This sample belongs to: Brandon Keough

Sample Unique Identifier = IECAR000G (Detail)
Aliquot Unique Identifier = 10.58052/IECAR000G (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: 207236698.6520479023456573486328125
Uncertainty Type: ABS
One Sigma: 38623.98811431112699210643768310546875
Mean Squared Weighted Deviation: 1.1731682374230099075163025190704502165317535400390625
Internal Two Sigma Uncertainty: 77247.9762286222539842128753662109375
PlusInternal Two Sigma Uncertainty:
Minus Internal Two Sigma Uncertainty:
Internal Two Sigma Uncertainty with Tracer Calibration Uncertainty: 119172.706233611781499348580837249755859375
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: 251665.608651258633472025394439697265625
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:
z02
z03
z04
z08
z09
z15
z16

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 = SH24-020
Legacy = false
Fraction ID = z02
Grain ID = z02
Zircon = true
Time Stamp = March 31, 2026 3:56 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 0.99092 PCT 0.0029
r270_265m 0.23548 PCT 0.00554
r270_267m 0.23334 PCT 0.00411
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 0.00079 PCT 0.2328
r206_204m 972.09854 PCT 0.23351
r206_205m 0.7717 PCT 0.00897
r206_207m 15.63136 PCT 0.02672
r206_208m 12.82691 PCT 0.02587
r207_204m 62.18981 PCT 0.23917
r207_205m 0.04937 PCT 0.02597
r208_204m 75.78548 PCT 0.22915
r208_205m 0.06016 PCT 0.02575
r233_235m 0.99486 PCT 0.0029
r238_233m 0.23548 PCT 0.00554
r238_235m 0.23427 PCT 0.00411

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03264 ABS 0.00001
r206_238r_Th 0.03265 ABS 0.00001
r207_206r 0.05024 ABS 0.00016
r207_206r_Pa 0.05024 ABS 0.00016
r207_206r_Th 0.05022 ABS 0.00016
r207_206r_ThPa 0.05021 ABS 0.00016
r207_235r 0.22597 ABS 0.00079
r207_235r_Pa 0.22596 ABS 0.00079
r208_206r 0.04315 ABS 0.0
rhoR206_238r__r207_235r 0.60477 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.60476 ABS 0.0
rhoR206_238r_Th__r207_235r 0.60449 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.60448 ABS 0.0
rhoR207_206r__r238_206r -0.51679 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.51679 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.51654 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.51653 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.02 Ma ABS 0.089 Ma
age206_238r_Th 207.121 Ma ABS 0.089 Ma
age207_206r 205.087 Ma ABS 7.59 Ma
age207_206r_Pa 205.039 Ma ABS 7.59 Ma
age207_206r_Th 203.931 Ma ABS 7.592 Ma
age207_206r_ThPa 203.883 Ma ABS 7.593 Ma
age207_235r 206.864 Ma ABS 0.658 Ma
age207_235r_Pa 206.86 Ma ABS 0.658 Ma
bestAge 207.02 Ma ABS 0.089 Ma
percentDiscordance -0.94271

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 15.95094 ABS 0.0
rTh_Usample 0.13612 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 1,098.66511 ABS 0.0
r207_206s 0.05024 ABS 0.0
r235_207s 4.42543 ABS 0.0
r238_206s 30.64178 ABS 0.0
r238_207s 609.90559 ABS 0.0


Sample Name = SH24-020
Legacy = false
Fraction ID = z03
Grain ID = z03
Zircon = true
Time Stamp = March 31, 2026 3:56 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 0.98955 PCT 0.00247
r270_265m 0.44113 PCT 0.0042
r270_267m 0.43652 PCT 0.00427
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0075 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00075 PCT 0.25609
r206_204m 1,928.8002 PCT 0.25523
r206_205m 1.44363 PCT 0.00901
r206_207m 17.49142 PCT 0.02615
r206_208m 16.85173 PCT 0.03065
r207_204m 110.27173 PCT 0.25593
r207_205m 0.08253 PCT 0.02575
r208_204m 114.45724 PCT 0.25396
r208_205m 0.08567 PCT 0.03015
r233_235m 0.99348 PCT 0.00247
r238_233m 0.44113 PCT 0.0042
r238_235m 0.43825 PCT 0.00427

