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Updated: Sep 28, 2021 17:52 GMT
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A spectacular outcrop of tuffs dissected by visible faults near the lighthouse (Photo: Tom Pfeiffer)
A spectacular outcrop of tuffs dissected by visible faults near the lighthouse (Photo: Tom Pfeiffer)
File: santorini_g3202.jpg | 1841 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Faszination Volcano: Santorini May+Oct 08 (Part 1): Akrotiri
... and in: Photo of the Day
Thick pumice and ash layers from various volcanic eruptions exposed in the southern caldera walls of Santorini (Photo: Tom Pfeiffer)
Thick pumice and ash layers from various volcanic eruptions exposed in the southern caldera walls of Santorini (Photo: Tom Pfeiffer)
File: santorini_g3168.jpg | 1607 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Faszination Volcano: Santorini May+Oct 08 (Part 1): Akrotiri
The third phase ash-flow deposit of the Minoan eruption, in places several tens of meters thick. (Photo: Tom Pfeiffer)
The third phase ash-flow deposit of the Minoan eruption, in places several tens of meters thick. (Photo: Tom Pfeiffer)
File: santorini_g3205.jpg | 1555 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Faszination Volcano: Santorini May+Oct 08 (Part 1): Akrotiri
... and in: Photo of the Day
The contact between the metamorphic basement and volcanic rocks (Photo: Tom Pfeiffer)
The contact between the metamorphic basement and volcanic rocks (Photo: Tom Pfeiffer)
File: santorini_g14199.jpg | 4805 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Santorini May 09: Fascination Volcano tour photos
... and in: Photo of the Day
... and in: Photo of the Week
The thick ash flow deposits left by the Minoan eruption (Photo: Tom Pfeiffer)
The thick ash flow deposits left by the Minoan eruption (Photo: Tom Pfeiffer)
File: santorini_g3204.jpg | 1482 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Faszination Volcano: Santorini May+Oct 08 (Part 1): Akrotiri
A spectacular geologic outcrop at the western Yasur caldera rim exposes a 3-4 meter thick, solid red deposit which in fact probably is a deposit from a spatter-rich pyroclastic flow, welded so well together that it appears like a lava flow. A fine-grained base layer and loose or poorly welded spatter at the top can be seen as well.
Btw, very similar deposits can be observed on Santorini (e.g. "Upper Scoria 2") where they have become subjects of numerous studies and are now famous as perfect examples for this unusual (and previously unrecognized) type of pyroclastic flows.  (Photo: Tom Pfeiffer)
A spectacular geologic outcrop at the western Yasur caldera rim exposes a 3-4 meter thick, solid red deposit which in fact probably is a deposit from a spatter-rich pyroc...
File: vanuatu_g15370.jpg | 1611 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Vanuatu May 2009: colors
Large ash- and pumice pyroclastic flow deposits witness from the giant eruption of Lake Atitlán ca. 74.000 years ago. (Photo: Tom Pfeiffer)
Large ash- and pumice pyroclastic flow deposits witness from the giant eruption of Lake Atitlán ca. 74.000 years ago. (Photo: Tom Pfeiffer)
File: gua_i20136.jpg | 1306 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Guatemala Dec 2009: expedition photos
... and in: Photo of the Day
Erosion gullies converging towards one of the major drainage canyongs out of the caldera to the west. (Photo: Tom Pfeiffer)
Erosion gullies converging towards one of the major drainage canyongs out of the caldera to the west. (Photo: Tom Pfeiffer)
File: ambrym_i0289.jpg | 1903 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Vanuatu May 2009: Ambrym caldera
... and in: Photo of the Day
Numerous hollows many of which still contain charcoal are present in certain sections of the ash flow. When the pyroclastic avalanche flowed over a forest, many trunks and branches of trees were incorporated into the flow and their shape preserved in the deposit. (Photo: Tom Pfeiffer)
Numerous hollows many of which still contain charcoal are present in certain sections of the ash flow. When the pyroclastic avalanche flowed over a forest, many trunks an...
