The United States Geological Survey recorded a Magnitude 4.7 Earthquake at a depth of 46.2 km, about 44 km to the north of the town of Diphu in the Karbi Anglong District of Assam State India, at about 6.40 pm local time (about 1.10 pm GMT) on Wednesday 13 November 2019. The incident was felt locally, but no damage or casualties have been reported.
The location of the 13 November 2019 Assam Earthquake. The red line is a boundary between two tectonic plates, in this case the Indian and Eurasian plates in the north and the Indian and Burma Plates in the southeast. USGS.
Earthquake activity in the area is caused by the uplift of the Tibetan Plateau, due to the impact of India into Eurasia to the south. he Indian Plate is moving northwards at a rate of 5 cm per year, causing it to impact into Eurasia, which is also moving northward, but only at a rate of 2 cm per year. The collision of the Indian and Eurasian plates has lead to the formation of the Himalayan Mountains, the Tibetan Plateau, and the mountains of southwest China, Central Asia and the Hindu Kush.
Block diagram showing how the impact of the Indian Plate into Eurasia is causing uplift on the Tibetan Plateau. Jayne Doucette/Woods Hole Oceanographic Institution.
Witness accounts of Earthquakes can help geologists to understand these events, and the structures that cause them. The international non-profit organisation Earthquake Report is interested in hearing from people who may have felt this event; if you felt this quake then you can report it to Earthquake Report here.
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