The analysis of amino acids in meteorites dates back over 50 years; however, it is only in recent years that research has expanded beyond investigations of a narrow set of meteorite groups (exemplified by the Murchison meteorite) into meteorites of other types and classes. These new studies have shown a wide diversity in the abundance and distribution of amino acids across carbonaceous chondrit...

A thin coating of desert varnish occurs on Forrest 009 and Nurina 004, both equilibrated ordinary chondrite (L6) finds from the Nullarbor Plain, Australia. This finely laminated deposit is chemically and petrographically comparable to the varnish found on terrestrial rocks. Forrest 009, which has a terrestrial age of 5.9 kyr, has a 100-130 μm thick coating of desert varnish that has a laterally...

The Pueblito de Allende meteorite contains only 0.1-0.5 ppm of solvent-extractable carbon, most or all of which is due to terrestrial contamination. Determinations of the total carbon content gives values from 0.23 to 0.35 per cent. The presumed indigenous insoluble carbon is thus present in a ratio of 2300:1 relative to contaminant carbon. A sample of the meteorite was extracted with a deutera...

Shock effects within meteorites are the products of impacts and collisions in the asteroid belt that eventually led to the ejection of the meteorite from its parent body. These collisions produce shock waves, which in turn lead to formation of high-pressure phases and deformation features within the host meteorite. The (P,T,t) history of the shock process can be deduced by studying these high-p...

Asteroids are the origin point for most meteorites impacting Earth. Terrestrial meteorite samples provide evidence of what actually occurred in early solar system at formation location meteorite, and when it occurred. The ability to connect a sample an asteroid parent body provides its starting as meteoroid. To date, only handful chondritic types have been credibly connected parent. For past tw...

0 Abstract: Automation of the search for and classification of Antarctic meteorites offers a unique case for early demonstration of robotics in a scenario analogous to geological exploratory missions to other planets and to the Earth’s extremes. Moreover, the discovery of new meteorite samples is of great value because meteorites are the only significant source of extraterrestrial material avai...

In a previous paper ' the writers suggested that some rexplosion structures currently attributed to volcanism may actually record impacts of giant meteorites which fell during the geological past. It is the purpose of this article to show how meteorite craters and th eir underlying structures might be preserved, and to evaluate the meteoritic hypothesis as an 'explanativn for three structures w...

Abstract Meteorites provide an important source of information about the formation and composition asteroids, because level accuracy studies analyses performed in a laboratory cannot be achieved by any ground or space based observation. To better understand what asteroid types meteorite represents, it is crucial to identify body they originated from. In this paper, we aim determine possible par...