What universal mineral inclusion do achondrites like Aubrites lack due to parent body melting?
Answer
Chondrules
Aubrites belong to the achondrite group, which signifies that their parent bodies experienced significant thermal processing, specifically melting, after their initial formation. This melting process fundamentally altered their structure, leading to the absence of chondrules. Chondrules are defined as the universal, small, round mineral inclusions common in primitive meteorites, such as chondrites. The absence of these specific structures in aubrites provides key scientific data about the thermal history of their source body, differentiating them compositionally and structurally from less processed primitive rocks.
Related Questions
Which major compositional group is often cited as the rarest type encountered on Earth?How many other observed aubrite falls are known globally besides the 2024 BX1 event?What fraction of the approximately 1200 observed falls belong to the Carbonaceous Chondrite class?What primary components define Iron meteorites in the compositional spectrum?What substance characterizes Stony meteorites, placing them in the most common group?To which specific class does the Winchcombe meteorite, recovered in the UK in 2021, belong?Approximately how many in every 1,000 recognized meteorite finds originate from the Moon (Lunar meteorites)?What trait makes Lunar and Martian meteorites hard to distinguish from common Earth rocks?What universal mineral inclusion do achondrites like Aubrites lack due to parent body melting?What tell-tale sign of atmospheric transit is often lacking in rocks called "meteorwrongs"?