This sample belongs to: Sarah George
Aliquot Name: 18AOD05
IGSN:
Stratigraphic Formation Name:
Stratigraphic Age:
Rock Type: Sandstone
Mineral: Zircon
Latitude: -129.53069
Longitude: 56.67316
Internal Uncertainty Level: one sigma
External Uncertainty 206/238 (% two sigma): 0.8
External Uncertainty 206/207 (% two sigma): 0.6
Analysis Purpose:
Laboratory Name: Arizona LaserChron Center
Analyst Name: Daniel Alberts
Aliquot Reference:
Aliquot Instrumental Method: LA-ICPMS
Aliquot Instrumental Reference: Gehrels, G.E., Valencia, V., Ruiz, J., (2008), Enhanced precision, accuracy, efficiency, and spatial resolution of U-Pb ages by laser ablation-multicollector-inductively coupled plasma-mass spectrometry: Geochemistry, Geophysics, Geosystems, v. 9, Q03017, doi:10.1029/2007GC001805.
Aliquot Instrumental Reference:
| Analysis Name |
U |
206Pb/204Pb |
U/Th |
206Pb/207Pb |
± (%) |
207Pb/235U |
± (%) |
206Pb/238U |
± (%) |
error corr. |
206Pb/238U Age |
± (Ma) |
207Pb/235U Age |
± (Ma) |
206Pb/207Pb Age |
± (Ma) |
Best age |
± (Ma) |
Conc. |
| -Spot 9 |
188 |
13235 |
2.6 |
20.1541 |
1.5 |
0.1822 |
1.8 |
0.0267 |
1.1 |
0.58 |
169.5 |
1.8 |
170.0 |
2.9 |
176.1 |
34.7 |
169.5 |
1.8 |
99.7 |
| -Spot 23 |
292 |
14044 |
2.3 |
20.4332 |
1.4 |
0.1798 |
1.7 |
0.0267 |
1.0 |
0.59 |
169.6 |
1.7 |
167.9 |
2.6 |
143.9 |
32.2 |
169.6 |
1.7 |
101.0 |
| -Spot 30 |
180 |
7215 |
3.0 |
21.4634 |
1.3 |
0.1724 |
1.8 |
0.0269 |
1.3 |
0.71 |
170.8 |
2.2 |
161.5 |
2.7 |
27.3 |
30.0 |
170.8 |
2.2 |
105.8 |
| -Spot 15 |
377 |
152281 |
2.5 |
19.9145 |
1.1 |
0.1864 |
1.7 |
0.0269 |
1.3 |
0.76 |
171.3 |
2.2 |
173.6 |
2.7 |
203.9 |
25.4 |
171.3 |
2.2 |
98.7 |
| -Spot 27 |
243 |
13845 |
2.7 |
20.3782 |
1.2 |
0.1834 |
1.8 |
0.0271 |
1.3 |
0.75 |
172.5 |
2.2 |
171.0 |
2.8 |
150.2 |
27.5 |
172.5 |
2.2 |
100.9 |
| -Spot 35 |
57 |
3889 |
2.9 |
21.7955 |
1.6 |
0.1727 |
1.9 |
0.0273 |
1.0 |
0.55 |
173.7 |
1.8 |
161.8 |
2.8 |
NA |
NA |
173.7 |
1.8 |
107.4 |
| -Spot 36 |
229 |
20685 |
2.9 |
20.3341 |
1.1 |
0.1855 |
1.6 |
0.0274 |
1.2 |
0.73 |
174.0 |
2.0 |
172.7 |
2.6 |
155.3 |
26.2 |
174.0 |
2.0 |
100.7 |
| -Spot 22 |
152 |
6983 |
3.4 |
20.939 |
1.5 |
0.183 |
1.9 |
0.0278 |
1.2 |
0.62 |
176.7 |
2.0 |
170.6 |
2.9 |
86.3 |
34.5 |
176.7 |
2.0 |
103.6 |
| -Spot 25 |
73 |
5825 |
2.7 |
17.7299 |
3.0 |
