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Authors: Bull, W. B.*
Title: Lichenometry dating of coseismic changes to a New Zealand landslide complex
Issue Date: 2003
Series/Report no.: 46 (5)
Keywords: earthquakes
Abstract: Lichenometry is a surface-exposure-dating procedure that complements traditional trench-and-date stratigraphic studies of earthquakes. Lichens on the surficial blocks of a slump in the Seaward Kaikoura Range, South Island, New Zealand provide precise, accurate (± 2 years) dating of 20 post-landslide rockfall events. The coseismic character of these rockfall events is apparent when ages of lichen-size peaks are compared with dates of historical earthquakes. Most local prehistoric lichen-size peaks are synchronous with peaks at other lichenometry sites in a 20 000 km2 region. Lichenometry may be the best paleoseismic tool for describing the extent and intensity of seismic shaking caused by prehistoric earthquakes, and for dating earthquakes generated by concealed thrust faults and subduction fault zones.
Appears in Collections:05.04.99. General or miscellaneous
04.04.01. Earthquake geology and paleoseismology
Annals of Geophysics

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