Figure F24. Boundary between olivine (Ol)-rich troctolite and troctolite (red dashed lines) (Thin Section 72; Sample 345-U1415J-18R-1, 141–146 cm [Piece 17B]). Boundary type = grain size and modal; boundary definition = sutured. A. Close-up image. B. Plane-polarized light. Ol-rich troctolite = olivine-rich gabbro, (Ol) = altered olivine, Pl = plagioclase. C. Under crossed polars.
Previous | Close | Next | Top of page