Analysis of events relevant to parent bodies and the formation of Shahdad chondrites

۵ pieces of meteorites (KM۴۷۰۰۲, KM۴۷۰۰۰, KM۴۷۰۰۸, KM۴۷۰۰۱) which have been classified in previous studies to them, these meteorites are and according ordinary meteorites, chondrites with petrological type H۱. In this study, it is attempted that the events which are occurred in the asteroid parent body (Eros) of these fragments, which form evidence in the minerals (opaque minerals, kamacite, taenite) sulfide phase, matrix, CAIs, rings and rims, exist to be expressed in isolation. In this regard, first, after field studies and researches, as well as using microscopic polarization and reflection studies, we looked at the formation of metal elements and phases. In this way, it can be achieved to simulate the thermal evolution of the early asteroid Eros and can reconstruct the thermal history. Using this information is beneficial because of possibly identification more accurate analysis of the processes affecting the formation of the asteroid, and it will also be much easier to answer the question that whether it was formed before the asteroid formation, and the chondrites have been hit by interplanetary suspended projectiles.

کلیدواژه ها:

Asteroid parent body ، Opaque mineral ، Matrix ، CAIs ، Asteroid thermal evolution