This sample belongs to: Gonzalo Ronda

Sample Details
Sample Name: TOR5
IGSN: IEGMR0018
Laboratory: Dalhousie Noble Gas
Analyst: Roman Kislytsin
Instrumental Method - He:
Instrumental Method Reference - He:
Instrumental Method - U-Th-Sm:
Instrumental Method Reference - U-Th-Sm:
Alpha Ejection Correction Method:
Alpha Ejection Correction Method Reference:
Mineral: ZIRCON
Comment:
238U Decay Constant: 1.55125E-10
238U Decay Constant Error:
235U Decay Constant: 9.84850E-10
235U Decay Constant Error:
232Th Decay Constant : 4.94750E-11
232Th Decay Constant Error:
230Th Decay Constant:
230Th Decay Constant Error:
238U/235U: 137.88
Decay Constant Reference: Steiger, R.H. and Jager, E., 1977, Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology. Earth and Planetary Science Letters, v. 36, no. 3, p. 359-362.
147Sm Decay Constant: 6.54E-12
147Sm Decay Constant Error:
147Sm Decay Constant Reference: Lugmair, G.W., and Marti, K., 1978, Lunar initial 143Nd/144Nd: differential evolution of the lunar crust and mantle: Earth and Planetary Science Letter, v. 39, p. 349-357.
Decay Constant Comment:

Sample Metadata
Sample ID: TOR5
Sample Description:
GeoObject Type: Grab
Geoobject Classification:
Collection Method: Manual
Material: Rock
Latitude: -47.79673
Longitude: -73.61788
Sample Comment:
Collector: Gonzalo Ronda
Material Classification:
Primary Location Name:
Primary Location Type:
Location Description:
Locality:
Locality Description:
Country:
Provice:
County:
City Or Township:
Platform:
Platform ID:
Original Archival Institution:
Original Archival Contact:
Most Recent Archival Institution: Universidad de Buenos Aires
Most Recent Archival Contact: gonzaloronda@gmail.com

Age(s)
Analysis Purpose Value Error Age Type MSWD Age Error Systematic Included Analyses Comment
Cooling 21.20 4.36 average age with standard error

Data Reduction Parameters
Spike Type U-Th-Sm:
Spike Type He:
Standard Mineral:
Standard Mineral Reference:
Standard True Age:
Standard True Age Error:
Standard Measured Age:
Standard Measured Age Error:
Data Reduction Comment:

Fraction(s)
Fraction Name Mineral Age, Ma err., Ma U (ppm) Th (ppm) 147Sm (ppm) Th/U He (nmol/g) Mass (ug) Ft
TOR5-1 Discarded for mean age
zTOR5-1 zircon 9.3481206893921 0.039515431970358 108.39966583252 91.509283447266 2.7180452346802 0.84418418400523 5.2283501625061 9.7300100326538 0.79761445522308
zTOR5-2 zircon 17.021369934082 0.072667121887207 181.33529663086 142.13287353516 4.4553203582764 0.78381250741544 14.922070503235 5.703456401825 0.75605827569962
zTOR5-3 zircon 23.563877105713 0.10334403067827 270.12200927734 170.31102294922 3.9596683502197 0.63049665373381 30.30154800415 7.4629030227661 0.7677686214447
zTOR5-4 zircon 26.129034042358 0.11582865566015 421.28558349609 237.30593261719 4.5103771209717 0.56328994371911 53.013805389404 10.760913848877 0.78749269247055
zTOR5-5 zircon 18.070858001709 0.078149773180485 58.301887512207 41.238366699219 1.7961902618408 0.70732472753278 5.3635077476501 13.11598110199 0.80836206674576
filename:26067.xml
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