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GCR Display Cores
Southwest Indian Ridge (Southeast from Madagascar)
The aim of the Leg was to drill one or more holes in the Atlantis II Fracture Zone of the Southwest Indian Ridge. The primary goals were to
The principal objective at Site 735 were
Geologic and tectonic setting
Site 735 is located on a shallow platform in about 700-m of water on the east rim of the Atlantis II Transform. This platform, about 9 km long an a north-south direction and 4 km wide, is one of a series of uplifted blocks that are connected by saddles to form a long, linear ridge parallel to the Atlantis II Transform. The extremely flat surface of this platform suggests that it is a wave-cut feature that has subsided since formation to its present position. The magnetic anomaly pattern on the east wall of the transform suggests a crustal age of about 12 Ma for this site.
Olivine-bearing and olivine gabbro. Fractures are lined with green amphibole and white feldspar (albite?).
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Modified on Friday, 26-Sep-2008 11:39:11 CDT.