La piattaforma MAP comprende società specifiche e organi scientifici provenienti dalle discipline di matematica, di astronomia e di fisica. Sostiene le attività di queste organizzazioni e coordina e promuove la ricerca e la formazione in matematica, astronomia e fisica.

Immagine: ESO

Scientists have identified a completely new type of meteorite

Dr Schmitz' team has recovered more than a hundred of these "fossil" objects in the quarry. But the new meteorite stands out because geochemically its oxygen and chromium signatures are distinct.

The meteorite is 8 × 6.5 × 2 cm large. It is surrounded by a grey reduction halo, in the otherwise red limestone. Oxygen was consumed when the meteorite weathered on the sea floor. The coin in the image has a diameter of 2.5 cm
Immagine: B. Schmitz et al.

Dating suggests the meteorite's parent body was involved in a huge collision in the asteroid belt between Mars and Jupiter some 470 million years ago. This would have been the same smash-up that produced a large class of other rocks known as L chondrites, Birger Schmitz and colleagues tell the journal Nature Communications.

Categorie

  • Ordoviciano
  • Terra