This sample belongs to: Amy Moser
Aliquot Name: ECF-11
IGSN: IEAM20005
Stratigraphic Formation Name: Orocopia Schist
Stratigraphic Age:
Rock Type: schist
Mineral: zircon
Latitude: 33.636625
Longitude: -115.977317
Internal Uncertainty Level:
External Uncertainty 206/238 (% two sigma):
External Uncertainty 206/207 (% two sigma):
Analysis Purpose: zircon crystallization age
Laboratory Name: University of Utah ICP-MS Metals and Strontium Isotope Facility
Analyst Name: Amy Moser, Michael Stearns
Aliquot Reference: 91500 and Plešovice
Aliquot Instrumental Method: LA-ICP-MS
Aliquot Instrumental Reference:
Aliquot Instrumental Reference: IEAM20005
| 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. |
| 1 |
|
|
|
17.1821 |
3.4 |
0.1007 |
7.5 |
0.013 |
1.2 |
0.10 |
83.0 |
2.0 |
97.0 |
7.0 |
537.0 |
18.0 |
83.0 |
2.0 |
85.6 |
| 2 |
|
|
|
18.315 |
3.0 |
0.0898 |
7.4 |
0.0121 |
1.2 |
0.04 |
78.0 |
2.0 |
87.0 |
6.0 |
396.0 |
12.0 |
78.0 |
2.0 |
88.8 |
| 3 |
|
|
|
17.9533 |
3.5 |
0.0884 |
7.6 |
0.012 |
1.2 |
0.09 |
77.0 |
2.0 |
86.0 |
7.0 |
440.0 |
15.0 |
77.0 |
2.0 |
89.6 |
| 4A |
|
|
|
14.7059 |
10.9 |
0.107 |
12.4 |
0.0112 |
2.3 |
0.11 |
72.0 |
2.0 |
103.0 |
13.0 |
869.0 |
95.0 |
72.0 |
2.0 |
69.4 |
| 4B |
|
|
|
1.9194 |
2.7 |
1.555 |
7.6 |
0.0228 |
2.5 |
0.75 |
146.0 |
3.0 |
952.0 |
72.0 |
4302.0 |
115.0 |
146.0 |
3.0 |
15.3 |
| 5A |
|
|
|
8.5426 |
2.1 |
3.316 |
7.1 |
0.203 |
1.4 |
0.81 |
1191.0 |
24.0 |
1485.0 |
106.0 |
1912.0 |
40.0 |
1912.0 |
40.0 |
80.2 |
| 5B |
|
|
|
14.8368 |
3.6 |
0.2554 |
7.8 |
0.0286 |
2.0 |
0.55 |
182.0 |
4.0 |
231.0 |
18.0 |
850.0 |
30.0 |
182.0 |
4.0 |
78.6 |
| 6 |
|
|
|
8.0795 |
2.0 |
4.522 |
7.0 |
0.2693 |
1.0 |
0.61 |
1537.0 |
31.0 |
1735.0 |
122.0 |
2011.0 |
41.0 |
2011.0 |
41.0 |
88.6 |
| 7 |
|
|
|
19.2715 |
2.7 |
0.1153 |
7.3 |
0.0165 |
1.1 |
0.52 |
106.0 |
2.0 |
111.0 |
8.0 |
281.0 |
8.0 |
106.0 |
2.0 |
95.3 |
| 8 |
|
|
|
19.6078 |
5.8 |
0.0797 |
8.8 |
0.0111 |
1.4 |
0.07 |
71.0 |
2.0 |
78.0 |
7.0 |
241.0 |
14.0 |
71.0 |
2.0 |
91.7 |
| 9 |
|
|
|
9.5465 |
2.1 |
3.413 |
7.1 |
0.241 |
1.1 |
0.69 |
1392.0 |
28.0 |
1507.0 |
107.0 |
1710.0 |
36.0 |
1710.0 |
36.0 |
92.3 |
| 10 |
|
|
|
18.2715 |
2.3 |
0.2808 |
7.1 |
0.0351 |
1.4 |
0.46 |
222.0 |
5.0 |
251.0 |
18.0 |
401.0 |
9.0 |
222.0 |
5.0 |
88.5 |
| 11 |
|
|
|
20.79 |
5.0 |
0.1067 |
8.5 |
0.0165 |
1.6 |
0.18 |
105.0 |
3.0 |
103.0 |
