This sample belongs to: Nicolas Villamizar Escalante

Sample Details
Sample Name: 15SACZ-02A
IGSN: IE232000J
Laboratory: Grenoble Alpes
Analyst: Villamizar-Escalante Nicolas
Mineral: Apatite
Dosimeter Glass: IRMM540R
Dosimeter Glass U ppm: 15
Irradiation: 5-2016
Count Date:
Locality: Colombia
Rock Type: Metamorphic rock
Rock Age: 480
Acquisition system: Olympus BX51
Magnification: 1250x
Radiation Facility: FRM II Munich
Total Thermal Neutron Fluence: 8 ×10^15 n/cm2
Position in Irradiation Canister (#): 4
Area of Graticule Square: 6.39E-07
No. of Crystals Counted: 18
Zeta Factor: 249,55
Zeta Factor Error (1s): 12.52
Rho d: 9.99E+05
Rho d (% Relative Error): 1.33
N d: 4148
Geometry factor (for EDM and Zeta ICPMS methods): 0.5
Etchant: 5.5 molar HNO3
Etching Conditions: 21°C
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: 15SACZ-02A
Sample Description: quartz feldspar gneiss
GeoObject Type: Individual Sample
Geoobject Classification: Gneiss
Collection Method:
Material: Rock
Latitude: 6.9336176
Longitude: -72.99184
Sample Comment:
Collector:
Material Classification: Gneiss
Primary Location Name:
Primary Location Type:
Location Description:
Locality:
Locality Description:
Country: Colombia
Provice:
County: Colombia
City Or Township:
Platform:
Platform ID:
Original Archival Institution:
Original Archival Contact:
Most Recent Archival Institution:
Most Recent Archival Contact:

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 18 89.6 6 2.2 2.2 0.5

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 3 126 4,69E+04 1,97E+06 100 30 5 3.1 0.6
2 1 31 3,91E+04 1,21E+06 40 18.00 7.00 4.60 0.10
3 0 15 0,00E+00 5,87E+05 40 9.00 4.00 5.90 0.20
4 1 17 1,56E+04 2,66E+05 100 4.00 2.00 8.30 0.20
5 4 75 6,26E+04 1,17E+06 100 18.00 4.00 6.90 1.80
6 1 13.00 9,78E+04 1,27E+06 16.00 19.00 10.00 10.90 0.20
7 1 16 7,82E+04 1,25E+06 20 19.00 9.00 8.80 0.20
8 1 22 6,26E+04 1,38E+06 25 21.00 9.00 6.40 0.10
9 1 39 3,13E+04 1,22E+06 50 18.00 6.00 3.60 0.10
10 4 38 6,26E+04 5,95E+05 100 9.00 3.00 13.60 3.40
11 1 37 6,26E+04 2,32E+06 25 35.00 11.00 3.80 0.10
12 3 37 1,56E+05 1,93E+06 30 29.00 9.00 10.60 2.00
13 3 102 4,69E+04 1,60E+06 100 24.00 5.00 3.90 0.70
14 3 30 1,56E+05 1,56E+06 30 23.00 9.00 13.00 2.40
15 2 24 9,78E+04 1,17E+06 32 18.00 7.00 11.10 1.20
16 1 11 1,74E+05 1,91E+06 9 29.00 17.00 12.80 0.30
17 2 45 1,12E+05 2,52E+06 28 38.00 11.00 6.00 0.70
18 2 26 1,25E+05 1,63E+06 25 24.00 10.00 10.30 1.10

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
1 16.34 65 1.55
2 14.1 53 1.68
3 14.99 86 1.6
4 15.39 61 1.73
5 15.45 73 1.8
6 15.67 64 1.41
7 15.23 56 1.3
8 14.27 47 1.57
9 15.6 86 1.42
10 14.05 85 1.29
11 13.59 90 1.86
12 16.3 60 1.58
13 14.91 90 1.6
14 16.37 53 1.48
15 15.38 87 1.73
16 15.64 53 1.69
17 15.62 81 1.61
18 15.23 76 1.53
19 15.75 70 1.68
20 15.41 39 1.88
21 13.52 61 1.65
22 15.77 59 1.59
23 14.82 65 1.65
24 12.19 90 1.88
25 11.93 75 1.82
filename:26454.xml
NSF logo Funded by the US National Science Foundation (NSF)