Dendrochronology Criteria (Jonathan Palmer):

a) Meta-data
i) Wood sample details:
(1) Site identifier/code: Weka Farms (WEK) – a 7000 ha farm as part of Landcorp (NZ state owned enterprise)
(2) Location: 42° 34’ S, 171° 32’ E; 150 masl.
(3) Sample label: LC122
(4) Sample type: Slice/biscuit
(5) Species: Lagarostrobos colensoi (LACO), silver pine (formerly Dacrydium colensoi)
(6) Number of rings: 437
(7) Presence of pith/bark and (where appropriate) heartwood/sapwood: Bark and pith missing.
(8) Archive location of the remaining part(s) of the sampled tree, or of high-resolution images in cases where the sample has been destroyed: Gondwana Tree-ring laboratory, Canterbury, New Zealand.

ii) Cross-dating details:
(1) Intra-site methodology used: Visual ring-width pattern matching followed by measuring and statistical validation using COFECHA (Holmes 1983). The Weka Farm site consists of 173 crossdated trees spanning -454 – 1909 CE (2364 years) with none of the ring-width measurements lodged yet with the International Tree-ring Data Bank (ITRDB). The specific tree selected for this study (LC122) was one of many buried trees excavated from the site and crossdated over the period 704-1140 CE (437 yrs). A master dating series was compiled in the program COFECHA from all the individual measurement series (after first being standardised to a mean of zero and standard deviation of 1.0). The selected tree had a Pearson correlation of 0.487 to the master dating series (once the series being tested had been removed from the master series, Grissino-Mayer 2001) (see 3WEKCOF.OUT). This series also cross-dates to the Oroko Swamp site lodged on the ITRDB reference data (i.e. ITRDB file: newz121.txt) and used in Cook et al., (2002a,b) (see WEKACOF.OUT).
(2) Inter-site methodology used (including version of reference chronologies and whether these reference chronologies are independent and publicly accessible): see above.

b) Data details
i) Raw series of measurements obtained from sampled trees (e.g. ring-widths) are published or deposited in a secure publicly-accessible archive (measurement unit and data format must be specified): Complete site collection of 173 ring-width series will be lodged at the ITRDB by mid-2019 after a paper has been submitted. Tree-ring data for LC122 (see LC122.rwl).
ii) Details of ring(s) sampled in particular tree is specified (e.g. sample xyz021, rings 21–30, 729-720 cal BP): Note – block of wood sent to WSL, Zurich. Rings 67-77 inclusive (1180-1170 cal BP inclusive) dated.