This sample belongs to: Brandon Keough

Sample Unique Identifier = IECAR000J (Detail)
Aliquot Unique Identifier = 10.58052/IECAR000J (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: 206653422.1246179640293121337890625
Uncertainty Type: ABS
One Sigma: 34139.14430603422806598246097564697265625
Mean Squared Weighted Deviation: 1.9919099271343128076949824389885179698467254638671875
Internal Two Sigma Uncertainty: 68278.2886120684561319649219512939453125
PlusInternal Two Sigma Uncertainty:
Minus Internal Two Sigma Uncertainty:
Internal Two Sigma Uncertainty with Tracer Calibration Uncertainty: 112406.440670086230966262519359588623046875
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: 247979.5941348266205750405788421630859375
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
z04
z05
z06
z07
z11
z12

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 = AF25-079
Legacy = false
Fraction ID = z01
Grain ID = z01
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00079 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.00206 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 0.99096 PCT 0.00217
r270_265m 0.22691 PCT 0.00364
r270_267m 0.22486 PCT 0.00302
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0073 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00086 PCT 0.23083
r206_204m 866.53466 PCT 0.22865
r206_205m 0.74288 PCT 0.01336
r206_207m 15.17115 PCT 0.02985
r206_208m 11.13461 PCT 0.0212
r207_204m 57.11782 PCT 0.23286
r207_205m 0.04897 PCT 0.0313
r208_204m 77.82357 PCT 0.22776
r208_205m 0.06672 PCT 0.02039
r233_235m 0.99502 PCT 0.00217
r238_233m 0.22691 PCT 0.00364
r238_235m 0.22578 PCT 0.00302

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03255 ABS 0.00002
r206_238r_Th 0.03256 ABS 0.00002
r207_206r 0.05039 ABS 0.00019
r207_206r_Pa 0.05039 ABS 0.00019
r207_206r_Th 0.05037 ABS 0.00019
r207_206r_ThPa 0.05036 ABS 0.00019
r207_235r 0.22602 ABS 0.00089
r207_235r_Pa 0.22602 ABS 0.00089
r208_206r 0.05063 ABS 0.0
rhoR206_238r__r207_235r 0.59858 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.59857 ABS 0.0
rhoR206_238r_Th__r207_235r 0.59828 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.59827 ABS 0.0
rhoR207_206r__r238_206r -0.5125 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.51249 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.51223 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.51223 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.465 Ma ABS 0.097 Ma
age206_238r_Th 206.565 Ma ABS 0.097 Ma
age207_206r 212.005 Ma ABS 8.536 Ma
age207_206r_Pa 211.957 Ma ABS 8.537 Ma
age207_206r_Th 210.856 Ma ABS 8.539 Ma
age207_206r_ThPa 210.808 Ma ABS 8.539 Ma
age207_235r 206.912 Ma ABS 0.739 Ma
age207_235r_Pa 206.908 Ma ABS 0.739 Ma
bestAge 206.465 Ma ABS 0.097 Ma
percentDiscordance 2.61323

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 14.15324 ABS 0.0
rTh_Usample 0.15972 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 970.24034 ABS 0.0
r207_206s 0.05039 ABS 0.0
r235_207s 4.4243 ABS 0.0
r238_206s 30.72551 ABS 0.0
r238_207s 609.75018 ABS 0.0


Sample Name = AF25-079
Legacy = false
Fraction ID = z02
Grain ID = z02
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00206 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 0.99102 PCT 0.00335
r270_265m 0.2128 PCT 0.00925
r270_267m 0.21089 PCT 0.00871
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0068 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00165 PCT 0.30582
r206_204m 430.09419 PCT 0.30655
r206_205m 0.71124 PCT 0.01647
r206_207m 12.07651 PCT 0.06686
r206_208m 6.37972 PCT 0.05621
r207_204m 35.61435 PCT 0.30262
r207_205m 0.0589 PCT 0.06329
r208_204m 67.41547 PCT 0.29877
r208_205m 0.11149 PCT 0.05385
r233_235m 0.99508 PCT 0.00335
r238_233m 0.2128 PCT 0.00925
r238_235m 0.21175 PCT 0.00871

