zeolite facies造句

• It is a low-temperature hydrothermal phase occurring in zeolite facies alteration of mafic rocks.
• The zeolite facies is generally considered to be transitional between orogenic regional metamorphism are not required.
• Generally plutonic and volcanic rocks are not greatly affected by zeolite facies metamorphism, although amygdaloidal texture.
• If the illite crystallinity is > 1.0, it corresponds with a metamorphic shallow diagenetic zone or zeolite facies.
• Zeolite facies metamorphism usually results in the production of low temperature clay minerals into higher temperature polymorphs such as kaolinite and vermiculite.
• Illite crystallinity can be used to trace the low grade metamorphic transition from zeolite facies to greenschist facies ( diagenetic zone to epizone ).
• Zeolite facies is considered to start with temperatures of approximately 50-150 癈 and some burial is required, usually 1-5 km.
• If the illite crystallinity values fall in the 0.42-1.0 ?? range, it corresponds with a metamorphic deep diagenetic zone or zeolite facies.
• Zeolite facies is most often experienced by pelitic sediments; rocks rich in aluminium, silica, potassium and sodium, but generally low in iron, magnesium and calcium.
• As the rock enters the submetamorphic field, generally Zeolite facies metamorphism, clay minerals begin to recrystallize into low-temperature metamorphic phyllite minerals such as chlorite, prehnite, pumpellyite, glauconite and so forth.
• Zeolite facies tends to correlate in clay-rich sediments with the onset of a bedding plane foliation, parallel with the bedding of the rocks, caused by alignment of platy clay minerals in a horizontal orientation which reduces their free energy state.