Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

understood. This article focuses on Catalonia, where local glass production is documented as early as the

13th century, but little is known about the production of window glass. This study analyses a collection of stained

glass fragments from Girona Cathedral, dating from the 13th to the 16th century, some of which is the work of

renowned master glassmakers. The data obtained is compared with contemporary stained glass documented

from other parts of Europe, and with a collection of 15th and 16th century archaeological window glass from

Barcelona. The data is also contrasted with historical documentation on glass production in Catalonia. The findings

reveal that the glass from Girona from the 13th and 14th centuries is of the potassium-lime type, similar to

that produced in the workshops of north-western France. By the late 14th and 15th centuries, the composition

aligns more closely with that of north-eastern France. In the 16th century, however, the glass changes to a sodalime

composition, similar to the glass found in Barcelona, suggesting a transition from central European to

Mediterranean sources, and indicates a change in the raw materials involving the use of soda-lime plant ash instead

of potassium-lime forest ash. These results indicate that the production of window glass shifted from France

to Barcelona at the close of the 15th century.

 of + 3.9 to + 7.0, unradiogenic 87Sr/86Sri of 0.7036–0.7044). Younger (c. 375–350  Ma) Fe-poor and Fe-rich dismembered amphibolite sheets show an EMORB character typical of melts resulting from the interaction of a subduction-modified depleted lithospheric mantle with a mantle plume (moderate LILE and HFSE, highly positive EiNd

 of + 6.4 to + 9.2, variable 87Sr/86Sri of 0.7037–0.7068). Their chemistry marks the arrival of a mantle plume in an active margin setting far behind the magmatic arc. The Gashun Nuur Complex belongs to a vast (> 300,000  km2) mosaic of Devonian magmatic provinces which encompass the Altai suprasubduction, Altai–Sayan intracontinental and Mongol–Okhotsk oceanic domains. The studied middle Devonian–Tournaisian magmatic event is interpreted as the surface expression of hydrous plume(s) developed above a dehydrating flat-slab resting upon the lower mantle, at the mantle transition zone. The flat slab favoured the retreat of the trench causing extension in the overriding lithosphere. In the Gashun Nuur Complex, heat and fluids from mantle-derived intrusions induced extensive partial melting of a fertile Cambrian–Ordovician volcanic–sedimentary accretionary wedge, promoting a wide-rift mode of extension. Ascent and emplacement of granitic magmas to the middle crust left a still partially hydrated lower crust with an intermediate composition. This process of crustal differentiation may have played an important role in the stratification and stabilisation of the continental crust through the Earth’s history.