A review on deformation structures of different terranes in the Precambrian Aravalli-Delhi Mobile Belt (ADMB), NW India: Tectonic implications and global correlation

The Aravalli-Delhi Mobile Belt (ADMB) in the northwestern part of Indian Shield represents final stage a complex tectonic evolution witnessed by recognition three distinct orogenies that have resulted northwestward accretion terranes belonging to Archaean Neoproterozoic ages. In this contribution, review deformation structures different is discussed with their implications and global correlation other supercontinent assemblies. west, NE-SW trending South Delhi terrane marked coaxial folding between DF1 DF2 along axis cross folded DF3 folds NW-SE axis. Several meso- large-scale thrusts DF4 fractures occur belt, acted as channels for exhumation granulite basement gneisses. Excess shortening led orogen parallel extension lateral escape material reactivated strike-slip faults. Based on ages syn-DF1 granite gneisses, fractures, orogeny has been constrained 0.87 0.6 Ga. Paleoproterozoic North Terrane NF1 NF2 later cross-folded NF3 folds, producing dome- basin-structures. Age syntectonic late-stage metamorphism constrain north 1.8 0.96 Aravalli divided into shallow-marine eastern deeper marine western Rakhabdev suture zone. entire assemblage was isoclinal recumbent AF1 which, progressive deformation, were reoriented E-W axial trend. AF2 upright trending. AF3 are produced type 1 2 interference patterns, respectively. syn-AF1 migmatisation northern syn-AF3 granites south 1.7 Ga, coeval orogeny. charnockite tectonically emplaced within Sandmata Complex during Archean Bhilwara terrane, from orogeny, marks stabilisation crust NW India intrusion Berach equivalent at 2.6 Mangalwar complexes consist migmatite gneisses slivers greenstone. Neoarchean volcano-sedimentary schist belts interlaced Complex. migmatitic rocks show flow various directions while characterized extremely appressed reclined (BF1 BF2), inverted BF2 open BF3 multiple shear zones thrusts. ADMB exhibits syntaxial bend attributed indentation tectonics syn-South can be correlatable Nuna whereas correlated Pan-African gave rise Columbia Gondwanaland Supercontinent assembly. Grenville experienced thermal rejuvenation terranes.