Universität zu Köln

Bischoff, Addi, Horstmann, Marian, Barrat, Jean-Alix ORCID: 0000-0003-3158-3109, Chaussidon, Marc, Pack, Andreas, Herwartz, Daniel ORCID: 0000-0003-3604-8295, Ward, Dustin, Vollmer, Christian and Decker, Stephan (2014). Trachyandesitic volcanism in the early Solar System. Proc. Natl. Acad. Sci. U. S. A., 111 (35). S. 12689 - 12693. WASHINGTON: NATL ACAD SCIENCES. ISSN 0027-8424

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Abstract

Volcanism is a substantial process during crustal growth on planetary bodies and well documented to have occurred in the early Solar System from the recognition of numerous basaltic meteorites. Considering the ureilite parent body (UPB), the compositions of magmas that formed a potential UPB crust and were complementary to the ultramafic ureilite mantle rocks are poorly constrained. Among the Almahata Sitta meteorites, a unique trachyandesite lava (with an oxygen isotope composition identical to that of common ureilites) documents the presence of volatile-and SiO2-rich magmas on the UPB. The magma was extracted at low degrees of disequilibrium partial melting of the UPB mantle. This trachyandesite extends the range of known ancient volcanic, crust-forming rocks and documents that volcanic rocks, similar in composition to trachyandesites on Earth, also formed on small planetary bodies similar to 4.56 billion years ago. It also extends the volcanic activity on the UPB by similar to 1 million years (Ma) and thus constrains the time of disruption of the body to later than 6.5 Ma after the formation of Ca-Al-rich inclusions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bischoff, Addi UNSPECIFIED UNSPECIFIED UNSPECIFIED Horstmann, Marian UNSPECIFIED UNSPECIFIED UNSPECIFIED Barrat, Jean-Alix UNSPECIFIED orcid.org/0000-0003-3158-3109 UNSPECIFIED Chaussidon, Marc UNSPECIFIED UNSPECIFIED UNSPECIFIED Pack, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Herwartz, Daniel UNSPECIFIED orcid.org/0000-0003-3604-8295 UNSPECIFIED Ward, Dustin UNSPECIFIED UNSPECIFIED UNSPECIFIED Vollmer, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Decker, Stephan UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-429018
DOI:	10.1073/pnas.1404799111
Journal or Publication Title:	Proc. Natl. Acad. Sci. U. S. A.
Volume:	111
Number:	35
Page Range:	S. 12689 - 12693
Date:	2014
Publisher:	NATL ACAD SCIENCES
Place of Publication:	WASHINGTON
ISSN:	0027-8424
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language UREILITE PARENT BODY; OXYGEN-ISOTOPE COMPOSITION; POLYMICT UREILITE; ALMAHATA SITTA; METEORITES; MELT; PETROLOGY; ACHONDRITES; MINERALOGY; EVOLUTION Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/42901