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Fig. 21 | Progress in Earth and Planetary Science

Fig. 21

From: The Atlantis Bank Gabbro Massif, Southwest Indian Ridge

Fig. 21

Shinkai 6500 Dives at the northern terminus of the Atlantis Bank Gabbro Massif. Heavy sub-vertical lines represent dikes. Note that dikes are oriented east-west, parallel to the cross-section, but are shown as though they were oriented north-south perpendicular to the section for illustration. a Geologic interpretation of Shinkai Dive 655 with sample locations. b Plan view of Shinkai Dives 655 and 646 with the headwalls and slump toes of landslips inferred from the bathymetry. c Geologic interpretation of Shinkai Dive 646 with sample locations. d Photo of Dive 646 porphyroclastic lherzolite 6K 646-R08 showing fresh porphyroclastic enstatite (gray mineral), weathered relict olivine (orange clay), and black serpentine matrix after olivine representing static alteration indicating that the sample is from a massive peridotite outcrop, not a sheared serpentinite fault gouge

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