Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
Geographic Location:
Extends roughly from the central Indian Ocean southwestward toward the Southern Ocean, between the Africa-Antarctica and India-Antarctica spreading centers.
Lies south of Madagascar and east of the African continent, curving toward Antarctica.
Tectonic Importance:
It is a divergent boundary, meaning the Indian Plate and the Antarctic Plate are moving away from each other.
Part of the global Mid-Ocean Ridge system, which includes the Mid-Atlantic Ridge and East Pacific Rise.
Geological Features
Characterized by:
Slow seafloor spreading rates (~14–20 mm/year), especially compared to faster ridges like the East Pacific Rise.
A rugged seafloor, with high-relief ridges and deep fracture zones.
Transform faults (e.g., Gallieni and Atlantis II) which offset the ridge segments.
Volcanism & Seismic Activity:
Associated with moderate volcanic activity, mainly basaltic.
Experiences frequent low-to-moderate magnitude earthquakes due to tectonic movement.
No significant subaerial volcanic islands are directly formed here, unlike some other ridges.
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