This sample belongs to: Brandon Keough

Sample Unique Identifier = IECAR000H (Detail)
Aliquot Unique Identifier = 10.58052/IECAR000H (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: 207331017.2066218554973602294921875
Uncertainty Type: ABS
One Sigma: 58214.497359575369046069681644439697265625
Mean Squared Weighted Deviation: 1.627226628178718659256674072821624577045440673828125
Internal Two Sigma Uncertainty: 116428.99471915073809213936328887939453125
PlusInternal Two Sigma Uncertainty:
Minus Internal Two Sigma Uncertainty:
Internal Two Sigma Uncertainty with Tracer Calibration Uncertainty: 154819.75703604376758448779582977294921875
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: 270449.1713750204653479158878326416015625
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
z05
z08
z09
z12
z18
z19

Explanation: Explanation
Comment: Comment
Preferred: true


Alph Pb Models:
Name Value Uncertainty Type One Sigma
20240419_Pb_Daly 0.00141 ABS 0.0002


Analysis Fractions
Sample Name = SH24-076
Legacy = false
Fraction ID = z01
Grain ID = z01
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00077 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 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 0.99142 PCT 0.00633
r270_265m 0.15584 PCT 0.01842
r270_267m 0.1545 PCT 0.01739
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.005 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00074 PCT 0.6606
r206_204m 688.46169 PCT 0.65903
r206_205m 0.51095 PCT 0.04311
r206_207m 14.37598 PCT 0.12236
r206_208m 11.50583 PCT 0.11968
r207_204m 47.89016 PCT 0.6494
r207_205m 0.03554 PCT 0.132
r208_204m 59.83721 PCT 0.65383
r208_205m 0.04441 PCT 0.10175
r233_235m 0.99537 PCT 0.00633
r238_233m 0.15584 PCT 0.01842
r238_235m 0.15512 PCT 0.01739

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03265 ABS 0.00002
r206_238r_Th 0.03267 ABS 0.00002
r207_206r 0.05024 ABS 0.00027
r207_206r_Pa 0.05024 ABS 0.00027
r207_206r_Th 0.05021 ABS 0.00027
r207_206r_ThPa 0.05021 ABS 0.00027
r207_235r 0.22606 ABS 0.00131
r207_235r_Pa 0.22605 ABS 0.00131
r208_206r 0.0378 ABS 0.0
rhoR206_238r__r207_235r 0.5416 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.54159 ABS 0.0
rhoR206_238r_Th__r207_235r 0.5413 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.5413 ABS 0.0
rhoR207_206r__r238_206r -0.44192 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.44192 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.44167 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.44167 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.106 Ma ABS 0.15 Ma
age206_238r_Th 207.208 Ma ABS 0.15 Ma
age207_206r 205.007 Ma ABS 12.56 Ma
age207_206r_Pa 204.959 Ma ABS 12.561 Ma
age207_206r_Th 203.846 Ma ABS 12.564 Ma
age207_206r_ThPa 203.799 Ma ABS 12.565 Ma
age207_235r 206.937 Ma ABS 1.082 Ma
age207_235r_Pa 206.933 Ma ABS 1.082 Ma
bestAge 206.971 Ma ABS 0.185 Ma
percentDiscordance -1.02401

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 11.23828 ABS 0.0
rTh_Usample 0.11926 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 783.34367 ABS 0.0
r207_206s 0.05024 ABS 0.0
r235_207s 4.4237 ABS 0.0
r238_206s 30.62876 ABS 0.0
r238_207s 609.66729 ABS 0.0


Sample Name = SH24-076
Legacy = false
Fraction ID = z02
Grain ID = z02
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00081 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 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 0.99185 PCT 0.00376
r270_265m 0.10906 PCT 0.01206
r270_267m 0.10817 PCT 0.01314
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.006 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00046 PCT 0.63298
r206_204m 761.34915 PCT 0.63652
r206_205m 0.35317 PCT 0.0297
r206_207m 14.97072 PCT 0.07239
r206_208m 12.19324 PCT 0.10704
r207_204m 50.8574 PCT 0.64064
r207_205m 0.02359 PCT 0.07875
r208_204m 62.44694 PCT 0.65823
r208_205m 0.02897 PCT 0.09647
r233_235m 0.9958 PCT 0.00376
r238_233m 0.10906 PCT 0.01206
r238_235m 0.1086 PCT 0.01314

