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Dolomitization

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dolomitization [‚dō·lə·məd·ə′zā·shən]
(geology)
Conversion of limestone to dolomite rock by replacing a portion of the calcium carbonate with magnesium carbonate.
Dolomitization 

the process of enriching calcareous silt (sediment) or limestone with dolomite through the substitution of MgCO3 for part of the CaCO3. There are two types of dolomitization: diagenetic, which occurs in silt during the process of its conversion into sedimentary rock, and epigenic, which occurs in already solidified limestone. Epigenic dolomitization is caused by the action of subterranean waters enriched with magnesium, as they pass through strata of dolomite, ultrabasic igneous rock, and so forth. A complete substitution of dolomite for the calcite rarely oc-curs with these secondary limestone changes. Usually dolomitized limestones are formed.
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Dissolution, nucleation and growth of crystallites are common phenomena during dolomitization processes, and both porosity and texture can fluctuate in the evolution of the rocks.
Modeling of multiscale porous media by Biswal, Bibhu; Oren, Pal-Eric; Held, Rudolf J.; Bakke, Stig; Hilfer, Rudolf / Image Analysis and Stereology
In addition, secondary dolomitization occurs as large or local stratiform bodies, e.
Multiply remagnetized Silurian carbonate sequence in ... by Preeden, Ulla; Plado, Juri; Mertanen, Satu; Puura, Vaino / Estonian Journal of Earth Sciences
The next zone consisted of jointed and altered bedrock with oxidization of oil shale, dolomitization of limestone intercalations and weak sulfide mineralization (pyrite, marcasite, sphalerite, galena) with vein dolomite and calcite.
Influence of tectonic dislocations on oil shale mining in the Estonia ... by Sokman, K.; Kattai, V.; Vaher, R.; Systra, Y.J. / Oil Shale
 
 
 
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