Relation between alternations of uplift and subsidence revealed by Late Cenozoic fluvial sequences and physical properties of the continental crust

摘要: Reversals in vertical crustal motion, alternations between uplift and subsidence over time scales of hundreds thousands years or more, have been identified Late Cenozoic fluvial sequences many regions worldwide. They form a class archive that is distinct from the extreme stability observed Archaean cratons monotonic widely other regions. Such are characteristic Early Middle Proterozoic crust, where initial consolidation included development thick ‘root’ mafic material at base crust; present study focuses on localities with this type USA eastern Europe. It has previously suggested basis modelling style behaviour occurs only mobile lower-crustal layer relatively thin. This supports conclusion independent geothermal calculations, which indicate such occur ≤∼7 km thick. An understanding phenomenon, relation to motions induced by surface processes (and thus climate change) general, therefore requires analysis properties dynamics layer; detailed contributes unique information area.