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03265 ABS 0.00002
r206_238r_Th 0.03266 ABS 0.00002
r207_206r 0.05045 ABS 0.00023
r207_206r_Pa 0.05045 ABS 0.00023
r207_206r_Th 0.05042 ABS 0.00023
r207_206r_ThPa 0.05042 ABS 0.00023
r207_235r 0.22698 ABS 0.00111
r207_235r_Pa 0.22698 ABS 0.00111
r208_206r 0.04047 ABS 0.0
rhoR206_238r__r207_235r 0.57848 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.57848 ABS 0.0
rhoR206_238r_Th__r207_235r 0.57819 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.57819 ABS 0.0
rhoR207_206r__r238_206r -0.48226 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.48226 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.482 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.482 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.092 Ma ABS 0.129 Ma
age206_238r_Th 207.194 Ma ABS 0.129 Ma
age207_206r 214.634 Ma ABS 10.504 Ma
age207_206r_Pa 214.587 Ma ABS 10.504 Ma
age207_206r_Th 213.478 Ma ABS 10.507 Ma
age207_206r_ThPa 213.43 Ma ABS 10.508 Ma
age207_235r 207.703 Ma ABS 0.915 Ma
age207_235r_Pa 207.699 Ma ABS 0.915 Ma
bestAge 206.98 Ma ABS 0.157 Ma
percentDiscordance 3.51373

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 13.63326 ABS 0.0
rTh_Usample 0.12768 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 943.84399 ABS 0.0
r207_206s 0.05045 ABS 0.0
r235_207s 4.40567 ABS 0.0
r238_206s 30.63089 ABS 0.0
r238_207s 607.1829 ABS 0.0


Sample Name = SH24-076
Legacy = false
Fraction ID = z05
Grain ID = z05
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00083 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 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 0.99237 PCT 0.00258
r270_265m 0.04012 PCT 0.01361
r270_267m 0.03981 PCT 0.0132
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.01 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00028 PCT 0.30722
r206_204m 447.85561 PCT 0.312
r206_205m 0.12488 PCT 0.01883
r206_207m 13.40475 PCT 0.05756
r206_208m 9.2985 PCT 0.05946
r207_204m 33.41064 PCT 0.31274
r207_205m 0.00932 PCT 0.0567
r208_204m 48.16543 PCT 0.31683
r208_205m 0.01343 PCT 0.05932
r233_235m 0.99633 PCT 0.00258
r238_233m 0.04012 PCT 0.01361
r238_235m 0.03997 PCT 0.0132

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03269 ABS 0.00003
r206_238r_Th 0.0327 ABS 0.00003
r207_206r 0.05016 ABS 0.00029
r207_206r_Pa 0.05016 ABS 0.00029
r207_206r_Th 0.05014 ABS 0.00029
r207_206r_ThPa 0.05014 ABS 0.00029
r207_235r 0.22598 ABS 0.00139
r207_235r_Pa 0.22598 ABS 0.00139
r208_206r 0.04558 ABS 0.0
rhoR206_238r__r207_235r 0.57117 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.57116 ABS 0.0
rhoR206_238r_Th__r207_235r 0.57087 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.57087 ABS 0.0
rhoR207_206r__r238_206r -0.47686 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.47686 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.47661 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.47661 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.352 Ma ABS 0.158 Ma
age206_238r_Th 207.453 Ma ABS 0.158 Ma
age207_206r 201.485 Ma ABS 13.315 Ma
age207_206r_Pa 201.438 Ma ABS 13.315 Ma
age207_206r_Th 200.333 Ma ABS 13.319 Ma
age207_206r_ThPa 200.286 Ma ABS 13.319 Ma
age207_235r 206.878 Ma ABS 1.15 Ma
age207_235r_Pa 206.874 Ma ABS 1.15 Ma
bestAge 207.19 Ma ABS 0.203 Ma
percentDiscordance -2.9116

