This sample belongs to: Laura Cristina Calderón Díaz
Sample Name: M6
IGSN: 10.58052/IELCD002G
Laboratory: Thermochronology laboratory and research center (CPGeo_LTC) at the University of Sao Paulo, Brazil (USP)
Analyst: Laura Calderon
Mineral: Zircon
Dosimeter Glass: CN1
Dosimeter Glass U ppm: 39.8
Irradiation: USP36
Count Date: 03/06/2022
Locality:
Rock Type:
Rock Age:
Acquisition system:
Magnification:
Radiation Facility:
Total Thermal Neutron Fluence:
Position in Irradiation Canister (#):
Area of Graticule Square: 2.5E-7
No. of Crystals Counted: 20
Zeta Factor: 161.1
Zeta Factor Error (1s): 4.4
Rho d: 138379.130223518
Rho d (% Relative Error):
N d: 9354
Geometry factor (for EDM and Zeta ICPMS methods):
Etchant:
Etching Conditions:
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:
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: M6
Sample Description:
GeoObject Type: Individual Sample
Geoobject Classification:
Collection Method: Manual
Material: Rock
Latitude: 2.6742
Longitude: -75.9779
Sample Comment:
Collector: Sebastian Zapata
Material Classification:
Primary Location Name:
Primary Location Type:
Location Description:
Locality: La Plata
Locality Description:
Country:
Provice:
County:
City Or Township:
Platform:
Platform ID:
Original Archival Institution:
Original Archival Contact:
Most Recent Archival Institution: Universidad Nacional de Colombia
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 |
| SingleAge |
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| 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 |
| Grain1 |
142 |
13 |
36 |
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| Grain2 |
49 |
5 |
20 |
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| Grain3 |
91 |
16 |
24 |
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| Grain4 |
102 |
12 |
35 |
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| Grain5 |
125 |
15 |
35 |
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| Grain6 |
69 |
4 |
20 |
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| Grain7 |
73 |
6 |
30 |
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| Grain8 |
93 |
12 |
30 |
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| Grain9 |
124 |
22 |
35 |
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| Grain10 |
91 |
22 |
48 |
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| Grain11 |
95 |
15 |
30 |
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| Grain12 |
99 |
16 |
25 |
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| Grain13 |
191 |
34 |
50 |
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| Grain14 |
45 |
8 |
20 |
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| Grain15 |
167 |
28 |
50 |
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| Grain16 |
144 |
23 |
60 |
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| Grain17 |
124 |
23 |
30 |
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| Grain18 |
114 |
17 |
50 |
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| Grain19 |
104 |
15 |
30 |
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| Grain20 |
143 |
19 |
40 |
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| 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:27350.xml
