This sample belongs to: Mélanie Noury

Sample Details
Sample Name: SM15-18_aft
IGSN: IEMNX0003
Laboratory: ISTerre fission-track lab (Geo-Thermochronology Platform, Univ. Grenoble Alpes)
Analyst: Mélanie Noury
Mineral: apatite
Dosimeter Glass: IRMM540R
Dosimeter Glass U ppm: 15
Irradiation: ISTerre-1-2017
Count Date:
Locality: Saint-Martin island
Rock Type: granodiorite
Rock Age: Oligocene
Acquisition system: Olympus BX51
Magnification: 1250x
Radiation Facility: FRM II reactor, Garching, Germany
Total Thermal Neutron Fluence: 4.5x10^15 n/cm^2
Position in Irradiation Canister (#): 22
Area of Graticule Square: 6.39E-7
No. of Crystals Counted: 17
Zeta Factor: 277.3
Zeta Factor Error (1s): 15.9
Rho d: 1245600
Rho d (% Relative Error): 1.24
N d: 8404
Geometry factor (for EDM and Zeta ICPMS methods): 0.5
Etchant: 5.5 mol HNO3
Etching Conditions: 21°C, 20s
Method - U: EDM
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: Zeta was determined using FCT and Durango age standards
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: SM15-18
Sample Description:
GeoObject Type: Individual Sample
Geoobject Classification:
Collection Method: rock hammer
Material: Rock
Latitude: 18.10722
Longitude: -63.045
Sample Comment:
Collector:
Material Classification:
Primary Location Name: St. Martin island
Primary Location Type: island
Location Description: East of First Stick Hill
Locality: Grand Case
Locality Description:
Country: France
Provice: Saint-Martin
County:
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 central 35.2 7.2 7.2 78 38.0 3.1 3.1 35.3 6 6 0

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 9 32 40 1.98 352113 1251956 0.28125 2.556E-5 15.08 5.30 48.4 18.5 18.5
2 7 37 42 2.16 260824 1378642 0.18919 2.6838E-5 16.60 5.44 32.6 13.6 13.6
3 13 98 80 1.98 254304 1917058 0.13265 5.112E-5 23.09 4.69 22.9 6.9 6.9
4 10 50 100 2.15 156495 782473 0.20000 6.39E-5 9.42 2.66 34.4 12.1 12.1
5 9 61 50 2.53 281690 1909233 0.14754 3.195E-5 22.99 5.89 25.4 9.2 9.2
6 13 67 100 2.11 203443 1048513 0.19403 6.39E-5 12.63 3.09 33.4 10.3 10.3
7 13 61 70 2.93 290633 1363738 0.21311 4.473E-5 16.42 4.21 36.7 11.4 11.4
8 19 96 60 3.14 495566 2503912 0.19792 3.834E-5 30.15 6.18 34.1 8.8 8.8
9 8 39 42 2.80 298085 1453163 0.20513 2.6838E-5 17.50 5.59 35.3 13.9 13.9
10 7 29 49 2.35 223564 926192 0.24138 3.1311E-5 11.15 4.12 41.6 17.7 17.7
11 13 48 42 2.70 484388 1788509 0.27083 2.6838E-5 21.54 6.21 46.6 14.8 14.8
12 6 14 100 2.14 93897 219092 0.42857 6.39E-5 2.64 1.39 73.6 36.2 36.2
13 18 72 100 2.44 281690 1126761 0.25000 6.39E-5 13.57 3.20 43.0 11.6 11.6
14 2 19 60 2.15 52165 495566 0.10526 3.834E-5 5.97 2.71 18.2 13.5 13.5
15 11 37 100 2.66 172144 579030 0.29730 6.39E-5 6.97 2.28 51.1 17.8 17.8
16 6 22 100 2.61 93897 344288 0.27273 6.39E-5 4.15 1.75 46.9 21.8 21.8
17 6 47 30 2.59 312989 2451748 0.12766 1.917E-5 29.52 8.60 22.0 9.6 9.6

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:22678.xml
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