0.2167 |
3.3 |
0.0279 |
1.5 |
0.44 |
177.2 |
2.6 |
199.2 |
6.0 |
467.2 |
65.7 |
177.2 |
2.6 |
89.0 |
| -Spot 33 |
238 |
8146 |
3.2 |
20.5982 |
1.8 |
0.1875 |
2.2 |
0.028 |
1.3 |
0.60 |
178.2 |
2.3 |
174.5 |
3.5 |
125.0 |
41.4 |
178.2 |
2.3 |
102.1 |
| -Spot 20 |
193 |
4388 |
3.7 |
21.2793 |
1.2 |
0.2062 |
1.6 |
0.0318 |
1.1 |
0.69 |
202.0 |
2.2 |
190.3 |
2.9 |
47.9 |
28.6 |
202.0 |
2.2 |
106.1 |
| -Spot 16 |
199 |
25182 |
3.1 |
19.788 |
1.2 |
0.2247 |
1.7 |
0.0323 |
1.1 |
0.68 |
204.7 |
2.3 |
205.8 |
3.1 |
218.7 |
28.3 |
204.7 |
2.3 |
99.5 |
| -Spot 34 |
224 |
24365 |
4.1 |
19.7188 |
1.0 |
0.2285 |
1.4 |
0.0327 |
1.1 |
0.73 |
207.4 |
2.2 |
208.9 |
2.7 |
226.8 |
22.5 |
207.4 |
2.2 |
99.2 |
| -Spot 14 |
90 |
31321 |
4.0 |
19.9354 |
1.6 |
0.2285 |
1.9 |
0.033 |
1.1 |
0.56 |
209.6 |
2.2 |
208.9 |
3.7 |
201.5 |
37.5 |
209.6 |
2.2 |
100.3 |
| -Spot 10 |
238 |
15295 |
2.4 |
19.6321 |
1.4 |
0.2356 |
1.7 |
0.0336 |
1.1 |
0.60 |
212.8 |
2.2 |
214.8 |
3.4 |
237.0 |
32.2 |
212.8 |
2.2 |
99.1 |
| -Spot 19 |
185 |
18009 |
4.2 |
19.8135 |
1.2 |
0.2399 |
1.8 |
0.0345 |
1.4 |
0.76 |
218.6 |
2.9 |
218.3 |
3.5 |
215.7 |
27.0 |
218.6 |
2.9 |
100.1 |
| -Spot 37 |
171 |
102407 |
4.7 |
19.7318 |
1.0 |
0.244 |
1.7 |
0.0349 |
1.4 |
0.81 |
221.4 |
3.0 |
221.7 |
3.4 |
225.3 |
22.8 |
221.4 |
3.0 |
99.8 |
| -Spot 5 |
565 |
74117 |
34.3 |
18.9571 |
0.9 |
0.3091 |
1.8 |
0.0425 |
1.6 |
0.86 |
268.4 |
4.1 |
273.4 |
4.4 |
317.1 |
21.4 |
268.4 |
4.1 |
98.1 |
| -Spot 6 |
121 |
5207 |
2.7 |
19.7152 |
1.1 |
0.3438 |
1.5 |
0.0492 |
1.1 |
0.70 |
309.5 |
3.3 |
300.0 |
4.0 |
227.2 |
25.3 |
309.5 |
3.3 |
103.1 |
| -Spot 1 |
87 |
7737 |
2.3 |
19.2185 |
1.5 |
0.3569 |
1.9 |
0.0498 |
1.1 |
0.58 |
313.1 |
3.3 |
309.9 |
5.0 |
285.9 |
34.6 |
313.1 |
3.3 |
101.0 |
| -Spot 39 |
254 |
11289 |
2.4 |
19.0206 |
1.2 |
0.3703 |
1.7 |
0.0511 |
1.2 |
0.73 |
321.3 |
3.9 |
319.9 |
4.7 |
309.5 |
26.7 |
321.3 |
3.9 |
100.4 |
| -Spot 32 |
80 |
17364 |
2.7 |
19.8684 |
1.3 |
0.3655 |
1.5 |
0.0527 |
0.8 |
0.54 |
331.1 |
2.6 |
316.3 |
4.1 |
209.3 |
29.7 |
331.1 |
2.6 |
104.7 |
| -Spot 11 |
149 |
15564 |
7.1 |
17.9031 |
0.9 |
0.5954 |
1.4 |
0.0773 |
1.0 |
0.75 |
480.3 |
4.8 |
474.3 |
5.2 |
445.7 |
20.2 |
480.3 |
4.8 |
107.8 |
| -Spot 26 |
499 |
13463 |
3.4 |
16.5934 |
1.0 |
0.6624 |
1.8 |
0.0798 |
1.5 |
0.84 |