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03253 ABS 0.00003
r206_238r_Th 0.03254 ABS 0.00003
r207_206r 0.05006 ABS 0.00041
r207_206r_Pa 0.05006 ABS 0.00041
r207_206r_Th 0.05003 ABS 0.00041
r207_206r_ThPa 0.05003 ABS 0.00041
r207_235r 0.22438 ABS 0.00194
r207_235r_Pa 0.22438 ABS 0.00194
r208_206r 0.0753 ABS 0.0
rhoR206_238r__r207_235r 0.64716 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.64715 ABS 0.0
rhoR206_238r_Th__r207_235r 0.64686 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.64686 ABS 0.0
rhoR207_206r__r238_206r -0.58412 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.58412 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.58385 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.58385 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.336 Ma ABS 0.173 Ma
age206_238r_Th 206.434 Ma ABS 0.173 Ma
age207_206r 196.569 Ma ABS 18.863 Ma
age207_206r_Pa 196.521 Ma ABS 18.863 Ma
age207_206r_Th 195.443 Ma ABS 18.868 Ma
age207_206r_ThPa 195.395 Ma ABS 18.869 Ma
age207_235r 205.551 Ma ABS 1.608 Ma
age207_235r_Pa 205.548 Ma ABS 1.608 Ma
bestAge 206.336 Ma ABS 0.173 Ma
percentDiscordance -4.96827

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 6.64452 ABS 0.0
rTh_Usample 0.23755 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 455.62931 ABS 0.0
r207_206s 0.05006 ABS 0.0
r235_207s 4.45666 ABS 0.0
r238_206s 30.74505 ABS 0.0
r238_207s 614.20996 ABS 0.0


Sample Name = AF25-079
Legacy = false
Fraction ID = z03
Grain ID = z03
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00081 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.00206 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 0.9896 PCT 0.00382
r270_265m 0.42212 PCT 0.00609
r270_267m 0.41772 PCT 0.00463
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0077 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00084 PCT 0.29045
r206_204m 1,651.80436 PCT 0.29078
r206_205m 1.39338 PCT 0.01294
r206_207m 17.10116 PCT 0.02961
r206_208m 12.69083 PCT 0.02681
r207_204m 96.59129 PCT 0.29386
r207_205m 0.08148 PCT 0.03273
r208_204m 130.15754 PCT 0.29044
r208_205m 0.10979 PCT 0.03004
r233_235m 0.99365 PCT 0.00382
r238_233m 0.42212 PCT 0.00609
r238_235m 0.41943 PCT 0.00463

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03291 ABS 0.00001
r206_238r_Th 0.03293 ABS 0.00001
r207_206r 0.05037 ABS 0.0001
r207_206r_Pa 0.05037 ABS 0.0001
r207_206r_Th 0.05035 ABS 0.0001
r207_206r_ThPa 0.05035 ABS 0.0001
r207_235r 0.2285 ABS 0.0005
r207_235r_Pa 0.2285 ABS 0.0005
r208_206r 0.05844 ABS 0.0
rhoR206_238r__r207_235r 0.57328 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.57326 ABS 0.0
rhoR206_238r_Th__r207_235r 0.57304 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.57301 ABS 0.0
rhoR207_206r__r238_206r -0.44424 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.44422 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.44404 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.44402 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 208.757 Ma ABS 0.075 Ma
age206_238r_Th 208.857 Ma ABS 0.075 Ma
age207_206r 211.289 Ma ABS 4.6 Ma
age207_206r_Pa 211.242 Ma ABS 4.6 Ma
age207_206r_Th 210.161 Ma ABS 4.601 Ma
age207_206r_ThPa 210.113 Ma ABS 4.602 Ma
age207_235r 208.963 Ma ABS 0.41 Ma
age207_235r_Pa 208.959 Ma ABS 0.41 Ma
bestAge 208.757 Ma ABS 0.075 Ma
percentDiscordance 1.19838

