offset) indicating the probable presence of reservoirs with significant porosity in zones of hydrothermal dolomitization
within the Sayabec Formation.
and quartz component increase 10 cm above the bentonite, however, this sample is still highly calcitic.
In parts of Minnesota and western Wisconsin, diagenetic processes such as quartz syntaxial and potassium feldspar epitaxial overgrowths, hematite precipitation, dolomitization
, calcite precipitation, calcite dissolution, and a second hematite precipitation have variously altered the original texture of the sands of the Jordan Formation (Thomas, 1992; Runkel and Steenberg, 2012).
is one of diagenetic feature has been affected on this microfacies.
The diagenetic processes that have affected the Arab-D reservoir include dolomitization
, leaching and recrystallization, cementation, compaction and fracturing.
of the Lower Ordovician Ellenburger Group, West Texas.
and chertification of the Early Eocene Rus Formation in Abu Dhabi, UAE.
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.
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.
Middle Cambrian brine seeps on the Kicking Horse Rim and their relationship to talc and magnesite mineralization and associated dolomitization
, British Columbia, Canada.
In the lower part of the weathering profile primary ooidal textures have been destroyed by dolomitization
and small doubly terminated quartz crystals have developed through silicification.
The Estonian part of the Baltic Devonian basin is unique as here the alternating carbonate, siliciclastic, and mixed carbonate-siliciclastic rocks have been influenced by subsequent diagenetic dolomitization
episodes during which a number of minerals (feldspar, pyrite, goethite, gypsum) were formed.