Abstract
A series of recently and previously collected peridotite xenolith samples from the western Pannonian Basin has intensively been studied using electron microprobe techniques and a thermo-barometric approach in order to obtain relevant information about the thermal evolution of the lithosphere. Most of the xenoliths have chemically homogeneous mineral phases reflecting ambient equilibrium P–T conditions. The results indicate hot and thinned lithosphere in agreement with heat flow, seismic and magnetotelluric properties of the area. A strong relationship has been observed between deformation and temperatures of peridotites, in as much as coarse-grained protogranular and poikilitic xenoliths have high temperatures (up to 1175°C), whereas fine-grained equigranular and mosaic xenoliths have low temperatures (800–900°C). This picture suggests that diapiric uplift of hot mantle material into a cooler uppermost mantle has probably taken place.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call