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New and revised 14 C dates for Hawaiian surface lava flows: Paleomagnetic and geomagnetic implications
Author(s) -
Pressling N.,
Trusdell F. A.,
Gubbins D.
Publication year - 2009
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2009gl037792
Subject(s) - radiocarbon dating , lava , geology , volcano , accelerator mass spectrometry , earth's magnetic field , charcoal , paleomagnetism , radiometric dating , geophysics , seismology , paleontology , physics , materials science , quantum mechanics , magnetic field , metallurgy
Radiocarbon dates have been obtained for 30 charcoal samples corresponding to 27 surface lava flows from the Mauna Loa and Kilauea volcanoes on the Island of Hawaii. The submitted charcoal was a mixture of fresh and archived material. Preparation and analysis was undertaken at the NERC Radiocarbon Laboratory in Glasgow, Scotland, and the associated SUERC Accelerator Mass Spectrometry facility. The resulting dates range from 390 years B.P. to 12,910 years B.P. with corresponding error bars an order of magnitude smaller than previously obtained using the gas‐counting method. The new and revised 14 C data set can aid hazard and risk assessment on the island. The data presented here also have implications for geomagnetic modelling, which at present is limited by large dating errors.