Research Commons

A review of late Quaternary silicic and some other tephra formations from New Zealand: their stratigraphy, nomenclature, distribution, volume, and age.

Research Commons

Show simple item record

dc.contributor.author Froggatt, Paul C. en_US
dc.contributor.author Lowe, David J. en_US
dc.date.accessioned 2008-03-19T05:10:57Z
dc.date.available 2007-07-24 en_US
dc.date.available 2008-03-19T05:10:57Z
dc.date.issued 1990-01-01 en_US
dc.identifier.citation Froggatt, P.C. & Lowe, D.J. (1990). A review of late Quaternary silicic and some other tephra formations from New Zealand: their stratigraphy, nomenclature, distribution, volume, and age. New Zealand Journal of Geology and Geophysics, 33(1), 89-109. en_US
dc.identifier.uri http://hdl.handle.net/10289/176
dc.description.abstract The stratigraphic relationships and distribution of 36 named late Quaternary (<c. 50000 yr BP.) silicic tephra formations, erupted from 4 volcanic centres--Okataina, Taupo, Maroa, and Tuhua (Mayor Island)--are presented. The stratigraphy and status of several other named late Quaternary tephras are also discussed. This compilation brings together all the data, currently scattered through many publications, to make tephrostratigraphy more accessible and more easily used. The nomenclature of tephra formations is discussed and some rationalisations are suggested. The term "tephrology" is suggested as an appropriate title for the field of tephra studies. The deletion of grain-size (ash, lapilli), shape (breccia), and lithologic (pumice) terms from all formation names is recommended, as is standardisation on a "Tephra Formation" format Several tephra layers not previously formally named, or without designated type sections, are defined. The dominant ferromagnesian mineral assemblage of each tephra formation has been compiled as an aid to tephra identification. All available radiocarbon ages (384) on each tephra formation are presented, and each age is assessed for reliability in dating the eruption of that tephra. The standard-deviation weighted mean age of the reliable ages has been determined as the best current estimate of the age of each tephra. At least 10 tephra formations have no reliable ages, and efforts should be made to date these. en_US
dc.format.mimetype application/pdf
dc.language.iso en
dc.relation.uri http://www.rsnz.org/publish/nzjgg/notable/ en_US
dc.rights The final, definitive version of this article has been published in the journal, New Zealand Journal of Geology and Geophysics, 33(1), 1990, (c) Crown copyright 1990 at the The Royal Society of New Zealand webpage. en_US
dc.subject tephra formation en_US
dc.subject nomenclature en_US
dc.subject stratigraphy en_US
dc.subject mineralogy en_US
dc.subject C-14 ages en_US
dc.subject pyroclastics en_US
dc.subject volume en_US
dc.title A review of late Quaternary silicic and some other tephra formations from New Zealand: their stratigraphy, nomenclature, distribution, volume, and age. en_US
dc.type Journal Article en_US


Full-text options:

This item appears in the following Collection(s)

Show simple item record

Search Research Commons


Advanced Search

Browse

Theses

About Research Commons

My Account

Usage Statistics

Share

  • Bookmark and Share