9.0 |
104.0 |
5.0 |
105.0 |
3.0 |
102.3 |
| 12 |
|
|
|
20.7469 |
3.5 |
0.1128 |
7.5 |
0.0175 |
1.1 |
0.02 |
112.0 |
3.0 |
109.0 |
8.0 |
109.0 |
4.0 |
112.0 |
3.0 |
102.9 |
| 13 |
|
|
|
19.2678 |
4.5 |
0.0855 |
8.0 |
0.0114 |
1.7 |
0.10 |
73.0 |
2.0 |
83.0 |
7.0 |
281.0 |
13.0 |
73.0 |
2.0 |
87.8 |
| 14 |
|
|
|
21.3675 |
3.6 |
0.0753 |
7.6 |
0.0115 |
1.2 |
0.05 |
73.0 |
2.0 |
74.0 |
6.0 |
39.0 |
1.0 |
73.0 |
2.0 |
99.7 |
| 15 |
|
|
|
20.8333 |
9.4 |
0.0855 |
11.4 |
0.0129 |
2.1 |
0.05 |
83.0 |
2.0 |
83.0 |
10.0 |
99.0 |
9.0 |
83.0 |
2.0 |
99.2 |
| 16 |
|
|
|
20.8768 |
3.9 |
0.0797 |
7.8 |
0.0121 |
1.2 |
0.13 |
78.0 |
2.0 |
78.0 |
6.0 |
94.0 |
4.0 |
78.0 |
2.0 |
100.0 |
| 17 |
|
|
|
21.0881 |
2.8 |
0.0816 |
7.3 |
0.0126 |
1.1 |
0.10 |
81.0 |
2.0 |
80.0 |
6.0 |
70.0 |
2.0 |
81.0 |
2.0 |
101.1 |
| 18 |
|
|
|
9.6759 |
2.1 |
3.318 |
7.1 |
0.2328 |
1.1 |
0.31 |
1349.0 |
27.0 |
1485.0 |
105.0 |
1685.0 |
35.0 |
1685.0 |
35.0 |
90.8 |
| 19A |
|
|
|
21.3675 |
3.8 |
0.0938 |
7.8 |
0.014 |
1.4 |
0.29 |
90.0 |
2.0 |
91.0 |
7.0 |
39.0 |
1.0 |
90.0 |
2.0 |
98.4 |
| 19B |
|
|
|
11.4943 |
2.4 |
0.4329 |
7.4 |
0.0369 |
1.5 |
0.71 |
234.0 |
5.0 |
365.0 |
27.0 |
1360.0 |
33.0 |
234.0 |
5.0 |
64.0 |
| 20 |
|
|
|
20.9205 |
3.0 |
0.0973 |
7.4 |
0.0147 |
1.2 |
0.10 |
94.0 |
2.0 |
94.0 |
7.0 |
89.0 |
3.0 |
94.0 |
2.0 |
99.6 |
| 21 |
|
|
|
21.097 |
3.2 |
0.0788 |
7.4 |
0.012 |
1.3 |
0.04 |
77.0 |
2.0 |
77.0 |
6.0 |
69.0 |
2.0 |
77.0 |
2.0 |
99.6 |
| 22 |
|
|
|
9.3519 |
2.1 |
4.487 |
7.1 |
0.3079 |
1.3 |
0.80 |
1730.0 |
35.0 |
1729.0 |
123.0 |
1748.0 |
37.0 |
1748.0 |
37.0 |
100.1 |
| 23 |
|
|
|
8.4459 |
3.7 |
0.2356 |
7.9 |
0.0137 |
2.1 |
0.62 |
87.0 |
2.0 |
215.0 |
17.0 |
1932.0 |
72.0 |
87.0 |
2.0 |
40.7 |
| 24 |
|
|
|
20.9161 |
2.2 |
0.0839 |
7.1 |
0.0128 |
1.1 |
0.04 |
82.0 |
2.0 |
82.0 |
6.0 |
90.0 |
2.0 |
82.0 |
2.0 |
100.3 |
| 25 |
|
|
|
20.8768 |
3.0 |
0.0867 |
7.4 |
0.0131 |
1.2 |
0.05 |
84.0 |
2.0 |
84.0 |
6.0 |
94.0 |
3.0 |
84.0 |
2.0 |
99.6 |
| 26 |
|
|
|
9.3379 |
2.1 |
4.269 |
7.1 |
0.2926 |
1.2 |
0.79 |
1655.0 |
33.0 |
1687.0 |
119.0 |
1750.0 |
36.0 |
1750.0 |
36.0 |
98.1 |
| 27 |
|
|
|
21.2495 |
2.8 |
0.0898 |
7.3 |
0.0136 |
1.3 |
0.28 |
87.0 |
2.0 |
87.0 |
6.0 |
52.0 |
1.0 |
87.0 |
2.0 |
100.0 |
| 28 |
|
|
|
20.79 |
7.7 |
0.0943 |
10.3 |
0.0141 |
1.7 |
0.11 |
90.0 |
2.0 |
92.0 |
9.0 |
104.0 |
8.0 |
90.0 |
2.0 |
