Table 1.
Strontium isotopic compositions of live tree, rock, and water samples from the three potential source areas for Chaco Canyon timbers
| Sample type | Sample ID | 87Sr/86Sr | ± (1σ) |
|---|---|---|---|
| Chuska Mountains | |||
| Washington Pass, Tertiary sandstone and basalt, N36°04.793, W108°53.025′, 2575 m | |||
| Abies lasiocarpa | CKAMT-66 | 0.7097627 | 0.000015 |
| A. lasiocarpa | CKAMT-67 | 0.7097534 | 0.000011 |
| A. lasiocarpa | CKAMT-69 | 0.7096540 | 0.000008 |
| Pseudotsuga menziesii | CKAMT-12 | 0.7096784 | 0.000010 |
| P. menziesii | CKAMT-14 | 0.7097635 | 0.000009 |
| Picea engelmannii | CKAMT-6/1 | 0.7091645 | 0.000016 |
| P. engelmannii | CKAMT-7 | 0.7091195 | 0.000023 |
| P. engelmannii | CKAMT-8 | 0.7091226 | 0.000018 |
| P. engelmannii | CKAMT-9 | 0.7098975 | 0.000010 |
| P. engelmannii | CKAMT-11/30 | 0.7102245 | 0.000026 |
| P. engelmannii | CKAMT-16/1 | 0.7097847 | 0.000048 |
| Sandstone | CKAMT-23 | 0.7340103 | 0.000026 |
| Quartzite above CKAMT-23 | CKAMT-24 | 0.7536377 | 0.000110 |
| Olivine basalt | CKAMT-25 | 0.7062688 | 0.000016 |
| Basalt from float near CKBMT-25 | CKBMT-26 | 0.7062845 | 0.000010 |
| 50 ml filtered water: unnamed creek | CKAMT-4 | 0.7086723 | 0.000009 |
| Snow from snow bank near lysometer | CKAMT-17 | 0.7097465 | 0.000026 |
| 50 ml filtered: Crystal Creek | CKCMT-70 | 0.7092044 | 0.000008 |
| Porcupine Canyon: Tertiary sandstone, N36°16.20′, W108°59.30′, 2680 m | |||
| A. lasiocarpa | CKJMT-868 | 0.7094993 | 0.000024 |
| A. lasiocarpa | CKJMT-869 | 0.7094309 | 0.000042 |
| A. lasiocarpa | CKJMT-871 | 0.7094467 | 0.000030 |
| A. lasiocarpa | CKJMT-872 | 0.7095086 | 0.000010 |
| P. engelmannii | CKJMT-878 | 0.7096191 | 0.000018 |
| P. engelmannii | CKJMT-879 | 0.7096202 | 0.000064 |
| P. engelmannii | CKJMT-880 | 0.7095803 | 0.000032 |
| P. engelmannii | CKJMT-881 | 0.7095206 | 0.000030 |
| P. engelmannii | CKJMT-882 | 0.7094022 | 0.000031 |
| San Pedro Mountains | |||
| Los Pinos Creek, Precambrian granite, N36°06.138′, W106°54.266′, 2540 m | |||
| A. concolor (granite) | SPAMT-2 | 0.7170394 | 0.000022 |
| A. concolor (granite) | SPBMT-1 | 0.7130257 | 0.000034 |
| A. concolor (granite) | SPBMT-2 | 0.7132580 | 0.000029 |
| A. concolor (granite) | SPBMT-3 | 0.7142663 | 0.000010 |
| A. concolor (granite) | SPBMT-4 | 0.7146339 | 0.000009 |
| A. concolor (granite) | SPBMT-5 | 0.7134872 | 0.000009 |
| San Gregorio Reservoir area, Precambrian granite, N36°01.002, W106°50.870, 2800 m | |||
| A. lasiocarpa (granite) | SPCMT-7 | 0.7136393 | 0.000021 |
| A. lasiocarpa (granite) | SPCMT-10 | 0.7143231 | 0.000041 |
| Picea pungens (granite) | SPCMT-16 | 0.7152706 | 0.000022 |
| P. pungens (granite) | SPCMT-18 | 0.7154416 | 0.000038 |
| P. engelmannii (granite) | SPCMT-8 | 0.7145714 | 0.000015 |
| P. engelmannii (granite) | SPCMT-9 | 0.7142189 | 0.000016 |
| P. engelmannii (granite) | SPCMT-11 | 0.7130380 | 0.000021 |
