Classification of Pyroclastic Deposits

CLASSIFICATION OF PYROCLASTIC DEPOSITS OF THE LESSER ANTILLES Although a general agreement exists on the classification of modern pyroclastic rocks, regional differences often add significant complications, so that specific classification schemes may not be readily adaptable to all areas. For example, in the Lesser Antilles the explosive and gravitational collapse of domes produce pyroclastic flows… Continue reading Classification of Pyroclastic Deposits

Volcano Activity Status

STATUS OF VOLCANIC ACTIVITY IN THE LESSER ANTILLES Island Potentially active volcano Last Holocene Eruption Historic Volcanic Earthquakes Geothermal Activity Saba Saba 280 yrs BP X X St. Eustatius The Quill ~1700 yrs BP X St. Kitts Mt. Liamugia 1843? 1620 yrs BP X X Nevis Nevis Peak X X Montserrat Soufriere Hills 1995- present… Continue reading Volcano Activity Status

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

Figure 6

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 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

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