Eruptive phenomena at all scales, from hydrothermal geysers to flood basalts, can potentially be initiated or modulated by external mechanical perturbations. We present evidence for the triggering of magmatism on a global scale by the Chicxulub meteorite impact at the Cretaceous-Paleogene (K-Pg) boundary, recorded by transiently increased crustal production at mid-ocean ridges. Concentrated pos...

The Laramide orogeny is the Late Cretaceous to Palaeocene (80^55 Ma) orogenic event that gave rise to the Rocky Mountain fold and thrust belt in Canada, the Laramide block uplifts in the USA, and the Sierra Madre Oriental fold and thrust belt in Mexico. The leading model for driving Laramide orogenesis in the USA is flat-slab subduction, whereby stress coupling of a subhorizontal oceanic slab t...

The co-existence of Cretaceous adakitic and A-type granitoids in southern Tibet can offer fundamental constraints on subduction the Neo-Tethyan oceanic plate associated crustal growth processes, if their petrogenetic relationships are understood. Here, we report whole-rock geochemistry, zircon U-Pb geochronology, situ Hf isotopes trace elements from Chanang intrusive suite, including Zeyu Cuoji...

A Robust tectonic reconstruction of the Philippine Sea Plate around ∼52 Ma is a prerequisite in understanding process subduction initiation and establishment Izu-Bonin-Mariana arc. This study investigates origins timing basin formation still poorly understood oldest part northern plate. We have established that andesitic magmatism form Northern volcanics widely distributed across this area. It ...

The subsidence history of forearc and back-arc basins reflects the relationship between subduction kinematics, mantle dynamics, magmatism, crustal tectonics, surface processes. distinct contributions these processes to topography variations active margins during initiation, oceanic subduction, collision are less understood. We ran 2D elasto-visco-plastic numerical models including hydration sho...

Abstract Origins of early Paleozoic metabasites (granulites and amphibolites) their host metasedimentary rocks in the Dunhuang block, NW China, are addressed by new geochronological geochemical data. The show back-arc basalt–like features, marked high Zr/Nb ratios Zr-Hf troughs, but they can be classified into two groups based on dissimilar protolith ages distinct Nd signatures. Most group I me...