This sample belongs to: Sarah George
Aliquot Name: 18AST01
IGSN:
Stratigraphic Formation Name:
Stratigraphic Age:
Rock Type: Sandstone
Mineral: Zircon
Latitude: -130.129504
Longitude: 57.789408
Internal Uncertainty Level: one sigma
External Uncertainty 206/238 (% two sigma): 0.7
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. |
| 18AST01 Spot 56 |
2028 |
91314 |
1.7 |
20.1277 |
0.8 |
0.1958 |
1.2 |
0.0286 |
0.9 |
0.72 |
181.8 |
1.6 |
181.6 |
2.0 |
179.1 |
19.5 |
181.8 |
1.6 |
100.1 |
| 18AST01 Spot 16 |
1968 |
67038 |
2.0 |
20.0255 |
0.8 |
0.2107 |
1.6 |
0.0306 |
1.4 |
0.86 |
194.4 |
2.7 |
194.2 |
2.9 |
191.0 |
19.1 |
194.4 |
2.7 |
100.1 |
| 18AST01 Spot 6 |
1240 |
424237 |
1.4 |
19.7715 |
0.9 |
0.216 |
1.6 |
0.031 |
1.4 |
0.83 |
196.7 |
2.6 |
198.5 |
2.9 |
220.6 |
21.3 |
196.7 |
2.6 |
99.1 |
| 18AST01 Spot 62 |
301 |
72322 |
2.5 |
19.4837 |
1.4 |
0.2224 |
2.0 |
0.0314 |
1.4 |
0.71 |
199.6 |
2.8 |
203.9 |
3.8 |
254.5 |
33.1 |
199.6 |
2.8 |
97.9 |
| 18AST01 Spot 43 |
315 |
6386 |
3.0 |
20.2741 |
2.1 |
0.2139 |
2.5 |
0.0315 |
1.3 |
0.54 |
199.7 |
2.6 |
196.8 |
4.4 |
162.3 |
48.9 |
199.7 |
2.6 |
101.5 |
| 18AST01 Spot 21 |
363 |
80864 |
2.9 |
19.9938 |
1.2 |
0.2172 |
1.8 |
0.0315 |
1.3 |
0.75 |
200.0 |
2.6 |
199.6 |
3.2 |
194.7 |
27.7 |
200.0 |
2.6 |
100.2 |
| 18AST01 Spot 42 |
673 |
88339 |
2.0 |
19.9319 |
1.0 |
0.2188 |
1.6 |
0.0316 |
1.3 |
0.81 |
200.8 |
2.6 |
200.9 |
3.0 |
201.9 |
22.1 |
200.8 |
2.6 |
100.0 |
| 18AST01 Spot 52 |
350 |
18374 |
2.7 |
20.0849 |
1.3 |
0.2174 |
1.8 |
0.0317 |
1.3 |
0.69 |
201.1 |
2.5 |
199.7 |
3.3 |
184.1 |
30.7 |
201.1 |
2.5 |
100.7 |
| 18AST01 Spot 59 |
628 |
60843 |
2.4 |
20.0915 |
1.0 |
0.2174 |
1.7 |
0.0317 |
1.4 |
0.80 |
201.1 |
2.7 |
199.7 |
3.1 |
183.3 |
23.6 |
201.1 |
2.7 |
100.7 |
| 18AST01 Spot 18 |
208 |
15071 |
3.4 |
19.7431 |
1.1 |
0.2212 |
1.5 |
0.0317 |
1.0 |
0.68 |
201.1 |
1.9 |
202.9 |
2.7 |
224.0 |
24.8 |
201.1 |
1.9 |
99.1 |
| 18AST01 Spot 28 |
283 |
7472 |
2.9 |
20.5909 |
1.6 |
0.2124 |
2.0 |
0.0317 |
1.2 |
0.59 |
201.4 |
2.4 |
195.6 |
3.6 |
125.9 |
38.8 |
201.4 |
2.4 |
103.0 |
| 18AST01 Spot 13 |
289 |
72147 |
3.9 |
19.5313 |
1.3 |
0.2242 |
1.8 |
0.0318 |
1.2 |
0.66 |
201.6 |
2.3 |
