|
Core, section, interval (cm)
|
Sample
|
Mineral
|
N
|
Type
|
Age (Ma)
|
Error (1
 )
|
MSWD
|
Isochron age (Ma)
|
Error
(1 )
|
Initial 40Ar/36Ar
|
Error
(1 )
|
MSWD
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 161-977A-60X-1, 0-7 |
7521 |
Plagioclase | 9 | SX-MAA | 9.55 | 0.49 | 1.64 | 9.46 | 0.11 |
307 |
12 | 1.32 |
| 977A-60X-1, 0-7 |
7521 |
Sanidine | 1 | SX-A | 9.25 | 0.02 |
|
|
|
|
|
|
| 977A-60X-1, 0-7 |
7521 |
Biotite | 14 | SH-IA | 9.49 | 0.05 | 9.41 | 0.10 |
298 |
5 | 6.88 | |
| 977A-61X-1, 0-7 |
7522 |
Plagioclase | 10 | SX-MAA | 9.70 | 0.07 | 3.98 | 9.51 | 0.14 |
341 |
31 | 2.71 |
| 977A-61X-1, 0-7 |
7522 |
Sanidine | 1 | SX-A | 9.29 | 0.02 |
|
|
|
|
|
|
| 977A-61X-1, 0-7 |
7522 |
Biotite | 7 | SH-IA | 9.25 | 0.05 | 9.29 | 0.10 |
296 |
12 | 1.64 | |
| 977A-62X-1, 13-19 |
7523 |
Amphibole | 7 | SX-MAA | 9.90 | 0.40 | 0.80 | 9.95 | 0.64 |
294 |
10 | 0.94 |
| 977A-63X-1, 0-5 |
7524 |
Plagioclase | 6 | SX-MAA | 13.00 | 0.30 | 6.10 | 12.47 | 0.92 |
303 |
13 | 7.06 |
|
|
|
|
4 | SX-MAA | 12.10 | 0.20 | 0.36 |
|
|
|
|
|
| 978A-47R-1, 0-20 |
7525 |
Plagioclase | 11 | SX-MAA | 6.20 | 0.30 | 3.60 | 6.50 | 0.40 |
293 |
4 | 3.80 |
|
|
|
|
10 | SX-MAA | 6.10 | 0.30 | 2.45 | 6.40 | 0.30 |
290 |
3 | 1.63 |
Note: SX-MAA = single crystal mean apparent age, SX-A = single crystal apparent age, SH-IA = step-heating integral age, N = number of single crystal analyses for SX, number of heating steps for SH, MSWD = mean square weighted deviates.