Astrogeology Science Center

Publications

Filter Total Items: 833
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Year Published: 1972

Orbital-science investigation: Part J: preliminary geologic map of the region around the candidate Proclus Apollo landing site

The Proclus Crater region was mapped to test the value, for photogeologic mapping purposes, of Apollo 15 metric photographs and to estimate the scientific value of the area as a potential landing site. A metric photographic frame (fig. 25-67) serves as a base for a map of the region around the Proclus Crater (fig. 25-68), and adjacent frames were...

Wilhelms, Don E.
Orbital-science investigation: Part J: preliminary geologic map of the region around the candidate Proclus Apollo landing site; 1972; Book chapter; 289; Federal Government Series; Apollo 15 preliminary science report (NASA SP-289); Wilhelms, Don E.

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Year Published: 1972

Orbital-science investigation: Part K: geologic sketch map of the candidate Proclus Apollo landing site

A panoramic camera frame (fig. 25-69) was used as the base for a geologic sketch map (fig. 25-70) of an area near Proclus Crater. The map was prepared to investigate the usefulness of the Apollo 15 panoramic camera photography in large-scale geologic mapping and to assess the geologic value of this area as a potential Apollo landing site. The area...

Lucchitta, Baerbel K.
Orbital-science investigation: Part K: geologic sketch map of the candidate Proclus Apollo landing site; 1972; Book chapter; 289; Federal Government Series; Apollo 15 preliminary science report (NASA SP-289); Lucchitta, Baerbel Koesters

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Year Published: 1972

Orbital-science investigation: Part L: selected volcanic features

Preliminary examination of Apollo 15 orbital photographs indicates a large number of volcanic features. One area of exceptionally interesting volcanic activity is depicted in figure 25-74. Located approximately at latitude 25° S and longitude 123° E on the lunar far side, this region also is covered by panoramic camera photographs AS15-...

West, Mareta N.
Orbital-science investigation: Part L: selected volcanic features; 1972; Book chapter; 289; Federal Government Series; Apollo 15 preliminary science report (NASA SP-289); West, Mareta N.

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Year Published: 1972

Orbital-science investigation: Part O: regional variations in the magnitude of heiligenschein and causal connections

Approximately 35 reasonably good candidates for specialized photometric studies were found during a thorough examination of the frames exposed by the Apollo 15 metric camera. Of these, the majority was of value in heiligenschein studies (refs. 25-36 to 25-38). A few were of value for limited-interval delineation of the photometric functions of...

Wildey, Robert L.
Orbital-science investigation: Part O: regional variations in the magnitude of heiligenschein and causal connections; 1972; Book chapter; 289; Federal Government Series; Apollo 15 preliminary science report (NASA SP-289); Wildey, Robert L.

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Year Published: 1972

Orbital-science investigation: Part P: the process of crater removal in the lunar maria

The processes by which craters disappear from the lunar surface have been of principal concern since the first high-resolution pictures of the lunar maria were returned by Ranger VII. Those pictures revealed that craters smaller than a few hundred meters on the lunar maria vary morphologically from sharp and pristine features to shallow, highly...

Soderblum, L.A.
Orbital-science investigation: Part P: the process of crater removal in the lunar maria; 1972; Book chapter; 289; Federal Government Series; Apollo 15 preliminary science report (NASA SP-289); Soderblum, L. A.

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Year Published: 1972

Photogeology: Part A: relative ages of some near-side and far-side terra plains based on Apollo 16 metric photography

The materials of most light or terra plains predate the lunar maria and postdate the Imbrian event. In the vicinity of the Imbrium Basin, these materials have been called the Cayley Formation (ref. 29-3) but because of the subtle diversity of the terra plains over the near side, Whilhelms and McCauley (ref. 29-4) simply called these materials...

Soderblom, Laurence A.; Boyce, Joseph M.
Photogeology: Part A: relative ages of some near-side and far-side terra plains based on Apollo 16 metric photography; 1972; Book chapter; 315; Federal Government Series; Apollo 16 preliminary science report (NASA SP 315); Soderblom, Laurence A.; Boyce, Joseph M.