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 27.47264 ABS 0.0
rTh_Usample 0.18437 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 1,852.70045 ABS 0.0
r207_206s 0.05037 ABS 0.0
r235_207s 4.37629 ABS 0.0
r238_206s 30.38274 ABS 0.0
r238_207s 603.13405 ABS 0.0


Sample Name = AF25-079
Legacy = false
Fraction ID = z04
Grain ID = z04
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00071 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.00206 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 0.98853 PCT 0.00514
r270_265m 0.54505 PCT 0.00719
r270_267m 0.5388 PCT 0.00589
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0085 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00082 PCT 0.35996
r206_204m 2,159.61485 PCT 0.36147
r206_205m 1.77903 PCT 0.01387
r206_207m 17.69178 PCT 0.04161
r206_208m 12.67291 PCT 0.03489
r207_204m 122.08453 PCT 0.36968
r207_205m 0.10056 PCT 0.03848
r208_204m 170.38979 PCT 0.36475
r208_205m 0.14041 PCT 0.03203
r233_235m 0.99258 PCT 0.00514
r238_233m 0.54505 PCT 0.00719
r238_235m 0.541 PCT 0.00589

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03259 ABS 0.00001
r206_238r_Th 0.0326 ABS 0.00001
r207_206r 0.05036 ABS 0.00008
r207_206r_Pa 0.05036 ABS 0.00008
r207_206r_Th 0.05034 ABS 0.00008
r207_206r_ThPa 0.05033 ABS 0.00008
r207_235r 0.22617 ABS 0.0004
r207_235r_Pa 0.22616 ABS 0.0004
r208_206r 0.06348 ABS 0.0
rhoR206_238r__r207_235r 0.52631 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.52627 ABS 0.0
rhoR206_238r_Th__r207_235r 0.52608 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.52605 ABS 0.0
rhoR207_206r__r238_206r -0.35935 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.35932 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.35918 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.35916 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.715 Ma ABS 0.073 Ma
age206_238r_Th 206.815 Ma ABS 0.073 Ma
age207_206r 210.605 Ma ABS 3.756 Ma
age207_206r_Pa 210.558 Ma ABS 3.757 Ma
age207_206r_Th 209.471 Ma ABS 3.757 Ma
age207_206r_ThPa 209.424 Ma ABS 3.758 Ma
age207_235r 207.029 Ma ABS 0.333 Ma
age207_235r_Pa 207.025 Ma ABS 0.333 Ma
bestAge 206.715 Ma ABS 0.073 Ma
percentDiscordance 1.84728

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 36.26838 ABS 0.0
rTh_Usample 0.20024 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 2,428.89074 ABS 0.0
r207_206s 0.05036 ABS 0.0
r235_207s 4.42152 ABS 0.0
r238_206s 30.68771 ABS 0.0
r238_207s 609.36787 ABS 0.0


Sample Name = AF25-079
Legacy = false
Fraction ID = z05
Grain ID = z05
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00082 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.00206 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 0.99171 PCT 0.0041
r270_265m 0.12959 PCT 0.00821
r270_267m 0.12852 PCT 0.00711
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0079 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00108 PCT 0.23869
r206_204m 397.85175 PCT 0.2353
r206_205m 0.43009 PCT 0.01128
r206_207m 11.85243 PCT 0.03591
r206_208m 7.3296 PCT 0.03635
r207_204m 33.56755 PCT 0.24094
r207_205m 0.03629 PCT 0.0367
r208_204m 54.27977 PCT 0.22773
r208_205m 0.05868 PCT 0.03646
r233_235m 0.99578 PCT 0.0041
r238_233m 0.12959 PCT 0.00821
r238_235m 0.12904 PCT 0.00711

