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  • LUNAR AND PLANETARY EXPLORATION  (6)
  • MATERIALS
  • Macrolide 2′-phosphotransferase
  • metabolic interconversion
  • 1980-1984  (2)
  • 1975-1979  (4)
Collection
Keywords
  • LUNAR AND PLANETARY EXPLORATION  (6)
  • MATERIALS
  • Macrolide 2′-phosphotransferase
  • metabolic interconversion
  • SPACE TRANSPORTATION  (1)
Years
Year
  • 1
    facet.materialart.
    Unknown
    Petrology of mare-type basalt clasts from consortium breccia 73255 (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Breccia 73255 contains sparse small clasts of basalts that have mare affinities; the basalts are members of a single differentiated suite. The clasts have been fractured throughout and locally granulated. Textural and compositional evidence indicates that the fracturing and granulation were produced by the 73255 breccia-forming event, and this event took place before the basalts had completely solidified. Thus, it appears that the eruption of the basalts took place at about the same time as the formation of the 73255 breccia, about 3.9 b.y. ago. The mineral assemblages and modes of the basalt clasts are those typical of mare basalts, but the clasts are not identical in detail with any basalts returned from the mare surfaces. They are instead most similar to the 14053-type basalts from the Apollo 14 site.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 17, 1980 - Mar 21, 1980; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Thermal and mechanical history of granulated norite and pyroxene anorthosite clasts in breccia 73255 (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 19, 1979 - Mar 23, 1979; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Unknown
    Consortium breccia 73255 - Laser /Ar-39/-/Ar-40/ dating of aphanite samples (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Laser (Ar-39)-(Ar-40) studies of clasts and groundmass in breccia 73255 are presented. They show a variety of ages indicating that some materials lost argon from sites that outgas at low temperature, while other materials have retained argon generated before the breccia-forming event. The estimate for the time of the breccia-forming event from thermal release studies is compared to the upper limit of the event from the laser studies; this work also shows that ages in excess of 4.0 G.y. determined on rocks containing devitrified maskelynite clasts probably have no chronological significance.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 19, 1979 - Mar 23, 1979; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Unknown
    Consortium breccia 73255 - Genesis and history of two coarse-grained 'norite' clasts (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A study of two clasts of coarse-grained anorthositic-noritic-troctolitic-suite norites from the fragment-laden melt rock 73255 is presented. Both clasts are igneous rocks crystallized from melts that were probably internally generated; clast 27,80 is a cumulate, and the parent magmas of both rocks probably crystallized below the lunar surface. Despite similar history, the parent rocks of the two clasts appear to be derived from distinct magma types: the 27,80 is characterized by plagioclase and orthopyroxene as the major constituents and by a high K, Nb, and Zr content, while the 27,45 type also contains augite and has a low content of K, Nb, and Zr.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 19, 1979 - Mar 23, 1979; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Unknown
    Comparative thermal histories of matrix from Apollo 17 Boulder 7 fragment-laden melt rocks - An analytical transmission electron microscopy study (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 17, 1980 - Mar 21, 1980; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Unknown
    Feldspathic granulite 79215 - Limitations on T-fo2 conditions and time of metamorphism (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Feldspathic granulite 79215, an annealed polymict breccia which has a bulk composition between anorthositic gabbro and gabbroic anorthosite, contains numerous oxide complexes in the matrix. An Ar-39-Ar-40 stepwise heating experiment gives a well-defined plateau corresponding to an age of 4.03 + or - 0.02 AE. The polmict character of this breccia and the variability of the complexes suggest that they formed as a consequence of reactions between spinel-rich clasts and matrix under the high-T low-P conditions of an ejecta blanket. The duration of annealing is estimated to have been less than 10 million yr; the absence of a KREEP component may indicate an inhomogeneous distribution of this component at the lunar surface at 4.0 AE.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 13, 1978 - Mar 17, 1978; Houston, TX
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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