During the Neoproterozoic West-Gondwana assembly, Araçuaí belt together with its African counterpart, West Congo belt, formed a confined orogenic system between São Francisco and cratons. As result, widespread magmatism took place from ca. 630 to 480 Ma at finishing 530 480Ma post-collisional period. The Alto Chapéu pluton is one of numerous intrusions emplaced during this event. In order inves...

Abstract The Southern Rocky Mountains first rose during the Laramide Orogeny (ca. 75–45 Ma), but today's mountains and adjacent Great Plains owe their current height to later epeirogenic surface uplift. When why epeirogeny affected region are controversial. Sedimentation histories in two central Colorado basins, South Park–High Park Denver shifted at 56–54 Ma from an orogenic pattern, suggestin...

Paleocene plutons on Kodiak Island, in Alaska, contain host-rock xenoliths that have undergone varying degrees of fragmentation, metamorphism and assimilation in the surrounding granitoid rocks, and therefore provide an excellent natural laboratory to study the processes of xenolith fragmentation and magma contamination. Kodiak Island has two belts of Paleocene plutons: the Kodiak batholith tha...

Between the western and the eastern parts of the southern Alaskan Sanak–Baranof belt there exist variations in pluton spacing, geochronology, geochemistry and metamorphism. All such characteristics can be explained by increase in heat flux towards the eastern parts of the belt. Despite such differences, the initiation of magmatism propagated eastward at a constant rate of 19 cm/year throughout ...

The Datong pluton, the largest early Palaeozoic granitoid in the Western Kunlun Orogenic Belt (WKOB) in NW China, is a typical appinite-granite complex. It consists of diorites, quartz diorites, monzodiorites, quartz monzodiorites, monzonites, quartz monzonites, syenites, granodiorites and monzogranites. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) zircon U–Pb dating ...

Crystallization coupled with gravity removal of depleted interstitial melt has long been recognized as a mechanism of magma differentiation. Similarly, heat released by synplutonic basaltic magma intrusions has long been recognized as capable of driving convection in granite chambers. Direct evidence of these processes has seldom been described in granites. In the Tavares pluton, we mapped a nu...