The present configuration of the Bouvet triple junction

New Hawaii-MR1 sonar data show that the southernmost Mid-Atlantic Ridge joins the South American–Antarctic Ridge by an obliquely opening rift and overlaps Spiess Ridge, the westernmost segment of the Southwest Indian Ridge, with no evidence for a transform fault. The junction is therefore neither ri...

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Bibliographic Details
Main Authors: Mitchell, Neil C., Livermore, Roy A.
Format: Article in Journal/Newspaper
Language:unknown
Published: Geological Society of America 1998
Subjects:
Antarctic
Indian
Mid-Atlantic Ridge
Bouvet
Antarc*
Online Access:http://nora.nerc.ac.uk/id/eprint/504196/
https://doi.org/10.1130/0091-7613(1998)026<0267:TPCOTB>2.3.CO;2
Description
Summary:New Hawaii-MR1 sonar data show that the southernmost Mid-Atlantic Ridge joins the South American–Antarctic Ridge by an obliquely opening rift and overlaps Spiess Ridge, the westernmost segment of the Southwest Indian Ridge, with no evidence for a transform fault. The junction is therefore neither ridge-fault-fault nor ridge-ridge-ridge. We speculate that growth of Spiess Ridge adjacent to the triple junction has caused this complexity and discuss more generally the origins of distributed deformation at oceanic triple junctions.

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