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References (27)
-
J. Guilbert, C. Park (1985)
The geology of ore deposits -
R. Griffiths, J. Fink (1993)
Effects of surface cooling on the spreading of lava flows and domesJournal of Fluid Mechanics, 252
-
R. Keller, M. Fisk, W. White, K. Birkenmajer (1992)
Isotopic and trace element constraints on mixing and melting models of marginal basin volcanism, Bransfield Strait, AntarcticaEarth and Planetary Science Letters, 111
-
G. Heiken, K. Wohletz, J. Eichelberger (1988)
Fracture fillings and intrusive pyroclasts, Inyo Domes, CaliforniaJournal of Geophysical Research, 93
-
N. Bridges (1997)
Ambient effects on basalt and rhyolite lavas under Venusian, subaerial, and subaqueous conditionsJournal of Geophysical Research, 102
-
B. Marsh (1981)
On the crystallinity, probability of occurrence, and rheology of lava and magmaContributions to Mineralogy and Petrology, 78
-
J. Crisp, S. Baloga (1994)
Influence of crystallization and entrainment of cooler material on the emplacement of basaltic aa lava flowsJournal of Geophysical Research, 99
-
S. Bergh, G. Sigvaldason (1991)
Pleistocene mass-flow deposits of basaltic hyaloclastite on a shallow submarine shelf, South IcelandBulletin of Volcanology, 53
-
S. Blake (1990)
Viscoplastic Models of Lava Domes -
G. Walker (1992)
Morphometric study of pillow-size spectrum among pillow lavasBulletin of Volcanology, 54
-
C. Newhall, W. Melson (1983)
Explosive activity associated with the growth of volcanic domesJournal of Volcanology and Geothermal Research, 17
-
G. Hulme (1974)
The Interpretation of Lava Flow MorphologyGeophysical Journal International, 39
-
K. Birkenmajer, M. Delitala, W. Narębski, M. Nicoletti, C. Petrucciani (1986)
Geochronology of Tertiary island-arc volcanics and glacigenic deposits, King George Island, South Shetland Islands (West Antarctica)Bulletin of the Polish academy of sciences. Earth sciences, 34
-
T. Gregg, J. Fink (1995)
Quantification of submarine lava-flow morphology through analog experimentsGeology, 23
-
R. Griffiths, J. Fink (1992)
Solidification and Morphology of Submarine Lavas: A Dependence on Extrusion RateJournal of Geophysical Research, 97
-
P. Long, B. Wood (1986)
Structures, textures, and cooling histories of Columbia River basalt flowsGeological Society of America Bulletin, 97
-
H. Moore, G. Schaber (1975)
An estimate of the yield strength of the Imbrium flows., 1
-
N. Bridges (1995)
Submarine analogs to Venusian pancake domesGeophysical Research Letters, 22
-
G. Thompson (1991)
Metamorphic and hydrothermal processes: basalt—seawater interactions -
J. Smellie, I. Skilling (1994)
Products of subglacial volcanic eruptions under different ice thicknesses: two examples from AntarcticaSedimentary Geology, 91
-
M. Stasiuk, C. Jaupart, R. Stephen, J. Sparks (1993)
Influence of cooling on lava-flow dynamicsGeology, 21
-
P. Schiffman, G. Fridleifsson (1991)
The smectite–chlorite transition in drillhole NJ‐15, Nesjavellir geothermal field, Iceland: XRD, BSE and electron microprobe investigationsJournal of Metamorphic Geology, 9
-
R. Sparks, H. Pinkerton (1978)
Effect of degassing on rheology of basaltic lavaNature, 276
-
M. Ryan, C. Sammis (1981)
The glass transition in basalt.Journal of Geophysical Research, 86
-
J. Jones (1970)
Intraglacial Volcanoes of the Laugarvatn Region, Southwest Iceland, IIThe Journal of Geology, 78
-
G. Lofgren (1980)
Experimental studies on the dynamic crystallization of silicate melts -
C. Manley (1992)
Extended cooling and viscous flow of large, hot rhyolite lavas: implications of numerical modeling resultsJournal of Volcanology and Geothermal Research, 53
- Publisher
- Springer Journals
- Copyright
- Copyright © 1998 by Springer-Verlag Berlin Heidelberg
- Subject
- Earth Sciences; Geology; Geophysics/Geodesy; Mineralogy; Sedimentology
- ISSN
- 0258-8900
- eISSN
- 1432-0819
- DOI
- 10.1007/s004450050189
- Publisher site
- See Article on Publisher Site
Abstract
On King George Island during latest Oligocene/earliest Miocene time, submarine eruptions resulted in the emplacement of a small (ca. 500 m estimated original diameter) basalt lava dome at Low Head. The dome contains a central mass of columnar rock enveloped by fractured basalt and basalt breccia. The breccia is crystalline and is a joint-block deposit (lithic orthobreccia) interpreted as an unusually thick dome carapace breccia cogenetic with the columnar rock. It was formed in situ by a combination of intense dilation, fracturing and shattering caused by natural hydrofracturing during initial dome effusion and subsequent endogenous emplacement of further basalt melt, now preserved as the columnar rock. Muddy matrix with dispersed hyaloclastite and microfossils fills fractures and diffuse patches in part of the fractured basalt and breccia lithofacies. The sparse glass-rich clasts formed by cooling-contraction granulation during interaction between chilled basalt crust and surrounding water. Together with muddy sediment, they were injected into the dome by hydrofracturing, local steam fluidisation and likely explosive bulk interaction. The basalt lava was highly crystallised and degassed prior to extrusion. Together with a low effusion temperature and rapid convective heat loss in a submarine setting, these properties significantly affected the magma rheology (increased the viscosity and shear strength) and influenced the final dome-like form of the extrusion. Conversely, high heat retention was favoured by the degassed state of the magma (minimal undercooling), a thick breccia carapace and viscous shear heating, which helped to sustain magmatic (eruption) temperatures and enhanced the mobility of the flow.
Journal
Bulletin of Volcanology – Springer Journals
Published: Feb 4, 1998