This sample belongs to: Tshering Lama Sherpa
Aliquot Name: OK13
IGSN:
Stratigraphic Formation Name: Lesser Himalayan Augen gneiss
Stratigraphic Age: Paleoproterozoic
Rock Type: orthogneiss
Mineral: Zircon
Latitude: 27.35047
Longitude: 86.52332
Internal Uncertainty Level: 2 sigma
External Uncertainty 206/238 (% two sigma): 1.46
External Uncertainty 206/207 (% two sigma): 0.69
Analysis Purpose: Igneous zircon geochronology
Laboratory Name: Arizona LaserChron Center
Analyst Name: Tshering Z.L. Sherpa
Aliquot Reference: Sundell, K.E., Gehrels, G., Pecha, M. (2020), Rapid U-Pb geochronology by laser ablation multicollector ICP-MS, Geostandards and Geoanalytical Research.
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. |
| OK13_8 |
476 |
237962 |
7.6 |
9.07 |
0.7 |
4.7254 |
2.1 |
0.311 |
1.9 |
0.94 |
1745.6 |
29.4 |
1771.8 |
17.3 |
1802.7 |
13.3 |
1802.7 |
13.3 |
96.8 |
| OK13_12 |
471 |
3482483 |
27.3 |
7.311 |
1.2 |
6.345 |
3.3 |
0.3366 |
3.1 |
0.93 |
1870.2 |
50.2 |
2024.7 |
29.0 |
2186.1 |
20.6 |
2186.1 |
20.6 |
85.5 |
| OK13_13 |
382 |
3463635 |
8.2 |
9.047 |
0.6 |
4.5793 |
3.0 |
0.3006 |
3.0 |
0.98 |
1694.3 |
44.5 |
1745.5 |
25.4 |
1807.4 |
10.9 |
1807.4 |
10.9 |
93.7 |
| OK13_16 |
730 |
2334355 |
5.5 |
9.048 |
1.1 |
4.5813 |
3.4 |
0.3008 |
3.2 |
0.95 |
1695.2 |
47.9 |
1745.9 |
28.2 |
1807.1 |
19.6 |
1807.1 |
19.6 |
93.8 |
| OK13_17 |
386 |
301307 |
9.2 |
9.1 |
0.6 |
4.7632 |
2.5 |
0.3145 |
2.4 |
0.97 |
1762.9 |
37.1 |
1778.4 |
20.9 |
1796.7 |
11.5 |
1796.7 |
11.5 |
98.1 |
| OK13_23 |
371 |
657210 |
10.0 |
9.087 |
0.6 |
4.6276 |
2.0 |
0.3051 |
1.9 |
0.95 |
1716.7 |
28.9 |
1754.3 |
16.9 |
1799.3 |
11.7 |
1799.3 |
11.7 |
95.4 |
| OK13_26 |
565 |
150835 |
7.0 |
9.014 |
0.9 |
4.4663 |
2.4 |
0.2921 |
2.3 |
0.93 |
1652.1 |
32.8 |
1724.7 |
20.0 |
1814.1 |
15.8 |
1814.1 |
15.8 |
91.1 |
| OK13_27 |
470 |
1662750 |
8.3 |
8.993 |
0.8 |
4.6642 |
2.2 |
0.3044 |
2.1 |
0.94 |
1712.9 |
31.1 |
1760.8 |
18.4 |
1818.2 |
13.8 |
1818.2 |
13.8 |
94.2 |
| OK13_28 |
597 |
2198622 |
9.3 |
9.065 |
0.7 |
4.7443 |
2.1 |
0.3121 |
2.0 |
0.95 |
1750.9 |
31.1 |
1775.1 |
17.9 |
1803.7 |
12.0 |
1803.7 |
12.0 |
97.1 |
| OK13_29 |
349 |
179138 |
9.7 |
9.042 |
0.9 |
4.6997 |
2.3 |
0.3083 |
2.1 |
0.93 |
1732.6 |
32.2 |
1767.2 |
19.1 |
1808.3 |
15.6 |
1808.3 |
15.6 |
95.8 |
| OK13_30 |
548 |
11751881 |
8.6 |
