Dating initial colonisation and environmental impacts by Polynesians in New Zealand is controversial.A key horizon is provided by the Kaharoa Tephra, deposited from an eruption of Mt Tarawera, because just underneath this layer are the first signs of forest clearance which imply human settlement.This site stores nothing other than an automatically generated session ID in the cookie; no other information is captured.In general, only the information that you provide, or the choices you make while visiting a web site, can be stored in a cookie.
C concentrations as archived in Northland sub-fossil kauri during the Younger Dryas Stadial (~12,950 to 11,600 years ago) and Oxygen isotope Stage 3 (~24,000 to 60,000 years ago); development of the Southern Hemisphere radiocarbon calibration curve, SHCal13 by decadal, high precision analysis of New Zealand kauri, silver pine and cedar samples.
A 213-year oak tree-ring chronology has been constructed from timbers from several sites from first-millennium AD Constantinople, in particular, from the study of over 2000 samples from harbour installations at Yenikapı (Figure 1), Istanbul (Pekin & Kangal 2007) (Figure 2). View of a small part of the Yenikapı excavation taken in July 2009 (looking to the SE) showing one of the wooden harbour installations from which samples were taken (Mürvet's Dock, informally named after the supervisor pending official nomenclature). Samples are grouped according to specific structures. RY = relative years (tree-ring) in terms of the floating 213-year chronology.