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03252 ABS 0.00003
r206_238r_Th 0.03254 ABS 0.00003
r207_206r 0.04981 ABS 0.00042
r207_206r_Pa 0.04981 ABS 0.00042
r207_206r_Th 0.04978 ABS 0.00042
r207_206r_ThPa 0.04978 ABS 0.00042
r207_235r 0.22323 ABS 0.00201
r207_235r_Pa 0.22323 ABS 0.00201
r208_206r 0.04927 ABS 0.0
rhoR206_238r__r207_235r 0.65044 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.65044 ABS 0.0
rhoR206_238r_Th__r207_235r 0.65015 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.65015 ABS 0.0
rhoR207_206r__r238_206r -0.58872 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.58872 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.58845 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.58845 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.307 Ma ABS 0.178 Ma
age206_238r_Th 206.408 Ma ABS 0.178 Ma
age207_206r 184.954 Ma ABS 19.691 Ma
age207_206r_Pa 184.906 Ma ABS 19.692 Ma
age207_206r_Th 183.797 Ma ABS 19.697 Ma
age207_206r_ThPa 183.749 Ma ABS 19.698 Ma
age207_235r 204.598 Ma ABS 1.668 Ma
age207_235r_Pa 204.594 Ma ABS 1.668 Ma
bestAge 206.307 Ma ABS 0.178 Ma
percentDiscordance -11.54498

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 6.17748 ABS 0.0
rTh_Usample 0.15543 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 434.71457 ABS 0.0
r207_206s 0.04981 ABS 0.0
r235_207s 4.47959 ABS 0.0
r238_206s 30.74934 ABS 0.0
r238_207s 617.37059 ABS 0.0


Sample Name = AF25-079
Legacy = false
Fraction ID = z06
Grain ID = z06
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00084 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.00206 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 0.99096 PCT 0.00437
r270_265m 0.2399 PCT 0.00804
r270_267m 0.23773 PCT 0.00735
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0073 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00085 PCT 0.50758
r206_204m 923.88236 PCT 0.5125
r206_205m 0.78526 PCT 0.01938
r206_207m 15.42321 PCT 0.06069
r206_208m 10.38705 PCT 0.06573
r207_204m 59.90723 PCT 0.52713
r207_205m 0.05092 PCT 0.06299
r208_204m 88.94809 PCT 0.51421
r208_205m 0.0756 PCT 0.06537
r233_235m 0.99503 PCT 0.00437
r238_233m 0.2399 PCT 0.00804
r238_235m 0.2387 PCT 0.00735

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03255 ABS 0.00002
r206_238r_Th 0.03256 ABS 0.00002
r207_206r 0.05026 ABS 0.0002
r207_206r_Pa 0.05026 ABS 0.0002
r207_206r_Th 0.05024 ABS 0.0002
r207_206r_ThPa 0.05023 ABS 0.0002
r207_235r 0.22545 ABS 0.00094
r207_235r_Pa 0.22544 ABS 0.00094
r208_206r 0.05968 ABS 0.0
rhoR206_238r__r207_235r 0.61545 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.61544 ABS 0.0
rhoR206_238r_Th__r207_235r 0.61517 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.61517 ABS 0.0
rhoR207_206r__r238_206r -0.53076 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.53076 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.53052 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.53051 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.471 Ma ABS 0.104 Ma
age206_238r_Th 206.571 Ma ABS 0.104 Ma
age207_206r 205.994 Ma ABS 9.039 Ma
age207_206r_Pa 205.946 Ma ABS 9.039 Ma
age207_206r_Th 204.853 Ma ABS 9.041 Ma
age207_206r_ThPa 204.805 Ma ABS 9.042 Ma
age207_235r 206.433 Ma ABS 0.783 Ma
age207_235r_Pa 206.429 Ma ABS 0.783 Ma
bestAge 206.471 Ma ABS 0.104 Ma
percentDiscordance -0.23171

