Structural geologists have long used the macroscopic and microscopic geometry of the fabric of deformed rocks to determine a sequence of tectonic and metamorphic events, finite strain, or sense of shear. However, the geometry of deformed rocks stores a wealth of quantitative information that can be retrieved using the characteristic geometry of some microstructures. Since such microstructures can be used to determine parameters such as stress, temperature etc., we introduce the term natural microgauges. This chapter gives some examples of presently available microgauges and possible future developments, and will hopefully stimulate readers into research on the subject. Microgauges can only be calibrated if the effects of all parameters that cause their geometric evolution are understood. At present, the study of microgauges is in its infancy and much theoretical and experimental work remains to be done. Finally, the limits and problems of the methods are indicated since the creation of numbers from rocks tends to give a (possibly) misplaced sense of confidence.
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- Natural Microgauges
Prof. Dr. C. W. Passchier
Prof. Dr. R. A. J. Trouw
- Springer Berlin Heidelberg