This sample belongs to: Gonzalo Ronda

Sample Details
Sample Name: RB1_AFT
IGSN: IEGMR000L
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: 39
Zeta Factor: 343.05
Zeta Factor Error (1s): 26.08
Rho d: 1109500
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: RB1
Sample Description:
GeoObject Type: Grab
Geoobject Classification:
Collection Method: Manual
Material: Rock
Latitude: -47.79792
Longitude: -72.00642
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 11 75.2 7.4 7.4

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 12 53 67
2 25 83 100
3 14 27 49
4 8 25 50
5 15 32 80
6 18 32 70
7 12 30 49
8 18 47 70
9 14 21 40
10 15 31 50
11 8 19 70
12 16 32 70
13 9 28 40
14 7 29 80
15 8 17 49
16 20 59 50
17 12 60 70
18 4 26 50
19 23 48 60
20 4 17 40
21 6 22 50
22 11 31 70
23 20 50 70
24 8 34 35
25 15 38 50
26 10 17 66.632795644773
27 7 17 26.744380814162
28 12 14 50.650718720454
29 13 29 44.852207524375
30 4 18 49.42646491706
31 7 11 62.882127174372
32 21 28 65.341764361193
33 9 5 30.172291463668
34 8 33 47.979619513047
35
36 8 20 56.91667227783
37 4 13 38.84223430771
38 14 28 50.138758039035
39 18 39 54.512682991164
40 7 14 38.430439846568

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:26084.xml
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