Cising Mountain

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Coordinates: 25°10′17″N 121°33′06″E / 25.17139, 121.55167

Cising Mountain

Elevation 1,120 m (3,675 ft)
Location Taipei, Flag of the Republic of China Republic of China (Taiwan)
Prominence 1,120 m (3,675 ft)
Coordinates 25°10′17, N°121′33
Type extinct volcano
Age of rock Pleistocene
Last eruption 700,000 BC

Cising Mountain (Chinese: 七星山) is located on the Datun Volcano Group and the tallest mountain at the rim of the Taipei Basin. Its main peak is 1,120m tall (above elevation). It began erupting about 700,000 years ago.[1] There was a crater at the peak but it became seven small peaks due to post-eruption erosion.

The mountain has faults running across the southeast and northwest contours with volcanic landforms like hot springs and fumaroles.

Shamao Mountain is a round volcanic dome looking like a black gauze cap. As the lava was more viscous when the mountain was formed, it gradually became a tholoid, also known as a cumulo-dome volcano. Shamao Mountain is a parasitic volcano of the Cising Mountain group.

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