Dendrochronology (completed by I Panyushkina)
IntCal19

a) Sample identifier (Dendro-Lab Key-code): #BCL-01
Lab of Tree-Ring Research Archive and Collections, University of Arizona
b) Sample certainly derives from a single tree (Y/N): Y
c) Site: Birch Creek site in the White Mountains, California
3050m asl 37° 23' 9" N 118° 10' 28" W
d) Object type: Remnant log
e) Preservation: excellent, weathered edges
f) Sample type (e.g. core or slice): cross-section
g) Species: Pinus longaeva
h) No of rings: specimen with 635 rings for the interval -4935 to -4300
i) Pith (Y/N): N
j) Waney edge: N
k) Bark (Y/N): N
l) Sapwood (Y/N): N
m) Methodology used for dating:
The calendar age of the rings was determined with two cross-dating approaches: skeleton plotting and correlation of tree-ring width measurements. Originally the collected specimen was crossdated with skeleton plotting by C.W. Ferguson in 1971, and archived at the LTRR. The specimen’s surface has prick points for the decadal ring count and written dates (see photo below). For Miyake et al 2017 study we measured tree-ring widths for the interval -4800 to – 4599 astronomical BC years (Zero Year included) and cut off a wood block near the measuring line. ID of TRW series is BCL01. The series of measured tree-ring widths (202 yrs) was cross-dated with the Methuselah Walk chronology of Bristlecone Pine (INTRDB file ca535.rwl Span -6000-1979 submitted by D. A. Graybill). The dating was verified with Person correlation in COFECHA program. Correlation with master is 0.75.

COFECHA output file is BCL01 COF.out (position #1 in the list of cofecha series)
n) Dated individually (Y/N): Y
The specimen was collected in 1971 and originally dated by C.W. Ferguson with skeleton plotting. For Miyake et al. 2017 study, the dating was confirmed by C. Baisan and I. Panyushkina with tree-ring measurements. F. Miyake separated the rings.
o) Raw ring width series attached
Publicly deposited (Y/N): No
p) Remainder of sample is stored in which archive?
LTRR, University of Arizona, Tucson, USA

Location updated 2022 by IP

Dendrochronology (completed by I Panyushkina)
IntCal19

a) Sample identifier (Dendro-Lab Key-code): 1977-201C
Lab of Tree-Ring Research Archive and Collections, University of Arizona
b) Sample certainly derives from a single tree (Y/N): Y
c) Site: Coldwater Spring site in the White Mountains, California
3150m 37° 24' 25" N 118° 10' 22" W
d) Object type: Remnant log
e) Preservation: excellent, weathered edges
f) Sample type (e.g. core or slice): cross-section
g) Species: Pinus longaeva
h) No of rings: 320 rings for the interval - 4470 to -4150.
i) Pith (Y/N): N
j) Waney edge: N
k) Bark (Y/N): N
l) Sapwood (Y/N): N
m) Methodology used for dating: The calendar age of the rings was determined with two cross-dating approaches: skeleton plotting and correlation of tree-ring width measurements. Originally the collected specimen was crossdated with skeleton plotting by C.W. Ferguson in 1977, and archived at the LTRR. The specimen dates are between - 4470 and -4150. The specimen’s surface has written dates (see photo below). For Miyake et al 2017 study we measured tree-ring widths for the interval -4470 to – 4250 astronomical years (Year Zero included) and cut off a wood block near the measuring line. ID of TRW series is 77-201c. The series of measured tree-ring widths (221 yrs) was cross-dated with the Methuselah Walk chronology of Bristlecone Pine (INTRDB file ca535.rwl Span -6000-1979 submitted by D. A. Graybill). The dating was verified with Person correlation in COFECHA program. Correlation with master is 0.55. COFECHA output file is 77-201c COF.out (position #1 in the list of cofecha series).
n) Dated individually (Y/N): Y
The specimen was collected in 1977 and originally dated by C.W. Ferguson. For Miyake et al. 2017 study, the dating was confirmed by C. Baisan and I. Panyushkina. F. Miyake separated the rings.
o) Raw ring width series attached
Publicly deposited (Y/N): No
p) Remainder of sample is stored in which archive?
LTRR, University of Arizona, Tucson, USA

Location updated 2022 IP

Dendrochronology (completed by I Panyushkina)
IntCal19

a) Sample identifier (Dendro-Lab Key-code): #1972-052
Lab of Tree-Ring Research Archive and Collections, University of Arizona
b) Sample certainly derives from a single tree (Y/N): Y
c) Site: Wyman Canyon site in the White Mountains, California
2900m asl 37° 26' 30" N 118° 10' 48" W
d) Object type: Remnant log
e) Preservation: excellent, weathered edges
f) Sample type (e.g. core or slice): cross-section
g) Species: Pinus longaeva
h) No of rings: ~850 rings for the interval -4240 to -3390 dated with skeleton plot
i) Pith (Y/N): N
j) Waney edge: N
k) Bark (Y/N): N
l) Sapwood (Y/N): N
m) Methodology used for dating: The calendar age of the rings was determined with two cross-dating approaches: skeleton plotting and correlation of tree-ring width measurements. Originally the collected specimen was crossdated with skeleton plotting by C.W. Ferguson in 1972, and archived at the LTRR. The specimen dates are between -4240 and -3390. The specimen’s surface has prick points for the decadal ring count and written dates (see photo below). For Miyake et al 2017 study we measured tree-ring widths for the interval -4200 to – 3930 astronomical BC years (Zero Year included) and cut off a wood block near the measuring line. ID of TRW series is 72-052. The series of measured tree-ring widths (271 yrs) was cross-dated with the Methuselah Walk chronology of Bristlecone Pine (INTRDB file ca535.rwl Span -6000-1979 submitted by D. A. Graybill). The dating was verified with Person correlation in COFECHA program. Correlation with master is 0.61. COFECHA output file is 72-052 COF.out (position #1 in the list of cofecha series).
n) Dated individually (Y/N): Y
The specimen was collected in 1972, and originally dated by C.W. Ferguson. For Miyake et al. 2017 study, the dating was confirmed by C. Baisan and I. Panyushkina. F. Miyake separated the rings.
o) Raw ring width series: 72-052.rwl
Publicly deposited (Y/N): No
p) Remainder of sample is stored in which archive?
LTRR, University of Arizona, Tucson, USA

Location updated 2022 IP