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03267 ABS 0.00001
r206_238r_Th 0.03268 ABS 0.00001
r207_206r 0.05033 ABS 0.00008
r207_206r_Pa 0.05033 ABS 0.00008
r207_206r_Th 0.0503 ABS 0.00008
r207_206r_ThPa 0.0503 ABS 0.00008
r207_235r 0.22657 ABS 0.00042
r207_235r_Pa 0.22656 ABS 0.00042
r208_206r 0.04195 ABS 0.0
rhoR206_238r__r207_235r 0.56618 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.56614 ABS 0.0
rhoR206_238r_Th__r207_235r 0.56595 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.56592 ABS 0.0
rhoR207_206r__r238_206r -0.42299 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.42296 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.42282 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.42279 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.208 Ma ABS 0.068 Ma
age206_238r_Th 207.309 Ma ABS 0.068 Ma
age207_206r 209.086 Ma ABS 3.864 Ma
age207_206r_Pa 209.039 Ma ABS 3.864 Ma
age207_206r_Th 207.931 Ma ABS 3.865 Ma
age207_206r_ThPa 207.884 Ma ABS 3.866 Ma
age207_235r 207.36 Ma ABS 0.344 Ma
age207_235r_Pa 207.356 Ma ABS 0.344 Ma
bestAge 207.208 Ma ABS 0.068 Ma
percentDiscordance 0.8985

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 32.14243 ABS 0.0
rTh_Usample 0.13233 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 2,197.2449 ABS 0.0
r207_206s 0.05033 ABS 0.0
r235_207s 4.41373 ABS 0.0
r238_206s 30.61356 ABS 0.0
r238_207s 608.294 ABS 0.0


Sample Name = SH24-020
Legacy = false
Fraction ID = z04
Grain ID = z04
Zircon = true
Time Stamp = March 31, 2026 3:56 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 0.002 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 0.99026 PCT 0.00367
r270_265m 0.32438 PCT 0.00567
r270_267m 0.32122 PCT 0.00481
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0071 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00075 PCT 0.29449
r206_204m 1,419.35697 PCT 0.29256
r206_205m 1.0614 PCT 0.00898
r206_207m 16.74783 PCT 0.02798
r206_208m 9.83773 PCT 0.02781
r207_204m 84.74778 PCT 0.28567
r207_205m 0.06338 PCT 0.02884
r208_204m 144.27545 PCT 0.28613
r208_205m 0.10789 PCT 0.02701
r233_235m 0.99419 PCT 0.00367
r238_233m 0.32438 PCT 0.00567
r238_235m 0.3225 PCT 0.00481

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03265 ABS 0.00001
r206_238r_Th 0.03267 ABS 0.00001
r207_206r 0.05038 ABS 0.00011
r207_206r_Pa 0.05038 ABS 0.00011
r207_206r_Th 0.05036 ABS 0.00011
r207_206r_ThPa 0.05036 ABS 0.00011
r207_235r 0.22672 ABS 0.00055
r207_235r_Pa 0.22672 ABS 0.00055
r208_206r 0.07851 ABS 0.0
rhoR206_238r__r207_235r 0.5713 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.57128 ABS 0.0
rhoR206_238r_Th__r207_235r 0.571 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.57098 ABS 0.0
rhoR207_206r__r238_206r -0.45488 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.45486 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.45461 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.45459 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.12 Ma ABS 0.076 Ma
age206_238r_Th 207.219 Ma ABS 0.076 Ma
age207_206r 211.707 Ma ABS 5.168 Ma
age207_206r_Pa 211.659 Ma ABS 5.168 Ma
age207_206r_Th 210.591 Ma ABS 5.169 Ma
age207_206r_ThPa 210.544 Ma ABS 5.17 Ma
age207_235r 207.491 Ma ABS 0.454 Ma
age207_235r_Pa 207.488 Ma ABS 0.454 Ma
bestAge 207.12 Ma ABS 0.076 Ma
percentDiscordance 2.16635

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 24.37709 ABS 0.0
rTh_Usample 0.24767 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 1,616.84086 ABS 0.0
r207_206s 0.05038 ABS 0.0
r235_207s 4.41063 ABS 0.0
r238_206s 30.62666 ABS 0.0
r238_207s 607.86652 ABS 0.0


