This sample belongs to: Chance Ronemus
Aliquot Name: 1MT418
IGSN:
Stratigraphic Formation Name: Chinches Formation
Stratigraphic Age: Miocene
Rock Type: Tuff
Mineral: Zircon
Latitude: -31.91083
Longitude: -69.85674
Internal Uncertainty Level: one sigma
External Uncertainty 206/238 (% two sigma): 0.98289017792598
External Uncertainty 206/207 (% two sigma): 0.86230237030339
Analysis Purpose: igneous zircon geochronology
Laboratory Name: Arizona LaserChron Center
Analyst Name: Chance Ronemus
Aliquot Reference: this study
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: Gehrels, G. and Pecha, M., 2014, Detrital zircon U-Pb geochronology and Hf isotope geochemistry of Paleozoic and Triassic passive margin strata of western North America: Geosphere, v. 10 (1), p. 49-65.
| 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. |
| 1M418 Spot 1 |
182 |
58193 |
3.1 |
11.1278 |
0.6 |
3.1159 |
5.2 |
0.2516 |
5.0 |
0.97 |
1446.6 |
65.0 |
1436.6 |
39.7 |
1421.8 |
23.7 |
1421.8 |
23.7 |
1.7 |
| 1M418 Spot 2 |
212 |
347348 |
2.1 |
18.329 |
1.4 |
0.497 |
7.1 |
0.0661 |
6.5 |
0.92 |
412.6 |
26.1 |
409.7 |
23.9 |
393.2 |
62.2 |
412.6 |
26.1 |
4.9 |
| 1M418 Spot 3 |
614 |
16541 |
6.4 |
13.049 |
1.7 |
1.3865 |
13.2 |
0.1313 |
12.7 |
0.96 |
795.1 |
95.3 |
883.2 |
77.9 |
1110.8 |
69.9 |
1110.8 |
69.9 |
-28.4 |
| 1M418 Spot 4 |
122 |
17487 |
1.2 |
10.1115 |
1.0 |
3.3556 |
14.5 |
0.2462 |
14.3 |
0.99 |
1418.8 |
182.2 |
1494.1 |
113.2 |
1602.6 |
38.5 |
1602.6 |
38.5 |
-11.5 |
| 1M418 Spot 5 |
339 |
62047 |
3.4 |
11.5905 |
4.5 |
2.1132 |
11.2 |
0.1777 |
6.7 |
0.60 |
1054.5 |
65.1 |
1153.1 |
77.5 |
1343.5 |
174.5 |
1343.5 |
174.5 |
-21.5 |
| 1M418 Spot 6 |
94 |
32150 |
2.2 |
11.336 |
0.9 |
3.0942 |
6.2 |
0.2545 |
5.9 |
0.95 |
1461.7 |
77.5 |
1431.2 |
47.7 |
1386.3 |
35.9 |
1386.3 |
35.9 |
5.4 |
| 1M418 Spot 7 |
350 |
120144 |
2.3 |
10.967 |
0.8 |
3.046 |
6.7 |
0.2424 |
6.5 |
0.97 |
1399.1 |
82.0 |
1419.2 |
51.3 |
1449.6 |
30.8 |
1449.6 |
30.8 |
-3.5 |
| 1M418 Spot 8 |
462 |
26449 |
1.8 |
17.8386 |
0.8 |
0.5639 |
5.5 |
0.073 |
5.2 |
0.96 |
454.1 |
23.0 |
454.1 |
20.1 |
453.7 |
35.8 |
454.1 |
23.0 |
0.1 |
| 1M418 Spot 9 |
82 |
2424 |
2.8 |
11.9377 |
8.3 |
0.6284 |
23.3 |
0.0544 |
16.5 |
0.71 |
341.7 |
54.9 |
495.1 |
91.6 |
1286.3 |
322.2 |
