Kick-'em-Jenny
From Freepedia
Kick-'em-Jenny is an active submarine volcano on the Caribbean sea floor 8 km north of the island of Grenada and about 8 km west of Ronde Island in the Grenadines at Latitude: 12.300°N. Longitude: 61.640°W. Kick-'em-Jenny rises 1,300 meters (4,300 feet) above the sea floor on the steep inner western slope of the Lesser Antilles ridge. The North American tectonic plate is subducting the Caribbean tectonic plate to the east of this ridge and under the Lesser Antilles island arc.
The first record of the volcano was in 1939, when an eruption broke the sea surface and sent a cloud of steam and debris 275 m into the air. The summit is 160 m below the sea surface. The summit grew 75 m between 1962 and 2002. The volcano has erupted ten times between 1939 and 1990 and a submersible survey in 2003 detected a crater with active fumaroles releasing cold and hot gas bubbles. Samples of fresh olivine basalt were collected. An arc shaped collapse structure appears on the west flank and was the apparent source of a submarine debris avalanche extending 15 km down the ridge slope to the west toward the Grenada Basin.
The 1939 eruption produced a number of tsunamis with amplitudes of about 2 m which affected the northern coast of Grenada and parts of the southern Grenadines.
