Deformation-Enhanced Fluid Transport in the Earth's Crust and Mantle

ISBN-13: 9780412752902 / Angielski / Twarda / 1997 / 334 str.

M. Holness; Marion Holness; M. B. Holness

Opis

30% discount for members of The Mineralogical Society of Britain and Ireland The movement of fluids through rocks has profound consequences for the transport of heat and matter within the Earth. Recently, considerable effort has been expended in determining the mechanisms and pathways of geological fluid flow, with much of this research concentrated on the effects of deformation on rock permeability. Although it is well known that fractures can act as conduits for fluid transport (as evidenced by abundant mineral-fined veins and sheet-like igneous intrusions), the role of ductile deformation has now been recognised as an important factor controlling rock permeability in environments as diverse as the mantle, the deep crust, and shallow crustal shear zones.
This book brings together review and research articles united by the theme of deformation-enhanced fluid transport, with the aim of emphasizing the many common roots of this important body of work. Subjects covered include the movement of basaltic melts in the mantle; the segregation, ascent and emplacement of granitic melts in the crust; the flow through the crust of volatile fluids produced during metamorphic events; and the movement of aqueous fluids through fractured rocks near the Earth's surface.
Deformation-Enhanced Fluid Transport in the Earth's Crust and Mantle will appeal to all geoscientists interested in the movement of fluids through the Earth. It will prove an invaluable reference work for those working in the field and will provide i useful introduction to this wide-ranging and rapidly evolving area of research for non-specialists.

Spis treści

Introduction. The permeability of non-deforming rock. Experimental investigation of the rheology of partially molten peridotite at upper mantle pressures and temperatures. Melt distribution in partially molten peridotites: implications for permeability and melt migration in the upper mantle. The influence of deformation on the extraction of crustal melts: a consideration of the role of melt-assisted granular flow. The role of deformation in the movement of granitic melts: views from the laboratory and the field. Ascent mechanisms of granitic magmas: causes and consequences. Ascent and emplacement of granitic plutonic complexes in subduction-related extensional environments. Lithological, structural and deformation controls on fluid flow during regional metamorphism. The geochemistry of volatile fluid flow in shear zones. Segregation veins: evidence for the deformation and dewatering of a low grade metapelite. Aqueous fluid flow in fractured rocks at shallow levels in the earth's crust: an overview.