File: gua_i20153.jpg | 1012 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Guatemala Dec 2009: expedition photos
... and in: Photo of the Day
The old soil where the trees grew is visible here. Probably, it formed by deposits of collapse of the Rakata island after the 1883 eruption. The sediment platform it belongs to is now being eroded by wave action. (Photo: Tom Pfeiffer)
The old soil where the trees grew is visible here. Probably, it formed by deposits of collapse of the Rakata island after the 1883 eruption. The sediment platform it belo...
File: krakatau_g4877.jpg | 2314 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Krakatau revisited: expedition July 2008 photos
Yashmin explaining the charred wood found in the ignimbrite (ash flow) deposit. (Photo: Tom Pfeiffer)
Yashmin explaining the charred wood found in the ignimbrite (ash flow) deposit. (Photo: Tom Pfeiffer)
File: gua_i20148.jpg | 2921 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Guatemala Dec 2009: expedition photos
On the way to Marum, we follow a large valley cutting through undulated older ash deposits.  (Photo: Tom Pfeiffer)
On the way to Marum, we follow a large valley cutting through undulated older ash deposits. (Photo: Tom Pfeiffer)
File: ambrym_i0055.jpg | 2433 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Vanuatu May 2009: excursion to Marum crater
... and in: Vanuatu - volcanoes in the South Sea: tour photos
... and in: Photo of the Day
Inside the Ambrym caldera (Photo: Yashmin Chebli)
Inside the Ambrym caldera (Photo: Yashmin Chebli)
File: interieur.jpg | 3146 Hits
Copyright: Yashmin Chebli
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Image found in Ambrym volcano - the lava lakes of Marum and Benbow
... and in: Ambrym volcano tour Sep 2010 photos
... and in: Photo of the Day
The volcanic ash layers covering the flat caldera floor, carved by erosion. (Photo: Tom Pfeiffer)
The volcanic ash layers covering the flat caldera floor, carved by erosion. (Photo: Tom Pfeiffer)
File: ambrym_i0052.jpg | 2114 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Vanuatu May 2009: excursion to Marum crater
... and in: Photo of the Day
The Lower Pumice deposits (200 and 180 ka) on the Akrotiri peninsula near Balos (Photo: Tom Pfeiffer)
The Lower Pumice deposits (200 and 180 ka) on the Akrotiri peninsula near Balos (Photo: Tom Pfeiffer)
File: santorini_d19607.jpg | 1302 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Santorini April-May 2007 (Fascination Volcano tour)
... and in: Santorini: the caldera cliffs seen from the boat (April / May 2007)
Smooth white rock surfaces (Photo: Tom Pfeiffer)
Smooth white rock surfaces (Photo: Tom Pfeiffer)
File: milos_g6689.jpg | 2721 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Milos Island, Greece: photos from Oktober 2008 - Sarakinikos coast
... and in: Photo of the Day
... and in: Photo of the Month
The limestone massifs of Mesa Vouno (l) and Profitis Ilias mountain (c), separated by a tectonic graben, seen from the N. (Photo: Tom Pfeiffer)
The limestone massifs of Mesa Vouno (l) and Profitis Ilias mountain (c), separated by a tectonic graben, seen from the N. (Photo: Tom Pfeiffer)
File: santorini_i35664.jpg | 1524 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Photo of the Day
Faulted finely layered volcanic ash sediments containing a scoria bomb (Photo: Tom Pfeiffer)
Faulted finely layered volcanic ash sediments containing a scoria bomb (Photo: Tom Pfeiffer)
File: milos_g6548.jpg | 788 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Milos Island, Greece: photos from Oktober 2008 - Sarakinikos coast
Large ballistic block with its impact structure preserved in the BU-1 pumice fall deposit (ca. 200,000 ka old) (Photo: Tom Pfeiffer)
Large ballistic block with its impact structure preserved in the BU-1 pumice fall deposit (ca. 200,000 ka old) (Photo: Tom Pfeiffer)
File: santorini_g3159.jpg | 1430 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Faszination Volcano: Santorini May+Oct 08 (Part 1): Akrotiri
