This sample belongs to: Brandon Keough

Sample Unique Identifier = IECAR000F (Detail)
Aliquot Unique Identifier = 10.58052/IECAR000F (Detail)
Aliquot Name = zircon
Analysis Purpose = NONE
Laboratory Name = RIGL
Analyst Name = MassSpec
Aliquot Reference = NONE
Aliquot Instrumental Method = ID-TIMS
Aliquot Instrumental Method Reference = NONE
Calibration Uncertainty 206/238 = 0.0000
Calibration Uncertainty 208/232 = 0.0000
CalibrationUncertainty 207/206 = 0.0000
Aliquot Comment = NONE

Sample Metadata
Stratigraphic Formation Name = NONE
Stratigraphic Geologic Age (Ma) = NONE ( 0 Ma - 0 Ma )
Stratigraphic Minimum Absolute Age (Ma) = 0.0
Stratigraphic Maximum Absolute Age (Ma) = 0.0
Detrital Type = NONE
Keywords:



Sample Date Models
Sample Date Model Name: weighted mean 206Pb/238U (Th-corrected)
Value: 228920108.1482555866241455078125
Uncertainty Type: ABS
One Sigma: 90205.938169526125420816242694854736328125
Mean Squared Weighted Deviation: 0.325052067853837833855124017645721323788166046142578125
Internal Two Sigma Uncertainty: 180411.87633905225084163248538970947265625
PlusInternal Two Sigma Uncertainty:
Minus Internal Two Sigma Uncertainty:
Internal Two Sigma Uncertainty with Tracer Calibration Uncertainty: 206747.78783800351084209978580474853515625
Plus Internal Two Sigma Uncertainty with Tracer Calibration Uncertainty:
Minus Internal Two Sigma Uncertainty with Tracer Calibration Uncertainty:
Internal Two Sigma Uncertainty with Tracer Calibration and Decay Constant Uncertainty: 320482.7366260671406053006649017333984375
Plus Internal Two Sigma Uncertainty with Tracer Calibration and Decay Constant Uncertainty:
Minus Internal Two Sigma Uncertainty with Tracer Calibration and Decay Constant Uncertainty:

Included Fractions Vector:
z01
z02
z03

Explanation: Explanation
Comment: Comment
Preferred: true


Alph Pb Models:
Name Value Uncertainty Type One Sigma
PbD250419 0.00144 ABS 0.00025


Analysis Fractions
Sample Name = SH24-101
Legacy = false
Fraction ID = z01
Grain ID = z01
Zircon = true
Time Stamp = March 31, 2026 3:17 PM
Mineral Name = zircon
Setting Type = other
Number of Grains = 1
Estimated Date = 0.0
Stacey Kramers One Percent Uncertainty = 1.0000
Stacey Kramers Correlation Coefficients = 0.5000
Physically Abraded = false
Leached in HF Acid = false
Annealed and Chemically Abraded = false
Chemically Purified UPb = false
Analysis Fraction Comment = NONE
Pb Blank ID = 20250504_RIGL v.1.0
TracerID = ET535 v.3.0
Fractionation Corrected Pb = false
Alpha Pb Model ID = PbD250419
Fractionation Corrected U = false
Alpha U Model ID = #NONE#

Pb Collector Type = NONE
U Collector Type = NONE

Analysis Measures
Name Value Uncertainty Type One Sigma
alphaPb 0.00144 ABS 0.00025
alphaU 0.00085 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.002 ABS 0.00002
r18O_16O_revised 0.00206 ABS 0.00002
r238_235b 137.8185 ABS 0.0223
r238_235s 137.8185 ABS 0.0223
r265_267m 0.99016 PCT 0.00228
r270_265m 0.35438 PCT 0.00453
r270_267m 0.3509 PCT 0.00402
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0045 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00095 PCT 0.38126
r206_204m 1,361.21274 PCT 0.38518
r206_205m 1.28552 PCT 0.01984
r206_207m 16.51366 PCT 0.05132
r206_208m 7.081 PCT 0.03194
r207_204m 82.42848 PCT 0.37496
r207_205m 0.07785 PCT 0.04682
r208_204m 192.23553 PCT 0.38641
r208_205m 0.18155 PCT 0.03094
r233_235m 0.9941 PCT 0.00228
r238_233m 0.35438 PCT 0.00453
r238_235m 0.35229 PCT 0.00402

