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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