This sample belongs to: Tandis Bidgoli
Sample Name: 12LC16
IGSN: TSB00000E
Laboratory: KU IGL
Analyst: Bidgoli
Instrumental Method - He:
Instrumental Method Reference - He:
Instrumental Method - U-Th-Sm:
Instrumental Method Reference - U-Th-Sm:
Alpha Ejection Correction Method:
Alpha Ejection Correction Method Reference:
Mineral: apatite
Comment:
238U Decay Constant: 1.55125E-10
238U Decay Constant Error:
235U Decay Constant: 9.84850E-10
235U Decay Constant Error:
232Th Decay Constant : 4.94750E-11
232Th Decay Constant Error:
230Th Decay Constant:
230Th Decay Constant Error:
238U/235U: 137.88
Decay Constant Reference: Steiger, R.H. and Jager, E., 1977, Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology. Earth and Planetary Science Letters, v. 36, no. 3, p. 359-362.
147Sm Decay Constant: 6.54E-12
147Sm Decay Constant Error:
147Sm Decay Constant Reference: Lugmair, G.W., and Marti, K., 1978, Lunar initial 143Nd/144Nd: differential evolution of the lunar crust and mantle: Earth and Planetary Science Letter, v. 39, p. 349-357.
Decay Constant Comment:
Sample ID: 12LC16
Sample Description: Not Provided
GeoObject Type: Grab
Geoobject Classification: Metamorphic
Collection Method: Hand Sample
Material: Rock
Latitude: 35.684325
Longitude: -117.147245
Sample Comment:
Collector: Tandis Bidgoli
Material Classification: Metamorphic
Primary Location Name: Slate Range
Primary Location Type: Mountain Range
Location Description: Not Provided
Locality: Not Provided
Locality Description: Not Provided
Country: Not Provided
Provice: Not Provided
County: Not Provided
City Or Township: Not Provided
Platform: Not Provided
Platform ID: Not Provided
Original Archival Institution: not provided
Original Archival Contact: not provided
Most Recent Archival Institution: University of Kansas, Department of Geology
Most Recent Archival Contact: J. Douglas Walker
| Analysis Purpose |
Value |
Error |
Age Type |
MSWD |
Age Error Systematic |
Included Analyses |
Comment |
| Cooling |
26.04 |
3.23 |
weighted mean of mulitple aliquots (AEC) |
|
|
1,2,3 |
Average age and standard deviation |
Data Reduction Parameters
Spike Type U-Th-Sm:
Spike Type He:
Standard Mineral:
Standard Mineral Reference:
Standard True Age:
Standard True Age Error:
Standard Measured Age:
Standard Measured Age Error:
Data Reduction Comment:
| Fraction Name |
Mineral |
Age, Ma |
err., Ma |
U (ppm) |
Th (ppm) |
147Sm (ppm) |
Th/U |
He (nmol/g) |
Mass (ug) |
Ft |
| 12LC16-1 |
apatite |
29.475500106812 |
1.7685300111771 |
42.268798828125 |
70.938003540039 |
25.327699661255 |
1.6782599687576 |
6.1123700141907 |
1.9904600381851 |
0.64827001094818 |
| 12LC16-2 |
apatite |
25.568599700928 |
1.5341199636459 |
23.769100189209 |
27.573099136353 |
14.840000152588 |
1.1600400209427 |
2.7378499507904 |
2.0064001083374 |
0.65246498584747 |
| 12LC16-3 |
apatite |
23.071100234985 |
1.384269952774 |
24.101900100708 |
40.087100982666 |
33.568500518799 |
1.6632299423218 |
2.7256200313568 |
1.877699971199 |
0.64652699232101 |
| 12LC16-4 |
apatite |
50.371299743652 |
3.0222799777985 |
40.302799224854 |
65.60359954834 |
29.995000839233 |
1.627769947052 |
9.6741695404053 |
1.535670042038 |
0.63395202159882 |
filename:14637.xml
