Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New tectonic micro plate discovered under Tibet

31.10.2011
In Central Tibet, a separate, relatively homogenous Tibetan plate exists with a thickness of about 100 kilometres.

This plate is moved from south to north-east over the Eurasian plate and pushes it down 250 kilometres deep into the mantle.


GFZ Potsdam

This new view on the plate tectonic collision of India and Eurasia was presented by team of scientists from the GFZ German Research Centre for Geosciences in cooperation with Chinese, American and British scientists in the latest issue of "Nature Geosciences" (Advance Online Publication on Nature Geoscience).

The Indian tectonic plate is currently moving at a speed of about five centimetres per year to the northeast. "/In its collision with Eurasia it pushes the Himalayas and the Tibetan plateau up like a bulldozer, bores itself 500 kilometres under Tibet and is clearly detectable up to a depth of about 250 kilometres. We had already shown that in our previous studies/”, says Professor Rainer Kind of the GFZ (Helmholtz Association). "/But until now there was not enough data to see how the tectonic plates behave in the collision on the northern edge of Tibet/."

In continuation of earlier joint experiments, the team of geoscientists therefore carried out an additional major seismological project in northern Tibet. With this so-called "receiver function" method, the boundary layers of different materials are mapped within the Earth using seismic waves from distant earthquakes, practically scanning the subsurface of Tibet from below. From the results the deformation of the tectonic plates can be determined.

The images of the Earth's interior up to several hundred kilometres depth obtained with this method are of a much higher resolution than any previous images. As a result, the newly discovered Tibetan plate appears as a much more defined, independent area in this part of the lithosphere between India and Eurasia, south of the Tarim Basin.

Wenjin Zhao, Prakash Kumar, James Mechie, Rainer Kind, Rolf Meissner, Zhenhan Wu, Danian Shi, Heping Su, Guangqi Xue, Marianne Karplus, Frederik Tilmann:/ „Tibetan plate overriding the Asian plate in central and northern Tibet”/, Nature Geosciences, DOI: 10.1038/NGEO1309

Franz Ossing
Helmholtz Centre Potsdam
GFZ German Research Centre for Geosciences
Deutsches GeoForschungsZentrum
- Public Relations -
Telegrafenberg
14473 Potsdam / Germany
e-mail: ossing@gfz-potsdam.de
Tel. ++49 (0)331-288 1040
Fax ++49 (0)331-288 1044

Franz Ossing | GFZ Potsdam
Further information:
http://www.gfz-potsdam.de/

More articles from Earth Sciences:

nachricht NASA examines Peru's deadly rainfall
24.03.2017 | NASA/Goddard Space Flight Center

nachricht Steep rise of the Bernese Alps
24.03.2017 | Universität Bern

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Argon is not the 'dope' for metallic hydrogen

24.03.2017 | Materials Sciences

Astronomers find unexpected, dust-obscured star formation in distant galaxy

24.03.2017 | Physics and Astronomy

Gravitational wave kicks monster black hole out of galactic core

24.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>