| P. engelmannii (granite) | SPCMT-12 | 0.7138550 | 0.000028 |
| 50 ml filtered water: Rio de las Vacas | SPCMT-14 | 0.7152465 | 0.000011 |
| 50 ml filtered water: Clear Creek | SPCMT-15 | 0.7155773 | 0.000020 |
| Nacimiento Creek area, Paleozoic limestone, N36°00.419′, W106°52.576, 2565 m | |||
| A. concolor (limestone) | SPDMT-19 | 0.7129810 | 0.000020 |
| A. concolor (limestone) | SPDMT-20 | 0.7133323 | 0.000010 |
| A. concolor (limestone) | SPDMT-21 | 0.7141362 | 0.000011 |
| A. concolor (limestone) | SPDMT-22 | 0.7132687 | 0.000013 |
| A. concolor (limestone) | SPDMT-23 | 0.7136041 | 0.000011 |
| Clear Creek area, Paleozoic sandstone, N36°01.214′, W106°50.672′, 2782 m | |||
| A. lasiocarpa (sandstone) | SPEMT-28 | 0.7152808 | 0.000015 |
| A. lasiocarpa (sandstone) | SPEMT-30 | 0.7155620 | 0.000020 |
| A. lasiocarpa (sandstone) | SPEMT-31 | 0.7132068 | 0.000018 |
| P. engelmannii (sandstone) | SPEMT-26 | 0.7152455 | 0.000021 |
| P. engelmannii (sandstone) | SPEMT-27 | 0.7143226 | 0.000017 |
| P. engelmannii (sandstone) | SPEMT-29 | 0.7153612 | 0.000011 |
| San Mateo Mountains | |||
| San Mateo Spring, Pliocene basalt and andesite, N35°16.853′, W107°35.983′, 2734 m | |||
| A. lasiocarpa | MTA-34 | 0.7080143 | 0.000018 |
| A. lasiocarpa | MTA-37 | 0.7079377 | 0.000022 |
| A. lasiocarpa | MTA-38 | 0.7077849 | 0.000011 |
| A. lasiocarpa | MTA-41 | 0.7078883 | 0.000009 |
| P. pungens | MTA-43 | 0.7076815 | 0.000010 |
| P. pungens | MTA-44 | 0.7079061 | 0.000045 |
| P. pungens | MTA-45 | 0.7079552 | 0.000011 |
| P. pungens | MTA-46 | 0.7079553 | 0.000012 |
| P. pungens | MTA-47 | 0.7079416 | 0.000009 |
| P. engelmannii | MTA-33 | 0.7078721 | 0.000020 |
| P. engelmannii | MTA-35 | 0.7081503 | 0.000010 |
| P. engelmannii | MTA-36 | 0.7077871 | 0.000009 |
| P. engelmannii | MTA-39 | 0.7075795 | 0.000009 |
| P. engelmannii | MTA-40 | 0.7075784 | 0.000010 |
| 50 ml filtered water: San Mateo spring | MTA-32 | 0.7075347 | 0.000010 |
| Mosca Canyon, Pliocene basalt and andesite, N35°15.109′, W107°36.296′, 3090 m | |||
| A. lasiocarpa | MTB-55 | 0.7081341 | 0.000016 |
| A. lasiocarpa | MTB-56 | 0.7076333 | 0.000020 |
| A. lasiocarpa | MTB-58 | 0.7085688 | 0.000028 |
| A. lasiocarpa | MTB-59 | 0.7083559 | 0.000060 |
| P. pungens | MTB-60 | 0.7067913 | 0.000011 |
| P. pungens | MTB-61 | 0.7073999 | 0.000010 |
| P. pungens | MTB-62 | 0.7071000 | 0.000000 |
| P. pungens | MTB-63 | 0.7068774 | 0.000011 |
| P. pungens | MTB-64 | 0.7069048 | 0.000012 |
| P. engelmannii | MTB-50 | 0.7079198 | 0.000015 |
| P. engelmannii | MTB-51 | 0.7075191 | 0.000037 |
| P. engelmannii | MTB-52 | 0.7077738 | 0.000008 |
| P. engelmannii | MTB-53 | 0.7086757 | 0.000010 |
| P. engelmannii | MTB-54 | 0.7086485 | 0.000014 |
Abies concolor = white fir; Abies lasiocarpa = subalpine fir; Picea engelmannii = Engelmann spruce; Picea pungens = blue spruce; Pseudotsuga menziesii = Douglas fir.