The western escarpment wall of the Rift Valley at Lake Natron. (Photo: Tom Pfeiffer)
The western escarpment wall of the Rift Valley at Lake Natron. (Photo: Tom Pfeiffer)
File: tz_e34985.jpg | 3362 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Lake Natron, the Rift Valley and Lake Manyara (Jan 08)
ambrym_i0281.jpg (Photo: Tom Pfeiffer)
ambrym_i0281.jpg (Photo: Tom Pfeiffer)
File: ambrym_i0281.jpg | 372 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
Bizarre erossion structures of the ash plain in the Ambrym caldera. (Photo: Tom Pfeiffer)
Bizarre erossion structures of the ash plain in the Ambrym caldera. (Photo: Tom Pfeiffer)
File: ambrym_i0050.jpg | 1736 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Vanuatu May 2009: excursion to Marum crater
... and in: Vanuatu - volcanoes in the South Sea: tour photos
ambrym_i0283.jpg (Photo: Tom Pfeiffer)
ambrym_i0283.jpg (Photo: Tom Pfeiffer)
File: ambrym_i0283.jpg | 446 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
The lower part of the trail on the way back down towards Lake Natron. To the left, the wall of the western escarpment of the Rift Valley. (Photo: Tom Pfeiffer)
The lower part of the trail on the way back down towards Lake Natron. To the left, the wall of the western escarpment of the Rift Valley. (Photo: Tom Pfeiffer)
File: tz_d15310.jpg | 509 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Ol Doinyo Lengai volcano, Feb 2007
Climbing the impressive caldera cliffs with its many tuff layers exposed along a little trail (Photo: Tom Pfeiffer)
Climbing the impressive caldera cliffs with its many tuff layers exposed along a little trail (Photo: Tom Pfeiffer)
File: santorini_g3165.jpg | 492 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Faszination Volcano: Santorini May+Oct 08 (Part 1): Akrotiri
Red, hardened ash deposits from eruptions prior to 1888, cut by erosion (Photo: Tom Pfeiffer)
Red, hardened ash deposits from eruptions prior to 1888, cut by erosion (Photo: Tom Pfeiffer)
File: vulcano_g5806.jpg | 494 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Stromboli to Etna Oct 08 (Part 1): Vulcano & Lipari Islands
Eroded white ash deposit at the coast of Sarakiniko (Photo: Tom Pfeiffer)
Eroded white ash deposit at the coast of Sarakiniko (Photo: Tom Pfeiffer)
File: milos_g6710.jpg | 503 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Milos Island, Greece: photos from Oktober 2008 - additional photos
Peter and Philip watching the activity. The ash cloud is drifting to the west, making it rain more ash there... (Photo: Tom Pfeiffer)
Peter and Philip watching the activity. The ash cloud is drifting to the west, making it rain more ash there... (Photo: Tom Pfeiffer)
File: lengai_e35213.jpg | 13451 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Lake Natron - Lengai volcano - Lake Manyara: photos
... and in: Ol Doinyo Lengai volcano (Tanzania) - ash eruptions (18 January 2008)
... and in: Photo of the Day
... and in: Photo of the Week
Smoking Bromo volcano and Batok cone with its deep radial erosion gullies (Photo: Tom Pfeiffer)
Smoking Bromo volcano and Batok cone with its deep radial erosion gullies (Photo: Tom Pfeiffer)
File: bromo_g5106.jpg | 6096 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Expedition to Krakatau, Bromo and Semeru (July 08)
... and in: The Tengger caldera at sunrise (July 2008)
... and in: Tour photos: Bromo, Semeru, Ijen
... and in: Photo of the Day
The smooth crust of the lake is broken into plates, which are moving against or away from each other, simulating plate tectonics. Above, a miniature mid-ocean spreading zone can be seen where two larger pieces of crust are moving away from each other. Even miniature transform faults and sheer zones due to differential and rotational movements can be seen. (Photo: Tom Pfeiffer)
The smooth crust of the lake is broken into plates, which are moving against or away from each other, simulating plate tectonics. Above, a miniature mid-ocean spreading z...