205.4 |
3.3 |
248.8 |
30.9 |
201.6 |
2.3 |
98.2 |
| 18AST01 Spot 32 |
325 |
74078 |
2.9 |
19.108 |
1.3 |
0.2301 |
1.9 |
0.0319 |
1.4 |
0.72 |
202.4 |
2.7 |
210.3 |
3.6 |
299.0 |
30.3 |
202.4 |
2.7 |
96.3 |
| 18AST01 Spot 63 |
396 |
7542 |
2.7 |
20.2076 |
1.2 |
0.2177 |
1.7 |
0.0319 |
1.2 |
0.69 |
202.5 |
2.3 |
200.0 |
3.0 |
169.9 |
28.4 |
202.5 |
2.3 |
101.3 |
| 18AST01 Spot 31 |
160 |
5843 |
4.1 |
20.2394 |
1.9 |
0.2174 |
2.3 |
0.0319 |
1.2 |
0.54 |
202.6 |
2.4 |
199.7 |
4.1 |
166.2 |
44.5 |
202.6 |
2.4 |
101.4 |
| 18AST01 Spot 14 |
356 |
115310 |
3.3 |
19.8854 |
1.1 |
0.2214 |
1.7 |
0.0319 |
1.3 |
0.74 |
202.7 |
2.5 |
203.1 |
3.1 |
207.3 |
26.6 |
202.7 |
2.5 |
99.8 |
| 18AST01 Spot 65 r2 |
1033 |
70865 |
1.4 |
20.1903 |
0.9 |
0.2183 |
1.5 |
0.032 |
1.2 |
0.79 |
203.0 |
2.4 |
200.5 |
2.8 |
171.9 |
22.1 |
203.0 |
2.4 |
101.2 |
| 18AST01 Spot 57 |
344 |
7292 |
3.6 |
20.9635 |
1.0 |
0.2107 |
1.6 |
0.0321 |
1.3 |
0.80 |
203.4 |
2.6 |
194.2 |
2.9 |
83.5 |
23.5 |
203.4 |
2.6 |
104.8 |
| 18AST01 Spot 66 |
290 |
21911 |
3.8 |
20.1184 |
1.5 |
0.2196 |
1.8 |
0.0321 |
1.0 |
0.56 |
203.4 |
2.0 |
201.6 |
3.3 |
180.2 |
34.9 |
203.4 |
2.0 |
100.9 |
| 18AST01 Spot 12 |
1611 |
72552 |
2.2 |
19.9469 |
0.8 |
0.2216 |
1.4 |
0.0321 |
1.2 |
0.82 |
203.5 |
2.4 |
203.2 |
2.7 |
200.2 |
19.1 |
203.5 |
2.4 |
100.1 |
| 18AST01 Spot 20 |
379 |
11596 |
2.8 |
20.0807 |
1.6 |
0.2203 |
1.9 |
0.0321 |
1.0 |
0.54 |
203.7 |
2.1 |
202.1 |
3.6 |
184.6 |
38.2 |
203.7 |
2.1 |
100.7 |
| 18AST01 Spot 5 |
331 |
9785 |
3.0 |
20.5352 |
2.0 |
0.2155 |
2.4 |
0.0321 |
1.3 |
0.54 |
203.7 |
2.6 |
198.1 |
4.2 |
132.2 |
46.7 |
203.7 |
2.6 |
102.8 |
| 18AST01 Spot 29 |
293 |
6453 |
2.9 |
20.3531 |
1.6 |
0.2176 |
1.9 |
0.0321 |
0.9 |
0.50 |
203.9 |
1.9 |
199.9 |
3.4 |
153.1 |
38.3 |
203.9 |
1.9 |
102.0 |
| 18AST01 Spot 61 |
493 |
53709 |
2.6 |
19.475 |
1.3 |
0.2275 |
2.0 |
0.0322 |
1.6 |
0.79 |
204.0 |
3.2 |
208.2 |
3.8 |
255.5 |
28.9 |
204.0 |
3.2 |
98.0 |
| 18AST01 Spot 58 |
639 |
24168 |
2.2 |
20.2199 |
1.1 |
0.2203 |
1.5 |
0.0323 |
1.0 |
0.65 |
205.0 |
1.9 |
202.1 |
2.7 |
168.5 |
25.9 |
205.0 |
1.9 |
101.4 |
| 18AST01 Spot 1 |
638 |
173283 |
2.0 |
19.5849 |
1.0 |
0.2282 |
1.7 |
0.0324 |
1.3 |
