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Geochimica et Cosmochimica Acta, ISSN 0016-7037, 05/2019, Volume 253, pp. 111 - 126
The Al- Mg ages of FeO-rich (type II) chondrules from Acfer 094, one of the least thermally metamorphosed carbonaceous chondrites, were determined by SIMS... 
Al-26-Mg-26 systematics | Acfer 094 | chondrule formation ages | SIMS
Journal Article
Geochimica et Cosmochimica Acta, ISSN 0016-7037, 05/2019, Volume 253, pp. 111 - 126
The Al- Mg ages of FeO-rich (type II) chondrules from Acfer 094, one of the least thermally metamorphosed carbonaceous chondrites, were determined by SIMS... 
Al-26-Mg-26 systematics | SIMS | Acfer 094 | chondrule formation ages
Journal Article
GEOCHIMICA ET COSMOCHIMICA ACTA, ISSN 0016-7037, 01/2019, Volume 244, pp. 416 - 436
Chondrules from unequilibrated ordinary and carbonaceous chondrites belong to the oldest and most primitive materials from the early solar system and record... 
CV CHONDRITES | Unequilibrated ordinary chondrites | INITIAL AL-26/AL-27 | Chondrule formation | GEOCHEMISTRY & GEOPHYSICS | AL-26-MG-26 SYSTEMATICS | CONTEMPORANEOUS FORMATION | ORIGIN | InitialAl/ Al | MELTING EVENTS | ACCRETION | SIMS | SOLAR-SYSTEM | Al-26-Mg-26 chronology | II CHONDRULES | ISOTOPIC COMPOSITION | Early solar system chronology
Journal Article
SCIENCE, ISSN 0036-8075, 08/2009, Volume 325, Issue 5943, pp. 985 - 988
The timing of the formation of the first solids in the solar system remains poorly constrained. Micrometer-scale, high-precision magnesium (Mg) isotopic... 
CHONDRITES | ORIGIN | REFRACTORY INCLUSIONS | MULTIDISCIPLINARY SCIENCES | FERROMAGNESIAN CHONDRULES | CONSTRAINTS | CONDENSATION | AL-26-MG-26 | NEBULA | INITIAL AL-26/AL-27 | MAGNESIAN CHONDRULES
Journal Article
Journal of Analytical Atomic Spectrometry, ISSN 0267-9477, 03/2011, Volume 26, Issue 3, pp. 565 - 577
We report novel methods for the chemical purification of Mg from silicate rocks by ion-exchange chromatography, and high-precision analysis of Mg-isotopes by... 
MAGNESIUM | ELEMENTS | CHEMISTRY, ANALYTICAL | FRACTIONATION | EXCHANGE BEHAVIOR | SPECTROSCOPY | CHONDRULES | DISTRIBUTION COEFFICIENTS | HYDROCHLORIC-ACID | AL-26-MG-26 | ALLENDE
Journal Article
EARTH AND PLANETARY SCIENCE LETTERS, ISSN 0012-821X, 06/2015, Volume 420, pp. 45 - 54
The mechanisms and timescales of accretion of 10-1000 km sized planetesimals, the building blocks of planets, are not yet well understood. With planetesimal... 
CHONDRITES | ISOTOPE HETEROGENEITY | AL-26-MG-26 | METEORITES | PLANETESIMALS | GEOCHEMISTRY & GEOPHYSICS | angrite meteorites | planetesimal accretion | Pb-Pb dating | CORE FORMATION | initial Al-26 abundance | ANGRITE PARENT BODY | DIFFERENTIATION | DISK | AGE
Journal Article
GEOCHIMICA ET COSMOCHIMICA ACTA, ISSN 0016-7037, 03/2017, Volume 201, pp. 275 - 302
We report on the mineralogy, petrography, and in situ measured oxygen-and magnesium-isotope compositions of eight porphyritic chondrules (seven FeO-poor and... 