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03613 ABS 0.00002
r206_238r_Th 0.03615 ABS 0.00002
r207_206r 0.05062 ABS 0.00012
r207_206r_Pa 0.05062 ABS 0.00012
r207_206r_Th 0.05059 ABS 0.00012
r207_206r_ThPa 0.05059 ABS 0.00012
r207_235r 0.25205 ABS 0.00067
r207_235r_Pa 0.25204 ABS 0.00067
r208_206r 0.11715 ABS 0.0
rhoR206_238r__r207_235r 0.53763 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.53762 ABS 0.0
rhoR206_238r_Th__r207_235r 0.53735 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.53734 ABS 0.0
rhoR207_206r__r238_206r -0.40806 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.40805 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.4078 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.40779 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 228.81 Ma ABS 0.097 Ma
age206_238r_Th 228.904 Ma ABS 0.097 Ma
age207_206r 222.354 Ma ABS 5.688 Ma
age207_206r_Pa 222.311 Ma ABS 5.689 Ma
age207_206r_Th 221.386 Ma ABS 5.69 Ma
age207_206r_ThPa 221.343 Ma ABS 5.69 Ma
age207_235r 228.238 Ma ABS 0.545 Ma
age207_235r_Pa 228.234 Ma ABS 0.545 Ma
bestAge 228.81 Ma ABS 0.097 Ma
percentDiscordance -2.90341

Compositional Measures
Name Value Uncertainty Type One Sigma
concPb206_ib 0.0 ABS 0.0
concPb206_r 0.0 ABS 0.0
concPb206_rib 0.0 ABS 0.0
concPb_ib 0.0 ABS 0.0
concPb_r 0.0 ABS 0.0
concPb_rib 0.0 ABS 0.0
concU 0.0 ABS 0.0
massPb_rib 0.0 ABS 0.0
massU 0.0 ABS 0.0
radToCommonTotal 23.49846 ABS 0.0
rTh_Usample 0.37002 ABS 0.0
totCommonPbMass 0.0 ABS 0.0
totRadiogenicPbMass 0.0 ABS 0.0

Sample Isochron Ratios
Name Value Uncertainty Type One Sigma
r206_204tfc 1,507.51483 ABS 0.0
r207_206s 0.05062 ABS 0.0
r235_207s 3.96751 ABS 0.0
r238_206s 27.67666 ABS 0.0
r238_207s 546.79565 ABS 0.0


Sample Name = SH24-101
Legacy = false
Fraction ID = z02
Grain ID = z02
Zircon = true
Time Stamp = March 31, 2026 3:17 PM
Mineral Name = zircon
Setting Type = other
Number of Grains = 1
Estimated Date = 0.0
Stacey Kramers One Percent Uncertainty = 1.0000
Stacey Kramers Correlation Coefficients = 0.5000
Physically Abraded = false
Leached in HF Acid = false
Annealed and Chemically Abraded = false
Chemically Purified UPb = false
Analysis Fraction Comment = NONE
Pb Blank ID = 20250504_RIGL v.1.0
TracerID = ET535 v.3.0
Fractionation Corrected Pb = false
Alpha Pb Model ID = PbD250419
Fractionation Corrected U = false
Alpha U Model ID = #NONE#

