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Microstructures in low temperature dolomites
Author(s) -
Reeder R. J.,
Wenk H. R.
Publication year - 1979
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl006i002p00077
Subject(s) - dolomite , microstructure , geology , superstructure , sedimentary rock , reflection (computer programming) , electron diffraction , phase (matter) , electron microscope , mineralogy , diffraction , scanning electron microscope , geochemistry , materials science , optics , chemistry , physics , composite material , oceanography , organic chemistry , computer science , programming language
Electron microscopy of sedimentary dolomite reveals heterogeneous microstructures on a 100 ‐ 300Å scale which we interpret as compositional modulations. Electron diffraction patterns contain a new type of superstructure reflection which effectively doubles the a axis. These findings suggest the presence of a new phase in low temperature calcian dolomite rocks.