This sample belongs to: Nicolas Villamizar Escalante
Sample Name: 15SACZ-02A
IGSN: IE2320002
Laboratory: Grenoble Alpes
Analyst: Villamizar-Escalante Nicolas
Mineral: Zircon
Dosimeter Glass: IRMM 541
Dosimeter Glass U ppm: 50
Irradiation: 1-2016
Count Date:
Locality: Colombia
Rock Type: Gneiss
Rock Age: 460
Acquisition system: Olympus BH-2 microscope
Magnification: 1250x
Radiation Facility: FRM II Munich
Total Thermal Neutron Fluence: 0.5 ×10^15 n/cm2
Position in Irradiation Canister (#): 8
Area of Graticule Square: 8.30E-07
No. of Crystals Counted: 14
Zeta Factor: 139.15
Zeta Factor Error (1s): 4.29
Rho d: 2.33E+05
Rho d (% Relative Error): 1.41
N d: 3870
Geometry factor (for EDM and Zeta ICPMS methods): 0.5
Etchant: NaOH-KOH
Etching Conditions: 228°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 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:
| 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 |
|
|
|
|
|
14 |
3.1 |
|
|
|
25.9 |
4.2 |
4.2 |
17.6 |
|
|
|
|
|
|
|
| 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 |
51 |
36 |
|
|
|
|
7,68E+06 |
5,42E+06 |
|
8 |
|
|
|
1163 |
387 |
22.9 |
14.7 |
|
|
|
|
|
|
|
|
|
|
|
|
| 2 |
71 |
44 |
|
|
|
|
9,50E+06 |
5,89E+06 |
|
9 |
|
|
|
1264 |
381 |
26.1 |
17.7 |
|
|
|
|
|
|
|
|
|
|
|
|
| 3 |
76 |
81 |
|
|
|
|
4,58E+06 |
4,88E+06 |
|
20 |
|
|
|
1047 |
234 |
15.2 |
11 |
|
|
|
|
|
|
|
|
|
|
|
|
| 4 |
69 |
40 |
|
|
|
|
4,16E+06 |
2,41E+06 |
|
20 |
|
|
|
517 |
163 |
27.9 |
18.6 |
|
|
|
|
|
|
|
|
|
|
|
|
| 5 |
35 |
18 |
|
|
|
|
8,43E+06 |
4,34E+06 |
|
5 |
|
|
|
931 |
434 |
31.3 |
17.3 |
|
|
|
|
|
|
|
|
|
|
|
|
| 6 |
49 |
32 |
|
|
|
|
5,90E+06 |
3,86E+06 |
|
10 |
|
|
|
827 |
291 |
24.7 |
15.5 |
|
|
|
|
|
|
|
|
|
|
|
|
| 7 |
52 |
20 |
|
|
|
|
4,18E+06 |
1,61E+06 |
|
15 |
|
|
|
345 |
153 |
41.8 |
24.7 |
|
|
|
|
|
|
|
|
|
|
|
|
| 8 |
38 |
30 |
|
|
|
|
4,58E+06 |
3,61E+06 |
|
10 |
|
|
|
776 |
282 |
20.5 |
12.4 |
|
|
|
|
|
|
|
|
|
|
|
|
| 9 |
42 |
26 |
|
|
|
|
5,06E+06 |
3,13E+06 |
|
10 |
|
|
|
672 |
262 |
26.1 |
15.7 |
|
|
|
|
|
|
|
|
|
|
|
|
| 10 |
200 |
107 |
|
|
|
|
6,02E+06 |
3,22E+06 |
|
40 |
|
|
|
692 |
135 |
30.1 |
23.6 |
|
|
|
|
|
|
|
|
|
|
|
|
| 11 |
57 |
38 |
|
|
|
|
8,58E+06 |
5,72E+06 |
|
8 |
|
|
|
1228 |
397 |
24.2 |
15.8 |
|
|
|
|
|
|
|
|
|
|
|
|
| 12 |
91 |
41 |
|
|
|
|
7,31E+06 |
3,29E+06 |
|
15 |
|
|
|
707 |
220 |
35.8 |
24.6 |
|
|
|
|
|
|
|
|
|
|
|
|
| 13 |
24 |
22 |
|
|
|
|
3,61E+06 |
3,31E+06 |
|
8 |
|
|
|
711 |
300 |
17.7 |
9.5 |
|
|
|
|
|
|
|
|
|
|
|
|
| 14 |
40 |
20 |
|
|
|
|
9,64E+06 |
4,82E+06 |
|
5 |
|
|
|
1034 |
458 |
32.2 |
18.5 |
|
|
|
|
|
|
|
|
|
|
|
|
| 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:26413.xml
