Asteroid Differentiation: Pyroclastic Volcanism to Magma Oceans
Abstract
A summary is presented of theoretical and speculative research on the physics of igneous processes involved in asteroid differentiation. Partial melting processes, melt migration, and their products are discussed and explosive volcanism is described. Evidence for the existence of asteroidal magma oceans is considered and processes which may have occurred in these oceans are examined. Synthesis and inferences of asteroid heat sources are discussed under the assumption that asteroids are heated mainly by internal processes and that the role of impact heating is small. Inferences of these results for earth-forming planetesimals are suggested.
- Publication:
-
Meteoritics
- Pub Date:
- March 1993
- DOI:
- 10.1111/j.1945-5100.1993.tb00247.x
- Bibcode:
- 1993Metic..28...34T
- Keywords:
-
- Asteroids;
- Evolution (Development);
- Magma;
- Melts (Crystal Growth);
- Meteoritic Composition;
- Igneous Rocks;
- Iron Meteorites;
- Nucleation;
- Petrography;
- Volcanoes;
- ASTEROIDS;
- DIFFERENTIATION;
- MAGMA OCEAN;
- VOLCANISM;
- PYROCLASTICS;
- SIZE;
- THEORETICAL STUDIES;
- PARTIAL MELTING;
- MELTS;
- TRANSPORT;
- TURBULENCE;
- MAGMA;
- CONVECTION;
- INTERIOR;
- STRUCTURE;
- STRATIFICATION;
- CORE;
- HEAT;
- SILICATE;
- ZONING;
- CRYSTALLIZATION;
- VOLATILES;
- PLANETESIMALS;
- MAGMATISM;
- CALCULATIONS;
- RESIDUE;
- PARENT BODIES;
- METEORITES;
- EUCRITES;
- ANGRITES;
- LODRANITES;
- UREILITES;
- IRON METEORITES;
- PALLASITES;
- ACHONDRITES;
- STONY METEORITES;
- STONY IRON METEORITES;
- ENSTATITES;
- Lunar and Planetary Exploration; Asteroids;
- Broadly Focused Reviews