▪ Abstract Chondrules are∼ 1-mm igneous droplets in primitive meteorites, and their
abundance suggests widespread melting in the protoplanetary disk. Chondrules with relict …

The petrologic and geochemical properties of chondrules as well as results of experimental
studies provide strong constraints on chondrule-formation models. Nebular formation is …

Meteorite research is fundamental to our understanding of the origin and early history of the
Solar System. This book considers the mechanism and timing of core formation and basaltic …

(Clark, 1924; sixth edition, edited by Fleischer, 1963-1979), Geochemistry (Goldschmidt,
1954), Geochemistry (Rankama and Sahama, 1950), and Handbook of Geochemistry …

We have studied shock effects in carbonaceous chondrites using optical microscopy of thin
sections and find that our petrographic classification of progressive shock metamorphism in …

The petrology of type II porphyritic olivine chondrules in Semarkona (LL3. 0) has been
studied in detail. Olivines in these chondrules are euhedral, Fe-richand are strongly zoned …

The 26Al–26Mg systems of five ferromagnesian chondrules from the least metamorphosed
ordinary chondrite Semarkona (LL3. 0) were studied using a secondary ion mass …

Chondrules from different chondrite groups show characteristic properties, including
abundances of different chondrule textural types, chondrule sizes, oxygen isotope …

CI chondrites have nonvolatile chemical compositions closely resembling that of the Sun's
photosphere and are thus considered to have the most primitive compositions of all known …

The CI chondrites are taken to represent average solar system material based on the
similarity of their elemental compositions to that of the solar photosphere. However, their …