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The migration of gas‐filled brine inclusions in rock salt under a temperature gradient
Author(s) -
Müller E.
Publication year - 1985
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170200420
Subject(s) - halite , brine , fluid inclusions , temperature gradient , inclusion (mineral) , crystal (programming language) , geology , mineralogy , melt inclusions , crystal growth , chemical physics , crystallography , chemistry , thermodynamics , meteorology , physics , quartz , gypsum , paleontology , computer science , programming language , olivine
In natural halite crystals two sorts of inclusions will move if there exists a temperature gradient. The direction of moving brine inclusions is orientated towards the heat source. Brine inclusions which additionally contain more than 10% gas move towards the cold end of a specimen. This model is well known but detailed information about the migration mechanism of these so‐called SORBY inclusions have been lacking in literature so far. In this paper it will be demonstrated that SORBY inclusions having a diameter of up to 20 micrometers can move undisturbed through the crystal. SORBY inclusions with a diameter of more than 20 micrometers are fixed and form droplets with their tips directed towards the cold side of the specimen. Later when the tips have grown the inclusions will emit a new daughter inclusion which can move through the crystal. The velocity of migration depends on the generation of daughters. Extended kinds of SORBY inclusions are stable for a long time. However, these can decay into many individuals which will move through the crystal like the others.