341.7 |
54.9 |
-73.4 |
| 1M418 Spot 10 |
160 |
566386 |
0.8 |
18.1507 |
2.2 |
0.5819 |
8.4 |
0.0766 |
7.1 |
0.85 |
476.0 |
32.6 |
465.7 |
31.4 |
415.1 |
99.9 |
476.0 |
32.6 |
14.7 |
| 1M418 Spot 11 |
73 |
14591 |
2.3 |
14.0289 |
1.7 |
1.5115 |
14.0 |
0.1539 |
13.6 |
0.97 |
922.6 |
116.6 |
935.1 |
85.6 |
964.6 |
70.7 |
964.6 |
70.7 |
-4.4 |
| 1M418 Spot 12 |
94 |
6871 |
1.6 |
17.2482 |
3.0 |
0.7015 |
9.9 |
0.0878 |
7.9 |
0.80 |
542.5 |
40.9 |
539.7 |
41.4 |
528.0 |
131.5 |
542.5 |
40.9 |
2.8 |
| 1M418 Spot 13 |
250 |
4331 |
3.3 |
11.2041 |
4.4 |
1.9836 |
13.2 |
0.1613 |
9.9 |
0.75 |
963.8 |
88.5 |
1110.0 |
89.1 |
1408.7 |
167.1 |
1408.7 |
167.1 |
-31.6 |
| 1M418 Spot 14 |
122 |
112522 |
2.1 |
11.1027 |
1.1 |
3.0583 |
9.6 |
0.2464 |
9.3 |
0.97 |
1419.7 |
119.1 |
1422.3 |
73.6 |
1426.1 |
42.8 |
1426.1 |
42.8 |
-0.4 |
| 1M418 Spot 15 |
150 |
87788 |
1.1 |
18.8752 |
1.8 |
0.3759 |
8.8 |
0.0515 |
8.1 |
0.91 |
323.6 |
25.5 |
324.0 |
24.5 |
326.9 |
81.2 |
323.6 |
25.5 |
-1.0 |
| 1M418 Spot 16 |
1143 |
8168 |
2.2 |
9.9522 |
0.7 |
1.243 |
4.7 |
0.0898 |
4.5 |
0.95 |
554.1 |
23.8 |
820.3 |
26.6 |
1632.2 |
27.9 |
1632.2 |
27.9 |
-66.1 |
| 1M418 Spot 17 |
275 |
48331 |
1.0 |
8.1977 |
0.9 |
5.0299 |
4.9 |
0.2992 |
4.5 |
0.93 |
1687.2 |
67.5 |
1824.4 |
41.5 |
1984.7 |
32.7 |
1984.7 |
32.7 |
-15.0 |
| 1M418 Spot 18 |
93 |
27609 |
2.4 |
11.2186 |
0.8 |
3.1512 |
12.9 |
0.2565 |
12.8 |
0.99 |
1472.0 |
169.0 |
1445.3 |
99.9 |
1406.3 |
31.0 |
1406.3 |
31.0 |
4.7 |
| 1M418 Spot 19 |
64 |
140 |
1.9 |
19.6814 |
52.0 |
0.0164 |
106.3 |
0.0023 |
21.9 |
0.21 |
15.1 |
3.3 |
16.5 |
17.4 |
231.2 |
|
15.1 |
3.3 |
-93.5 |
| 1M418 Spot 20 |
181 |
145076 |
3.8 |
11.0988 |
1.1 |
3.12 |
7.3 |
0.2513 |
7.0 |
0.96 |
1445.0 |
90.7 |
1437.6 |
56.3 |
1426.8 |
40.7 |
1426.8 |
40.7 |
1.3 |
| 1M418 Spot 22 |
171 |
46646 |
2.5 |
10.9138 |
0.9 |
3.4186 |
5.5 |
0.2707 |
5.2 |
0.95 |
1544.4 |
71.4 |
1508.7 |
43.1 |
1458.8 |
33.5 |
1458.8 |
33.5 |
5.9 |
| 1M418 Spot 24 |
176 |
20078 |
1.9 |
15.9975 |
2.1 |
0.8487 |
8.1 |
0.0985 |
6.9 |
0.85 |
605.7 |
40.0 |
623.9 |
37.8 |
690.7 |
90.7 |
605.7 |
40.0 |
-12.3 |
| 1M418 Spot 25 |
230 |
18250 |
2.9 |
18.4385 |
1.6 |
0.476 |
7.3 |
0.0637 |
6.5 |
0.90 |
398.0 |
25.3 |
395.3 |
23.8 |
379.8 |
70.5 |
398.0 |
25.3 |
4.8 |
| 1M418 Spot 26 |
