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dc.contributor.authorSmith, Abigail M.en_US
dc.contributor.authorNelson, Campbell S.en_US
dc.contributor.authorKey, Marcus M.en_US
dc.contributor.authorPatterson, William P.en_US
dc.date.accessioned2008-03-19T05:10:11Z
dc.date.available2007-04-22en_US
dc.date.available2008-03-19T05:10:11Z
dc.date.issued2004-12-01en_US
dc.identifier.citationSmith, A. M., Nelson, C. S., Key, M. M. Jr. & Patterson, W. P. (2004). Stable isotope values in modern bryozoan carbonate from New Zealand and implications for paleoenvironmental interpretation. New Zealand Journal of Geology & Geophysics. 47(4), 809-821.en_US
dc.identifier.urihttps://hdl.handle.net/10289/134
dc.description.abstractBryozoan carbonate contains useful geochemical evidence of temperate shelf paleoenvironments. Stable isotope values were determined for 103 modern marine bryozoan skeletons representing 30 species from New Zealand. δ18O values range from -1.4 to 2.8 VPDB, while δ13C range from -4.5 to 2.8 VPDB (values uncorrected for mineralogical variation). These values are distinct from those of both tropical marine skeletons and New Zealand Tertiary fossils. Most bryozoans secrete carbonate in or near isotopic equilibrium with sea water, except for Celleporina and Steginoporella. The complex and variable mineralogies of the bryozoans reported here make correction for mineralogical effects problematic. Nevertheless, mainly aragonitic forms display higher isotope values, as anticipated. Both temperature and salinity constrain δ18O and δ13C values, and vary with latitude and water depth. Ten samples from a single branch of Cinctipora elegans from the Otago shelf cover a narrow range, although the striking difference in carbon isotope values between the endozone and exozone probably reflects different mineralisation histories. Our stable isotope results from three different laboratories on a single population from a single location are encouragingly consistent. Monomineralic bryozoans, when carefully chosen to avoid species suspected of vital fractionation, have considerable potential as geochemical paleoenvironmental indicators, particularly in temperate marine environments where bryozoans are dominant sediment producers.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherThe Royal Society of New Zealanden_NZ
dc.relation.urihttp://www.rsnz.org/publish/nzjgg/2004/057.phpen_US
dc.rightsThe final, definitive version of this article has been published in the Journal, New Zealand Journal of Geology & Geophysics, 47(4), (2004), (c) Royal Society of New Zealand at the Royal Society of New Zealand Journals Online webpage.en_US
dc.subjectbryozoansen_US
dc.subjectcarbonateen_US
dc.subjectoxygen isotopesen_US
dc.subjectcarbon isotopesen_US
dc.subjectNew Zealand shelfen_US
dc.titleStable isotope values in modern bryozoan carbonate from New Zealand and implications for paleoenvironmental interpretationen_US
dc.typeJournal Articleen_US
dc.identifier.doi10.1080/00288306.2004.9515090en_NZ
dc.relation.isPartOfNew Zealand Journal of Geology & Geophysicsen_NZ
pubs.begin-page809en_NZ
pubs.elements-id30430
pubs.end-page821en_NZ
pubs.issue4en_NZ
pubs.volume47en_NZ


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