9.022 |
0.7 |
4.2959 |
4.0 |
0.2812 |
4.0 |
0.99 |
1597.4 |
55.9 |
1692.6 |
33.0 |
1812.5 |
11.8 |
1812.5 |
11.8 |
88.1 |
| OK13_31 |
482 |
471449 |
10.3 |
9.055 |
0.7 |
4.3431 |
4.3 |
0.2853 |
4.2 |
0.99 |
1618.2 |
60.5 |
1701.6 |
35.4 |
1805.9 |
12.9 |
1805.9 |
12.9 |
89.6 |
| OK13_32 |
381 |
2629453 |
6.9 |
9.099 |
0.9 |
4.4769 |
4.0 |
0.2956 |
3.9 |
0.97 |
1669.4 |
57.4 |
1726.7 |
33.3 |
1796.9 |
16.5 |
1796.9 |
16.5 |
92.9 |
| OK13_33 |
454 |
742429 |
7.4 |
9.055 |
0.6 |
4.4144 |
3.6 |
0.29 |
3.5 |
0.99 |
1641.6 |
51.2 |
1715.0 |
29.7 |
1805.9 |
11.3 |
1805.9 |
11.3 |
90.9 |
| OK13_34 |
568 |
841654 |
11.5 |
9.011 |
0.9 |
4.5992 |
4.6 |
0.3007 |
4.6 |
0.98 |
1694.8 |
68.1 |
1749.1 |
38.8 |
1814.7 |
15.8 |
1814.7 |
15.8 |
93.4 |
| OK13_35 |
375 |
658216 |
9.4 |
9.122 |
0.6 |
4.3508 |
1.8 |
0.288 |
1.7 |
0.95 |
1631.3 |
24.2 |
1703.1 |
14.6 |
1792.4 |
10.2 |
1792.4 |
10.2 |
91.0 |
| OK13_36 |
366 |
1214765 |
7.8 |
9.084 |
0.8 |
4.2576 |
2.7 |
0.2806 |
2.6 |
0.95 |
1594.6 |
36.6 |
1685.2 |
22.4 |
1799.9 |
15.4 |
1799.9 |
15.4 |
88.6 |
| OK13_39 |
670 |
568169 |
11.9 |
8.299 |
0.9 |
4.7682 |
2.0 |
0.2871 |
1.8 |
0.90 |
1627.1 |
25.3 |
1779.3 |
16.5 |
1962.8 |
15.6 |
1962.8 |
15.6 |
82.9 |
| OK13_41 |
562 |
22931548 |
9.8 |
8.576 |
0.4 |
5.052 |
1.8 |
0.3144 |
1.8 |
0.97 |
1762.2 |
27.5 |
1828.1 |
15.6 |
1903.9 |
7.9 |
1903.9 |
7.9 |
92.6 |
| OK13_43 |
453 |
304505 |
7.7 |
9.081 |
0.6 |
4.6225 |
1.6 |
0.3046 |
1.5 |
0.93 |
1713.9 |
22.5 |
1753.3 |
13.4 |
1800.6 |
10.9 |
1800.6 |
10.9 |
95.2 |
| OK13_46 |
445 |
4213985 |
10.2 |
9.024 |
0.6 |
4.6527 |
2.4 |
0.3046 |
2.3 |
0.96 |
1714.3 |
34.3 |
1758.8 |
19.7 |
1812.0 |
11.4 |
1812.0 |
11.4 |
94.6 |
| OK13_47 |
833 |
1163369 |
14.1 |
8.58 |
0.6 |
4.2857 |
1.8 |
0.2668 |
1.8 |
0.95 |
1524.6 |
23.9 |
1690.6 |
15.2 |
1903.1 |
10.0 |
1903.1 |
10.0 |
80.1 |
| OK13_48 |
493 |
225658 |
8.2 |
9.073 |
0.7 |
4.7519 |
2.1 |
0.3128 |
2.0 |
0.94 |
1754.6 |
30.3 |
1776.4 |
17.6 |
1802.1 |
12.9 |
1802.1 |
12.9 |
97.4 |
| OK13_49 |
399 |
680238 |
10.9 |
9.071 |
0.7 |
4.5868 |
1.8 |
0.3019 |
1.6 |
0.93 |
1700.7 |
24.6 |
1746.9 |
14.8 |
1802.6 |
12.1 |
1802.6 |
12.1 |
94.3 |
| OK13_50 |
334 |
1662909 |
8.3 |
9.074 |
1.0 |
4.6604 |
2.6 |
0.3069 |
2.4 |
0.93 |
1725.2 |
36.4 |
1760.2 |
21.6 |
1801.9 |
17.5 |
1801.9 |
17.5 |
95.7 |
filename:27537.xml
