Thermal and impact history of the H chondrite parent asteroid during metamorphism: Constraints from metallic Fe–Ni
نویسندگان
چکیده
منابع مشابه
Thermal constraints on the early history of the H-chondrite parent body reconsidered
Reconstructions of the early thermal history of the H-chondrite parent body have focused on two competing hypotheses. The first posits an undisturbed thermal evolution in which the degree of metamorphism increases with depth, yielding an “onion-shell” structure. The second posits an early fragmentation–reassembly event that interrupted this orderly cooling process. Here, we test these hypothese...
متن کاملHf–W thermochronometry: Closure temperature and constraints on the accretion and cooling history of the H chondrite parent body
Article history: We obtained Hf–W metalReceived 19 December 2007 Received in revised form 3 March 2008 Accepted 4 March 2008 Available online 15 March 2008 Editor: R.W. Carlson
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Grimm, W.F. Bottke, D. Durda, B. Enke, E.R.D. Scott, E. Asphaug, D. Richardson. Space Studies Department, Southwest Research Institute, 1050 Walnut St. #400, Boulder, CO 80302, [email protected]. Hawaii Institute of Geophysics and Planetology, University of Hawaii, Manoa. Earth Sciences Department, University of California, Santa Cruz. Department of Astronomy, University of Maryland, Colle...
متن کاملORIGIN AND THERMAL HISTORY OF FeNi - METAL IN PRIMITIVE CHONDRITES
M. I. Petaev, A. Meibom, C. Perron, and B. Zanda, Dept. of the Geophysical Sciences, University of Chicago (5734 S. Ellis Ave., Chicago, IL 60637 USA; [email protected]), Dept. of Earth and Planetary Sciences, Harvard University (20 Oxford St., Cambridge, MA 02138 USA; [email protected]), Dept. of Geological and Environmental Sciences, Stanford University (Building 320, Lomita Mall,...
متن کاملSulfidation Textures of FeNi Alloy in Unequilibrated Chondrites and Its Petrogenesis
A lot of troilite reaction rim textures formed through sulfidation of FeNi alloy of kamacite and taenite with sulfur rich gas have been identified especially in C03 unequilibrated carbonaceous chondrites. Troilite formation through sulfidation of FeNi alloy of kamacite and taenite with sulfur rich gas in the solar nebula is expected from the reaction kinetics as well as from the equilibrium con...
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ژورنال
عنوان ژورنال: Geochimica et Cosmochimica Acta
سال: 2014
ISSN: 0016-7037
DOI: 10.1016/j.gca.2014.03.038