Abstracts 2002

Washington University 

Abstracts of presentations from our group at various scientific conferences in 2002. All contributions are downloadable as PDF-files. For abstracts from other years, see the publications page.


33rd Lunar and Planetary Science Conference (LPSC), Houston, March 2002

NanoSIMS isotopic analysis of small presolar SiC grains from the Murchison and Indarch meteorites.
S. Amari, C. Jennings, A. Nguyen, F. J. Stadermann, E. Zinner, and R. S. Lewis

Spatially resolved analysis of amines using a fluorescence molecular probe: molecular analysis of IDPs.
S. J. Clemett, S. Messenger, K. L. Thomas-Keprta, S. J. Wentworth, G.-A. Robinson, and D. S. McKay

Coordinated isotopic and TEM studies of a supernova graphite.
K. Croat, T. Bernatowicz, F. J. Stadermann, S. Messenger, and S. Amari

Polytype distribution in presolar SiC: microstructural characterization by transmission electron microscopy.
T. L. Daulton, T. J. Bernatowicz, R. S. Lewis, S. Messenger, F. J. Stadermann, and S. Amari

Piecing together the Portales Valley chronology puzzle: clues to the origin of unusually young Sm-Nd Ages.
C. Floss, G. Crozaz, M. Liu and E. R. D. Scott

NanoSIMS measurements of nitrogen isotopic distributions in IDPs and Renazzo: uniform 15N enrichment in a chondritic IDP.
C. Floss and F. J. Stadermann

Relationships among chondrite groups as inferred from presolar-grain abundances.
G. R. Huss, A. P. Meshik, C. M. Hohenberg, and J. B. Smith

Indarch SiC by TIMS, RIMS, and NanoSIMS.
C. L. Jennings, M. R. Savina, S. Messenger, S. Amari, R. H. Nichols Jr., M. J. Pellin, and F. A. Podosek

Analysis of a deuterium hotspot in an interplanetary dust particle: implications for the carrier of hydrogen isotopic anomalies in IDPs.
L. P. Keller, S. Messenger, G. J. Flynn, S. Wirick and C. Jacobsen

Chromium isotopic composition of implanted solar wind from Apollo 16 lunar soils.
K. Kitts, F. A. Podosek, R. H. Nichols Jr., J. C. Brannon, J. Ramezani, R. Korotev and B. Joliff

Double beta decay of tellurium-130: current status.
A. P. Meshik, C. M. Hohenberg, O. V. Pravdivtseva, and T. J. Bernatowicz

Nanodiamond in colloidal suspension: electrophoresis; other observations.
A. P. Meshik, O. V. Pravdivtseva, and C. M. Hohenberg

Discovery of abundant interstellar silicates in cluster IDPs.
S. Messenger, L. P. Keller, and R. M. Walker

Trace elements in CI chondrites: a heterogeneous distribution.
A. Morlok, C. Floss, E. Zinner, A. Bischoff, T. Henkel, D. Rost, T. Stephan, and E. K. Jessberger

Excess 135-barium from live 135-cesium in Orgueil chemical separates.
R. H. Nichols Jr., J. C. Brannon, and F. A. Podosek

I-Xe dating: comparison of I-Xe and Pb-Pb ages of Richardton chondrules and separated mineral phases.
O. V. Pravdivtseva, Y. Amelin, C. M. Hohenberg, A. P. Meshik

Presolar graphite in the NanoSIMS: a detailed look at the isotopic makeup of the spherule and its sub-components.
F. J. Stadermann, T. Bernatowicz, T. K. Croat, E. Zinner, S. Messenger and S. Amari

Radiogenic 26Mg in Ste Marguerite and Forest Vale plagioclase: can 26Al be used as chronometer?
E. Zinner, P. Hoppe and G. Lugmair

Presolar spinel grains found in fine-grained residue from the Murray CM2 carbonaceous chondrite.
E. Zinner, S. Amari, and R. S. Lewis

MetSoc 65, Los Angeles, July 2002

Multi-element isotopic analysis of presolar graphite fraction KFA1 from the Murchison meteorite.
S. Amari, A. Nguyen, E. Zinner, and R. S. Lewis

