Steeply dipping basement faults and associated structures of the santander massif, eastern cordillera, colombian andes

The Santander Massif is a broad basement uplift, limited on both flanks by two major reverse faults. More internal faults, however, though very steeply dipping, are normal faults and limit sedimentary half· grabens. Much of the Neogene fault pattern is inherited from a Jurassic extensional event. Th...