Meteoritical History of the Solar System

AI Thread Summary
The discussion focuses on creating a chronological timeline of solid formation in the solar system, detailing key events and corresponding meteorite examples. It outlines the condensation of the first solids, the formation of chondrules and minor planets, and the impact of collisions leading to primitive achondrites. The timeline progresses through the differentiation of large asteroids, accretion into planetesimals, and the formation of rocky planets and their satellites. A clarification is sought on the correctness of the order presented, with a note on the Shergottite Age Paradox highlighting the complexities in understanding Mars's geological history. The conversation emphasizes the importance of consulting professional literature for accurate timelines and potential controversies.
connorp
Messages
30
Reaction score
2
I'm trying to create a chronological timeline of the formation of solids in the solar system with examples of meteorites for each step. Let me know if this order looks right.

First solids condense in the solar nebula (Calcium aluminum inclusions in carbonaceous chrondrites).

Chondrules rapidly form and begin to gravitational attract each other, forming the first minor planets (petrological type 3 chondrites).

Collisions of minor planets became more frequent as more formed and they got larger. Primitive achondrites were formed as a results of increased internal heating (due to larger bodies) and external heating from collisions.

Large asteroids become geologically differentiated (iron meteorites).

Asteroids accrete to form planetesimals (HED achondrites from 4 Vesta).

Rocky planets begin to form (shergottites and some Earth rock).

Planetary satellites are formed or captured (lunar breccia).

Does this look correct?
 
Astronomy news on Phys.org
I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?
 
Not really. All I really need clarification on is if the order is correct. Those are the only major events possible to include and the example specimens are definitely correct for each step. So just whether the order is right, which I suspect it is.
 
I think that you might want to list whatever sources that you are using. Review articles in the professional literature are often a good place to look. You may find various controversies about the ages of various objects. That's a natural part of cutting-edge research, and you ought to note that.

As to shergottites, they are not primordial. In fact, there is something called the Shergottite Age Paradox. Shergottites are about 180 million years old, but most of Mars's geological activity is much older than that. Are we lucky in getting lots of fragments from an impact event on some young rock?
 
TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
Thread 'Could gamma-ray bursts have an intragalactic origin?'
This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...
Back
Top