Strewn Field

Area on the surface containing meteorites and fragments from a single fall. Also applied to the area covered by tektites, which are produced by large meteorite impacts. Strewnfields are often oval-shaped with the largest specimens
found at one end. Given that the largest specimens go the greatest distance, a meteoroid’s flight direction can be roughly determined from the size pattern in the strewnfield. The Australasian strewnfield, which covers ~10% of Earth’s surface, is the largest and the youngest of tektite strewnfields. This ~800,000 year-old field includes most of Southeast Asia, and extends across the ocean to include the Philippines, Indonesia, Malaya and Java and reaches far out into the Indian Ocean and south to the western side of Australia. The impact crater may have been between 32 and 114 km in diameter.


Image source: http://www.tektites.co.uk/australasian.html.