Pb Collector Type = NONE
U Collector Type = NONE

Analysis Measures
Name Value Uncertainty Type One Sigma
alphaPb 0.00144 ABS 0.00025
alphaU 0.0008 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.002 ABS 0.00002
r18O_16O_revised 0.00206 ABS 0.00002
r238_235b 137.8185 ABS 0.0223
r238_235s 137.8185 ABS 0.0223
r265_267m 0.99246 PCT 0.00246
r270_265m 0.0194 PCT 0.01516
r270_267m 0.01925 PCT 0.01516
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0051 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00121 PCT 0.29992
r206_204m 66.19943 PCT 0.30489
r206_205m 0.08024 PCT 0.04217
r206_207m 3.86722 PCT 0.08077
r206_208m 1.62671 PCT 0.05183
r207_204m 17.11819 PCT 0.2974
r207_205m 0.02075 PCT 0.0957
r208_204m 40.69551 PCT 0.30423
r208_205m 0.04933 PCT 0.06044
r233_235m 0.99642 PCT 0.00246
r238_233m 0.0194 PCT 0.01516
r238_235m 0.01933 PCT 0.01516

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03631 ABS 0.00024
r206_238r_Th 0.03632 ABS 0.00024
r207_206r 0.0486 ABS 0.00335
r207_206r_Pa 0.0486 ABS 0.00335
r207_206r_Th 0.04858 ABS 0.00335
r207_206r_ThPa 0.04858 ABS 0.00335
r207_235r 0.2432 ABS 0.0178
r207_235r_Pa 0.2432 ABS 0.0178
r208_206r 0.09972 ABS 0.0
rhoR206_238r__r207_235r 0.66189 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.66189 ABS 0.0
rhoR206_238r_Th__r207_235r 0.66162 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.66162 ABS 0.0
rhoR207_206r__r238_206r -0.60551 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.60551 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.60527 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.60527 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 229.912 Ma ABS 1.514 Ma
age206_238r_Th 230.008 Ma ABS 1.513 Ma
age207_206r 127.615 Ma ABS 162.249 Ma
age207_206r_Pa 127.57 Ma ABS 162.254 Ma
age207_206r_Th 126.617 Ma ABS 162.291 Ma
age207_206r_ThPa 126.572 Ma ABS 162.296 Ma
age207_235r 221.041 Ma ABS 14.539 Ma
age207_235r_Pa 221.037 Ma ABS 14.539 Ma
bestAge 229.912 Ma ABS 1.514 Ma
percentDiscordance -80.16067

Compositional Measures
Name Value Uncertainty Type One Sigma
concPb206_ib 0.0 ABS 0.0
concPb206_r 0.0 ABS 0.0
concPb206_rib 0.0 ABS 0.0
concPb_ib 0.0 ABS 0.0
concPb_r 0.0 ABS 0.0
concPb_rib 0.0 ABS 0.0
concU 0.0 ABS 0.0
massPb_rib 0.0 ABS 0.0
massU 0.0 ABS 0.0
radToCommonTotal 0.81825 ABS 0.0
rTh_Usample 0.31498 ABS 0.0
totCommonPbMass 0.0 ABS 0.0
totRadiogenicPbMass 0.0 ABS 0.0

Sample Isochron Ratios
Name Value Uncertainty Type One Sigma
r206_204tfc 71.35068 ABS 0.0
r207_206s 0.0486 ABS 0.0
r235_207s 4.11177 ABS 0.0
r238_206s 27.54159 ABS 0.0
r238_207s 566.67852 ABS 0.0


Sample Name = SH24-101
Legacy = false
Fraction ID = z03
Grain ID = z03
Zircon = true
Time Stamp = March 31, 2026 3:17 PM
Mineral Name = zircon
Setting Type = other
Number of Grains = 1
Estimated Date = 0.0
Stacey Kramers One Percent Uncertainty = 1.0000
Stacey Kramers Correlation Coefficients = 0.5000
Physically Abraded = false
Leached in HF Acid = false
Annealed and Chemically Abraded = false
Chemically Purified UPb = false
Analysis Fraction Comment = NONE
Pb Blank ID = 20250504_RIGL v.1.0
TracerID = ET535 v.3.0
Fractionation Corrected Pb = false
Alpha Pb Model ID = PbD250419
Fractionation Corrected U = false
Alpha U Model ID = #NONE#