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 15.21311 ABS 0.0
rTh_Usample 0.18827 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 1,033.2094 ABS 0.0
r207_206s 0.05026 ABS 0.0
r235_207s 4.43565 ABS 0.0
r238_206s 30.72455 ABS 0.0
r238_207s 611.31405 ABS 0.0


Sample Name = AF25-079
Legacy = false
Fraction ID = z07
Grain ID = z07
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00082 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.00206 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 0.99154 PCT 0.00661
r270_265m 0.15211 PCT 0.01782
r270_267m 0.15082 PCT 0.01745
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0073 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00147 PCT 0.47043
r206_204m 348.52381 PCT 0.46723
r206_205m 0.51016 PCT 0.03267
r206_207m 11.03118 PCT 0.06339
r206_208m 6.22821 PCT 0.06171
r207_204m 31.59689 PCT 0.48044
r207_205m 0.04625 PCT 0.0641
r208_204m 55.96015 PCT 0.46839
r208_205m 0.08191 PCT 0.06201
r233_235m 0.99561 PCT 0.00661
r238_233m 0.15211 PCT 0.01782
r238_235m 0.15144 PCT 0.01745

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.0325 ABS 0.00004
r206_238r_Th 0.03252 ABS 0.00004
r207_206r 0.05042 ABS 0.00053
r207_206r_Pa 0.05042 ABS 0.00053
r207_206r_Th 0.0504 ABS 0.00053
r207_206r_ThPa 0.0504 ABS 0.00053
r207_235r 0.22586 ABS 0.00254
r207_235r_Pa 0.22585 ABS 0.00254
r208_206r 0.05961 ABS 0.0
rhoR206_238r__r207_235r 0.64072 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.64072 ABS 0.0
rhoR206_238r_Th__r207_235r 0.64041 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.64041 ABS 0.0
rhoR207_206r__r238_206r -0.57771 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.57771 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.57742 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.57742 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.188 Ma ABS 0.222 Ma
age206_238r_Th 206.288 Ma ABS 0.222 Ma
age207_206r 213.42 Ma ABS 24.461 Ma
age207_206r_Pa 213.373 Ma ABS 24.462 Ma
age207_206r_Th 212.28 Ma ABS 24.468 Ma
age207_206r_ThPa 212.232 Ma ABS 24.469 Ma
age207_235r 206.771 Ma ABS 2.1 Ma
age207_235r_Pa 206.767 Ma ABS 2.1 Ma
bestAge 206.188 Ma ABS 0.222 Ma
percentDiscordance 3.38861

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 5.28996 ABS 0.0
rTh_Usample 0.18803 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 371.38933 ABS 0.0
r207_206s 0.05042 ABS 0.0
r235_207s 4.42762 ABS 0.0
r238_206s 30.76735 ABS 0.0
r238_207s 610.20747 ABS 0.0


Sample Name = AF25-079
Legacy = false
Fraction ID = z11
Grain ID = z11
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00081 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.01 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.00206 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 0.99117 PCT 0.00325
r270_265m 0.20193 PCT 0.00634
r270_267m 0.20014 PCT 0.00578
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.007 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00064 PCT 0.3375
r206_204m 1,024.01268 PCT 0.33934
r206_205m 0.65826 PCT 0.01188
r206_207m 15.87176 PCT 0.05108
r206_208m 11.03639 PCT 0.0399
r207_204m 64.372 PCT 0.32115
r207_205m 0.04148 PCT 0.05011
r208_204m 92.60017 PCT 0.30761
r208_205m 0.05966 PCT 0.04207
r233_235m 0.99523 PCT 0.00325
r238_233m 0.20193 PCT 0.00634
r238_235m 0.20096 PCT 0.00578

