Foliated gabbro cross cut by an amphibole rich-vein
Primary structures, sedimentary, magmatic rocks
Shear zones
Foliated gabbro cross cut by an amphibole (hornblende) rich-vein (Internal Luguride Units), Bonassola, Italy
For more info see Geological Field Trips and Maps, Società Geologica Italiana:
https://gftm.socgeol.it/296/issue-13/the-ligurian-ophiolites-a-journey-through-the-building-and-evolution-of-slow-spreading-oceanic-lithosphere.html