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DAILY NEWS ANALYSIS

  • 19 July, 2020

  • 8 Min Read

Previously unknown faults at the foot of the Himalaya discovered

Previously unknown faults at the foot of the Himalayas discovered

Context

  • Data from an oil and gas exploration company has now helped geologists discover a series of faults at the foot of the Himalaya.

Sesimic exploration data

  • The team looked at seismic reflection data, which are routinely collected by exploration companies looking for oil and gas.
  • In this method, seismic waves are produced by small explosions at multiple sources, and many recorders called geophones to record the sound echoing off layers beneath the surface.

Composite image

  • The signals are combined to make an image that looks like a slice showing layers through the top few kilometres of the Earth’s crust.
  • The researchers were able to identify the faults because the pattern of layers showed bends.
  • This network of faults shows that the Himalayan deformation reaches further [about 40 kilometres further south] than we previously thought.

Source: TH


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