Evidence for 182Hf in the early Solar System and constraints on the timescale of terrestrial accretion and core formation

Autor:	Stein B. Jacobsen, C. L. Harper
Rok vydání:	1996
Předmět:	Isochron chemistry.chemical_compound Solar System Supernova Radiogenic nuclide chemistry Meteorite Geochemistry and Petrology Astrophysics Iron meteorite Silicate Geology Mantle (geology)
Zdroj:	Geochimica et Cosmochimica Acta. 60:1131-1153
ISSN:	0016-7037
Popis:	We present evidence from tungsten (W) isotopic measurements consistent with the presence of live 182Hf (T1/2 = 9 Ma) in the early solar system. This is based on the observation of a well-resolved deficit of about four parts in ten thousand in the ratio 182W/183W in W separated from the Toluca iron meteorite. This deficit is interpreted as an excess in the terrestrial standard composition due to radiogenic growth of 182W. If the initial 182Hf/180Hf ratio in the solar system is
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dc0981a260166a821b702fc8b3897b7d https://doi.org/10.1016/0016-7037(96)00027-0 Zobrazit plný text záznamu Full Text from ScienceDirect