Morphometric study of pillow-size spectrum among pillow lavas

@article{Walker1992MorphometricSO,
  title={Morphometric study of pillow-size spectrum among pillow lavas},
  author={George Patrick Leonard Walker},
  journal={Bulletin of Volcanology},
  year={1992},
  volume={54},
  pages={459-474}
}
  • G. Walker
  • Published 1992
  • Geology
  • Bulletin of Volcanology
Measurements of H and V (dimensions in the horizontal and vertical directions of pillows exposed in vertical cross-section) were made on 19 pillow lavas from the Azores, Cyprus, Iceland, New Zealand, Tasmania, the western USA and Wales. The median values of H and V plot on a straight line that defines a spectrum of pillow sizes, having linear dimensions five times greater at one end than at the other, basaltic toward the small-size end and andesitic toward the large-size end. The pillow median… Expand
Emplacement of pillow lavas from the ~ 2.8 Ga Chitradurga Greenstone Belt, South India: A physical volcanological, morphometric and geochemical perspective
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References

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Comparative Morphology of Ancient and Modern Pillow Lavas
Pillow lava is a common feature of volcanic stratigraphy throughout geologic time. A comparison is made between the morphology of oceanic pillows from the FAMOUS area of the Mid-Atlantic Ridge,Expand
The nature and possible origin of the pillow lavas and hyaloclastite breccias of King Island, Australia
  • M. Solomon
  • Geology
  • Quarterly Journal of the Geological Society of London
  • 1968
Basaltic pillow lavas and breccias of possible Cambrian age are exposed in the south-east of King Island. Pillow flows and massive flows generally occur at the base of the succession and are overlainExpand
Origin of pillow lavas
General Characters of Pillow Structure The structure here called pillow lava has been variously described as cushion-like, sack-like, globular, spheroidal, ovoid, egg-shaped, ellipsoidal, lenticular,Expand
Multiple-rind structure in pillow lava as an indicator of shallow water
Multiple-rind structure is common among shallow-water pillows with diameters larger than about 1 m in Oamaru, New Zealand, on the Columbia Plateau (USA), and elsewhere. A rind consists ofExpand
Pseudo-pillow lavas in the Aso Caldera, Kyushu, Japan
Subaqueous dacite lavas were found in three older central cones in the northern part of the Aso caldera basin, Kyushu. The upper limit of distribution of the subaqueous lavas is about 510m above seaExpand
Pillow lava flows: Isolated sacks or connected tubes?
Observations in the Montgenevre Massif (French-Italian Alps) and in several other pillow basalt localities indicate that most pillowy flows are not made up of isolated spheres or sacks. In sectionsExpand
Relationship between the chemistry and axial dimensions of some shallow water pillow lavas of alkaline olivine basalt-and olivine tholeiitic composition
The axial ratio of basalt pillows in some shallow water pillow lava sequences from Azores and Iceland, is defined as V/H, where V and H represent the vertical and horizontal axes in cross sectionExpand
Spreading Cracks on Pillow Lava
Pillows commonly grow when newly introduced lava causes the pillow to expand and crack its outer crust. As the crack opens, lava solidifies and attaches itself to the trailing edges of the outwardExpand
Subglacial volcanics — on the control of magma chemistry on pillow dimensions
Abstract Axial dimensions, glass thicknesses and plunges of 822 Icelandic pillows of olivine tholeiitic to andesitic compositions are presented. The pillows formed during subglacial volcanicExpand
Ultrathin lava layers exposed near San Luis Obispo Bay, California
Sequences of extraordinarily thin (1–5 cm thick) lava layers, resembling individual lava flows, are interbedded with Jurassic and Cretaceous pillowed lava flows near San Luis Obispo Bay on theExpand
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