However, the latest belief is that dehydration that occurs at the blueschist-eclogite transition affects most subducted slabs, rather than partial melting.
32.
High-ultrahigh pressure metamorphic path through the zeolite, prehnite-pumpellyite, blueschist, and eclogite facies stability zones of subducted oceanic crust.
33.
But those found in eclogite appear to be made of living things whose carbon atoms were recycled over the ages through the earth's interior.
34.
Eclogite is associated with peridotite in some xenolith occurrences; it also occurs with peridotite in rocks metamorphosed at high pressures during processes related to subduction.
35.
Isotopic studies reveal that many eclogite inclusions are samples of ancient oceanic crust subducted billions of years ago to depths exceeding into the deep kimberlite diamond areas.
36.
It is a major mineral component of eclogite along with pyrope garnet and also occurs in blueschist facies and UHP ( ultrahigh-pressure ) metamorphic rocks.
37.
To get a basalt from melting an eclogite ( i . e .; a rock with basalt composition ) it has to undergo 100 % partial melting.
38.
Unless the eclogite is created in very young oceanic crust, it is cool at the time of initial subduction and so is carried down into the mantle.
39.
Research at Argyle diamond have shown that most stones are of E-type; they originate from eclogite source rocks and were formed under high temperature ~.
40.
In addition, the eclogite residues, formed by the partial melting of the oceanic crust, subsequently became a part of the sub-continental lithospheric mantle.