Sample Name = SH24-020
Legacy = false
Fraction ID = z08
Grain ID = z08
Zircon = true
Time Stamp = March 31, 2026 3:56 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 0.002 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 0.99141 PCT 0.00447
r270_265m 0.17765 PCT 0.00756
r270_267m 0.17613 PCT 0.00784
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0078 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00089 PCT 0.3669
r206_204m 655.67601 PCT 0.36913
r206_205m 0.58517 PCT 0.01973
r206_207m 14.10432 PCT 0.05313
r206_208m 11.84469 PCT 0.05527
r207_204m 46.4888 PCT 0.37272
r207_205m 0.04149 PCT 0.05401
r208_204m 55.35801 PCT 0.37497
r208_205m 0.04941 PCT 0.05354
r233_235m 0.99535 PCT 0.00447
r238_233m 0.17765 PCT 0.00756
r238_235m 0.17683 PCT 0.00784

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 0.05026 ABS 0.00026
r207_206r_Pa 0.05026 ABS 0.00026
r207_206r_Th 0.05024 ABS 0.00026
r207_206r_ThPa 0.05024 ABS 0.00026
r207_235r 0.22616 ABS 0.00124
r207_235r_Pa 0.22616 ABS 0.00124
r208_206r 0.03183 ABS 0.0
rhoR206_238r__r207_235r 0.61794 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.61793 ABS 0.0
rhoR206_238r_Th__r207_235r 0.61765 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.61764 ABS 0.0
rhoR207_206r__r238_206r -0.54103 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.54103 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.54077 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.54077 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.098 Ma ABS 0.126 Ma
age206_238r_Th 207.201 Ma ABS 0.126 Ma
age207_206r 206.209 Ma ABS 11.888 Ma
age207_206r_Pa 206.161 Ma ABS 11.889 Ma
age207_206r_Th 205.042 Ma ABS 11.892 Ma
age207_206r_ThPa 204.994 Ma ABS 11.892 Ma
age207_235r 207.027 Ma ABS 1.027 Ma
age207_235r_Pa 207.023 Ma ABS 1.027 Ma
bestAge 207.098 Ma ABS 0.126 Ma
percentDiscordance -0.4313

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 10.39588 ABS 0.0
rTh_Usample 0.1004 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 729.94847 ABS 0.0
r207_206s 0.05026 ABS 0.0
r235_207s 4.42158 ABS 0.0
r238_206s 30.62997 ABS 0.0
r238_207s 609.37567 ABS 0.0


Sample Name = SH24-020
Legacy = false
Fraction ID = z09
Grain ID = z09
Zircon = true
Time Stamp = March 31, 2026 3:56 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 0.00092 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 0.99223 PCT 0.00268
r270_265m 0.08558 PCT 0.00989
r270_267m 0.08491 PCT 0.00969
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0066 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00064 PCT 0.32126
r206_204m 435.3719 PCT 0.32624
r206_205m 0.27974 PCT 0.02092
r206_207m 12.4515 PCT 0.05592
r206_208m 8.0457 PCT 0.05396
r207_204m 34.96658 PCT 0.33143
r207_205m 0.02247 PCT 0.04885
r208_204m 54.11239 PCT 0.32172
r208_205m 0.03477 PCT 0.05341
r233_235m 0.99618 PCT 0.00268
r238_233m 0.08558 PCT 0.00989
r238_235m 0.08525 PCT 0.00969

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03262 ABS 0.00003
r206_238r_Th 0.03263 ABS 0.00003
r207_206r 0.05026 ABS 0.00037
r207_206r_Pa 0.05026 ABS 0.00037
r207_206r_Th 0.05023 ABS 0.00037
r207_206r_ThPa 0.05023 ABS 0.00037
r207_235r 0.22593 ABS 0.00178
r207_235r_Pa 0.22593 ABS 0.00178
r208_206r 0.04837 ABS 0.0
rhoR206_238r__r207_235r 0.62046 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.62045 ABS 0.0
rhoR206_238r_Th__r207_235r 0.62016 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.62016 ABS 0.0
rhoR207_206r__r238_206r -0.54717 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.54717 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.54691 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.54691 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 206.918 Ma ABS 0.173 Ma
age206_238r_Th 207.019 Ma ABS 0.173 Ma
age207_206r 205.901 Ma ABS 17.11 Ma
age207_206r_Pa 205.853 Ma ABS 17.111 Ma
age207_206r_Th 204.751 Ma ABS 17.115 Ma
age207_206r_ThPa 204.703 Ma ABS 17.116 Ma
age207_235r 206.836 Ma ABS 1.473 Ma
age207_235r_Pa 206.832 Ma ABS 1.473 Ma
bestAge 206.918 Ma ABS 0.173 Ma
percentDiscordance -0.49379

