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Cited by 286

The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.

Oxygen Isotope Studies of Fresh and Weathered Submarine Basalts

Muehlenbachs, Karlis, Clayton, Robert N.·1972·Canadian Journal of Earth Sciences
DOI 10.1139/e72-014
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Abstract

The 18 O/16 O ratios of fresh unmetamorphosed basalts from the Reykjanes, Mid-Atlantic, and Gorda Ridges and the East Pacific Rise fall in a narrow range of 5.5–5.9‰ (SMOW), identical to those of basalts from oceanic islands. Large plagioclase xenocrysts in some of the basalts are not in isotopic equilibrium with coexisting olivine. The basalts react with sea water at the ambient sea-floor temperature to form clays, resulting in an increase in δ 18 O of the basalt of 0.25‰ per m.y. This provides a very sensitive method to detect early stages of weathering, which otherwise might go unnoticed. Advanced submarine weathering of basalt can remove nearly one half of its SiO 2, MgO, CaO, and Na 2 O and lesser amounts of Al 2 O s and TiO 2. Weathering does not proceed deeply enough into the basaltic sea floor to affect the chemical composition of sea water. Since it is likely that large amounts of basaltic debris (less than a few cm in radius) are on the ocean floor, their weathering can affect the ocean-sediment budget of TiO 2, Al 2 O 3, SiO 2, MgO, and CaO.

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Metadata

Authors
Muehlenbachs, K., & Clayton, R. N.
Venue
Canadian Journal of Earth Sciences
Publisher
Canadian Science Publishing
Published
1972-02-01
Volume
9
Issue
2
Pages
172-184
ISSN
  • 0008-4077 (ISSN-L)
  • 1480-3313
DOI
10.1139/e72-014
OpenAlex
W2132429552
Cited by
286
References
33
FWCI
16.61
Type
journal article
Language
en
Open access
closed

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