The Core Zone of the Southeastern Churchill Province, northeastern Laurentia, is a composite of Paleoproterozoic lithotectonic domains assembled in the vise between obliquely colliding Archean Superior and North Atlantic cratons between ca. 1860 and 1810 Ma. Detailed geological and U–Pb geochronological studies of domains in the southern Core Zone highlight significant differences in Archean an...

Although much evidence points to a Late Mesozoic large silicic igneous province in SE South China (SESC), diverse Andean-type and non-Andean-type models have been proposed explain its origins. New age, isotope, trace element data on zircon from wells East Sea (ECS) offshore-onshore tectonomagmatic comparisons allow reassessment of the geodynamic interactions (ca. 200–86 Ma) between Cathaysia-ba...

Abstract Difficulties in dating Mississippi Valley–type (MVT) mineral deposits and the often closely associated dolomitization have led to controversy regarding their origin. We report first radiometric ages for Gorno mining district northern Italy, an example of Alpine subclass MVT deposits. U-Pb hydrothermal carbonates pre- postdating ore-forming event show that base-metal mineralization occu...

Abstract. In the eastern Atlantic Ocean, several volcanic archipelagos are located close to margin of African continent. This configuration has inspired previous studies suggest an important role edge-driven convection (EDC) in generation intraplate magmatism. a companion paper (Manjón-Cabeza Córdoba and Ballmer, 2021), we showed that EDC alone is insufficient sustain magmatism magnitude requir...

The East Kunlun Orogen (EKO) in the northern Tibetan Plateau records two continental collisional orogenic events and magmatism early Paleozoic Mesozoic. However, possible magmatic additions to crust growth of EKO different tectonic stages orogeny have been overlooked. Three phases plutons from Xiangride-Kuhai area east chosen for detailed investigation results are reported here. oldest suite (S...

A total of 17 sphene and 45 zircon fission track ages (FTA) are reported from the Piedmont Province of Pennsylvania, Delaware, and Maryland, the Reading Prong of New Jersey, and the Newark Basin of Pennsylvania. With the exception of one sphene sample, FTA fall within a relatively restricted age range: sphene 190-217 Ma (average 199 Ma) and zircon 143-218 Ma (average 184 Ma). Near concordance o...