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Year Published: 1972

Photogeology: Part B: Cayley Formation interpreted as basin ejecta

The discovery that samples returned from the Cayley Formation at the Apollo 16 landing site consist mainly of nonvolcanic breccias (secs. 6 and 7 of this report) suggests that the hypothesis in which light plains-forming materials may be ejecta from multi-ring basins should be reevaluated (refs 29-15 to 29-17). Improved information on the...

Eggleton, R.E.; Schaber, G.G.
Photogeology: Part B: Cayley Formation interpreted as basin ejecta; 1972; Book chapter; 315; Federal Government Series; Apollo 16 preliminary science report (NASA SP 315); Eggleton, R. E.; Schaber, G. G.

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Year Published: 1972

Photogeology: Part D: Descartes highlands: possible analogs around the Orientale Basin

The Descartes highlands are adjacent to the terra plain on which the Apollo 16 lunar module landed (fig. 29-13). A variety of volcanic origins was proposed for the highlands before the mission (refs. 29-4, 29-21, and 29-35 to 29-37), but the returned samples of the area consist almost exclusively of nonvolcanic breccias. The breccias obtained from...

Hodges, Carroll Ann
Photogeology: Part D: Descartes highlands: possible analogs around the Orientale Basin; 1972; Book chapter; 315; Federal Government Series; Apollo 16 preliminary science report (NASA SP 315); Hodges, Carroll Ann

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Year Published: 1972

Photogeology: Part F: reinterpretations of the northern Nectaris Basin

Geologic units of the Nectaris Basin rim have been interpreted as partly impact and partly volcanic in origin (refs. 29-4, 29-21, 29-35, 29-38, and 29-39). An exclusively volcanic origin was proposed for the material in the vicinity of the Apollo 16 landing site, slightly northwest of the Nectaris Basin (ref. 29-36). In view of the dominance of...

Wilhelms, Don E.
Photogeology: Part F: reinterpretations of the northern Nectaris Basin; 1972; Book chapter; 315; Federal Government Series; Apollo 16 preliminary science report (NASA SP 315); Wilhelms, Don E.

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Year Published: 1972

Photogeology: Part G: structural aspects of Imbrium sculpture

Apollo 16 metric photographs taken at low to high Sun angles (from approximately 7° to 40°) provide the first stereographic coverage of the distinctive landforms collectively referred to as "Imbrium sculpture" (refs. 29-40 and 29-41). The sculpture consists of a series of nearly linear ridges and troughs extending radially outward for more...

Scott, David H.
Photogeology: Part G: structural aspects of Imbrium sculpture; 1972; Book chapter; 315; Federal Government Series; Apollo 16 preliminary science report (NASA SP 315); Scott, David H.

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Year Published: 1972

Photogeology: Part J: ranger and other impact craters photographed by Apollo 16

The Apollo 16 crew photographed an unusual variety of impact craters, including the two craters produced by the impacts of Ranger 7 and 9 spacecraft, small craters produced by boulders as they bounced downslope, craters with marked bilateral symmetry, and primary craters with a wide range of morphologies and sizes. Ranger impact craters and...

Moore, H.J.
Photogeology: Part J: ranger and other impact craters photographed by Apollo 16; 1972; Book chapter; 315; Federal Government Series; Apollo 16 preliminary science report (NASA SP 315); Moore, H. J.

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Year Published: 1972

Photogeology: Part L: crater morphometry

Morphometric analysis of lunar craters (ref. 29-75) complements the more traditional photointerpretive study of crater morphology. These two indirect approaches to the scientific investigation of lunar craters continue to be productive because the preferred alternative method, direct field examination of specific large craters, is not being...

Pike, Richard J.
Photogeology: Part L: crater morphometry; 1972; Book chapter; 315; Federal Government Series; Apollo 16 preliminary science report (NASA SP 315); Pike, Richard J.