Investigation of the Andrew Bain transform fault zone (African-Antartctic Region)

The Andrew Bain FZ is among the longest oceanicfaults with the active part extending over about 750 km.Since this mid-oceanic ridge (MOR) region is characterizedby very low spreading rates (16 mm/yr), itsactive part is one of the oldest in the whole MOR system. The study of the fault is of great imp...

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Bibliographic Details
Published in:Doklady Earth Sciences
Main Authors: PEYVE A. A., SKOLOTNEV S. G., LIGI M., TURKO N. N., BONATTI E., KOLODYAZHNYI S. Y., CHAMOV N. P., TSUKANOV N. V., BARAMYOKOV Y. E., ESKIN A. E., GRINDLAY N., SCLATER J. G., PERTSEV A. N., BORTOLUZZI G., MERCURI R., MUCCINI F., TAKEUCHI C., ZAFFAGNINI F., DOBROLYUBOVA K. O., BRUNELLI, Daniele, CIPRIANI, Anna, PAGANELLI, Emanuele
Other Authors: Peyve, A. A., Skolotnev, S. G., Ligi, M., Turko, N. N., Bonatti, E., Kolodyazhnyi, S. Y., Chamov, N. P., Tsukanov, N. V., Baramyokov, Y. E., Eskin, A. E., Grindlay, N., Sclater, J. G., Brunelli, Daniele, Pertsev, A. N., Cipriani, Anna, Bortoluzzi, G., Mercuri, R., Paganelli, Emanuele, Muccini, F., Takeuchi, C., Zaffagnini, F., Dobrolyubova, K. O.
Format: Article in Journal/Newspaper
Language:English
Published: 2007
Subjects:
South West Indian Ridge
ultraslow spreading
oceanic crust
Andrew Bain Fracture zone
peridotite
Antarctic
Indian
Bain
Bain Fracture Zone
Andrew Bain Fracture Zone
Antarc*
Online Access:http://hdl.handle.net/11380/594110
https://doi.org/10.1134/S1028334X07070021
Description
Summary:The Andrew Bain FZ is among the longest oceanicfaults with the active part extending over about 750 km.Since this mid-oceanic ridge (MOR) region is characterizedby very low spreading rates (16 mm/yr), itsactive part is one of the oldest in the whole MOR system. The study of the fault is of great importance forunderstanding the geodynamics and evolution of Circum-Antarctic regions of the World Ocean. Theresults of previous bathymetric and magnetic investigationsand the spatial distribution of earthquakes showedthat the Andrew Bain FZ includes numerous differentsecond-order structures. This feature is typical of continentalstrike-slip fault zones. Such megatransform fault zones can emerge in slowspreading ridges at a relative displacement of the lithosphere, which is thicker and colder than in most transformfaults. The aim of the present work was to substantiatethis suggestion with factual material.

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