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 9.50617 ABS 0.0
rTh_Usample 0.14379 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 660.89424 ABS 0.0
r207_206s 0.05016 ABS 0.0
r235_207s 4.42509 ABS 0.0
r238_206s 30.59195 ABS 0.0
r238_207s 609.85924 ABS 0.0


Sample Name = SH24-076
Legacy = false
Fraction ID = z08
Grain ID = z08
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00081 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 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 0.99151 PCT 0.00326
r270_265m 0.15695 PCT 0.00717
r270_267m 0.15561 PCT 0.00694
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.006 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.0006 PCT 0.44717
r206_204m 848.96763 PCT 0.44851
r206_205m 0.5125 PCT 0.01863
r206_207m 15.24401 PCT 0.06338
r206_208m 12.45095 PCT 0.06966
r207_204m 55.69135 PCT 0.43924
r207_205m 0.03362 PCT 0.06661
r208_204m 68.18686 PCT 0.45633
r208_205m 0.04116 PCT 0.0649
r233_235m 0.99546 PCT 0.00326
r238_233m 0.15695 PCT 0.00717
r238_235m 0.15623 PCT 0.00694

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03267 ABS 0.00002
r206_238r_Th 0.03269 ABS 0.00002
r207_206r 0.05035 ABS 0.00019
r207_206r_Pa 0.05035 ABS 0.00019
r207_206r_Th 0.05032 ABS 0.00019
r207_206r_ThPa 0.05032 ABS 0.00019
r207_235r 0.22671 ABS 0.00093
r207_235r_Pa 0.22671 ABS 0.00093
r208_206r 0.04161 ABS 0.0
rhoR206_238r__r207_235r 0.58928 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.58928 ABS 0.0
rhoR206_238r_Th__r207_235r 0.58899 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.58898 ABS 0.0
rhoR207_206r__r238_206r -0.50027 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.50027 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.50001 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.50001 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.257 Ma ABS 0.103 Ma
age206_238r_Th 207.359 Ma ABS 0.103 Ma
age207_206r 210.037 Ma ABS 8.852 Ma
age207_206r_Pa 209.989 Ma ABS 8.852 Ma
age207_206r_Th 208.882 Ma ABS 8.855 Ma
age207_206r_ThPa 208.834 Ma ABS 8.855 Ma
age207_235r 207.482 Ma ABS 0.768 Ma
age207_235r_Pa 207.478 Ma ABS 0.768 Ma
bestAge 207.151 Ma ABS 0.133 Ma
percentDiscordance 1.32349

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 14.45898 ABS 0.0
rTh_Usample 0.13126 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 998.94301 ABS 0.0
r207_206s 0.05035 ABS 0.0
r235_207s 4.41086 ABS 0.0
r238_206s 30.60617 ABS 0.0
r238_207s 607.89778 ABS 0.0


Sample Name = SH24-076
Legacy = false
Fraction ID = z09
Grain ID = z09
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00088 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 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 0.9924 PCT 0.00641
r270_265m 0.0502 PCT 0.01768
r270_267m 0.04982 PCT 0.01904
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0052 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.0007 PCT 0.42868
r206_204m 237.17585 PCT 0.43478
r206_205m 0.16532 PCT 0.03331
r206_207m 9.44135 PCT 0.08011
r206_208m 5.51939 PCT 0.0908
r207_204m 25.12072 PCT 0.42309
r207_205m 0.01751 PCT 0.07889
r208_204m 42.97518 PCT 0.45882
r208_205m 0.02995 PCT 0.09281
r233_235m 0.99636 PCT 0.00641
r238_233m 0.0502 PCT 0.01768
r238_235m 0.05002 PCT 0.01904

