Abstract:
A small isolated outcrop of basalt with well developed pillow structure, occurs near Pir Umar (27 39' 30" N, 66 37' E), Khuzdar District, Pakistan; emplaced tectonically in the Jamburo Group (Palaeocene Oligocene). The geochemical evidence shows it to have an oceanic island origin. The suprasubduction zone rocks belonging to the Bela Ophiolite, emplaced in lower Eocene, outcrop about 20 km westwards from Pir Umar basalt. Pir Umar basalt may represent a recycled oceanic lithosphere brought up h diapiric upwelling.
Page(s):
77-82
DOI:
DOI not available
Published:
Journal: Acta mineralogica pakistanica, Volume: 5, Issue: , Year: 1991