epidotization


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epidotization

[‚ep·ə‚dōd·ə′zā·shən]
(geology)
The introduction of epidote into, or the formation of epidote from, rocks.
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References in periodicals archive ?
Graves (1990) further documented the variety of rock types and noted the high degree of epidotization, quartz veining, and cataclasis, as well as the presence of mylonitic rocks.
From inside out, this zoning includes a potassic alteration zone, a quartz-sericitization zone, a kaolinization zone, and a porphyritic zone (chloritization, epidotization, and carbonate alteration assemblages).
The intrusion of quartz veins and alteration (mainly epidotization) and leaching of sulfides are common in host rocks along these veins.
Wall-rock alteration is intense and consists of silicification, sericitization, chloritization, carbonatization, and kaolin, followed by epidotization with pyrophyllite.