Prehnite-pumpellyite facies - Wikipedia
The prehnite-pumpellyite facies is a metamorphic facies typical of subseafloor alteration of the oceanic crust around mid-ocean ridge spreading centres. It is a metamorphic grade transitional between zeolite facies and greenschist facies representing a temperature range of 250 to 350 °C and a pressure range of approximately two to seven kilobars.
葡萄石—绿纤石相 - 百度百科
葡萄石—绿纤石相（prehnite pumpellyite facies）是一种埋藏变质作用中常见的变质相。 地质产状与浊沸石相类似，且常伴生，但深度相对较大，变质温度稍高。
Prehnite-Pumpellyite Facies - an overview - ScienceDirect
The Prehnite-Pumpellyite Facies refers to a metamorphic environment characterized by the persistence of igneous minerals, overlap with zeolite facies, presence of metastable assemblages, and non-equilibrium textures below 300°C.
Prehnite–pumpellyite facies | SpringerLink
The prehnite–pumpellyite facies is a very low-grade mineral facies intermediate between the zeolite and higher-grade facies, and is characterized in sandstones and metavolcanic rocks of appropriate composition by the presence of prehnite and/or pumpellyite in the absence of zeolites, actinolite, lawsonite, or jadeite. Plagioclase is usually ...
Prehnite-pumpellyite facies metamorphism is described in the oceanic-arc basement rocks of Ocean Drilling Program Leg 126, Site 791 in the Sumisu Rift, western Pacific. Chemical variations of pumpellyite, epidote, chlorite, and prehnite are examined and paragenetic relations discussed.
Prehnite-pumpellyite facies | geology | Britannica
In metamorphic rock: Prehnite-pumpellyite facies. Along with the zeolite facies, the prehnite-pumpellyite facies received little attention until about 1950. The first rocks of the facies were described in New Zealand and Celebes. The facies is transitional, bridging the path to the blueschist facies or the greenschist facies. It… Read More
Prehnite-pumpellyite facies - chemeurope.com
The prehnite-pumpellyite facies is a metamorphic facies typical of subseafloor alteration of the oceanic crust around mid-ocean ridge spreading centres. It is a metamorphic grade transitional between zeolite facies and greenschist facies representing a temperature range of 250 to 350 °C and a pressure range of approximately two to seven kilobars.
Common occurrence of prehnite and pumpellyite is newly identified from metabasites of Tobiishi sub-unit in the Kurosegawa belt, Yatsushiro area, Kyushu, where Ueta (1961) had mapped as a greenschist facies area. Prehnite and pumpellyite are closely associated with chlorite, calcite and quartz, and they mainly occur in white
Prehnite and pumpellyite are abundant low-grade metamorphic minerals in the metavolcanic rocks of the Triassic Karmutsen Group central Vancouver Island, B. C. The prehnite and pumpellyite occur as amygdaloidal minerals and alteration products
Transition from the Zeolite to Prehnite-Pumpellyite Facies in the ...
1986年4月1日 · The amygdaloidal metabasites developed in the outer portion of the contact aureole show a progressive metamorphism from zeolite to prehnite-pumpellyite facies. The size of an equilibrium domain is extremely small for these metabasites, and the individual amygdule assemblages are assumed to be in equilibrium.
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