This sample belongs to: Gonzalo Ronda
Sample Name: TOR7
IGSN: IEGMR001A
Laboratory: Dalhousie Noble Gas
Analyst: Roman Kislytsin
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: TOR7
Sample Description:
GeoObject Type: Grab
Geoobject Classification:
Collection Method: Manual
Material: Rock
Latitude: -47.82232
Longitude: -73.58621
Sample Comment:
Collector: Gonzalo Ronda
Material Classification:
Primary Location Name:
Primary Location Type:
Location Description:
Locality:
Locality Description:
Country:
Provice:
County:
City Or Township:
Platform:
Platform ID:
Original Archival Institution:
Original Archival Contact:
Most Recent Archival Institution: Universidad de Buenos Aires
Most Recent Archival Contact: gonzaloronda@gmail.com
| Analysis Purpose |
Value |
Error |
Age Type |
MSWD |
Age Error Systematic |
Included Analyses |
Comment |
| Cooling |
17.50 |
3.24 |
average age with standard error |
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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 |
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| zTOR7-1 |
zircon |
14.786382675171 |
0.056295696645975 |
518.48675537109 |
912.60556640625 |
5.7975273132324 |
1.7601328422615 |
48.087799072266 |
16.876125335693 |
0.82072597742081 |
| zTOR7-2 |
zircon |
15.619839668274 |
0.060852322727442 |
217.23492431641 |
323.95603027344 |
9.2245811462402 |
1.491270481912 |
20.204063415527 |
14.88347530365 |
0.81563204526901 |
| zTOR7-3 |
zircon |
15.668009757996 |
0.062254324555397 |
577.77807617188 |
757.62563476563 |
20.061254882813 |
1.3112744598849 |
50.764049530029 |
9.9069452285767 |
0.79322457313538 |
| zTOR7-4 |
zircon |
18.852188110352 |
0.070336163043976 |
319.57794189453 |
645.31030273438 |
16.076864624023 |
2.0192579591346 |
37.889099121094 |
9.795524597168 |
0.78834474086761 |
| zTOR7-5 |
zircon |
22.592525482178 |
0.092103838920593 |
152.52972412109 |
167.33067626953 |
2.6646595001221 |
1.0970365103177 |
19.135084152222 |
13.815487861633 |
0.81684619188309 |
filename:26070.xml