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Ol Doinyo Lengai volcano (Tanzania) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 July-24 July 2007 (New Activity / Unrest)

Wed, 18 Jul 2007, 06:00
06:00 AM | BY: VN
According to news reports, an eruption began at Ol Doinyo Lengai around 19 July, forcing villagers living near the volcano to evacuate. An article stated that, "...more than 1,500 people, most of them Maasai families, vacated their homes in Ngaresero, Orbalal and Nayobi villages following the tremors that triggered the volcanic eruption." "Villagers are reported to have heard roaring...before the volcano started discharging ash and lava." There were reports of a damaged school and two injuries, but no reports of deaths.

Sources: East African Standard, Associated Press
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From: Global Volcanism Program, 2007. Report on Ol Doinyo Lengai. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 18 July-24 July 2007. Smithsonian Institution and US Geological Survey.

Previous news

Thu, 5 Apr 2007, 20:51

Ol Doinyo Lengai volcano (Tanzania), activity update: new activity at Western crater rim (?)

Thomas, our correspondant in Arusha climbed Lengai last week and reports indirect signs of activity near the western rim of the crater, at the place where lava overflowed in the March 2006 eruption. this is his report: ... Read all
Tue, 20 Feb 2007, 16:16

Ol Doinyo Lengai volcano (Tanzania), activity update: shallow magma present

Glow from nearby (but hidden) lava pooling somewhere beneath the collapse pit in Lengai's crater (taken on evening of 31 Jan 07).
During our latest expedition to the active crater of Lengai volcano from early 31 Jan - 2 February 2007, no eruption of natrocarbonatite lava occured from the summit vents. According to local Maassai guides, the central area of the crater with the large collapse pit near the tall hornito T49b had not seen significant changes since last summer. From an open vent in the NE corner at the bottom of the pit at the base of the hornito, loud washing-machine like sounds of boiling lava was audible all the time. A large pool of lava must be found somewhere at very shallow depths in some caverns beneath that area. This assumption is confirmed by the glow of lava that was clearly visible one night from a second, smaller vent located about 30 m south of the large vent in the base of the collapse pit. One guide confirmed he had seen spattering of lava from this vent some two weeks earlier. Read all
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Satellite image of Ol Doinyo Lengai volcano by (c) Google Earth View
Satellite image of Ol Doinyo Lengai volcano by (c) Google Earth View
Stratovolcano 2890 m
Tanzania, -2.75°S / 35.9°E
Current status: minor activity or eruption warning (3 out of 5) Ol Doinyo Lengai volcano eruptions:
1550 BC (?), 50 AD (?), 700 AD (?), 1350 (?), 1880, 1882, 1904, 1907, 1914, 1916, 1921, 1926, 1940, 1954, 1955, 1958, 1960, 1967, 1983, 1994, 2006, 2007-ongoing
Typical eruption style
Explosive activity. In addition, at least during the past +-30 years near-continuous effusion and mildly explosive eruption of natrocarbonatite lava from vents inside the crater, sometimes overflowing over the rim, is taking place.

Ol Doinyo Lengai volcano tours

Crater Highlands & Rift Valley (Tanzania)
The Garden of Eden
10-day trekking and wildlife safari to the Ngorongoro Highlands and the Rift Valley, Tanzania
10 days / 9 nights - Moderate
Price $ 4100
Custom and group dates
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