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 7.2412 ABS 0.0
rTh_Usample 0.1526 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 506.56501 ABS 0.0
r207_206s 0.05026 ABS 0.0
r235_207s 4.42609 ABS 0.0
r238_206s 30.65715 ABS 0.0
r238_207s 609.99738 ABS 0.0


Sample Name = SH24-020
Legacy = false
Fraction ID = z11
Grain ID = z11
Zircon = true
Time Stamp = March 31, 2026 3:56 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 0.98843 PCT 0.0058
r270_265m 0.59833 PCT 0.00578
r270_267m 0.59141 PCT 0.00488
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0042 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00184 PCT 0.23522
r206_204m 1,075.63348 PCT 0.23853
r206_205m 1.98346 PCT 0.01502
r206_207m 15.76785 PCT 0.03855
r206_208m 15.20483 PCT 0.03232
r207_204m 68.21772 PCT 0.24209
r207_205m 0.12579 PCT 0.03801
r208_204m 70.74335 PCT 0.24028
r208_205m 0.13045 PCT 0.03386
r233_235m 0.99236 PCT 0.0058
r238_233m 0.59833 PCT 0.00578
r238_235m 0.59376 PCT 0.00488

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03277 ABS 0.00002
r206_238r_Th 0.03278 ABS 0.00002
r207_206r 0.05032 ABS 0.00016
r207_206r_Pa 0.05031 ABS 0.00016
r207_206r_Th 0.05029 ABS 0.00016
r207_206r_ThPa 0.05029 ABS 0.00016
r207_235r 0.22721 ABS 0.00078
r207_235r_Pa 0.2272 ABS 0.00078
r208_206r 0.03235 ABS 0.0
rhoR206_238r__r207_235r 0.5831 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.58309 ABS 0.0
rhoR206_238r_Th__r207_235r 0.58283 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.58282 ABS 0.0
rhoR207_206r__r238_206r -0.484 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.48399 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.48377 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.48376 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.834 Ma ABS 0.094 Ma
age206_238r_Th 207.936 Ma ABS 0.094 Ma
age207_206r 208.543 Ma ABS 7.346 Ma
age207_206r_Pa 208.496 Ma ABS 7.346 Ma
age207_206r_Th 207.381 Ma ABS 7.348 Ma
age207_206r_ThPa 207.334 Ma ABS 7.348 Ma
age207_235r 207.891 Ma ABS 0.642 Ma
age207_235r_Pa 207.887 Ma ABS 0.642 Ma
bestAge 207.834 Ma ABS 0.094 Ma
percentDiscordance 0.34019

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 16.30173 ABS 0.0
rTh_Usample 0.10207 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 1,133.44867 ABS 0.0
r207_206s 0.05032 ABS 0.0
r235_207s 4.40125 ABS 0.0
r238_206s 30.51987 ABS 0.0
r238_207s 606.57431 ABS 0.0


Sample Name = SH24-020
Legacy = false
Fraction ID = z15
Grain ID = z15
Zircon = true
Time Stamp = March 31, 2026 3:56 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 0.00086 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 0.99248 PCT 0.00344
r270_265m 0.03467 PCT 0.02321
r270_267m 0.03441 PCT 0.0224
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 0.00051 PCT 0.50709
r206_204m 217.15433 PCT 0.51583
r206_205m 0.11128 PCT 0.02786
r206_207m 9.23446 PCT 0.09214
r206_208m 5.01646 PCT 0.05984
r207_204m 23.51663 PCT 0.51849
r207_205m 0.01205 PCT 0.08645
r208_204m 43.2869 PCT 0.50418
r208_205m 0.02218 PCT 0.06021
r233_235m 0.99643 PCT 0.00344
r238_233m 0.03467 PCT 0.02321
r238_235m 0.03454 PCT 0.0224