Al-26 | Accretion | CR chondrite | SHORT-LIVED BE-10 | O-ISOTOPE COMPOSITION | Oxygen isotopes | ABSOLUTE CHRONOLOGY | HETEROGENEOUS DISTRIBUTION | GEOCHEMISTRY & GEOPHYSICS | AL-26-MG-26 SYSTEMATICS | EARLY SOLAR-SYSTEM | CARBONACEOUS CHONDRITES | ALUMINUM-RICH INCLUSIONS | Chronology | Renazzo | II CHONDRULES | Chondrule | ALLENDE
Journal Article
Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, 6/2012, Volume 109, Issue 24, pp. 9299 - 9303
Events occurring within the first 10 million years of the Solar System's approximately 4.5 billion-year history, such as formation of the first solids,... 
Terrestrial planets | Radionuclides | Ratios | Pyroxenes | Meteorites | Uranium | Solar systems | Planetary science | Isotopes | Chronometers | Geochronology | Anchor | geochronology | INCLUSIONS | MULTIDISCIPLINARY SCIENCES | anchor | U-238/U-235 | AL-26-MG-26 | AGES | Composition | Cosmic physics | Chemical properties | Research | Identification and classification | Physical Sciences
Journal Article
Meteoritics & Planetary Science, ISSN 1086-9379, 07/2012, Volume 47, Issue 7, pp. 1108 - 1119
– We review the 26Al ages of chondrules in various type 3.0 chondrites. The 26Al ages of chondrules are 1–3 Myr after calcium‐aluminum‐rich inclusion (CAI) for... 
GEOCHEMISTRY & GEOPHYSICS | AL-26-MG-26 SYSTEMATICS | AL-26 | CHONDRITES | SEMARKONA | EARLY SOLAR-SYSTEM | HIGH-TEMPERATURE | NEBULA | STRONTIUM DIFFUSION | INITIAL AL-26/AL-27 | MAGNESIAN CHONDRULES | Reservoirs | Chronologies | Meteorites | Protoplanetary disks | Isotopes
Journal Article
GEOCHIMICA ET COSMOCHIMICA ACTA, ISSN 0016-7037, 05/2019, Volume 253, pp. 111 - 126
The Al-26-Mg-26 ages of FeO-rich (type II) chondrules from Acfer 094, one of the least thermally metamorphosed carbonaceous chondrites, were determined by SIMS... 
Acfer 094 | CRYSTALLINE SILICATES | INCLUSIONS | INITIAL AL-26/AL-27 | COMET WILD 2 | GEOCHEMISTRY & GEOPHYSICS | AL-26 | Al-26-Mg-26 systematics | CARBONACEOUS-CHONDRITE | chondrule formation ages | SOLAR NEBULA | CONSTRAINTS | SIMS | DIFFUSION | DURATION
Journal Article
Geochimica et Cosmochimica Acta, ISSN 0016-7037, 03/2017, Volume 201, pp. 83 - 102
Fluffy Type A Ca–Al-rich inclusions (CAIs) containing reversely zoned melilite crystals are suggested to be aggregates of direct condensates from solar nebular... 
SYSTEM | GEOCHEMISTRY & GEOPHYSICS | ALLENDE METEORITE | EVAPORATION | FRACTIONATION | REFRACTORY INCLUSIONS | MELILITE CRYSTALS | CARBONACEOUS CHONDRITES | AL-26-MG-26 | ALUMINUM-RICH INCLUSIONS | NEBULA GAS | Spinel group | Chronologies | Solar system | Analysis
Journal Article
Meteoritics & Planetary Science, ISSN 1086-9379, 12/2012, Volume 47, Issue 12, pp. 1980 - 1997
– There is variability in the Mg isotopic composition that is a reflection of the widespread heterogeneity in the isotopic composition of the elements in the... 
OXYGEN | GEOCHEMISTRY & GEOPHYSICS | AL-26-MG-26 SYSTEMATICS | AL-26 | ORIGIN | REFRACTORY INCLUSIONS | ANOMALIES | CHONDRULES | CONSTRAINTS | ALLENDE INCLUSIONS | UNIFORM-DISTRIBUTION | Clouds | Solar system
Journal Article
Meteoritics & Planetary Science, ISSN 1086-9379, 08/2013, Volume 48, Issue 8, pp. 1383 - 1400
High‐precision bulk aluminum‐magnesium isotope measurements of calcium‐aluminum‐rich inclusions (CAIs) from CV carbonaceous chondrites in several laboratories... 
