Dear Janos,
I am not sure that it is relevant to your question, but I suggest you to look at studies of fluid inclusions, which might provide an assessment of whether minerals are affected by intragranular or intergranular microfracturing. We performed such analysis on different rock types including quartz and/or calcite that might be of interest to you.
Here are links to the published papers (that I can provide upon request):
doi:10.1111/jmg.12023
http://dx.doi.org/10.1016/j.jog.2016.07.001
http://dx.doi.org/10.1016/j.chemgeo.2016.12.005
Any feedback will be appreciated.
Confined regards,
Olivier.
PS: I take this opportunity to ask John Dewey to send me his mail address at [log in to unmask] (I tried to contact him without success).
-----Message d'origine-----
De : Tectonics & structural geology discussion list [mailto:[log in to unmask]] De la part de Janos Urai RWTH
Envoyé : jeudi 26 mars 2020 11:24
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Objet : intragranular versus intergranular microfracturing in rocks
Dear colleagues,
we are studying Mode I fractures in limestone using BIB-SEM and see that the fracture is partly intracrystalline (nice flat and stepped calcite cleavage) and partly intercrystalline (broken grain boundaries and pores).
I tried to find papers about intragranular versus intergranular fracture surfaces and the ratio between intra- and intercrystalline microcracking in different rocks but was not very successful - may I ask your help in finding the relevant literature?
Thanks in advance
kind regards, Janos
Prof. Dr. Janos L. Urai
RWTH Aachen University
e-mail: [log in to unmask]
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