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Zircon dating of oceanic crustal accretion
Lissenberg, C.J.; Rioux, M.; Shimizu, N.; Bowring, S.A.; Mével, C. (2009). Zircon dating of oceanic crustal accretion. Science (Wash.) 323(5917): 1048-1050. https://dx.doi.org/10.1126/science.1167330
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, more
Peer reviewed article  

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Keyword
    Marine/Coastal

Authors  Top 
  • Lissenberg, C.J.
  • Rioux, M.
  • Shimizu, N.
  • Bowring, S.A.
  • Mével, C.

Abstract
    Most of Earth's present- day crust formed at mid- ocean ridges. High- precision uranium- lead dating of zircons in gabbros from the Vema Fracture Zone on the Mid- Atlantic Ridge reveals that the crust there grew in a highly regular pattern characterized by shallow melt delivery. Combined with results from previous dating studies, this finding suggests that two distinct modes of crustal accretion occur along slow- spreading ridges. Individual samples record a zircon date range of 90,000 to 235,000 years, which is interpreted to reflect the time scale of zircon crystallization in oceanic plutonic rocks.

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