Abstract To guide future exploration, this predominantly field based study has investigated the structural evolution of central Kiruna area, type locality for iron oxide-apatite deposits that stands a significant amount European ore production. Using combination geologic mapping focusing on structures and stratigraphy, petrography with focus microstructures, X-ray computed tomography imaging su...

Graphitization degrees and temperatures of the regional metamorphism in Central Eastern Rhododpes have been determined by values structural parameter d002 (Å) graphite graphite-bear¬ing marbles shists, from Vacha Madan-Erma Reka areas (Madan lithotectonic unit), Ardino–Nedelino area (Startsevo Chernichevo–Boturche (Byala unit). Equations different authors, formulated between 1951 2021, were use...

Chloritoid and kyanite coexist in metapelites from the high-pressure/low-temperature Massa Unit Alpi Apuane metamorphic complex (Northern Apennines, Italy). The composition of chloritoid is extremely variable throughout Unit. Fe-chloritoid occurs association with hematite-free, graphite-bearing schists, whereas strongly zoned Fe-Mg found hematite kyanite. We investigated effect different bulk F...

In central Victoria, inherited zircon in Devonian igneous rocks and detrital metasedimentary country an amphibolite-facies xenolith show that Mesoproterozoic parts of the underlying Selwyn Block cannot be source for all silicic magmas. Zircon inheritance S-type samples reveals significant thermal events at 525–425 Ma 1200–1100 Ma. Both S- I-type have prominent age peaks 420–410 Ma, which record...

Variably oriented dolerite intrusions outcrop in the Albany–Fraser Orogen along south coast of Western Australia with previously unknown ages but where previous studies interpreted Mesoproterozoic to Cretaceous emplacement. Here, we place temporal constraints on seven mafic across ∼150 km using zircon U–Pb, apatite and plagioclase 40Ar/39Ar geochronology, coupled whole-rock major trace-element ...

Abstract. Deformation of polymineralic aggregates can be accommodated by viscous granular flow, a process mediated the interplay among intracrystalline plasticity and dissolution–precipitation, each active in specific minerals under given P–T conditions. Some rock-forming like quartz feldspars have been intensively studied terms deformation processes. Instead, behavior epidote its role during f...

We discuss the assembly and tectonochronology of Cycladic Blueschist Unit (CBU) in central Aegean Sea region, Greece, as a composite, subduction-related, high-pressure (blueschist to eclogite facies) stack nappes. Our work is based on review geochronologic data from islands Tinos, Syros Sifnos. In addition, we present large set 34 new, internally consistent Rb-Sr multimineral isochron age these...

Abstract. Retrograde metamorphic rocks provide key insights into the pressure–temperature (P–T) evolution of exhumed material, and resultant P–T constraints have direct implications for mechanical thermal conditions subduction interfaces. However, constraining retrograde has historically been challenging resulted in debate about experienced by these rocks. In this work, we combine elastic therm...

The monzogranites and syenogranites of the Early Devonian (Emsian), post-tectonic, high-level, S-type Wilsons Promontory batholith contain magmatic garnet cordierite, in addition to biotite, as well biotite–quartz pseudomorphs after early orthopyroxene. forms southern tip Australian mainland consists four penecontemporaneous plutons, emplaced at shallow crustal depth, intruding Ordovician Lower...

The spatial distribution of greenschist-facies retrograde reaction products in metabasic gneisses from Iona, western Scotland, has been investigated. may be broadly accounted for by a single reaction, but their different and temporal development indicates that series reactions occur with significantly scales metasomatic transfer. After initial fluid influx linked to deformation-induced high per...