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03264 ABS 0.00005
r206_238r_Th 0.03266 ABS 0.00005
r207_206r 0.05013 ABS 0.00073
r207_206r_Pa 0.05013 ABS 0.00073
r207_206r_Th 0.0501 ABS 0.00073
r207_206r_ThPa 0.0501 ABS 0.00073
r207_235r 0.22548 ABS 0.00349
r207_235r_Pa 0.22548 ABS 0.00349
r208_206r 0.03969 ABS 0.0
rhoR206_238r__r207_235r 0.633 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.633 ABS 0.0
rhoR206_238r_Th__r207_235r 0.6327 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.6327 ABS 0.0
rhoR207_206r__r238_206r -0.56467 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.56467 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.56439 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.56439 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.046 Ma ABS 0.326 Ma
age206_238r_Th 207.148 Ma ABS 0.326 Ma
age207_206r 199.823 Ma ABS 33.699 Ma
age207_206r_Pa 199.775 Ma ABS 33.7 Ma
age207_206r_Th 198.662 Ma ABS 33.709 Ma
age207_206r_ThPa 198.614 Ma ABS 33.71 Ma
age207_235r 206.464 Ma ABS 2.89 Ma
age207_235r_Pa 206.46 Ma ABS 2.89 Ma
bestAge 206.636 Ma ABS 0.459 Ma
percentDiscordance -3.61502

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 3.73238 ABS 0.0
rTh_Usample 0.12521 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 272.17732 ABS 0.0
r207_206s 0.05013 ABS 0.0
r235_207s 4.4349 ABS 0.0
r238_206s 30.63783 ABS 0.0
r238_207s 611.2114 ABS 0.0


Sample Name = SH24-076
Legacy = false
Fraction ID = z12
Grain ID = z12
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00071 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 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 0.99207 PCT 0.00586
r270_265m 0.04869 PCT 0.0181
r270_267m 0.0483 PCT 0.0194
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 0.00047 PCT 0.49104
r206_204m 331.83642 PCT 0.49939
r206_205m 0.15672 PCT 0.02864
r206_207m 11.26016 PCT 0.11403
r206_208m 7.01707 PCT 0.10489
r207_204m 29.46957 PCT 0.48002
r207_205m 0.01392 PCT 0.11061
r208_204m 47.28985 PCT 0.48739
r208_205m 0.02234 PCT 0.09054
r233_235m 0.99602 PCT 0.00586
r238_233m 0.04869 PCT 0.0181
r238_235m 0.04849 PCT 0.0194

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03277 ABS 0.00004
r206_238r_Th 0.03279 ABS 0.00004
r207_206r 0.05117 ABS 0.00049
r207_206r_Pa 0.05117 ABS 0.00049
r207_206r_Th 0.05115 ABS 0.00049
r207_206r_ThPa 0.05114 ABS 0.00049
r207_235r 0.23114 ABS 0.00237
r207_235r_Pa 0.23113 ABS 0.00237
r208_206r 0.04722 ABS 0.0
rhoR206_238r__r207_235r 0.61832 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.61832 ABS 0.0
rhoR206_238r_Th__r207_235r 0.61803 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.61803 ABS 0.0
rhoR207_206r__r238_206r -0.54168 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.54168 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.54142 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.54142 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.89 Ma ABS 0.235 Ma
age206_238r_Th 207.991 Ma ABS 0.235 Ma
age207_206r 247.504 Ma ABS 22.046 Ma
age207_206r_Pa 247.457 Ma ABS 22.047 Ma
age207_206r_Th 246.366 Ma ABS 22.053 Ma
age207_206r_ThPa 246.32 Ma ABS 22.054 Ma
age207_235r 211.136 Ma ABS 1.953 Ma
age207_235r_Pa 211.132 Ma ABS 1.953 Ma
bestAge 207.623 Ma ABS 0.315 Ma
percentDiscordance 16.00523

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 5.80149 ABS 0.0
rTh_Usample 0.14896 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 409.63991 ABS 0.0
r207_206s 0.05117 ABS 0.0
r235_207s 4.32646 ABS 0.0
r238_206s 30.51143 ABS 0.0
r238_207s 596.26655 ABS 0.0


