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The geologic history of quartz-normative and olivine-normative basalts in the vicinity of Hadley Rille (Apollo 15)The geologic history of the quartz normative (QNB) and olivine normative (ONB) basalt types at Hadley Rille are discussed. A model for the geology of the mare basalts was constructed from a combination of field observations, sample chemistry, sample petrology and personal bias from terrestrial experience. The model proposes that the QNBs are the only mare lava type that is present as outcrop in the area traversed by the astronauts during the Apollo 15 mission. The returned QNB samples formed during a single eruptive phase of the Hadley Rille lava tube system. The ONB lavas are an exotic component transported to the site by a cratering event, or the ONBs are samples excavated from older are bedrock that was partly covered by the QNB lavas.
Document ID
19860013046
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Grove, T. L.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: Lunar and Planetary Inst. Papers Presented to the Workshop on the Geology and Petrology of the Apollo 15 Landing Site
Subject Category
Lunar And Planetary Exploration
Accession Number
86N22517
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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