The Great Rift: Africa's Changing Valley

Smith, Anthony

1988

Book ID 248

See also

Smith, Anthony The Great Rift: Africa's Changing Valley, 1988
Extract Date: 1880

the twelfth. .

The last [eruption], in 1966, was the twelfth since 1880, and we may therefore be due for another. ...Lengai's 1966 eruption was much appreciated by photographers in light planes and most impressive to all who saw it.

Extract ID: 752

See also

Smith, Anthony The Great Rift: Africa's Changing Valley, 1988
Extract Date: 1983-5

Minor activity

Minor activity has continued since then. January to March 1983 witnessed, according to one report, 'moderate quantities' of pale grey ash emerging from the crater floor. During May 1984 there were two vents on the floor's north side that 'contained a black bubbling liquid'. Three months later a 'dark grey to black, ropy, mud-like crust' had formed over the inner surface of the crater. By February 1985 a lake, 'boiling vigorously', covered a quarter of the crater's floor.

Extract ID: 767

See also

Smith, Anthony The Great Rift: Africa's Changing Valley, 1988

Mount Meru, dominates the town of Arusha

Mount Meru, which either dominates the town of Arusha to the east of Ngorongoro or vanishes completely within a covering of cloud, flexed its muscles moderately in 1910. Presumable its altitude of 4566 metres will be amended by future eruptions.

Extract ID: 632

See also

Smith, Anthony The Great Rift: Africa's Changing Valley, 1988

Summary of recorded eruptions

Summary of recorded eruptions (mainly from Smith, but also other sources)

1940

??no mentions between 1940 and 1966

1966

twelfth since 1880

1979

recorded by Lyogello, but not in other sources

1983 Jan-Mar

"moderate" ash

1984 May

two vents in North side

1984 Aug

crust over inner surface of crater

1985 Feb

boiling lake

1986

3 small peaks

Extract ID: 3708

See also

Smith, Anthony The Great Rift: Africa's Changing Valley, 1988

'three small peaks'

In 1986 there were 'three small peaks', each about 7.5 metres high. In other words, although without a major eruption, the volcano is far from dead. It simmers, it bubbles, it rumbles occasionally, and forever changes its appearance, particularly on that crater floor. Many believe that Lengai is due for another eruption, an exciting event for all save those present at the time with a most unenviable ring-side seat.

Extract ID: 768
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