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Yarrabubba Crater
CHF 37.20
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SKU
V2FOFL96793
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Geliefert zwischen Mo., 26.01.2026 und Di., 27.01.2026
Details
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Yarrabubba crater refers to an impact structure (or astrobleme), the eroded remnant of a former impact crater, situated in the northern Yilgarn Craton between the towns of Sandstone and Meekatharra, central Western Australia. The original crater has been completely eroded and is not readily visible on aerial or satellite images; the evidence for impact comes rather from the presence of shocked quartz and shatter cones in outcrops of granite interpreted the be near the centre of the original crater, and from geophysical data. The diameter of the original crater is uncertain, but has been estimated to be in the range 30 70 km. The age of the impact event is also uncertain, but it must be younger than the granite that has been shocked, which has been dated at about 2650 Ma (late Archaean). Veins of pseudotachylite (rocks melted by friction) in the granite have given a date of 1134±26 Ma using the Ar-Ar method, and although the significance of this age is not fully clear it is currently considered by some to provide the best tentative estimate for the age. The Earth Impact Database prefers an intermediate estimate of about 2000 Ma.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786131327544
- Genre Geowissenschaften
- Editor Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
- Anzahl Seiten 72
- Herausgeber Betascript Publishing
- Größe H220mm x B220mm
- EAN 9786131327544
- Format Fachbuch
- Titel Yarrabubba Crater
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