File: hawaii_e6871.jpg | 2320 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Lava lake in Pu'u 'O'o crater (July 2007)
... and in: Photo of the Day
The pumice and ash deposits of the Minoan eruption of Santorini; two of the students for scale. (Photo: Tom Pfeiffer)
The pumice and ash deposits of the Minoan eruption of Santorini; two of the students for scale. (Photo: Tom Pfeiffer)
File: santorini_d20417.jpg | 3105 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Santorini "Study abroad" field course: May 07
... and in: Photo of the Day
Ascending the Benbow crater along a ridge between erosion gullies. (Photo: Tom Pfeiffer)
Ascending the Benbow crater along a ridge between erosion gullies. (Photo: Tom Pfeiffer)
File: ambrym_i0335.jpg | 1509 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Vanuatu May 2009: Ambrym caldera
Smooth, rounded erosion shapes in the white ash deposits (Photo: Tom Pfeiffer)
Smooth, rounded erosion shapes in the white ash deposits (Photo: Tom Pfeiffer)
File: milos_g6707.jpg | 1239 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Milos Island, Greece: photos from Oktober 2008 - additional photos
Only 100 m above sea level. A ghostly, tornado-like dust devil greets us on our way through fault-cut lava deserts into the Danakil depression. (Photo: Tom Pfeiffer)
Only 100 m above sea level. A ghostly, tornado-like dust devil greets us on our way through fault-cut lava deserts into the Danakil depression. (Photo: Tom Pfeiffer)
File: ethiopia_e35949.jpg | 3296 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Additional Photos: Danakil 02/08
... and in: Desert, salt and volcanoes: February 2008 tour photos by Tom Pfeiffer
... and in: Photo of the Day
Ash falls from eruptions during the past weeks have been concentrated in a sector west of the volcano according to prevailing easterly winds. Much of the vegetation on the Rift Valley walls and beyond has died. (Photo: Tom Pfeiffer)
Ash falls from eruptions during the past weeks have been concentrated in a sector west of the volcano according to prevailing easterly winds. Much of the vegetation on th...
File: lengai_e35053.jpg | 8046 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Ol Doinyo Lengai volcano (Tanzania) - ash eruptions (18 January 2008)
... and in: Photo of the Day
tz_d16380.jpg (Photo: Tom Pfeiffer)
tz_d16380.jpg (Photo: Tom Pfeiffer)
File: tz_d16380.jpg | 895 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Lake Manyara Natl Park: game drive
tz_d16379.jpg (Photo: Tom Pfeiffer)
tz_d16379.jpg (Photo: Tom Pfeiffer)
File: tz_d16379.jpg | 909 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Lake Manyara Natl Park: game drive
tz_d16378.jpg (Photo: Tom Pfeiffer)
tz_d16378.jpg (Photo: Tom Pfeiffer)
File: tz_d16378.jpg | 906 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Lake Manyara Natl Park: game drive
For comparison: a view from the same position in January 2008... Wide angle view of the northern crater with an eruption from the ash cone. Lake Natron and the Rift Valley can be seen in the background landscape 2000m below. 
More from January 2008 at this page. (Photo: Tom Pfeiffer)
For comparison: a view from the same position in January 2008... Wide angle view of the northern crater with an eruption from the ash cone. Lake Natron and the Rift Valle...
File: lengai_e35113.jpg | 2704 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Ol Doinyo Lengai volcano, Feb 2007
A complex pattern of hundres of erosion gullies characterize the morphology of the outer slopes of the Ambrym caldera and its craters. (Photo: Tom Pfeiffer)
A complex pattern of hundres of erosion gullies characterize the morphology of the outer slopes of the Ambrym caldera and its craters. (Photo: Tom Pfeiffer)
File: vanuatu_g15122.jpg | 1689 Hits
Copyright: Tom Pfeiffer / www.volcano-photo.com
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Image found in Vanuatu May 2009: Ambrym - aerials
... and in: Photo of the Day
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