0.80 |
205.7 |
2.7 |
208.7 |
3.1 |
242.5 |
23.3 |
205.7 |
2.7 |
98.6 |
| 18AST01 Spot 48 |
520 |
19683 |
2.3 |
20.167 |
0.9 |
0.2216 |
1.5 |
0.0324 |
1.2 |
0.78 |
205.7 |
2.3 |
203.3 |
2.7 |
174.6 |
21.9 |
205.7 |
2.3 |
101.2 |
| 18AST01 Spot 49 |
597 |
22891 |
2.1 |
19.9122 |
0.8 |
0.2245 |
1.6 |
0.0324 |
1.3 |
0.85 |
205.8 |
2.7 |
205.6 |
2.9 |
204.2 |
19.5 |
205.8 |
2.7 |
100.1 |
| 18AST01 Spot 11 |
866 |
40407 |
1.7 |
20.0415 |
1.1 |
0.2231 |
1.6 |
0.0324 |
1.2 |
0.75 |
205.8 |
2.5 |
204.5 |
3.0 |
189.1 |
25.0 |
205.8 |
2.5 |
100.7 |
| 18AST01 Spot 23 |
441 |
322109 |
2.5 |
19.5568 |
1.0 |
0.2288 |
1.4 |
0.0325 |
1.0 |
0.71 |
205.9 |
2.0 |
209.2 |
2.6 |
245.8 |
22.1 |
205.9 |
2.0 |
98.5 |
| 18AST01 Spot 51 |
420 |
7025 |
2.2 |
20.8478 |
2.4 |
0.2146 |
2.8 |
0.0325 |
1.3 |
0.48 |
205.9 |
2.7 |
197.4 |
5.0 |
96.6 |
57.8 |
205.9 |
2.7 |
104.3 |
| 18AST01 Spot 17 |
498 |
24661 |
2.6 |
20.105 |
1.0 |
0.2228 |
1.6 |
0.0325 |
1.3 |
0.78 |
206.2 |
2.6 |
204.3 |
3.0 |
181.8 |
23.6 |
206.2 |
2.6 |
101.0 |
| 18AST01 Spot 33 |
294 |
11647 |
3.4 |
18.1978 |
2.9 |
0.2463 |
3.2 |
0.0325 |
1.3 |
0.40 |
206.3 |
2.6 |
223.5 |
6.4 |
409.3 |
65.4 |
206.3 |
2.6 |
92.3 |
| 18AST01 Spot 26 |
535 |
34086 |
2.6 |
20.3834 |
0.7 |
0.2199 |
1.3 |
0.0325 |
1.1 |
0.82 |
206.3 |
2.2 |
201.8 |
2.4 |
149.6 |
17.5 |
206.3 |
2.2 |
102.2 |
| 18AST01 Spot 60 |
426 |
19579 |
2.8 |
20.2424 |
1.1 |
0.2216 |
1.7 |
0.0325 |
1.3 |
0.76 |
206.4 |
2.6 |
203.2 |
3.1 |
165.9 |
25.6 |
206.4 |
2.6 |
101.6 |
| 18AST01 Spot 19 |
558 |
75294 |
2.7 |
19.7588 |
0.9 |
0.227 |
1.5 |
0.0325 |
1.1 |
0.78 |
206.5 |
2.3 |
207.7 |
2.7 |
222.1 |
21.1 |
206.5 |
2.3 |
99.4 |
| 18AST01 Spot 27 |
195 |
65528 |
3.9 |
19.337 |
1.6 |
0.2323 |
2.1 |
0.0326 |
1.4 |
0.65 |
206.8 |
2.8 |
212.1 |
4.1 |
271.8 |
37.6 |
206.8 |
2.8 |
97.5 |
| 18AST01 Spot 54 r1 |
1261 |
65907 |
1.4 |
20.1056 |
0.8 |
0.2236 |
1.5 |
0.0326 |
1.2 |
0.83 |
206.9 |
2.5 |
204.9 |
2.7 |
181.7 |
19.2 |
206.9 |
2.5 |
101.0 |
| 18AST01 Spot 55 |
366 |
6101 |
2.9 |
21.3039 |
2.7 |
0.2111 |
3.1 |
0.0326 |
1.3 |
0.44 |
207.0 |
2.7 |
194.5 |
5.4 |
45.1 |
65.4 |
207.0 |
2.7 |
106.4 |
| 18AST01 Spot 10 |
219 |
386659 |
3.2 |
19.6174 |
1.2 |
0.2297 |
