GeologyRocksvolcano
- Location: Quarry near Coco Bay Hotel, Antigua, Caribbean
- Date Taken (dd-mm-yy): 17/01/2008
I think this is an altered limestone reef (Oligocene) that formed at the same time that the main volcano of Antigua was forming. As the volcano became less active, small reefs - only 10s of metres in size would form along the sides. As the volcano was active, the relative sea level would rise and fall rapidly, causing drowning or emergence of the reefs. However, later eruptions would occur, covering the reefs and altering them. This may be one such reef (the lighter grey area, whereas the red/brown rock is basalt).
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- Location: Quarry near Coco Bay Hotel, Antigua, Caribbean
- Date Taken (dd-mm-yy): 17/01/2008
Small cubes of galena (lead sulphide) formed in a Oligocene limestone reef during alteration by volcanic activity. The matrix is heavily altered limestone.
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- Location: Plymouth, Montserrat, Caribbean
- Date Taken (dd-mm-yy): 16/01/2008
This is Plymouth, the former capital of Montserrat, which was destroyed in the pyroclastic flow from the 1995 eruption. There is some 10-15m of mud and ash burying the town. The town was evacuated before the eruption.
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- Location: Montserrat, Caribbean
- Date Taken (dd-mm-yy): 16/01/2008
The volcanic dome of Montserrat (the Soufrière Hills), which last erupted in 1995. You can see the steam from the dome, along with sulphur deposits.
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- Location: Vesuvius
- Date Taken (dd-mm-yy): 1st June 2007
Image of the crater at Vesuvius. Apologies for having my ugly mug spoiling your view!!
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- Location: Vesuvius
- Date Taken (dd-mm-yy): 1st June 2007
Vesuvius dwarfing Naples below.
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- Location: El Misti, Arequipa, Peru
- Date Taken (dd-mm-yy): Late 2005
El Misti as seen from the roof terrace of the Arequipa Airport. El Misti is an andesitic stratovolcano with nested craters at the summit and rest on top of an older, pleistocene volcano that experienced caldera collaps about 50,000 years ago. Additional info: Global Volcanism Programme of the Smithsonian
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- Location: Holyrood Park, Edinburgh, UK
- Date Taken (dd-mm-yy): 05-10-2008
Arthur's Seat in Holyrood Park Edinburgh, which is an ancient volcano. What remains now are the volcanic vents and some lava flows.
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