Island Arcs of the Lesser Antilles
Month: December 2015
Radar Topography
Shuttle Radar Topography Mission Geophysicist Dr. Ian stewart has kindly prepared for the website radar images of the islands using the 2000 shuttle imagery. An explanation of how this was done follows below the Radar Map Gallery. In 2000 radar data was acquired by the space shuttle which enabled virtually complete mapping of the Earth’s… Continue reading Radar Topography
Green Volcanoes
GREEN VOLCANOES Green tropical jungle-covered volcanoes standing out of warm blue seas in balmy Trade Winds, surrounded by palm-lined white coral sand beaches and reefs may be the ideal of the tourist trade and the eco-tourist seeking unspoiled tropical rain forest, but they can be a headache for the geologist looking for rocks. In a… Continue reading Green Volcanoes
Other Volcano Websites
SOME VOLCANO WEBSITES www.geology.sdsu.edu/how_volcanoes_work www.volcanoworld.org www.geo.mtu.edu/volcanoes http://volcanoes.usgs.gov www.uwiseismic.com www.caribbeanvolcanoes.com www.geokem.com www.dominicapsn.freeyellow.com www.gl.rhul.ac.uk/schools/cabinet03/drawer01.htm Some sites include video clips that require the installation of Quick Time.
Volcanistic Terminology
SOME VOLCANICLASTIC TERMINOLOGY PYROCLAST – Juvenile crystals, crystal fragments, glass or rock fragments produced during a volcanic eruption. BOMB – A pyroclast with a mean diameter exceeding 64mm. It may be rounded to angular. BLOCK – A pyroclast with a mean diameter exceeding 64mm. Its angular to subangular shape indicates that it was ejected as… Continue reading Volcanistic Terminology