Maharashtra State PSC Model Paper 2

The correct answer is option 2 i.e. Tuff.

A subaqueous volcano is in the form of sloping tuff cones.

• It is formed beneath freshwater and never builds above lake level.
• White Horse Bluff in the Wells Gray-Clearwater volcanic field of east-central British Columbia, Canada is an example.
• It can be compared to subaerial volcano which forms and erupts on land surface, or under the air.
• It is most commonly formed in oceans, but can also form in lakes, rivers and subglacial lakes.
• It is associated with subaqueous sedimentary deposits and these deposits range from near shore, off-shore and abyssal mudstone deposits.