103 |
26335 |
2.0 |
10.854 |
0.9 |
2.7928 |
9.0 |
0.2199 |
8.8 |
0.98 |
1281.6 |
101.8 |
1353.6 |
67.0 |
1469.3 |
35.8 |
1469.3 |
35.8 |
-12.8 |
| 1M418 Spot 28 |
64 |
7826 |
2.1 |
12.0729 |
1.2 |
2.5145 |
11.2 |
0.2203 |
10.9 |
0.98 |
1283.3 |
127.3 |
1276.2 |
81.4 |
1264.4 |
46.9 |
1264.4 |
46.9 |
1.5 |
| 1M418 Spot 29 |
45 |
3170 |
0.8 |
17.6115 |
3.4 |
0.7818 |
11.4 |
0.0999 |
9.2 |
0.80 |
613.8 |
53.6 |
586.5 |
51.0 |
482.1 |
151.9 |
613.8 |
53.6 |
27.3 |
| 1M418 Spot 30 |
155 |
7491 |
1.9 |
18.8659 |
2.8 |
0.3718 |
9.6 |
0.0509 |
7.9 |
0.82 |
320.0 |
24.6 |
321.0 |
26.5 |
328.0 |
125.9 |
320.0 |
24.6 |
-2.4 |
| 1M418 Spot 31 |
147 |
5267 |
1.8 |
19.9183 |
3.4 |
0.3617 |
9.4 |
0.0523 |
6.5 |
0.69 |
328.5 |
20.8 |
313.5 |
25.4 |
203.5 |
158.0 |
328.5 |
20.8 |
61.4 |
| 1M418 Spot 32 |
206 |
33114 |
5.0 |
12.1084 |
1.0 |
2.4994 |
6.5 |
0.2196 |
6.2 |
0.95 |
1279.7 |
72.5 |
1271.9 |
47.5 |
1258.6 |
38.1 |
1258.6 |
38.1 |
1.7 |
| 1M418 Spot 33 |
95 |
7176 |
1.5 |
18.5326 |
4.8 |
0.2783 |
14.0 |
0.0374 |
10.2 |
0.73 |
236.8 |
23.7 |
249.3 |
30.9 |
368.3 |
216.6 |
236.8 |
23.7 |
-35.7 |
| 1M418 Spot 34 |
122 |
66238 |
1.5 |
11.1906 |
0.8 |
3.064 |
8.4 |
0.2488 |
8.2 |
0.98 |
1432.2 |
105.9 |
1423.7 |
64.4 |
1411.1 |
31.6 |
1411.1 |
31.6 |
1.5 |
| 1M418 Spot 35 |
122 |
37025 |
2.7 |
11.0919 |
0.9 |
2.9907 |
7.3 |
0.2407 |
7.1 |
0.97 |
1390.3 |
88.5 |
1405.3 |
55.7 |
1428.0 |
35.9 |
1428.0 |
35.9 |
-2.6 |
| 1M418 Spot 36 |
90 |
9206 |
2.3 |
18.6708 |
2.2 |
0.4976 |
10.3 |
0.0674 |
9.4 |
0.91 |
420.6 |
38.1 |
410.1 |
34.8 |
351.6 |
97.6 |
420.6 |
38.1 |
19.6 |
| 1M418 Spot 37 |
298 |
66769 |
2.3 |
10.9582 |
0.6 |
2.9559 |
4.1 |
0.235 |
3.9 |
0.95 |
1360.8 |
48.2 |
1396.4 |
31.3 |
1451.1 |
23.8 |
1451.1 |
23.8 |
-6.2 |
| 1M418 Spot 38 |
30 |
11287 |
2.3 |
11.0874 |
1.9 |
3.0581 |
12.4 |
0.246 |
11.8 |
0.95 |
1417.9 |
150.3 |
1422.3 |
94.9 |
1428.8 |
72.1 |
1428.8 |
72.1 |
-0.8 |
| 1M418 Spot 39 |
59 |
26448 |
1.2 |
11.013 |
1.3 |
3.2142 |
10.8 |
0.2568 |
10.5 |
0.97 |
1473.7 |
138.8 |
1460.6 |
84.0 |
1441.6 |
49.3 |
1441.6 |
49.3 |
2.2 |
| 1M418 Spot 40 |
113 |
11149 |
1.5 |
10.9636 |
2.0 |
2.4486 |
11.9 |
0.1948 |
11.2 |
0.94 |
1147.2 |
117.6 |
1257.0 |
85.5 |
1450.2 |
74.6 |
1450.2 |
74.6 |
-20.9 |
filename:27091.xml
