Shatter cones are a geological feature that is only known to form due to a meteorite impact or nuclear explosion. They are evidence that the bedrock has been subjected to extremely high pressures, in the range of 2–30 gigapascals - that is a shock wave of 2.000.000.000 to 30.000.000.000 kilos per square meter.
Shatter cones have a characteristic conical shape that radiates from the top. Usually they have convex shapes although sometimes they have a concave shape, specially next to a larger cone. In fine-grained rocks such as in this one, they form an easily recognizable pattern with tens of thin grooves around the cone.
Usually the cones point upwards and toward the center of the impact crater, although the orientation of some of the rocks have been changed by post-cratering geological processes at the site.
A meteorite crater in Steinheim was the point of creation of these rare shatter cones. The impact was most probably formed simultaneously with the much larger crater in Nördlinger due to a double asteroid with an oblique ENE direction. The crater is 3,8 km in diameter and the age is estimated to be 15 ± 1 million years.
For auction a fine-grained very detailed set of multiple overlapping shatter cones from Steinheim, Germany.
Weight: 8 grams.
Certificate of authenticity included.
Packages are usually sent the morning after the auction. Shipping is combined in all my listings - if you win multiple items, only one shipping cost is paid.
Do not miss this opportunity!
- Belangrijkste mineraal / Naam meteoriet
- Shatter Cone uit Steinheim, Duitsland.
- Minerale vorm / Soort meteoriet
- 44,8 g
- Oorsprong (Regio/Stad)
- 15 miljoen jaar geleden, Steinheim
- Oorsprong (Land)