Figure 2 (IMAGE)

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Figure 2

Caption

Columnar section showing the upper mantle and crustal components of a typical suprasubduction zone ophiolite, illustrated by field photographs. (a) and (b): Banded and folded harzburgite (olivine + orthopyroxene); (c): Layered cumulates of dunite (bright yellow) and dark wehrlite (olivine + clinopyroxene); (d): Layered and folded gabbro; (e): Varitextured gabbro; (f): Gabbro cut by basaltic and felsic intrusions; (g): Sheeted dike complex; (h): Volcanic breccia set in a hyaloclasite matrix; (i): pillow lava; (j): Massive andesitic lava flow; (k): Folded chert layers. Pictures a-c, i (Leka ophiolite, Norway), d (Karmøy ophiolite, Norway), e-h (Solund-Stavfjord ophiolite, Norway, j, k (Mirdita ophiolite, Albania). Key to lettering: Chpyr- chalcopyrite, H/D- Harzburgite/dunite, H- Harzburgite, L- Lherzolite, Opx–veins- orthopyroxenite veins, Pyr- pyrite.

Credit

GeoGeo

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