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03258 ABS 0.00001
r206_238r_Th 0.03259 ABS 0.00001
r207_206r 0.05028 ABS 0.00015
r207_206r_Pa 0.05028 ABS 0.00015
r207_206r_Th 0.05025 ABS 0.00015
r207_206r_ThPa 0.05025 ABS 0.00015
r207_235r 0.22572 ABS 0.00074
r207_235r_Pa 0.22572 ABS 0.00074
r208_206r 0.05863 ABS 0.0
rhoR206_238r__r207_235r 0.58825 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.58824 ABS 0.0
rhoR206_238r_Th__r207_235r 0.58797 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.58796 ABS 0.0
rhoR207_206r__r238_206r -0.48986 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.48985 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.48962 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.48961 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.656 Ma ABS 0.09 Ma
age206_238r_Th 206.756 Ma ABS 0.09 Ma
age207_206r 206.745 Ma ABS 7.085 Ma
age207_206r_Pa 206.698 Ma ABS 7.085 Ma
age207_206r_Th 205.605 Ma ABS 7.087 Ma
age207_206r_ThPa 205.557 Ma ABS 7.088 Ma
age207_235r 206.663 Ma ABS 0.616 Ma
age207_235r_Pa 206.659 Ma ABS 0.616 Ma
bestAge 206.656 Ma ABS 0.09 Ma
percentDiscordance 0.0434

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 17.57942 ABS 0.0
rTh_Usample 0.18494 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 1,192.1305 ABS 0.0
r207_206s 0.05028 ABS 0.0
r235_207s 4.43018 ABS 0.0
r238_206s 30.69665 ABS 0.0
r238_207s 610.561 ABS 0.0


Sample Name = AF25-079
Legacy = false
Fraction ID = z12
Grain ID = z12
Zircon = true
Time Stamp = March 31, 2026 4:07 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 0.00206 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 0.98658 PCT 0.0034
r270_265m 0.84439 PCT 0.00485
r270_267m 0.83306 PCT 0.0038
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0073 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00068 PCT 0.23675
r206_204m 4,016.35614 PCT 0.23855
r206_205m 2.75021 PCT 0.00898
r206_207m 18.67307 PCT 0.0185
r206_208m 14.37984 PCT 0.01859
r207_204m 215.10129 PCT 0.24043
r207_205m 0.14729 PCT 0.0186
r208_204m 279.3067 PCT 0.24281
r208_205m 0.19126 PCT 0.02236
r233_235m 0.99061 PCT 0.0034
r238_233m 0.84439 PCT 0.00485
r238_235m 0.83646 PCT 0.0038

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03256 ABS 0.00001
r206_238r_Th 0.03257 ABS 0.00001
r207_206r 0.05034 ABS 0.00004
r207_206r_Pa 0.05034 ABS 0.00004
r207_206r_Th 0.05032 ABS 0.00004
r207_206r_ThPa 0.05031 ABS 0.00004
r207_235r 0.22588 ABS 0.00023
r207_235r_Pa 0.22588 ABS 0.00023
r208_206r 0.06147 ABS 0.0
rhoR206_238r__r207_235r 0.65346 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.65332 ABS 0.0
rhoR206_238r_Th__r207_235r 0.6533 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.65316 ABS 0.0
rhoR207_206r__r238_206r -0.43 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.42988 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.42992 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.4298 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.539 Ma ABS 0.062 Ma
age206_238r_Th 206.639 Ma ABS 0.062 Ma
age207_206r 209.7 Ma ABS 1.969 Ma
age207_206r_Pa 209.652 Ma ABS 1.97 Ma
age207_206r_Th 208.563 Ma ABS 1.97 Ma
age207_206r_ThPa 208.515 Ma ABS 1.971 Ma
age207_235r 206.794 Ma ABS 0.19 Ma
age207_235r_Pa 206.79 Ma ABS 0.19 Ma
bestAge 206.539 Ma ABS 0.062 Ma
percentDiscordance 1.50739

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 69.35112 ABS 0.0
rTh_Usample 0.19392 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 4,635.91992 ABS 0.0
r207_206s 0.05034 ABS 0.0
r235_207s 4.42708 ABS 0.0
r238_206s 30.71426 ABS 0.0
r238_207s 610.13319 ABS 0.0




filename:27986.xml
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