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: zircon
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 |
56.64 |
7.85 |
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 |
| z12LC16-1 |
zircon |
59.955600738525 |
4.796450138092 |
217.76800537109 |
173.17700195312 |
0.75880700349808 |
0.79523801803589 |
64.861701965332 |
5.894889831543 |
0.7730730175972 |
| z12LC16-2 |
zircon |
54.934600830078 |
4.3947601318359 |
206.21099853516 |
121.38500213623 |
0.75525397062302 |
0.58864498138428 |
51.552600860596 |
3.6964900493622 |
0.73896598815918 |
| z12LC16-3 |
zircon |
55.018501281738 |
4.4014801979065 |
163.7619934082 |
112.24299621582 |
0.67533999681473 |
0.68540197610855 |
41.142501831055 |
3.4711899757385 |
0.72689402103424 |
filename:14638.xml