Sample Name = SH24-076
Legacy = false
Fraction ID = z14
Grain ID = z14
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00079 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 ABS 0.0
pbBlankMassInGrams 0.0 ABS 0.0
r18O_16O 0.002 ABS 0.00002
r18O_16O_revised 0.002 ABS 0.00002
r238_235b 137.8185 ABS 0.0223
r238_235s 137.8185 ABS 0.0223
r265_267m 0.99221 PCT 0.00482
r270_265m 0.06809 PCT 0.01443
r270_267m 0.06756 PCT 0.01301
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.005 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00043 PCT 0.53507
r206_204m 509.89757 PCT 0.53509
r206_205m 0.21967 PCT 0.02847
r206_207m 13.4116 PCT 0.09026
r206_208m 9.32834 PCT 0.09955
r207_204m 38.01946 PCT 0.53135
r207_205m 0.01638 PCT 0.08693
r208_204m 54.6625 PCT 0.53895
r208_205m 0.02355 PCT 0.09188
r233_235m 0.99617 PCT 0.00482
r238_233m 0.06809 PCT 0.01443
r238_235m 0.06783 PCT 0.01301

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.0328 ABS 0.00003
r206_238r_Th 0.03281 ABS 0.00003
r207_206r 0.05049 ABS 0.00032
r207_206r_Pa 0.05049 ABS 0.00032
r207_206r_Th 0.05047 ABS 0.00032
r207_206r_ThPa 0.05047 ABS 0.00032
r207_235r 0.22822 ABS 0.00154
r207_235r_Pa 0.22821 ABS 0.00154
r208_206r 0.04625 ABS 0.0
rhoR206_238r__r207_235r 0.53732 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.53731 ABS 0.0
rhoR206_238r_Th__r207_235r 0.53701 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.53701 ABS 0.0
rhoR207_206r__r238_206r -0.43786 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.43786 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.43759 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.43759 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 208.02 Ma ABS 0.175 Ma
age206_238r_Th 208.121 Ma ABS 0.175 Ma
age207_206r 216.692 Ma ABS 14.612 Ma
age207_206r_Pa 216.645 Ma ABS 14.613 Ma
age207_206r_Th 215.548 Ma ABS 14.616 Ma
age207_206r_ThPa 215.501 Ma ABS 14.617 Ma
age207_235r 208.725 Ma ABS 1.269 Ma
age207_235r_Pa 208.721 Ma ABS 1.269 Ma
bestAge 207.853 Ma ABS 0.219 Ma
percentDiscordance 4.00221

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 9.27299 ABS 0.0
rTh_Usample 0.14592 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 644.56073 ABS 0.0
r207_206s 0.05049 ABS 0.0
r235_207s 4.38182 ABS 0.0
r238_206s 30.49215 ABS 0.0
r238_207s 603.89571 ABS 0.0


Sample Name = SH24-076
Legacy = false
Fraction ID = z18
Grain ID = z18
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00081 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 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 0.99232 PCT 0.0027
r270_265m 0.04309 PCT 0.01638
r270_267m 0.04276 PCT 0.01652
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 0.00061 PCT 0.45017
r206_204m 231.16376 PCT 0.41649
r206_205m 0.14051 PCT 0.03953
r206_207m 9.3549 PCT 0.24392
r206_208m 5.37147 PCT 0.35229
r207_204m 24.70624 PCT 0.25439
r207_205m 0.01503 PCT 0.28096
r208_204m 43.03505 PCT 0.21533
r208_205m 0.02618 PCT 0.3913
r233_235m 0.99639 PCT 0.0027
r238_233m 0.04309 PCT 0.01638
r238_235m 0.04293 PCT 0.01652

