Metasomatic reaction phenomena from entrainment to surface cooling: evidence from Mantle Peridotite Xenoliths from Bulgaria
- Marchev, P.
- Arai, S.
- Vaselli, O.
- Costa, F.
- Zanetti, A.
- Downes, Hilary
DOIAbstract
We present a detailed study of the mineralogical and chemical modifications of peridotite xenoliths during magma transport and cooling at the Earth’s surface. The xenoliths are entrained in three small-volume (<1 km3), monogenetic, Miocene–Oligocene, basanite domes in the Moesian Platform, north Bulgaria, arranged along a NNE-directed right-lateral strike-slip fault. The domes show symmetrically decreasing volumes of erupted magma correlated with the size and quantity of the entrained xenoliths, according to their position along the fault. The xenoliths exhibit different degrees of mineralogical and chemical interaction with their host rocks, with the extent of interaction strongly depending on their position in the dome. Xenoliths from the...
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