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Volcanic ash - Terrestrial versus extraterrestrial
Attribution
This is the abstract and citation. Full text lives at NASA NTRS — we link out rather than host. All credit to the authors and Legacy CDMS.
Abstract
Verbatim from NASA NTRS. Not paraphrased, not summarized.
A principal difference between terrestrial and extraterrestrial lavas may consist in the greater ability of terrestrial lavas to form thin films (like those of soap bubbles) and hence foams. It would follow that, in place of the pumice and spiny shards found in terrestrial volcanic ash, an extraterrestrial ash should contain minute spherules. This hypothesis may help to explain lunar microspherules.
Author
- Okeefe, J. A. NASA Goddard Space Flight Center
Citation: Okeefe, J. A. (2011). Volcanic ash - Terrestrial versus extraterrestrial. Legacy CDMS. NASA NTRS ID 19760062879. https://ntrs.nasa.gov/citations/19760062879 ↗