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03266 ABS 0.00005
r206_238r_Th 0.03267 ABS 0.00005
r207_206r 0.05069 ABS 0.00069
r207_206r_Pa 0.05069 ABS 0.00069
r207_206r_Th 0.05066 ABS 0.00069
r207_206r_ThPa 0.05066 ABS 0.00069
r207_235r 0.22813 ABS 0.00332
r207_235r_Pa 0.22812 ABS 0.00332
r208_206r 0.04385 ABS 0.0
rhoR206_238r__r207_235r 0.62977 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.62977 ABS 0.0
rhoR206_238r_Th__r207_235r 0.62957 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.62957 ABS 0.0
rhoR207_206r__r238_206r -0.56223 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.56223 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.56207 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.56208 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.15 Ma ABS 0.302 Ma
age206_238r_Th 207.251 Ma ABS 0.302 Ma
age207_206r 225.626 Ma ABS 31.584 Ma
age207_206r_Pa 225.579 Ma ABS 31.585 Ma
age207_206r_Th 224.476 Ma ABS 31.593 Ma
age207_206r_ThPa 224.429 Ma ABS 31.594 Ma
age207_235r 208.65 Ma ABS 2.744 Ma
age207_235r_Pa 208.646 Ma ABS 2.744 Ma
bestAge 206.738 Ma ABS 0.443 Ma
percentDiscordance 8.189

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 3.73146 ABS 0.0
rTh_Usample 0.13833 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 271.01235 ABS 0.0
r207_206s 0.05069 ABS 0.0
r235_207s 4.38356 ABS 0.0
r238_206s 30.62229 ABS 0.0
r238_207s 604.13535 ABS 0.0


Sample Name = SH24-076
Legacy = false
Fraction ID = z19
Grain ID = z19
Zircon = true
Time Stamp = March 31, 2026 4:03 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 = 20240419_Pb_Daly
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 0.00141 ABS 0.0002
alphaU 0.00084 ABS 0.0
ar231_235sample 1.1 ABS 0.1
fractionMass 0.1 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 0.99235 PCT 0.0027
r270_265m 0.04663 PCT 0.01289
r270_267m 0.04627 PCT 0.01294
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 0.00052 PCT 0.24465
r206_204m 291.31032 PCT 0.24402
r206_205m 0.1503 PCT 0.01846
r206_207m 10.63577 PCT 0.06066
r206_208m 6.66127 PCT 0.05638
r207_204m 27.38956 PCT 0.23369
r207_205m 0.01413 PCT 0.05772
r208_204m 43.73118 PCT 0.2269
r208_205m 0.02256 PCT 0.05858
r233_235m 0.99642 PCT 0.0027
r238_233m 0.04663 PCT 0.01289
r238_235m 0.04646 PCT 0.01294

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03264 ABS 0.00004
r206_238r_Th 0.03265 ABS 0.00004
r207_206r 0.05049 ABS 0.00052
r207_206r_Pa 0.05049 ABS 0.00052
r207_206r_Th 0.05046 ABS 0.00052
r207_206r_ThPa 0.05046 ABS 0.00052
r207_235r 0.2271 ABS 0.00251
r207_235r_Pa 0.22709 ABS 0.00251
r208_206r 0.03959 ABS 0.0
rhoR206_238r__r207_235r 0.60574 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.60574 ABS 0.0
rhoR206_238r_Th__r207_235r 0.60543 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.60543 ABS 0.0
rhoR207_206r__r238_206r -0.53062 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.53062 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.53034 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.53034 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.039 Ma ABS 0.243 Ma
age206_238r_Th 207.141 Ma ABS 0.242 Ma
age207_206r 216.452 Ma ABS 24.021 Ma
age207_206r_Pa 216.405 Ma ABS 24.022 Ma
age207_206r_Th 215.295 Ma ABS 24.029 Ma
age207_206r_ThPa 215.248 Ma ABS 24.029 Ma
age207_235r 207.801 Ma ABS 2.077 Ma
age207_235r_Pa 207.797 Ma ABS 2.077 Ma
bestAge 206.728 Ma ABS 0.345 Ma
percentDiscordance 4.34884

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 4.92133 ABS 0.0
rTh_Usample 0.12488 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 352.86926 ABS 0.0
r207_206s 0.05049 ABS 0.0
r235_207s 4.40336 ABS 0.0
r238_206s 30.63888 ABS 0.0
r238_207s 606.86442 ABS 0.0




filename:27984.xml
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