98.6 |
| 29 |
|
|
|
21.3083 |
2.3 |
0.0825 |
7.1 |
0.0122 |
1.4 |
0.47 |
78.0 |
2.0 |
80.0 |
6.0 |
46.0 |
1.0 |
78.0 |
2.0 |
97.0 |
| 30 |
|
|
|
21.097 |
3.1 |
0.082 |
7.4 |
0.0127 |
1.1 |
0.36 |
81.0 |
2.0 |
80.0 |
6.0 |
69.0 |
2.0 |
81.0 |
2.0 |
101.5 |
| 31 |
|
|
|
12.5549 |
2.3 |
1.453 |
7.2 |
0.1356 |
1.3 |
0.74 |
820.0 |
16.0 |
911.0 |
65.0 |
1188.0 |
27.0 |
1188.0 |
27.0 |
90.0 |
| 32 |
|
|
|
20.6911 |
2.7 |
0.1313 |
7.2 |
0.0198 |
1.2 |
0.25 |
127.0 |
3.0 |
125.0 |
9.0 |
115.0 |
3.0 |
127.0 |
3.0 |
101.0 |
| 33 |
|
|
|
6.9565 |
2.0 |
7.318 |
7.0 |
0.3767 |
1.1 |
0.83 |
2061.0 |
41.0 |
2151.0 |
151.0 |
2273.0 |
46.0 |
2273.0 |
46.0 |
95.8 |
| 34 |
|
|
|
18.7441 |
2.2 |
0.2887 |
7.1 |
0.0402 |
1.1 |
0.55 |
254.0 |
5.0 |
258.0 |
18.0 |
344.0 |
7.0 |
254.0 |
5.0 |
98.7 |
| 35 |
|
|
|
20.2429 |
4.3 |
0.0805 |
7.9 |
0.0121 |
1.3 |
0.03 |
78.0 |
2.0 |
79.0 |
6.0 |
167.0 |
7.0 |
78.0 |
2.0 |
98.7 |
| 36A |
|
|
|
21.322 |
8.1 |
0.0804 |
9.5 |
0.0114 |
2.3 |
0.19 |
73.0 |
2.0 |
79.0 |
7.0 |
44.0 |
4.0 |
73.0 |
2.0 |
93.1 |
| 36B |
|
|
|
1.8403 |
2.6 |
2.449 |
7.8 |
0.0323 |
2.9 |
0.92 |
205.0 |
4.0 |
1257.0 |
98.0 |
4363.0 |
111.0 |
205.0 |
4.0 |
16.3 |
| 36C |
|
|
|
1.4225 |
2.5 |
7.76 |
7.6 |
0.0805 |
2.9 |
0.85 |
499.0 |
10.0 |
2204.0 |
166.0 |
4737.0 |
120.0 |
499.0 |
10.0 |
22.6 |
| 37 |
|
|
|
20.1207 |
4.1 |
0.0812 |
7.9 |
0.0121 |
1.3 |
0.01 |
77.0 |
2.0 |
79.0 |
6.0 |
181.0 |
7.0 |
77.0 |
2.0 |
97.4 |
| 38 |
|
|
|
21.978 |
9.9 |
0.0673 |
10.3 |
0.0105 |
2.5 |
0.00 |
67.0 |
2.0 |
66.0 |
7.0 |
-29.0 |
-3.0 |
67.0 |
2.0 |
101.6 |
| 39 |
|
|
|
12.0482 |
2.1 |
2.541 |
7.1 |
0.2202 |
1.4 |
0.66 |
1283.0 |
26.0 |
1284.0 |
91.0 |
1269.0 |
27.0 |
1269.0 |
27.0 |
99.9 |
| 40 |
|
|
|
19.253 |
2.3 |
0.2593 |
7.2 |
0.0345 |
1.4 |
0.66 |
219.0 |
4.0 |
234.0 |
17.0 |
283.0 |
6.0 |
219.0 |
4.0 |
93.4 |
| 41 |
|
|
|
20.284 |
3.5 |
0.1005 |
7.6 |
0.0145 |
1.2 |
0.32 |
93.0 |
2.0 |
97.0 |
7.0 |
162.0 |
6.0 |
93.0 |
2.0 |
95.2 |
| 42 |
|
|
|
20.9468 |
2.6 |
0.0787 |
7.3 |
0.0119 |
1.4 |
0.48 |
76.0 |
2.0 |
77.0 |
6.0 |
86.0 |
2.0 |
76.0 |
2.0 |
99.3 |
| 43 |
|
|
|
20.5846 |
2.6 |
0.0821 |
7.3 |
0.0125 |
1.4 |
0.49 |
80.0 |
2.0 |
80.0 |
6.0 |
128.0 |
3.0 |
80.0 |
2.0 |
99.6 |
| 44 |
|
|
|
20.9512 |
2.7 |
0.0893 |
7.4 |
0.0131 |
2.1 |
0.59 |
84.0 |
2.0 |
87.0 |
6.0 |
86.0 |
2.0 |
84.0 |
2.0 |
96.6 |
filename:22846.xml
