This sample belongs to: Gonzalo Ronda
Sample Name: TOR4
IGSN: IEGMR0017
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: TOR4
Sample Description:
GeoObject Type: Grab
Geoobject Classification:
Collection Method: Manual
Material: Rock
Latitude: -47.81824
Longitude: -73.45842
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 |
16.45 |
4.41 |
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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| zTOR4-1 |
zircon |
23.319032669067 |
0.09222336858511 |
1283.3663330078 |
1732.5962890625 |
35.544982910156 |
1.3500403154584 |
163.888671875 |
7.540075302124 |
0.76895391941071 |
| zTOR4-2 |
zircon |
15.238516807556 |
0.06670930981636 |
1488.2604980469 |
939.35908203125 |
14.282231140137 |
0.63117920771533 |
104.75215148926 |
5.1199011802673 |
0.74527662992477 |
| zTOR4-3 |
zircon |
11.644509315491 |
0.050441209226847 |
1101.0518798828 |
776.97133789063 |
14.527716064453 |
0.70566278672838 |
59.627353668213 |
5.1625051498413 |
0.73918843269348 |
| zTOR4-4 |
zircon |
14.325434684753 |
0.061272047460079 |
791.39593505859 |
614.62421875 |
8.4254867553711 |
0.77663302466229 |
55.711517333984 |
7.0396695137024 |
0.76980292797089 |
| zTOR4-5 |
zircon |
17.739831924438 |
0.075253553688526 |
1082.3355712891 |
894.27490234375 |
11.790558624268 |
0.82624550653793 |
89.458061218262 |
3.8137331008911 |
0.72257351875305 |
filename:26066.xml