This sample belongs to: Gonzalo Ronda

Sample Details
Sample Name: TOR6_AFT
IGSN: IEGMR0019
Laboratory: Dalhousie Fission Track
Analyst: Gonzalo Ronda
Mineral: Apatite
Dosimeter Glass: CN5
Dosimeter Glass U ppm:
Irradiation:
Count Date:
Locality:
Rock Type:
Rock Age:
Acquisition system:
Magnification:
Radiation Facility:
Total Thermal Neutron Fluence:
Position in Irradiation Canister (#):
Area of Graticule Square: 0,000000898
No. of Crystals Counted: 23
Zeta Factor: 343.05
Zeta Factor Error (1s): 26.08
Rho d: 1217300
Rho d (% Relative Error):
N d: 5414
Geometry factor (for EDM and Zeta ICPMS methods):
Etchant:
Etching Conditions:
Method - U:
ICPMS Model:
Laser Model and Type:
Instrumental Method References:
U Calibration Standard:
U ppm of Standard:
Specific Denisty of Dated Mineral:
Avagadro Constant:
Registration Factor (Rsp):
Etching Correction Factor (k):
ICPMS Zeta Standard:
Standard Age:
Standard Age Error:
Primary Zeta:
1 sigma Uncertainty:
Session (Modified) Zeta:
1 sigma (Modified) Uncertainty:
Comment:
Chemistry Method:
Chemistry Laboratory:
Chemistry 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:
Spontaneous Fission Decay Constant: 8.46E-17
Spontaneous Fission Decay Constant Error:
238U/235U: 137.88
Fission Decay Constant Reference: Spadavecchia , A. & Hahn, B. (1967). Die Rotationskammer und einige Anwendungen. Helvetica Physica Acta, 40, p. 1063-1079
Decay Constant References: 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
Decay Constant Comment:

Sample Metadata
Sample ID: TOR6
Sample Description:
GeoObject Type: Grab
Geoobject Classification:
Collection Method: Manual
Material: Rock
Latitude: -47.81935
Longitude: -73.71389
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

Age(s)
Analysis Purpose Preferred Age Type Pooled Age Pooled Age Error +95% Pooled Age Error -95% Chi-squared Value Degrees of Freedom P (Chi-suqared) Mean Crystal Age Mean Crystal Age Error +95% Mean Crystal Age Error -95% Central Age Central Age Error +95% Central Age Error -95% Central Age - Age Dispersion (%) Binomial Age Binomial Age Error +95% Binomial Age Error -95% Other Age Other Age Error Preferred Age Explanation Age Reference
Cooling Central 87 13.5 1.9 1.9

Apatite Age
Grain ID N s N i Na Dpar Dper Rmr0 Rho s Rho i Rho s / Rho i Area (Ω) # of Etch Figures 238U/43Ca error (1σ) U ppm U error (1s) Age (Ma) Age error +1s Age error -1s CaO P2O5 F Cl SrO BaO Si02 Na2O CeO2 FeO Total
1 5 94 102.79280116504
2 3 39 32.832261091044
3 2 28 27.078268215088
4 1 6 14.468454040121
5 5 90 59.120329123941
6 6 73 49.982943918603
7
8 3 65 59.810363085854
9 5 90 82.659390889214
10 3 126 57.183782198571
11 5 80 52.53161774567
12 3 48 69.359542752334
13 4 49 40.122136011259
14 1 33 36.538411241321
15 2 47 60.633952008138
16 1 31 19.732745394719
17 3 63 37.951867905241
18 4 30 18.152345030336
19 5 67 61.023487309218
20 5 33 20.823444237743
21 4 55 70.617185295821
22 4 34 35.870636439469
23 6 60 35.191732057587
24 3 44 19.476765054009

Grain Lengths
Grain ID Length Angle to C axis Dpar Tint or Tincle Depth Width Probability of this being a confined length Number of times Intersected
filename:26088.xml
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