Moberly, Ralph; Ishii, Teruaki; Garcia, M. O.; Ross, K.; Artita, Kimberly (2006): Enriched, transitional, and normal mid-ocean-ridge basaltic glass, ODP Leg 203. Texas A&M University, Ocean Drilling Program, College Station, TX, United States, In: Schultz, Adam (editor), Orcutt, John A. (editor), Davies, Thomas A. (editor), Artita, Kimberly, Bonadiman, Costanza, Buysch, Arno, Carlson, Richard L., Carlut, Julie, Heft, Kerri L., Ishii, Teruaki, Moberly, Ralph, Revillon, Sidonie, Zhao, Xixi, Proceedings of the Ocean Drilling Program; scientific results; dynamics of Earth and ocean systems; covering Leg 203 of the cruises of the drilling vessel JOIDES Resolution; Balboa, Panama, to Victoria, Canada, Site 1243; 30 May-7 July 2002, 203, georefid:2008-067439

Abstract:
Sand-sized basaltic glass fragments were recovered in the liner of Core 203-1243B-19R, the deepest recovery from Hole 1243B. Microprobe analysis of 582 glassy cuttings cluster into five compositionally distinct groups, most of which are unlike the lithologic units described on board ship. Drilling operations intended to sweep cuttings from the caving hole and differences between the cuttings and geochemically distinct lithologic units of the upper part of the basement indicate that the cuttings came mainly, if not entirely, from the lower part of the hole. They give information about the part of Hole 1243B that had poor core recovery. Enriched mid-ocean-ridge basalt (MORB) from the upper part of the hole and transitional MORB from two groups of cuttings from sources low in the hole may be a trace of the Galapagos Plume on the Pacific Plate or may be a normal consequence of eruptions from two distinct magmas on fast-spreading crust.
Coverage:
West: -110.0500 East: -110.0400 North: 5.1800 South: 5.1800
Relations:
Expedition: 203
Site: 203-1243
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.sr.203.002.2006 (c.f. for more detailed metadata)
Data download: application/pdf
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