Project

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From dust to planets: Initial assembly and early evolution of planetary bodies in the inner solar system

Applicant Kleine Thorsten
Number 123470
Funding scheme SNSF Professorships
Research institution Institut für Geochemie und Petrologie ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Geochemistry
Start/End 01.03.2009 - 30.09.2013
Approved amount 775'417.00
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All Disciplines (3)

Discipline
Geochemistry
Geochronology
Astronomy, Astrophysics and Space Sciences

Keywords (9)

Planet formation; Isotopes; Accretion; Differentiation; Short-lived nuclides; Moon; Chondrules; Core formation; Chondrites

Lay Summary (English)

Lead
Lay summary
This project will investigate the processes that led to the formation of planets from the solar nebula, a flattened disk of gas and dust orbiting the young Sun. One of the major aims is obtaining time constraints on several of the key processes in the formation of the first planetary objects, including the lifetime of dust in the solar nebula and its accretion to the first planetary objects, as well as the timescales of melting and differentiation of small planetary objects. The other major aim is to investigate the influence of the planet formation process on the chemical and isotopic composition of the Earth and Moon. Knowing this composition is fundamental to our understanding of the formation and long-term evolution of terrestrial planets, including the timescales of differentiation, the dynamcis of the mantle, and growth of the crust.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Isotopic evidence for chondritic Lu/Hf and Sm/Nd of the Moon
Sprung Peter, Kleine Thorsten, Scherer Erik E. (2013), Isotopic evidence for chondritic Lu/Hf and Sm/Nd of the Moon, in Earth and Planetary Science Letters, 380, 77-87.
Chronology of the angrite parent body and implications for core formation in protoplanets
Kleine T, Hans U, Irving AJ, Bourdon B (2012), Chronology of the angrite parent body and implications for core formation in protoplanets, in GEOCHIMICA ET COSMOCHIMICA ACTA, 84, 186-203.
Core formation and mantle differentiation on Mars
Mezger Klaus, Debaille Vinciane, Kleine Thorsten (2012), Core formation and mantle differentiation on Mars, in Space Science Reviews, 174(1-4), 27-48.
Hf-W chronometry of core formation in planetesimals inferred from weakly irradiated iron meteorites
Kruijer Thomas S., Sprung Peter, Kleine Thorsten, Leya Ingo, Burkhardt Christoph, Wieler Rainer (2012), Hf-W chronometry of core formation in planetesimals inferred from weakly irradiated iron meteorites, in Geochimica et Cosmochimica Acta, 99, 287-304.
Neutron capture on Pt isotopes in iron meteorites and the Hf-W chronology of core formation in planetesimals
Kruijer Thomas S., Fischer-Gödde Mario, Kleine Thorsten, Sprung Peter, Leya Ingo, Wieler Rainer (2012), Neutron capture on Pt isotopes in iron meteorites and the Hf-W chronology of core formation in planetesimals, in Earth and Planetary Science Letters, 361, 162-172.
Refractory element fractionation in the Allende meteorite: Implications for solar nebula condensation and the chondritic composition of planetary bodies
Stracke A, Palme H, Gellissen M, Munker C, Kleine T, Birbaum K, Gunther D, Bourdon B, Zipfel J (2012), Refractory element fractionation in the Allende meteorite: Implications for solar nebula condensation and the chondritic composition of planetary bodies, in GEOCHIMICA ET COSMOCHIMICA ACTA, 85, 114-141.
Thermal evolution and sintering of chondritic planetesimals
Henke S, Gail HP, Trieloff M, Schwarz WH, Kleine T (2012), Thermal evolution and sintering of chondritic planetesimals, in ASTRONOMY & ASTROPHYSICS, 537, A45-A45.
Thermal history modelling of the H chondrite parent body
Henke S., Gail Hans Peter, Trieloff Mario, Schwarz Winfried H., Kleine Thorsten (2012), Thermal history modelling of the H chondrite parent body, in Astronomy and Astrophysics, 545, A135.
Chronometry of Meteorites and the Formation of the Earth and Moon
Kleine T, Rudge JF (2011), Chronometry of Meteorites and the Formation of the Earth and Moon, in ELEMENTS, 7(1), 41-46.
Broad bounds on Earth's accretion and core formation constrained by geochemical models
Rudge JF, Kleine T, Bourdon B (2010), Broad bounds on Earth's accretion and core formation constrained by geochemical models, in NATURE GEOSCIENCE, 3(6), 439-443.
Tungsten isotopic evolution during late-stage accretion: Constraints on Earth-Moon equilibration
Nimmo F, O'Brien DP, Kleine T (2010), Tungsten isotopic evolution during late-stage accretion: Constraints on Earth-Moon equilibration, in EARTH AND PLANETARY SCIENCE LETTERS, 292(3-4), 363-370.
Abundance and isotopic composition of Cd in iron meteorites
Kruijer T.S., Sprung P., Kleine T., Leya I., Wieler R., Abundance and isotopic composition of Cd in iron meteorites, in Meteoritics and Planetary Science.

Awards

Title Year
Fellow of the Meteoritical Society 2012

Abstract

This project will investigate the processes that led to the formation of planets from a disk of gas and dust. One of the major aims is obtaining time constraints on several of the key processes in the formation of the first planetary objects, including chondrule formation, accretion of chondrite parent bodies, and melting and differentiation of planetesimals. The other major aim is to determine the initial isotopic composition of the Earth and Moon. This is fundamental to our understanding of the formation and long-term evolution of terrestrial planets, including the timescales of differentiation, the dynamcis of the mantle, and growth of the crust.
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