Pb Collector Type = NONE
U Collector Type = NONE

Analysis Measures
Name Value Uncertainty Type One Sigma
alphaPb 0.00144 ABS 0.00025
alphaU 0.00077 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.002 ABS 0.00002
r18O_16O_revised 0.00206 ABS 0.00002
r238_235b 137.8185 ABS 0.0223
r238_235s 137.8185 ABS 0.0223
r265_267m 0.99228 PCT 0.00264
r270_265m 0.03752 PCT 0.0139
r270_267m 0.03723 PCT 0.01346
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.011 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00045 PCT 0.30808
r206_204m 293.00779 PCT 0.30413
r206_205m 0.13138 PCT 0.02101
r206_207m 10.6987 PCT 0.09549
r206_208m 4.94177 PCT 0.07709
r207_204m 27.38831 PCT 0.31421
r207_205m 0.01228 PCT 0.09255
r208_204m 59.29544 PCT 0.32951
r208_205m 0.02659 PCT 0.07222
r233_235m 0.99624 PCT 0.00264
r238_233m 0.03752 PCT 0.0139
r238_235m 0.03738 PCT 0.01346

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03615 ABS 0.00004
r206_238r_Th 0.03616 ABS 0.00004
r207_206r 0.05128 ABS 0.00052
r207_206r_Pa 0.05128 ABS 0.00052
r207_206r_Th 0.05126 ABS 0.00052
r207_206r_ThPa 0.05126 ABS 0.00052
r207_235r 0.25548 ABS 0.00277
r207_235r_Pa 0.25548 ABS 0.00277
r208_206r 0.09842 ABS 0.0
rhoR206_238r__r207_235r 0.61272 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.61272 ABS 0.0
rhoR206_238r_Th__r207_235r 0.61244 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.61243 ABS 0.0
rhoR207_206r__r238_206r -0.5414 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.5414 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.54113 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.54113 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 228.906 Ma ABS 0.253 Ma
age206_238r_Th 229.002 Ma ABS 0.253 Ma
age207_206r 252.573 Ma ABS 23.419 Ma
age207_206r_Pa 252.531 Ma ABS 23.42 Ma
age207_206r_Th 251.592 Ma ABS 23.425 Ma
age207_206r_ThPa 251.55 Ma ABS 23.426 Ma
age207_235r 231.019 Ma ABS 2.238 Ma
age207_235r_Pa 231.015 Ma ABS 2.238 Ma
bestAge 228.906 Ma ABS 0.253 Ma
percentDiscordance 9.37024

Compositional Measures
Name Value Uncertainty Type One Sigma
concPb206_ib 0.0 ABS 0.0
concPb206_r 0.0 ABS 0.0
concPb206_rib 0.0 ABS 0.0
concPb_ib 0.0 ABS 0.0
concPb_r 0.0 ABS 0.0
concPb_rib 0.0 ABS 0.0
concU 0.0 ABS 0.0
massPb_rib 0.0 ABS 0.0
massU 0.0 ABS 0.0
radToCommonTotal 5.40425 ABS 0.0
rTh_Usample 0.31085 ABS 0.0
totCommonPbMass 0.0 ABS 0.0
totRadiogenicPbMass 0.0 ABS 0.0

Sample Isochron Ratios
Name Value Uncertainty Type One Sigma
r206_204tfc 366.46858 ABS 0.0
r207_206s 0.05128 ABS 0.0
r235_207s 3.91418 ABS 0.0
r238_206s 27.6648 ABS 0.0
r238_207s 539.44694 ABS 0.0




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