History of Boulder 1 at Station 2, Apollo 17 based on trace element interrelationships
Correlations among the trace and minor element pairs Cl and Br, Cl and P/sub 2/O/sub 5/, and Ru and Os, present in parent igneous rocks, generally survived the processes of boulder breccia formation. Fractions of the Cl, Br, and Hg that are mobilized by water leaching and/or volatilization at moderate temperatures (less than or equal to 450/sup 0/C) place constraints on the thermal history of Boulder 1 and its component breccias. Since, and possibly during, consolidation, the boulder has probably not been subjected to temperatures of greater than or equal to 450/sup 0/C. The parent rocks of the Apollo 17 boulder and breccia samples studied could have been derived from two initial magmas. Boulder 1, Station 2 gray competent breccias 72255 and 72275 Clast number 2 appear to be genetically unrelated to gray competent breccia and anorthositic material 72215, or to light friable breccia 72275; they do appear to be related to samples 72395 (Boulder 2) and 76315 (Station 6 boulder). Vapor clouds from apparently external sources permeated the source regions of the boulders. (auth)
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 7366035
- Journal Information:
- Moon; (United States), Vol. 14:3/4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aspects of the history of 66095 based on trace elements in clasts and whole rock
Magnesian anorthosites and associated troctolites and dunite in Apollo 14 breccias
Related Subjects
GENERAL PHYSICS
LUNAR MATERIALS
CHEMICAL COMPOSITION
BROMINE
CHLORINE
IGNEOUS ROCKS
MERCURY
OSMIUM
PHOSPHORUS OXIDES
RUTHENIUM
TRACE AMOUNTS
CHALCOGENIDES
ELEMENTS
HALOGENS
METALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PLATINUM METALS
REFRACTORY METALS
ROCKS
TRANSITION ELEMENTS
640107* - Astrophysics & Cosmology- Planetary Phenomena