Spatially resolved analysis of amines in interplanetary dust particles using fluorescent molecular probes.
S. J. Clemett, S. Messenger, L. P. Keller, K. L. Thomas-Kerpta, and D. S. McKay

Metallic iron condensed onto titanium carbides within supernova graphites.
T. K. Croat, T. J. Bernatowicz, S. Amari, S. Messenger, and F. J. Stadermann

Acapulcoite compexities: Clues from trace element distributions.
C. Floss

TOF-SIMS analysis of 13 presolar silicon carbide grains.
T. Henkel, T. Stephan, E. K. Jessberger, P. Hoppe, R. Strebel, S. Amari, E. K. Zinner, and R. S. Lewis

Organic characteristics of D-rich and D-poor cluster IDPs.
L. P. Keller, S. Messenger, G. J. Flynn, S. Wirick, and C. Jacobsen

Two-stage asteroidal alteration of the Allende dark inclustions.
A. N. Krot, C. M. Hohenberg, A. P. Meshik, O. V. Pravdivtseva, H. Hiyagon, M. I. Petaev, M. K. Weisberg, A. Meibom, and K. Keil

Carbon isotopic composition of organic matter in continental Cretaceous-Tertiary boundary sediments.
T. Maruoka, C. Koeberl, and B. F. Bohor

Oxygen isotopic analyses of crystalline silicates and oxides in interplanetary dust.
S. Messenger and L. P. Keller

Spallogenic chromium in the solar wind.
R. H. Nichols Jr., K. Kitts and F. A. Podosek

C, N, Si, Fe, Sr, Zr, Mo and Ba isotopic analyses of type X Murchison SiC grains: experimental evidence for a new type of stellar nucleosynthesis in supernovae.
M. J. Pellin, M. R. Savina, E. Tripa, W. F. Calaway, A. M. Davis, R. S. Lewis, S. Amari and R. N. Clayton

NanoSIMS isotopic measurements of individual TiC crystals in a single presolar graphite grain.
F. J. Stadermann, T. Bernatowicz, T. K. Croat, E. Zinner, S. Messenger, and S. Amari

A glass inclusion in olivine and mesostasis glass of a Kaba (CV3) aggregate are sisters.
M. E. Varela, G. Kurat and E. Zinner

Trace element abundances in minerals of two new and distinct basaltic shergottites, NWA 856 and NWA 1068.
M. Wadhwa and G. Crozaz

Abundances and oxygen isotopic compositions of presolar spinel grains.
E. Zinner, A. Amari, R. Guinness, A. Nguyen, and R. S. Lewis

12th Annual VM Goldschmidt Conference, Davos, August 2002

Chemical alteration of hot and cold desert meteorites.
G. Crozaz, C. Floss, and M. Wadhwa

Multielement analyses of single presolar SiC grains from supernovae.
A. M. Davis, M. J. Pellin, C. E. Tripa, M. R. Savina, R. S. Lewis, R. N. Clayton, and S. Amari

Various graphite morphologies with a diversity of C- and N-isotopic signatures in the highly equilibrated Acapulco meteorite.
A. El Goresy, E. Zinner, P. Pellas, and C. Caillet

I-Xe ages and trapped Xe compositions.
C. M. Hohenberg, O. V. Pravdivtseva, and A. P. Meshik

Megascale isotopic anomaly in Cr?
K. Kitts, R. H. Nichols Jr., and F. A. Podosek

I-Xe and Pb-Pb ages of Richardton chondrules.
O. V. Pravdivtseva, Y. Amelin, C. M. Hohenberg, and A. P. Meshik

Geochemical measurements of 130Te halflife: present status.
A. P. Meshik, C. M. Hohenberg, O. V. Pravdivtseva, and T. J. Bernatowicz

Isotopic and elemental studies at a 50 nm scale with the NanoSIMS.
F. J. Stadermann

Isotopic compositions of small presolar dust grains.
E. Zinner, S. Amari, R. Guinness, A. Nguyen, and F. J. Stadermann

Other

Lugaro M., Gallino R., Zinner E., Amari S., and Nittler L. R. (2002)
The effect of heterogeneities in the interstellar medium on the CNO isotopic ratios.
Nuclei in the Cosmos VII, Abstracts and Contributed Papers, 76.

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