This sample belongs to: Nicolas Villamizar Escalante
Sample Name: 15SACZ-15A
IGSN: IE232000E
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: Metasedimentary
Rock Age: 180
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 (#): 20
Area of Graticule Square: 8,30E-07
No. of Crystals Counted: 5
Zeta Factor: 139,15
Zeta Factor Error (1s): 4.29
Rho d: 2,42E+05
Rho d (% Relative Error): 1.16
N d: 4013
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-15A
Sample Description: quartz muscovite metasandstone
GeoObject Type: Individual Sample
Geoobject Classification: Metasedimentary
Collection Method:
Material: Rock
Latitude: 6.97662
Longitude: -72.8249
Sample Comment:
Collector:
Material Classification: Metasedimentary
Primary Location Name:
Primary Location Type:
Location Description:
Locality:
Locality Description:
Country: Colombia
Provice:
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 |
|
|
|
|
|
5 |
50.7 |
|
|
|
191.8 |
92.5 |
92.5 |
0.5 |
|
|
|
|
|
|
|
| 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 |
39 |
3 |
|
|
|
|
1,17E+07 |
9,04E+05 |
|
4 |
|
|
|
187 |
200 |
205.1 |
69.1 |
|
|
|
|
|
|
|
|
|
|
|
|
| 2 |
38 |
5 |
|
|
|
|
6,54E+06 |
8,61E+05 |
|
7 |
|
|
|
178 |
152 |
123.1 |
50 |
|
|
|
|
|
|
|
|
|
|
|
|
| 3 |
37 |
2 |
|
|
|
|
1,49E+07 |
8,03E+05 |
|
3 |
|
|
|
166 |
210 |
283.4 |
79.7 |
|
|
|
|
|
|
|
|
|
|
|
|
| 4 |
50 |
2 |
|
|
|
|
1,51E+07 |
6,02E+05 |
|
4 |
|
|
|
125 |
158 |
379.7 |
109.4 |
|
|
|
|
|
|
|
|
|
|
|
|
| 5 |
56 |
7 |
|
|
|
|
2,25E+07 |
2,81E+06 |
|
3 |
|
|
|
582 |
425 |
130.5 |
60.8 |
|
|
|
|
|
|
|
|
|
|
|
|
| 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:26439.xml
