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 September 19, 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 September 19, 2014).

Share This



More Earth & Climate News

Friday, September 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Wildfires in CA Burn Forest Asunder

Raw: Wildfires in CA Burn Forest Asunder

AP (Sep. 18, 2014) An out-of-control Northern California wildfire has nearly 2,800 people from their homes as it continues to grow, authorities said Thursday. Authorities said a man has been arrested on suspicion of arson for starting the fire on Saturday. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Raw: Elephant Undergoes Surgery in Tbilisi Zoo

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

AP (Sep. 18, 2014) Grand the elephant has successfully undergone surgery to remove a portion of infected tusk at Tbilisi Zoo in Georgia. British veterinary surgeons used an electric drill to extract the infected piece. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Raw: Scientists Examine Colossal Squid

Raw: Scientists Examine Colossal Squid

AP (Sep. 16, 2014) Squid experts in New Zealand thawed and examined an unusual catch on Tuesday: a colossal squid. It was captured in Antarctica's remote Ross Sea in December last year and has been frozen for eight months. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Man Floats for 31 Hours in Gulf Waters

Man Floats for 31 Hours in Gulf Waters

AP (Sep. 16, 2014) A Texas man is lucky to be alive after he and three others floated for more than a day in the Gulf of Mexico when their boat sank during a fishing trip. (Sept. 16) 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