Geological highlights in South-Algeria
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(2007)
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Start from the camp in Tamanrasset
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The driver crew
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First basalt columns on the way to the
Hoggar mountains
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Overturned basalt columns
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Guelta with granites above the Precambrian
basement
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Basaltic lava-field in the same guelta
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Beautiful basalt columns nearby the
Assekrem summit
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Panorama view from top of the Assekrem
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An unexpected coincidence
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High noon; temperature under the tree:
35°C
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Geological meeting
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New drinking water reserves
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Granitic ring-pluton Tilhaliouine
(23° 18' N / 4° 43' E)
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Inside of Tilhaliouine
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Granite wall of the Tilhaliouine
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On the way: Outcrop of
methamorphic Precambrian sediments
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Methamorphic Precambrian sediments
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Outcrop of Precambrian marble
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Ouksem -- a young explosive double-crater
(23° 55' N / 5° 49' E)
The eruption had imbued through a old granitic dome
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The northern part of Ouksem with
a soda-lake
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The southern part of Ouksem with
granitic walls
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Typical ash-layers on the crater rim
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First Tassili-sandstone on Precambrian
basement
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Paleozoic Tassili-sandstone with fluvial
cross-bedding
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Satellite-image from the outcrop of
Precambrian marble, quartzite and amphibolite
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The same strip on the bottom
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Outcrop of Precambrian marble in this
strip
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Position: 22° 55' 36" N / 7°
33' 26" E
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Again an outcrop of beautiful Precambrian
marble
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Position: 22° 43' 11" N / 8°
21' 09" E
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Granitic ring-pluton Tin Eroras
(23° 43' N/ 8° 30' E)
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Inside the ring-pluton Tin Eroras
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with contact-methamorhic sandstones
on top
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Isolated outcrop of cross-bedded Tassili sandstones
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with ripple marks
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The large Tassili plateau at the horizon
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The Tassili plateau
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Enormous walls of sandstones
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TDiscordance between Precambrian
basement and Paleozoic Tassili-sandstone ?
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Detail
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The geological tour is finished
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in the Oasis Djanet
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