Welcome to John Wasson's home page

at the

Institute of Geophysics and Planetary Physics, UCLA

Flint Creek 

I. Recent teaching

a ) Geochemistry (Dept. of Earth and Space Sciences)

b) Environmental chemistry (Dept. of Chemistry and Biochemistry)

c) Various graduate student colloquia

II.  Research goals

a) To analyze primitive chondritic meteorites to obtain data relevant to (a) the formation of the solar nebula from presolar materials, (b) the nebular formation of dust and chondrules, (c) the nebular agglomeration of planetesimals, and (d) the accretion of asteroids and planets.

b)  To use studies of chondrites to assess the compaction of primitive asteroids and the alteration of chondritic asteroids by impact heating and by aqueous alteration

c) To model the igneous and related processes that produced the iron meteorites

d) To accumulate observations that lead to a better understanding of the products on major impact processes on Earth (e.g., tektites, impact boundary sediments).

Flint Creek, Arkansas

III.        Publications

            A. Journal Publications: more than 260 articles.

            B. Books

                  Meteorites:  Classification and Properties, Springer, 316 pp. (1974).

                  Meteorites.  Their Record of Early Solar System History, Freeman, 267 pp. (1985).

            C.  A few recent papers:

Wasson J. T. and Hoppe P. (2012) Co/Ni ratios at taenite/kamacite interfaces and relative cooling rates in iron meteorites. Geochim. Cosmochim. Acta 84, 508-524

Wasson J. T. (2011) Relationship between iron-meteorite composition and size: Compositional distribution of irons from North Africa. Geochim. Cosmochim. Acta 75, 1757-1772.

Wasson J. T. and Rubin A. E. (2010) Matrix and whole-rock fractionations in the Acfer 094 type-3.0 ungrouped carbonaceous chondrite. Meteorit. Planet. Sci. 45, 73-90.

De Leuw S., Rubin A. E., Schmitt A. K. and Wasson J. T. (2010) 53Mn-53Cr systematics of carbonates in CM chondrites: Implications for the timing and duration of aqueous alteration. Geochim. Cosmochim. Acta 74, 7433-7442.

Wasson J. T. and Rubin A. E.. (2009) Composition of matrix in the CR chondrite LAP 02342. Geochim. Cosmochim. Acta  73, 1436-1460.

Wasson J. T. (2008)  Evaporation of nebular fines during chondrule formation. Icarus 195, 895-907.

Kunihiro T., Rubin A. E., McKeegan K. and Wasson J. T. (2004) Initial 26Al/27Al in carbonaceous-chondrite chondrules: Too little 26Al to melt asteroids. Geochim. Cosmochim. Acta 68, 2947-2957.

Wasson J. T. (2003) Large aerial bursts; an important class of terrestrial accretionary events. Astrobiology 3, 163-179.

IV.  Other activities

a) Tennis

b) The ecology and preservation of Flint Creek, Springtown, Arkansas (see image above)


Some Other Recent Publications

Choe W. H., Huber H., Rubin A. E., Kallemeyn G. W. and Wasson J. T. (2010) Compositions and taxonomy of 15 unusual carbonaceous chondrites. Meteorit. Planet. Sci. 45, 531-554.

De Leuw S., Rubin A. E. and Wasson J. T. (2010) Carbonates in CM chondrites: Complex formational histories and comparison to carbonates in CI chondrites. Meteorit. Planet. Sci. 45, 513-530.

Wasson J. T. and Rubin A. E. (2010) Matrix and whole-rock fractionations in the Acfer 094 type-3.0 ungrouped carbonaceous chondrite. Meteorit. Planet. Sci. 45, 73-90.

Wasson J. T. and Rubin A. E. (2010) Metal in CR chondrites. Geochim. Cosmochim. Acta 74, 2212-2230.

Rubin A. E., Griset C. D., Choi B.-G. and Wasson J. T. (2009) Clastic matrix in EH3 chondrites. Meteorit. Planet. Sci. 44, 589-601.

Wasson J. T. and Choe W.-H. (2009) The IIG iron meteorites: probable formation in the IIAB core. Geochim. Cosmochim. Acta 73, 4879-4890.

Rubin A. E., Huber H. and Wasson J. T. (2009) Possible impact-induced refractory-lithophile fractionations in EL chondrites. Geochim. Cosmochim. Acta 73, 1523-1537.

Contact Information

    John T. Wasson

    Institute of Geophysics and Planetary Physics

   

    University of California

    Los Angeles, CA 90095-1567

       Telephone         310-825-1986

       FAX                 310-206-3051

       Email            jtwasson@ucla.edu

 

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