Home – Home – Jornals – Russian Geology and Geophysics 2006 number 1

New data on tectonics, magmatism, deposition history, paleomagnetism, and geochronology were used to reconstruct the geodynamic evolution of Caledonides and Hercynides, and the related late Baikalides, in a large orogenic area on the southern periphery of the Siberian craton. The study region includes the Baikal-Patom fold-thrust belt and a collage of terranes in the south which accreted to Siberia in the latest Riphean and in the Early and Late Paleozoic. The terranes are fragments of Riphean and Paleozoic island arcs, active continental margins, oceanic crust (ophiolites, seamounts, etc.), turbidite basins, continental slopes and shelves or belong to cratonic terranes (microcontinents) composed of Precambrian basement rocks. The accretion provided southward (in present coordinates) growth of the continental lithosphere of the craton. The accreted terranes were subjected to large-scale strike-slip faulting, repeated deformation, collisional and within-plate plutonism, and metamorphism of different temperature facies.