St. Kitts - Geothermal Activity
Active low temperature (up to 100oC) fumaroles are present in the crater
of Mt. Liamuiga. Cracks within the limestone at the base of Brimstone Hill emit
a strong smell of sulphur but no steaming was observed by Simpson and Shepherd (2002).
The temperatures within these cracks
were only slightly elevated and sulphur crystals
line the cracks locally. A strong smell of sulphur is also present along the coastline
below Brimstone Hill. No obvious source for the smell was observed; however, discoloration
of rocks near the shore may indicate that the vents are located just offshore and
that diffuse venting occurs through the ground along the coastline.
Brimstone Hill National Park. Strong sulphur smells and discolored rocks in the vicinity of this andesite dome suggests that there may be fumarolic vents located at the base of the dome and along the coastline to the west (left of the photograph).
Crater of Mount Mt. Liamuiga showing one of several areas of fumarolic activitiy located along the crater walls. The photograph shows the fumarolic field on the northern crater walls and is taken from the top of the track leading to the crater rim.