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03266 ABS 0.00006
r206_238r_Th 0.03267 ABS 0.00006
r207_206r 0.04977 ABS 0.0008
r207_206r_Pa 0.04977 ABS 0.0008
r207_206r_Th 0.04975 ABS 0.0008
r207_206r_ThPa 0.04975 ABS 0.0008
r207_235r 0.22403 ABS 0.00383
r207_235r_Pa 0.22403 ABS 0.00383
r208_206r 0.05187 ABS 0.0
rhoR206_238r__r207_235r 0.64944 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.64943 ABS 0.0
rhoR206_238r_Th__r207_235r 0.64915 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.64915 ABS 0.0
rhoR207_206r__r238_206r -0.58575 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.58575 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.58549 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.58549 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.162 Ma ABS 0.348 Ma
age206_238r_Th 207.263 Ma ABS 0.348 Ma
age207_206r 183.46 Ma ABS 37.331 Ma
age207_206r_Pa 183.412 Ma ABS 37.333 Ma
age207_206r_Th 182.31 Ma ABS 37.343 Ma
age207_206r_ThPa 182.262 Ma ABS 37.344 Ma
age207_235r 205.259 Ma ABS 3.175 Ma
age207_235r_Pa 205.255 Ma ABS 3.175 Ma
bestAge 207.162 Ma ABS 0.348 Ma
percentDiscordance -12.91975

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 3.63206 ABS 0.0
rTh_Usample 0.16364 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 262.68826 ABS 0.0
r207_206s 0.04977 ABS 0.0
r235_207s 4.46367 ABS 0.0
r238_206s 30.62036 ABS 0.0
r238_207s 615.17572 ABS 0.0


Sample Name = SH24-020
Legacy = false
Fraction ID = z16
Grain ID = z16
Zircon = true
Time Stamp = March 31, 2026 3:56 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 0.00095 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 0.99234 PCT 0.00318
r270_265m 0.07709 PCT 0.00942
r270_267m 0.0765 PCT 0.00921
rTh_Umagma 3.5 ABS 0.5
tracerMassInGrams 0.0082 ABS 0.0001
uBlankMassInGrams 0.0 ABS 0.0

Measured Ratios
Name Value Uncertainty Type One Sigma
r204_205m 0.00039 PCT 0.63414
r206_204m 635.08465 PCT 0.6435
r206_205m 0.24793 PCT 0.0236
r206_207m 14.50114 PCT 0.09708
r206_208m 12.0648 PCT 0.10786
r207_204m 43.79719 PCT 0.64403
r207_205m 0.0171 PCT 0.09563
r208_204m 52.64348 PCT 0.65118
r208_205m 0.02055 PCT 0.10732
r233_235m 0.9963 PCT 0.00318
r238_233m 0.07709 PCT 0.00942
r238_235m 0.0768 PCT 0.00921

Radiogenic Isotope Ratios
Name Value Uncertainty Type One Sigma
r206_238r 0.03269 ABS 0.00002
r206_238r_Th 0.03271 ABS 0.00002
r207_206r 0.05 ABS 0.00027
r207_206r_Pa 0.05 ABS 0.00027
r207_206r_Th 0.04997 ABS 0.00027
r207_206r_ThPa 0.04997 ABS 0.00027
r207_235r 0.22525 ABS 0.0013
r207_235r_Pa 0.22525 ABS 0.0013
r208_206r 0.03457 ABS 0.0
rhoR206_238r__r207_235r 0.63277 ABS 0.0
rhoR206_238r__r207_235r_Pa 0.63277 ABS 0.0
rhoR206_238r_Th__r207_235r 0.63252 ABS 0.0
rhoR206_238r_Th__r207_235r_Pa 0.63251 ABS 0.0
rhoR207_206r__r238_206r -0.55401 ABS 0.0
rhoR207_206r_Pa__r238_206r -0.55401 ABS 0.0
rhoR207_206r_Th__r238_206r_Th -0.55379 ABS 0.0
rhoR207_206r_ThPa__r238_206r_Th -0.55379 ABS 0.0

Radiogenic Isotope Dates
Name Value Uncertainty Type One Sigma
age206_238r 207.354 Ma ABS 0.139 Ma
age206_238r_Th 207.457 Ma ABS 0.139 Ma
age207_206r 193.909 Ma ABS 12.47 Ma
age207_206r_Pa 193.861 Ma ABS 12.471 Ma
age207_206r_Th 192.744 Ma ABS 12.474 Ma
age207_206r_ThPa 192.696 Ma ABS 12.475 Ma
age207_235r 206.271 Ma ABS 1.077 Ma
age207_235r_Pa 206.267 Ma ABS 1.077 Ma
bestAge 207.354 Ma ABS 0.139 Ma
percentDiscordance -6.93381

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 11.79318 ABS 0.0
rTh_Usample 0.10905 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 823.69826 ABS 0.0
r207_206s 0.05 ABS 0.0
r235_207s 4.43949 ABS 0.0
r238_206s 30.59155 ABS 0.0
r238_207s 611.84327 ABS 0.0




filename:27983.xml
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