Results 201 to 210 of about 14,904 (246)

Products of Ignimbrite Eruptions

Geology, 1973
Many ignimbrite flow units show a reverse grading of large pumice clasts and a normal grading of large lithic clasts. Each ignimbrite flow unit has a basal layer finer grained than the body of the ignimbrite, with a ground surge deposit commonly underlying the ignimbrite, and a fine ash-fall deposit commonly overlying it.
R.S.J. Sparks, S. Self, G.P.L. Walker
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The Kizilkaya ignimbrite — an unusual low-aspect-ratio ignimbrite from Cappadocia, central Turkey

Journal of Volcanology and Geothermal Research, 1996
Abstract The 4.3-m.y.-old medium-volume low-aspect-ratio Kizilkaya ignimbrite (50–100 km3 DRE) is one of the most widespread in the Cappadocian Volcanic Province covering about 8500–10,600 km2. The ignimbrite rests on a relatively fine-grained fan of Plinian pumice-fall deposit (Md of 1.0–1.80 mm in proximal locations).
R. Schumacher, U. Mues-Schumacher
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Experimental aqueous fluidization of ignimbrite

Journal of Volcanology and Geothermal Research, 2001
Abstract Experiments were carried out on the aqueous fluidization behaviour of ignimbrite and the associated formation of fluid-escape pipes. The starting material was an ignimbrite that had been saturated with water under vacuum until 80±15% of the vesicles were filled.
Roche, Olivier, Druitt, Timothy H., Cas, R   +2 more
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Ignimbrite in Central Kelantan, Malaya

Geological Magazine, 1967
AbstractThe presence of ignimbrite is described for the first time in Malaya. The field relations and a detailed study of the petrography support the interpretation that the 15-mile ridge outcropping in Central Kelantan, Malaya, is a thick “dyke” of ignimbrite which plugs an old feeding fissure.
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Chapter 5 Interpreting ignimbrites lithofacies

Geological Society, London, Memoirs, 2002
Abstract This chapter presents an approach for ignimbrite description and interpretation. It draws on field, granulometric and fabric data from published descriptions of ignimbrites. To describe ignimbrites, we adopt a non-genetic lithofacies scheme (Table 5.1). This avoids possible connotations of 'ideal' sequences or of specific emplacement
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Zonal schemes in ancient ignimbrites

Geological Magazine, 1971
SummaryZonal arrangements in ancient ignimbrites have usually been interpreted as a reflection of variations in welding. Detailed study of two Lower Palaeozoic ignimbrites from Newfoundland demonstrates that crystallization zones can also be recognized and that in some cases it is these zones which are responsible for the gross features of the cooling ...
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Emplacement of Taupo ignimbrite

Nature, 1997
W. Brian Dade, Herbert E. Huppert
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Minero-petrographical, physical, and mechanical properties of moderately welded ignimbrite as a traditional building stone from Uşak Region (SW Turkey)

Arabian Journal of Geosciences, 2019
T. Koralay, S. B. Çelik
semanticscholar   +1 more source

Kenya Ignimbrites

Nature, 1962
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ignimbrite, n.

2023
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