Structures and geodynamics of the Mongolian tract of the Central Asian Orogenic Belt constrained by potential field analyses

A multidisciplinary approach integrating potential field analysis with geological and geochemical data provides new insights into the understanding of crustal structure evolution Mongolian collage. Magnetic gravity demonstrate inconsistency between geologically defined terranes geophysical domains in southwestern part The combination modelling whole rock geochemistry isotopic mapping Carboniferous–Permian granitoids indicates presence a homogeneous lower crust composed felsic to intermediate juvenile material beneath geophysically heterogeneous upper crust. This feature is interpreted as result trench-directed emplacement an arc type underplating deformed Paleozoic oceanic also confirmed occurrence two orthogonal late Devonian Permian–Triassic deformation fabrics at scale prominent magnetic highs correspond tectono-metamorphic magmatic provinces. anomalies highlight periodicity signal correlating alternating high low strain zones, forming zone major wrapping around hinge orocline. geometry kinematics dextral sinistral transpressive faults are explained from reactivation zones Cenozoic stress field. • Potential do not correlate CAOB. Geophysics determines supra-crustal Mesozoic fabrics. identify