Dendrochronology (cf Reimer et al. 2013, 1934)

a) Sample identifier (Dendro-Lab Key-code): ULL2023x, ULL4035x
b) Sample certainly derives from a single tree (Y/N): Y

Sample Section dated
ULL2023x Rings 79-89 inclusive (1180-1170 cal BP inclusive) dated.
ULL4035x Rings 48-58 inclusive (960-950 cal BP inclusive) dated.

c) Site: Urgaat Lava Larch near Khuisiin, 8 lakes Mongolia,
d) Object type: Sub-fossil log
e) Preservation: Dry
f) Sample type (e.g. core or slice): cross section
g) Species: Larix sibirica
h) No of rings:

Sample Rings
ULL2023x 192
ULL4035x 82

i) Pith (Y/N): N
j) Waney edge: N
k) Bark (Y/N): N
l) Sapwood (Y/N): N
m) Methodology used for dating:
n) We dated the series using COFECHA (Version 6.06P). COFECHA dates the series by multiple comparisons of the time series in question with regional chronology from the same site (KLL). Master chronology and undated series are first detrended with a cubic smoothing spline with 50% wavelength cutoff at 32 years. Each 50-year segment is lagged successively by 25 years against the master. Autoregressive model applied and residuals used for master dating series and testing. Correlation is Pearson correlation at the 99% confidence level. Best 11 positions based on Pearson correlation coefficients are reported below. The date is confirmed by checking the possible synchronous positions in the table visually and by verifying that the context information as a priori-information do not rule out a given date.

Dated individually (Y/N)		: Y

Intra-site/phase cross-matching with (Lab-Keycodes, relative positions, Mean curve identifier):
NONE

o) Raw ring width series attached

Publicly deposited (Y/N): N

p) Remainder of sample is stored in which archive?
Montane Forest Dynamics Lab, Department of Geology and Geography, West Virginia University, Morgantown, WV 26501

COFECHA output ULL2023x against dated chronology ull_26jun2014.rw
Time span 79 2012 1934 years, best matches for 50-year segments lagged 25 years
Listed in order from highest correlation

Counted Corr Corr Corr Corr Corr Corr Corr Corr Corr Corr Corr
Series Segment Add # 1 Add # 2 Add # 3 Add # 4 Add # 5 Add # 6 Add # 7 Add # 8 Add # 9 Add #10 Add #11
-------- --------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- --------
ULL2023x 692 741 0 .85 513 .55 807 .46 1192 .44 -382 .42 1037 .40 733 .39 16 .39 1074 .38 -350 .38 463 .37
ULL2023x 717 766 0 .88 -152 .59 -401 .50 933 .42 361 .41 -466 .41 412 .41 513 .40 -236 .40 -183 .39 988 .39
ULL2023x 742 791 0 .86 20 .60 963 .52 1194 .49 448 .45 583 .40 36 .39 73 .39 1007 .39 63 .39 461 .38
ULL2023x 767 816 0 .78 792 .55 -58 .54 20 .49 786 .48 36 .46 1062 .45 455 .45 1014 .44 -478 .42 73 .42
ULL2023x 792 841 0 .74 -609 .52 749 .47 997 .46 894 .46 -191 .44 -277 .43 113 .43 604 .42 342 .42 702 .41
ULL2023x 817 866 0 .70 -221 .47 538 .47 -413 .43 307 .43 -277 .42 713 .42 1 .41 -260 .41 -69 .40 -528 .39
ULL2023x 830 879 0 .73 249 .50 -260 .47 20 .47 508 .47 557 .46 -268 .45 1 .44 -686 .43 -639 .43 -221 .42
7 segments - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Number of segments
Add No R_av Add No R_av Add No R_av Add No R_av Add No R_av Add No R_av Add No R_av Add No R_av
0 7 0.79 +20 3 0.52

COFECHA output ULL4035x against dated chronology ull_26jun2014.rw
Time span 79 2012 1934 years, best matches for 50-year segments lagged 25 years
Listed in order from highest correlation

Counted Corr Corr Corr Corr Corr Corr Corr Corr Corr Corr Corr
Series Segment Add # 1 Add # 2 Add # 3 Add # 4 Add # 5 Add # 6 Add # 7 Add # 8 Add # 9 Add #10 Add #11
-------- --------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- --------
ULL4035x 943 992 0 .66 271 .52 878 .49 -168 .49 -624 .41 491 .41 -71 .40 -148 .40 951 .40 241 .39 -825 .38
ULL4035x 968 1017 0 .72 324 .46 579 .41 -676 .40 814 .39 -697 .39 -91 .39 844 .39 951 .37 67 .36 -69 .36
ULL4035x 970 1019 Lag from prior segment 2 years; insufficient
=================== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ========
1 undated series

The radiocarbon data were extracted from a longer sample. The crossdating results against ull_26jun2014.rw for the entire sample are:
Time span 79 2012 1934 years, best matches for 50-year segments lagged 25 years
Listed in order from highest correlation

Counted Corr Corr Corr Corr Corr Corr Corr Corr Corr Corr Corr
Series Segment Add # 1 Add # 2 Add # 3 Add # 4 Add # 5 Add # 6 Add # 7 Add # 8 Add # 9 Add #10 Add #11
-------- --------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- --------
ULL4035x 910 959 0 .71 -187 .42 537 .41 846 .41 -206 .39 -125 .39 458 .38 277 .38 722 .38 554 .38 -632 .38
ULL4035x 935 984 0 .60 -168 .55 -148 .49 -299 .46 -71 .45 -499 .43 -252 .42 -379 .42 150 .42 -624 .41 -832 .41
ULL4035x 960 1009 0 .71 -94 .42 -91 .40 491 .40 -379 .39 553 .37 -832 .37 271 .37 878 .37 565 .35 679 .35
ULL4035x 985 1034 0 .81 -697 .46 -654 .45 260 .44 -181 .43 -218 .42 -891 .42 -69 .42 -800 .42 683 .41 48 .40
ULL4035x 1010 1059 0 .82 -800 .52 -114 .52 -654 .44 909 .41 -188 .40 -323 .39 484 .38 -457 .38 942 .37 -428 .37
ULL4035x 1035 1084 0 .81 874 .49 -114 .48 -519 .47 113 .47 -60 .40 177 .38 -764 .38 687 .37 150 .37 597 .37
ULL4035x 1060 1109 0 .78 -762 .46 -509 .42 764 .41 108 .40 597 .39 328 .39 -305 .39 813 .39 -80 .37 -85 .36
ULL4035x 1085 1134 0 .78 328 .41 -995 .41 397 .40 -137 .40 -489 .39 -389 .39 -621 .38 -805 .38 -411 .38 -66 .38
ULL4035x 1110 1159 0 .78 251 .44 663 .40 -595 .39 345 .39 68 .38 418 .38 -562 .38 -137 .37 -360 .37 -415 .37