Identification of two populations of extraterrestrial particles in a Jurassic hardground of the southern Alps.
Two populations of extraterrestrial particles occur in a Lower-Middle Jurassic hardground. One is unambiguously identified as consisting of highly weathered iron-nickel cosmic spherules. This population is common in old sediments, especially in hardgrounds. The second and most abundant population is unusual, consisting of particles with irregular shapes. Their structures and chemical compositions indicate a probable derivation from chondritic material.
Lunar and Planetary Science Conference Proceedings
- Pub Date:
- Alps Mountains (Europe);
- Extraterrestrial Matter;
- Concentration (Composition);
- Lunar and Planetary Exploration; Miscellaneous;
- Cosmic Dust:Chemical Composition;
- Cosmic Dust:Origin