Carbonaceous chondrite (C2, ungrouped)
Tuesday, 25 August 2020, around 2:30 pm Moroccan time (GMT+1)
What makes Tarda an ungrouped chondrite is that its isotopic values do not compare to any established carbonaceous chondrite groups. Scientists pay attention to oxygen isotopes in meteorites because they tell us about the chemical and physical processes that occurred during the formation of the solar system.
Studying meteorites is like studying tree rings; their chemical makeup and physical properties give us a glimpse into the state of our solar system in its infancy, just as tree rings can tell us about the environment the tree was in at a particular point in time.