1.5 |
0.0327 |
1.0 |
0.62 |
207.4 |
2.0 |
209.9 |
2.9 |
238.7 |
27.8 |
207.4 |
2.0 |
98.8 |
| 18AST01 Spot 7 |
291 |
10495 |
3.9 |
20.0101 |
1.3 |
0.2258 |
1.8 |
0.0328 |
1.2 |
0.68 |
208.0 |
2.4 |
206.7 |
3.3 |
192.8 |
29.9 |
208.0 |
2.4 |
100.6 |
| 18AST01 Spot 67 |
354 |
34035 |
3.0 |
20.1466 |
1.3 |
0.2243 |
1.7 |
0.0328 |
1.2 |
0.69 |
208.0 |
2.5 |
205.5 |
3.3 |
177.0 |
29.6 |
208.0 |
2.5 |
101.2 |
| 18AST01 Spot 24 |
437 |
92362 |
2.4 |
19.54 |
1.0 |
0.2315 |
1.5 |
0.0328 |
1.1 |
0.75 |
208.2 |
2.3 |
211.4 |
2.9 |
247.8 |
23.1 |
208.2 |
2.3 |
98.5 |
| 18AST01 Spot 22 |
328 |
17045 |
3.1 |
19.9344 |
1.4 |
0.2273 |
1.8 |
0.0329 |
1.0 |
0.60 |
208.5 |
2.1 |
208.0 |
3.3 |
201.6 |
32.6 |
208.5 |
2.1 |
100.3 |
| 18AST01 Spot 45 |
214 |
38712 |
3.3 |
20.0334 |
1.5 |
0.2262 |
1.9 |
0.0329 |
1.2 |
0.62 |
208.6 |
2.4 |
207.1 |
3.5 |
190.1 |
34.3 |
208.6 |
2.4 |
100.7 |
| 18AST01 Spot 50 |
432 |
25074 |
2.6 |
20.2713 |
1.0 |
0.2236 |
1.5 |
0.0329 |
1.1 |
0.73 |
208.6 |
2.3 |
204.9 |
2.8 |
162.5 |
24.4 |
208.6 |
2.3 |
101.8 |
| 18AST01 Spot 47 |
370 |
6193 |
2.3 |
20.8752 |
1.7 |
0.2173 |
2.0 |
0.0329 |
1.2 |
0.57 |
208.8 |
2.4 |
199.7 |
3.7 |
93.5 |
39.6 |
208.8 |
2.4 |
104.6 |
| 18AST01 Spot 44 |
1159 |
518344 |
1.6 |
19.8406 |
0.8 |
0.2287 |
1.5 |
0.0329 |
1.3 |
0.87 |
208.8 |
2.7 |
209.1 |
2.9 |
212.5 |
17.6 |
208.8 |
2.7 |
99.9 |
| 18AST01 Spot 40 |
328 |
31820 |
2.7 |
19.9547 |
1.3 |
0.2275 |
1.8 |
0.0329 |
1.2 |
0.68 |
208.9 |
2.5 |
208.1 |
3.4 |
199.2 |
30.4 |
208.9 |
2.5 |
100.4 |
| 18AST01 Spot 2 |
206 |
8249 |
2.7 |
20.5551 |
1.8 |
0.221 |
2.1 |
0.033 |
1.2 |
0.55 |
209.0 |
2.4 |
202.7 |
3.9 |
130.0 |
42.1 |
209.0 |
2.4 |
103.1 |
| 18AST01 Spot 53 c1 |
372 |
17924 |
2.6 |
19.907 |
1.3 |
0.2288 |
1.9 |
0.033 |
1.3 |
0.71 |
209.6 |
2.8 |
209.2 |
3.5 |
204.8 |
30.4 |
209.6 |
2.8 |
100.2 |
| 18AST01 Spot 4 |
296 |
61240 |
3.0 |
19.4727 |
1.4 |
0.2339 |
1.8 |
0.0331 |
1.2 |
0.66 |
209.6 |
2.4 |
213.4 |
3.5 |
255.7 |
31.3 |
209.6 |
2.4 |
98.2 |
| 18AST01 Spot 9 |
238 |
15798 |
3.6 |
20.2044 |
1.9 |
0.2264 |
2.3 |
0.0332 |
1.2 |
0.53 |
210.5 |
2.5 |
207.2 |
4.3 |
170.3 |
45.0 |
210.5 |
2.5 |
101.6 |
| 18AST01 Spot 46 |
355 |
87262 |
2.9 |
