Hydrothermal systems and volcano geochemistry




The upward intrusion of magma from deeper to shallower levels beneath volcanoes obviously plays an important role in their surface deformation. This chapter will examine less obvious roles that hydrothermal processes might play in volcanic deformation. Emphasis will be placed on the effect that the transition from brittle to plastic behavior of rocks is likely to have on magma degassing and hydrothermal processes, and on the likely chemical variations in brine and gas compositions that occur as a result of movement of aqueous-rich fluids from plastic into brittle rock at different depths. To a great extent, the model of hydrothermal processes in sub-volcanic systems that is presented here is inferential, based in part on information obtained from deep drilling for geothermal resources, and in part on the study of ore deposits that are thought to have formed in volcanic and shallow plutonic environments.

Publication type Book chapter
Publication Subtype Book Chapter
Title Hydrothermal systems and volcano geochemistry
Chapter 10
DOI 10.1007/978-3-540-49302-0_10
Year Published 2007
Language English
Publisher Springer-Verlag
Publisher location Berlin
Contributing office(s) Volcano Hazards Program
Description 9 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Volcano deformation--Geodetic monitoring techniques
First page 323
Last page 341
Online Only (Y/N) N
Additional Online Files (Y/N) N
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