. Sobolev from the GFZ - German Research Centre for Geosciences in the current issue of Physics Of The Earth And Planetary Interiors. In a series of thermomechanical numerical experiments they were able to show that the brittle layer of the Earth’s crust subsides when the African and the Arabian plate pass each other along a strike-slip fault.

Due to the lateral displacement, the Earth’s crust gets thinner at this point and a pull-apart basin develops that in the course of roughly 15 million years has been filled with a layer of sediments that is up to ten kilometres thick. In the upper part of the underlying Earth’s mantle, this basin development leads to a corresponding upward flow of hot and ductile rock material. These concurring tectonic processes thus determine the process of the basin development.

Petrunin and Sobolev demonstrate that the subsidence rate is controlled by four parameters: firstly the thickness of the brittle layer and the basin width, secondly the length of the strike-slip displacement, thirdly the rate of frictional softening of the crust and finally the viscosity of the ductile material in the upper mantle.

The detected mechanisms give insight into the formation and development of such pull-apart basins forming a natural rheology lab in which the history of the lithospheric deformation can be studied.


Story Source:

The above story is based on materials provided by Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences. Note: Materials may be edited for content and length.


Journal Reference:

  1. Petrunin et al. Three-dimensional numerical models of the evolution of pull-apart basins. Physics of The Earth and Planetary Interiors, 2008; 171 (1-4): 387 DOI: 10.1016/j.pepi.2008.08.017

Cite This Page:

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences. "The Dead Sea: Tectonic Concurrence Below Ten Kilometers Of Sediments." ScienceDaily. ScienceDaily, 30 January 2009. <www.sciencedaily.com/releases/2009/01/090128074624.htm>.
Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences. (2009, January 30). The Dead Sea: Tectonic Concurrence Below Ten Kilometers Of Sediments. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2009/01/090128074624.htm
Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences. "The Dead Sea: Tectonic Concurrence Below Ten Kilometers Of Sediments." ScienceDaily. www.sciencedaily.com/releases/2009/01/090128074624.htm (accessed July 22, 2014).

Share This




More Earth & Climate News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
Spectacular Lightning Storm Hits London

Spectacular Lightning Storm Hits London

AFP (July 19, 2014) A spectaCular lightning storm struck the UK overnight Friday. Images of lightning strikes over the Shard and Tower Bridge in central London. Duration: 00:23 Video provided by AFP
Powered by NewsLook.com
A Centuries' Old British Tradition Is Far from a Swan Song

A Centuries' Old British Tradition Is Far from a Swan Song

AFP (July 19, 2014) As if it weren't enough that the Queen is the Sovereign of the UK and 15 other Commonwealth realms, she is also the owner of all Britain's unmarked swans. Duration: 02:18 Video provided by AFP
Powered by NewsLook.com
Raw: High Winds Push Growing Washington Widlfire

Raw: High Winds Push Growing Washington Widlfire

AP (July 19, 2014) Pushed by howling, erratic winds, a massive wildfire in north-central Washington was growing rapidly and burning in new directions Saturday. (July 19) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins