The thallium isotope composition of carbonaceous chondrites — New evidence for live 205Pb in the early solar system

Baker, R. G. A.; Schönbächler, Maria; Rehkämper, Mark; Williams, Helen M.; Halliday, Alex N.

doi:10.1016/j.epsl.2009.12.044

Cited by 55 publications

(74 citation statements)

References 54 publications

(1 reference statement)

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“…Data for carbonaceous chondrites are shown for comparison (Baker et al. ). The hashed lines denote the CI chondritic reference lines defined by Cd/Tl = 4.755, Pb/Tl = 17.69, and Pb/Cd = 3.721 (Palme and Jones ).…”

Section: Resultsmentioning

confidence: 99%

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Palk

Andreasen

Rehkämper

et al. 2017

Meteorit & Planetary Scien

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Abstract-New Tl, Pb, and Cd concentration and Tl, Pb isotope data are presented for enstatite as well as L-and LL-type ordinary chondrites, with additional Cd stable isotope results for the former. All three chondrite suites have Tl and Cd contents that vary by more than 1-2 orders of magnitude but Pb concentrations are more uniform, as a result of terrestrial Pb contamination. Model calculations based on Pb isotope compositions indicate that for more than half of the samples, more than 50% of the measured Pb contents are due to addition of modern terrestrial Pb. In part, this is responsible for the relatively young and imprecise Pb-Pb ages determined for EH, L, and LL chondrites, which are hence only of limited chronological utility. In contrast, four particularly pristine EL chondrites define a precise Pb-Pb cooling age of 4559 AE 6 Ma.

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Section: Resultsmentioning

confidence: 99%

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Palk

Andreasen

Rehkämper

et al. 2017

Meteorit & Planetary Scien

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“…Nielsen et al (2006) used the 129 I-129 Xe age of silicate inclusions in group IAB iron meteorites to calculate an early solar system 205 Pb/ 204 Pb value of (1.0-2.1) Â 10 À4 . Baker et al (2010) investigated the 205 Pb-205 Tl system in bulk carbonaceous chondrites. They found a good correlation between 205 Tl/ 203 Tl and 204 Pb/ 203 Tl ratios (Figure 9), consistent with an initial solar system 205 Pb/ 204 Pb value of (1.0 AE 0.4) Â 10 À3 , significantly higher than the previous value of Nielsen et al (2006).…”

Section: Iodine-129mentioning

confidence: 99%

Short-Lived Radionuclides and Early Solar System Chronology

Davis

McKeegan

2014

Treatise on Geochemistry

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“…Following the initial discovery for live 26 Al in an Allende CAI by Lee et al (1976), it is now firmly established that Adapted from Wasserburg et al (1994), Birk (2004), Wadhwa et al (2007) and Baker et al (2007). 26 Al was widespread and apparently homogenously distributed within the inner Solar System.…”

Section: Meteoritic Evidencementioning

confidence: 99%

Injection mechanisms of short-lived radionuclides and their homogenization

Ouellette¹,

Desch²,

Bizzarro³

et al. 2009

Geochimica et Cosmochimica Acta

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The thallium isotope composition of carbonaceous chondrites — New evidence for live 205Pb in the early solar system

Cited by 55 publications

References 54 publications

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Short-Lived Radionuclides and Early Solar System Chronology

Injection mechanisms of short-lived radionuclides and their homogenization

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The thallium isotope composition of carbonaceous chondrites — New evidence for live 205Pb in the early solar system

Cited by 55 publications

References 54 publications

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct 205Pb

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct 205Pb

Short-Lived Radionuclides and Early Solar System Chronology

Injection mechanisms of short-lived radionuclides and their homogenization

Contact Info

Product

Resources

About

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb