Hornblende-biotite- and biotite granodiorite are metaluminous and form the outer margin of the intrusion along the northern and southern walls, and sill-like bodies in an older suite of granitoids and Proterozoic basement rocks. It is suggested by Dada et al. Application of Biotite Composition in De termination o f Petr ogenesis o f. The rocks are all muscovite-biotite-alb ite-granites but they all also bear quartz, microperthitic microcline, apatite, zircon, ilmenite, and futile. Bi otite composit ions depend. Photomicrographs of selected slides are shown in.
Cherokee Dass, Beauty Dior &Nat Turnher
Also, various origins have been proposed for the rocks of this complex from metasomatic origin Oyawoye, to igneous origin Dada et al.
Dass x Dior
Nov Chem Geol Isot Geosci. Author content All content in this area was uploaded by Olusegun A. Structural relief resulting from middle Tertiary extensional deformation in the Chemehuevi Mountains exposes a unique cross section through a temporally and compositionally zoned both vertically and horizontally , laccolith-shaped intrusion of Late Cretaceous age.