418 citations
- Columbia UniversityUS83 papers
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14 papers · 1 filter
Abundance, Sizes, and Major Element Compositions of Components in CR and LL Chondrites: Formation from Single Reservoirs
Denton S. Ebel, Marina E. Gemma, Samuel P. Alpert +3
Abundances, apparent sizes, and individual chemical compositions of chondrules, refractory inclusions, other objects and surrounding matrix have been determined for Semarkona (LL3.…
Equilibrium Condensation from Chondritic Porous IDP Enriched Vapor: Implications for Mercury and Enstatite Chondrite Origins
Denton S. Ebel, Conel M. O'D. Alexander
The origin of Mercury's anomalous core and low FeO surface mineralogy are outstanding questions in planetary science. Mercury's composition may result from cosmochemical controls o…
Properties of Original Impactors Estimated from Three-Dimensional Analysis of Whole Stardust Tracks
Michael Greenberg, Denton S. Ebel
The Stardust mission captured comet Wild 2 particles in aerogel at 6.1 km/sec. We performed high resolution three-dimensional imaging and X-ray fluorescence mapping of whole cometa…
Thermochemical Stability of Low-Iron, Manganese-Enriched Olivine in Astrophysical Environments
Denton S. Ebel, Michael K. Weisberg, John R. Beckett
Low-iron, manganese-enriched (LIME) olivine grains are found in cometary samples returned by the Stardust mission to comet 81P/Wild 2. Similar grains are found in primitive meteori…
Experimental Investigation of Condensation Predictions for Dust-Enriched Systems
Gokce Ustunisik, Denton S. Ebel, David Walker +1
Condensation models describe the equilibrium distribution of elements between coexisting mineral solid solutions, silicate liquid, and vapor in a closed chemical system, vapor phas…
Abundance, Major Element Composition and Size of Components and Matrix in CV, CO and Acfer 094 Chondrites
Denton S. Ebel, Chelsea Brunner, Kevin Konrad +7
The relative abundances and chemical compositions of the macroscopic components or "inclusions" (chondrules and refractory inclusions) and fine-grained mineral matrix in chondritic…