This sample belongs to: Mélanie Noury
Sample Name: SM15-09_zft
IGSN: IEMNX0002
Laboratory: ISTerre fission-track lab (Geo-Thermochronology Platform, Univ. Grenoble Alpes)
Analyst: Mélanie Noury
Mineral: zircon
Dosimeter Glass: IRMM541
Dosimeter Glass U ppm: 50
Irradiation: ISTerre-3-2017
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: 0.5x10^15 n/cm^2
Position in Irradiation Canister (#): 13
Area of Graticule Square: 6.39E-7
No. of Crystals Counted: 19
Zeta Factor: 125.5
Zeta Factor Error (1s): 6.2
Rho d: 361240
Rho d (% Relative Error): 1.92
N d: 7192
Geometry factor (for EDM and Zeta ICPMS methods): 0.5
Etchant: eutectic NaOH-KOH melt
Etching Conditions: 228°C
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 ID: SM15-09
Sample Description:
GeoObject Type: Individual Sample
Geoobject Classification:
Collection Method: rock hammer
Material: Rock
Latitude: 18.11083
Longitude: -63.05278
Sample Comment:
Collector:
Material Classification:
Primary Location Name: St. Martin island
Primary Location Type: island
Location Description: North of Grand Case
Locality:
Locality Description:
Country: France
Provice: St. Martin
County:
City Or Township:
Platform:
Platform ID:
Original Archival Institution:
Original Archival Contact:
Most Recent Archival Institution:
Most Recent Archival Contact:
| 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 |
31.5 |
5.1 |
5.1 |
|
|
3 |
34.2 |
6.8 |
6.8 |
31.2 |
5.0 |
5.0 |
20 |
|
|
|
|
|
|
|
| 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 |
22 |
9 |
49 |
|
|
|
702628 |
287439 |
2.44444 |
3.1311E-5 |
|
|
|
11.9 |
7.8 |
55.2 |
22.0 |
22.0 |
|
|
|
|
|
|
|
|
|
|
|
| 2 |
17 |
8 |
40 |
|
|
|
665102 |
312989 |
2.12500 |
2.556E-5 |
|
|
|
13.0 |
8.9 |
48.0 |
20.7 |
20.7 |
|
|
|
|
|
|
|
|
|
|
|
| 3 |
41 |
15 |
40 |
|
|
|
1604069 |
586854 |
2.73333 |
2.556E-5 |
|
|
|
24.4 |
12.4 |
61.7 |
18.9 |
18.9 |
|
|
|
|
|
|
|
|
|
|
|
| 4 |
62 |
45 |
100 |
|
|
|
970266 |
704225 |
1.37778 |
6.39E-5 |
|
|
|
29.2 |
8.7 |
31.2 |
6.3 |
6.3 |
|
|
|
|
|
|
|
|
|
|
|
| 5 |
57 |
40 |
100 |
|
|
|
892019 |
625978 |
1.42500 |
6.39E-5 |
|
|
|
26.0 |
8.2 |
32.2 |
6.8 |
6.8 |
|
|
|
|
|
|
|
|
|
|
|
| 6 |
21 |
9 |
30 |
|
|
|
1095462 |
469484 |
2.33333 |
1.917E-5 |
|
|
|
19.5 |
12.7 |
52.7 |
21.2 |
21.2 |
|
|
|
|
|
|
|
|
|
|
|
| 7 |
28 |
27 |
80 |
|
|
|
547731 |
528169 |
1.03704 |
5.112E-5 |
|
|
|
21.9 |
8.4 |
23.5 |
6.4 |
6.4 |
|
|
|
|
|
|
|
|
|
|
|
| 8 |
12 |
5 |
24 |
|
|
|
782473 |
326030 |
2.40000 |
1.5336E-5 |
|
|
|
13.5 |
11.6 |
54.2 |
29.0 |
29.0 |
|
|
|
|
|
|
|
|
|
|
|
| 9 |
7 |
8 |
24 |
|
|
|
456442 |
521648 |
0.87500 |
1.5336E-5 |
|
|
|
21.7 |
14.9 |
19.8 |
10.3 |
10.3 |
|
|
|
|
|
|
|
|
|
|
|
| 10 |
12 |
23 |
30 |
|
|
|
625978 |
1199791 |
0.52174 |
1.917E-5 |
|
|
|
49.8 |
20.6 |
11.8 |
4.3 |
4.3 |
|
|
|
|
|
|
|
|
|
|
|
| 11 |
30 |
31 |
70 |
|
|
|
670691 |
693047 |
0.96774 |
4.473E-5 |
|
|
|
28.8 |
10.3 |
21.9 |
5.7 |
5.7 |
|
|
|
|
|
|
|
|
|
|
|
| 12 |
10 |
13 |
20 |
|
|
|
782473 |
1017214 |
0.76923 |
1.278E-5 |
|
|
|
42.2 |
23.0 |
17.4 |
7.4 |
7.4 |
|
|
|
|
|
|
|
|
|
|
|
| 13 |
14 |
13 |
24 |
|
|
|
912885 |
847679 |
1.07692 |
1.5336E-5 |
|
|
|
35.2 |
19.2 |
24.4 |
9.5 |
9.5 |
|
|
|
|
|
|
|
|
|
|
|
| 14 |
14 |
17 |
40 |
|
|
|
547731 |
665102 |
0.82353 |
2.556E-5 |
|
|
|
27.6 |
13.2 |
18.6 |
6.8 |
6.8 |
|
|
|
|
|
|
|
|
|
|
|
| 15 |
34 |
17 |
30 |
|
|
|
1773605 |
886802 |
2.00000 |
1.917E-5 |
|
|
|
36.8 |
17.7 |
45.2 |
13.6 |
13.6 |
|
|
|
|
|
|
|
|
|
|
|
| 16 |
37 |
24 |
96 |
|
|
|
603156 |
391236 |
1.54167 |
6.1344E-5 |
|
|
|
16.2 |
6.6 |
34.9 |
9.3 |
9.3 |
|
|
|
|
|
|
|
|
|
|
|
| 17 |
46 |
37 |
100 |
|
|
|
719875 |
579030 |
1.24324 |
6.39E-5 |
|
|
|
24.0 |
7.9 |
28.1 |
6.4 |
6.4 |
|
|
|
|
|
|
|
|
|
|
|
| 18 |
23 |
15 |
64 |
|
|
|
562402 |
366784 |
1.53333 |
4.0896E-5 |
|
|
|
15.2 |
7.8 |
34.7 |
11.6 |
11.6 |
|
|
|
|
|
|
|
|
|
|
|
| 19 |
103 |
68 |
100 |
|
|
|
1611894 |
1064163 |
1.51471 |
6.39E-5 |
|
|
|
44.2 |
10.8 |
34.2 |
5.6 |
5.6 |
|
|
|
|
|
|
|
|
|
|
|
| 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:22526.xml
