Astrewn field is the area wheremeteorites from a singlefall are dispersed.^[1]It is also often used for the area containingtektites produced by a large meteorite impact.^[2]

This section includes a list ofgeneral references, butit lacks sufficient correspondinginline citations. Please help toimprove this section byintroducing more precise citations.(March 2024) (Learn how and when to remove this message)

There are two strewnfield formation mechanisms:

1. Mid-air fragmentation: when a largemeteoroid enters theatmosphere it often fragments into many pieces before touching the ground due to thermal shock. This mid-air explosion disperses material over a large oval-shaped area. The long axis of this oval is along the flight path of the meteoroid. When multiple-explosions occur, the material can be found in several overlapping ovals.
2. Impact fragmentation: when there is almost no mid-air fragmentation the fragmentation can occur upon impact. In this case the strewnfield shape can be different, usually circular. Examples include the strewn fields of theCanyon Diablo meteorite which formedMeteor Crater in Arizona, and theAustralasian strewnfield.

This section includes a list ofgeneral references, butit lacks sufficient correspondinginline citations. Please help toimprove this section byintroducing more precise citations.(March 2024) (Learn how and when to remove this message)

In the case of mid-air fragmentation, smaller fragments tend to fall shorter and the biggest fragments are usually found at the far end of the oval. In order to get an idea of the original flight direction it is necessary to analyze the size pattern of the material over the strewnfield. Fragments of about 1 to 5 grams can be picked up onweather radar as they fall atterminal velocity.

• Glossary of meteoritics

• Strewn field
• Meteorite falls

• Articles with short description
• Short description is different from Wikidata
• Articles lacking in-text citations from March 2024
• All articles lacking in-text citations