Zircon dating of oceanic crustal accretion

Lissenberg, Cornelis Johan ORCID: https://orcid.org/0000-0001-7774-2297, Rioux, Matthew, Shimizu, Nobumichi, Bowring, Samuel A. and Mével, Catherine 2009. Zircon dating of oceanic crustal accretion. Science 323 (5917) , pp. 1048-1050. 10.1126/science.1167330

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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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Earth and Environmental Sciences
Subjects:	G Geography. Anthropology. Recreation > GC Oceanography Q Science > QE Geology
Publisher:	American Association for the Advancement of Science
ISSN:	0036-8075
Last Modified:	18 Oct 2022 12:28
URI:	https://orca.cardiff.ac.uk/id/eprint/9907

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