HETEROGENEOUS DISTRIBUTION | GEOCHEMISTRY & GEOPHYSICS | AL-26-MG-26 SYSTEMATICS | CA,AL-RICH INCLUSIONS | ALLENDE METEORITE | CARBONACEOUS-CHONDRITE | CONTEMPORANEOUS FORMATION | PROTOPLANETARY DISKS | REFRACTORY INCLUSIONS | ALUMINUM-RICH INCLUSIONS | INITIAL AL-26/AL-27 | Solar system
Journal Article
EARTH AND PLANETARY SCIENCE LETTERS, ISSN 0012-821X, 06/2018, Volume 491, pp. 238 - 243
The Allende CAI USNM 3898 is the basis for "ALL", the lowest measured initial Sr-87/Sr-86 value in any solar system material including other CAN (Gray et al.,... 
GEOCHEMISTRY & GEOPHYSICS | ALLENDE METEORITE | EVAPORATION | CHONDRITES | early Solar System chronology | FRACTIONATION | REFRACTORY INCLUSIONS | AL-26-MG-26 | CAI | RICH INCLUSIONS | NEBULA | initial AI/AI
Journal Article
Geochimica et Cosmochimica Acta, ISSN 0016-7037, 01/2018, Volume 221, pp. 318 - 341
TS34 is a Type B1 Ca-Al-rich inclusion (CAI) from the Allende CV3 chondrite, consisting of spinel, melilite, Ti-Al-rich clinopyroxene (fassaite) and minor... 
Al–Mg systematics | Ca-Al-rich inclusions | SIMS | Solar nebula | Oxygen isotopes | CRYSTALLIZATION SEQUENCES | SPINEL | SELF-DIFFUSION | REFRACTORY INCLUSIONS | Al-Mg systematics | AL-26-MG-26 | FASSAITE | GEOCHEMISTRY & GEOPHYSICS | EARLY SOLAR-SYSTEM | MELILITE CRYSTALS | NEBULA | Spinel group | Meteorites
Journal Article
GEOCHIMICA ET COSMOCHIMICA ACTA, ISSN 0016-7037, 09/2017, Volume 213, pp. 593 - 617
Angrites are differentiated meteorites that formed between 4 and 11 Myr after Solar System formation, when several short-lived nuclides (e.g., Al-26-Mg-26,... 
RUTHERFORD BACKSCATTERING | Angrites | FE-MG INTERDIFFUSION | AL-26-MG-26 | METEORITES | Short-lived chronometers | GEOCHEMISTRY & GEOPHYSICS | PB-PB AGE | DIFFUSION KINETICS | U stable isotope fractionation | EARLY SOLAR-SYSTEM | U stable isotopes | CLINOPYROXENE | Pb-Pb ages
Journal Article
EARTH AND PLANETARY SCIENCE LETTERS, ISSN 0012-821X, 04/2019, Volume 511, pp. 25 - 35
Al-Mg mineral isochrons of three Ca-Al-rich inclusions (CAIs) that formed primarily by condensation, one fine-grained, spinel-rich inclusion and two fluffy... 
secondary ion mass spectrometry | SYSTEM | Ca-Al-rich inclusions | FRACTIONATION | REFRACTORY INCLUSIONS | Al-Mg systematics | AL-26-MG-26 | early Solar System | OXYGEN | GEOCHEMISTRY & GEOPHYSICS | SOLAR NEBULA | MELILITE CRYSTALS | CONDENSATION | ISOTOPIC COMPOSITION | ALLENDE
Journal Article
Journal of Analytical Atomic Spectrometry, ISSN 0267-9477, 12/2012, Volume 28, Issue 1, pp. 67 - 76
The possibility of establishing an accurate relative chronology of the early solar system events based on the decay of short-lived 26 Al to 26 Mg (half-life of... 
AL-26 | CHEMISTRY, ANALYTICAL | ORIGIN | FRACTIONATION | INCLUSIONS | SPECTROSCOPY | AL-26-MG-26 | SOLAR-SYSTEM | AGES | MAGNESIAN CHONDRULES | ALLENDE
Journal Article