Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-25T04:59:01.646Z Has data issue: false hasContentIssue false

The Geology of the Katmaian Volcanics of the Upper Oramutia Valley, Kenya

Published online by Cambridge University Press:  01 May 2009

C. M. Bristow
Affiliation:
Dept. of Geology, University of Exeter.

Abstract

The Oramutia volcanics consist of a group of ignimbrites overlain by pumice tuffs, which lie in a fault formed valley on the eastern flank of the main Kenya rift valley. The presence of a dyke of ignimbrite suggests that the “claystone ” ignimbrite of this area was erupted from fissures. A similar explanation probably applies to the pumice tuffs. These volcanics are therefore the product of Katmaian type eruptions.

Type
Articles
Copyright
Copyright © Cambridge University Press 1962

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bemmelen, R. W. van, 1961. Volcanology and Geology of Ignimbrites in Indonesia, North Italy, and the U.S.A. Geol. en Mijnb., 23, 399411.Google Scholar
Cotton, C. A., 1944. Volcanoes as Landscape Forms. Christchurch, N.Z., 183215.Google Scholar
Fenner, C. N., 1920. The Katmai Region, Alaska, and the Great Eruption of 1912. J. Geol., 28, 569606.CrossRefGoogle Scholar
Fenner, C. N., 1923. The Origin and Mode of Emplacement of the Great Tuff Deposit of the valley of Ten Thousands Smokes. Nat. geogr. Soc., Katmai Series.Google Scholar
McCall, G. J. H., Temperley, B. N., and Bristow, C. M., 1962. The Geology of the Nakaru—Thomson's Falls—Lake Hannington Area. Rep. geol. Surv. Kenya (to be published).Google Scholar
Rutten, M. G., 1959. Ignimbrites or Fluidized tuff flows on some Mid-Italian volcanoes. Geol. en Mijnb. 21, 396–9.Google Scholar
Steiner, A., 1960. Origin of Ignimbrites of the North Island, New Zealand: A new Petrogenetic Concept. Bull. geol. Surv. N.Z. No. 68.Google Scholar
Sykes, H. L., 1939. Notes on the geology of the Country surrounding Nairobi. Rep. geol. Surv. Kenya, pp. 22.Google Scholar