Tihooceansko-antarktički hrbat
Tihooceansko-antarktični hrbat je divergentna granica tektonskih ploča na dnu južnog Tihog okeana, koja razdvaja Tihooceansku ploču od Antarktičke.[1][2][3]Smatra se južnim nastavkom Istočnog tihooceanskog hrbata, južno od zone prijeloma Challenger[4] i proteže se do trojnog čvora Macquarie.[5][6][7] južno od Novog Zelanda.[8]
Louisvillski hrbat je najduži podmorski planinski lanac u Tihom oceanu, prostire se u dužini od 4300 km u smjeru sjeverozapada od rasjedne zone Eltanin do podmorske planine Osmond kod Tonge. Smatra se da je nastao pomicanjem Tihooceanske ploče preko Louisvillske vruće točke iz koje izlazi magma.
- ↑ Langmuir, Charles H.; Klein, Emily M.; Plank, Terry. 2013. Petrological Systematics of Mid-Ocean Ridge Basalts: Constraints on Melt Generation Beneath Ocean Ridges. Mantle Flow and Melt Generation at Mid-Ocean Ridges. Geophysical Monograph Series. str. 183–280. doi:10.1029/GM071p0183. hdl:10161/8316. ISBN 9781118663875
- ↑ Sinton, John M.; Detrick, Robert S. 1992. Mid-ocean ridge magma chambers. Journal of Geophysical Research. 97 (B1): 197. Bibcode:1992JGR....97..197S. doi:10.1029/91JB02508
- ↑ Toshiro Tanimoto; Thorne Lay. 7. studenoga 2000. Mantle dynamics and seismic tomography. Proc. Natl. Acad. Sci. U.S.A. 97 (23): 12409–10. Bibcode:2000PNAS...9712409T. doi:10.1073/pnas.210382197. PMC 34063. PMID 11035784 CS1 održavanje: nepreporučeni parametar - authorlink2 (pomoć)
- ↑ Yáñez, G.; Cembrano, J.; Pardo, M.; Ranero, C.; Selles, D. 2002. The Challenger–Juan Fernández–Maipo major tectonic transition of the Nazca–Andean subduction system at 33–34°S: geodynamic evidence and implications. str. 23–38. doi:10.1016/S0895-9811(02)00004-4
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The Louisville Ridge was first detected in 1972 using depth soundings collected along random ship crossings of the South Pacific. Six years later the full extent of this chain was revealed by a radar altimeter aboard the Seasat (NASA) spacecraft.