PANIC: Camera Caught China Quake As It Happened May 12, 2008

Tibetan tectonics trigger China quake: Geologists
Camera caught quake as it happened May 12, 2008

(CNN) — The death toll from the China earthquake was 12,012 Tuesday night, but was expected to rise as soldiers and rescue crews pulled more bodies from crumbled buildings at the epicenter in Sichuan province.

Authorities said the death toll from Monday's quake might change every hour, as they heard reports from crews frantically working to remove bodies and survivors from the debris, the state-run Xinhua news agency said.

Xinhua reported 26,026 people injured. Thousands were missing, many of them buried, and the tally kept changing.


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Tibetan tectonics trigger China quake: Geologists

The violent quake that shook China's Sichuan province is linked to a shift of the Tibetan plateau to the north and east, experts said.

"There will certainly be many aftershocks," commented Paul Tapponnier, an expert on tectonics in the region that is prone to earthquakes.

The quake, with a magnitude of 7.8, struck close to densely populated areas of Sichuan province and was felt across a swathe of southeast Asia.

China's state-run Xinhua news agency quoted local disaster relief officials as saying 3,000 to 5,000 people were estimated to have died in just one district of Sichuan, Beichuan County.

Earthquakes are frequent and deadly along the fringes of the Tibetan Plateau, which was raised when India collided into Eurasia, starting some 50 million years ago.

It is this powerful thrust that created the Himalayas, towering at 8,848 metres with Mount Everest, the highest peak. The mountains continue to reach skyward to this day, propelled by unstable tectonic terrain.

"Tibet is being pushed to the east. It is straddling southern China and locally the Sichuan bassin," said Tapponier.

The quake that emanated in the Longmenshan margins of the Tibetan plateau "has a very complex geology," said Robin Laccassin, director of the tectonics department at the Institute.

"There are many major fault lines... Some are ancient and they probably broke," said Laccassin.

The deadliest earthquake to rock the Tibetan plateau in the 20th century was in 1920 when 230,000 people died in Gansu province. Another quake in Yunnan in the southwest left more than 15,000 dead in 1970.

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