494.6 |
7.2 |
516.1 |
7.3 |
612.1 |
20.9 |
494.6 |
7.2 |
80.8 |
| -Spot 21 |
287 |
17468 |
5.3 |
17.7156 |
0.9 |
0.6241 |
1.6 |
0.0802 |
1.3 |
0.83 |
497.5 |
6.3 |
492.4 |
6.1 |
469.1 |
19.3 |
497.5 |
6.3 |
106.1 |
| -Spot 2 |
229 |
27327 |
7.1 |
17.4384 |
0.8 |
0.6611 |
1.5 |
0.0836 |
1.3 |
0.84 |
517.8 |
6.3 |
515.3 |
6.0 |
503.9 |
17.8 |
517.8 |
6.3 |
102.8 |
| -Spot 12 |
239 |
26615 |
1.5 |
17.2494 |
1.1 |
0.6747 |
1.7 |
0.0844 |
1.3 |
0.77 |
522.6 |
6.5 |
523.6 |
6.8 |
527.8 |
23.2 |
522.6 |
6.5 |
99.0 |
| -Spot 3 |
47 |
6423 |
1.9 |
14.0339 |
0.8 |
1.6084 |
1.4 |
0.1638 |
1.2 |
0.81 |
977.8 |
10.6 |
973.5 |
9.0 |
963.9 |
17.3 |
963.9 |
17.3 |
101.4 |
| -Spot 18 |
195 |
94148 |
3.1 |
13.4719 |
0.8 |
1.6545 |
1.2 |
0.1617 |
0.9 |
0.76 |
966.4 |
8.4 |
991.3 |
7.7 |
1046.8 |
16.0 |
1046.8 |
16.0 |
92.3 |
| -Spot 17 |
399 |
57523 |
2.7 |
13.1278 |
1.0 |
1.7472 |
1.8 |
0.1664 |
1.5 |
0.83 |
992.4 |
14.0 |
1026.1 |
11.7 |
1098.8 |
20.1 |
1098.8 |
20.1 |
90.3 |
| -Spot 29 |
130 |
25611 |
1.3 |
12.8677 |
1.0 |
2.013 |
1.6 |
0.1879 |
1.2 |
0.76 |
1110.2 |
12.2 |
1119.9 |
10.7 |
1138.7 |
20.4 |
1138.7 |
20.4 |
97.5 |
| -Spot 8 |
294 |
102422 |
3.5 |
12.8635 |
1.1 |
2.1032 |
2.0 |
0.1963 |
1.7 |
0.85 |
1155.4 |
18.1 |
1149.8 |
13.8 |
1139.4 |
20.9 |
1139.4 |
20.9 |
101.4 |
| -Spot 40 |
62 |
20750 |
1.9 |
8.9461 |
0.9 |
4.9874 |
1.6 |
0.3237 |
1.4 |
0.83 |
1808.0 |
21.6 |
1817.2 |
13.9 |
1827.8 |
16.6 |
1827.8 |
16.6 |
98.9 |
| -Spot 28 |
276 |
135424 |
1.3 |
8.9192 |
0.9 |
5.0809 |
1.4 |
0.3288 |
1.1 |
0.78 |
1832.6 |
17.5 |
1832.9 |
12.0 |
1833.2 |
16.1 |
1833.2 |
16.1 |
100.0 |
| -Spot 7 |
127 |
343517 |
5.7 |
8.6797 |
0.7 |
5.4747 |
1.3 |
0.3448 |
1.1 |
0.86 |
1909.7 |
18.5 |
1896.6 |
11.2 |
1882.4 |
12.2 |
1882.4 |
12.2 |
101.4 |
| -Spot 13 |
38 |
47531 |
0.9 |
7.6408 |
0.6 |
7.0855 |
1.5 |
0.3928 |
1.4 |
0.91 |
2135.9 |
24.7 |
2122.2 |
13.3 |
2109.0 |
10.9 |
2109.0 |
10.9 |
101.3 |
| -Spot 24 |
232 |
73821 |
1.2 |
5.8808 |
0.6 |
10.6369 |
1.0 |
0.4539 |
0.8 |
0.79 |
2412.5 |
16.2 |
2491.9 |
9.5 |
2557.3 |
10.4 |
2557.3 |
10.4 |
94.3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| -Spot 4 |
82 |
9981 |
1.9 |
18.1075 |
2.3 |
0.6588 |
4.2 |
0.0866 |
3.5 |
0.84 |
535.1 |
17.9 |
513.9 |
16.8 |
420.4 |
51.0 |
535.1 |
17.9 |
127.3 |
filename:20868.xml