20.0657 |
1.1 |
0.228 |
1.5 |
0.0332 |
1.0 |
0.67 |
210.5 |
2.0 |
208.6 |
2.8 |
186.3 |
25.1 |
210.5 |
2.0 |
100.9 |
| 18AST01 Spot 36 |
167 |
9032 |
3.7 |
17.3253 |
2.8 |
0.2653 |
3.2 |
0.0334 |
1.6 |
0.50 |
211.5 |
3.4 |
239.0 |
6.9 |
518.1 |
61.8 |
211.5 |
3.4 |
88.5 |
| 18AST01 Spot 41 |
493 |
23549 |
2.8 |
18.696 |
1.4 |
0.2469 |
1.9 |
0.0335 |
1.3 |
0.69 |
212.4 |
2.7 |
224.0 |
3.8 |
348.6 |
30.7 |
212.4 |
2.7 |
94.8 |
| 18AST01 Spot 25 |
217 |
52184 |
2.9 |
19.6994 |
1.4 |
0.2348 |
1.7 |
0.0336 |
0.9 |
0.57 |
212.8 |
2.0 |
214.1 |
3.2 |
229.0 |
31.8 |
212.8 |
2.0 |
99.4 |
| 18AST01 Spot 15 |
321 |
44541 |
2.4 |
19.6549 |
1.3 |
0.2356 |
1.7 |
0.0336 |
1.1 |
0.64 |
213.1 |
2.2 |
214.8 |
3.2 |
234.3 |
29.4 |
213.1 |
2.2 |
99.2 |
| 18AST01 Spot 3 |
452 |
10510 |
2.8 |
20.3937 |
1.7 |
0.2274 |
1.9 |
0.0336 |
0.8 |
0.43 |
213.3 |
1.7 |
208.0 |
3.5 |
148.5 |
39.6 |
213.3 |
1.7 |
102.5 |
| 18AST01 Spot 37 |
368 |
162206 |
2.4 |
19.1019 |
1.3 |
0.2443 |
1.9 |
0.0339 |
1.4 |
0.73 |
214.7 |
2.9 |
222.0 |
3.7 |
299.8 |
28.9 |
214.7 |
2.9 |
96.7 |
| 18AST01 Spot 34 |
3276 |
104200 |
1.3 |
19.8243 |
0.7 |
0.2366 |
1.5 |
0.034 |
1.3 |
0.86 |
215.7 |
2.7 |
215.6 |
2.8 |
214.4 |
17.1 |
215.7 |
2.7 |
100.0 |
| 18AST01 Spot 8 |
396 |
20311 |
1.5 |
20.0098 |
1.3 |
0.2349 |
1.6 |
0.0341 |
1.0 |
0.60 |
216.1 |
2.1 |
214.2 |
3.1 |
192.9 |
29.9 |
216.1 |
2.1 |
100.9 |
| 18AST01 Spot 35 |
302 |
20171 |
2.7 |
19.5705 |
1.1 |
0.2401 |
1.4 |
0.0341 |
0.9 |
0.63 |
216.1 |
1.9 |
218.5 |
2.8 |
244.2 |
25.1 |
216.1 |
1.9 |
98.9 |
| 18AST01 Spot 39 |
149 |
87274 |
4.0 |
13.9537 |
1.6 |
0.337 |
2.1 |
0.0341 |
1.4 |
0.66 |
216.3 |
2.9 |
294.9 |
5.4 |
975.6 |
32.3 |
216.3 |
2.9 |
73.3 |
| 18AST01 Spot 38 |
384 |
19895 |
2.2 |
19.4251 |
0.9 |
0.2834 |
1.4 |
0.0399 |
1.0 |
0.73 |
252.5 |
2.4 |
253.4 |
3.0 |
261.4 |
21.3 |
252.5 |
2.4 |
99.7 |
| 18AST01 Spot 64 c2 |
418 |
16479 |
2.0 |
19.4656 |
1.1 |
0.3261 |
1.8 |
0.0461 |
1.3 |
0.77 |
290.2 |
3.8 |
286.5 |
4.4 |
256.6 |
25.8 |
290.2 |
3.8 |
101.3 |
| 18AST01 Spot 30 |
113 |
35041 |
2.2 |
17.7723 |
1.3 |
0.5441 |
1.9 |
0.0702 |
1.4 |
0.72 |
437.2 |
5.9 |
441.1 |
6.9 |
462.0 |
29.7 |
437.2 |
5.9 |
94.6 |
filename:20874.xml
