Publications
Filter Total Items: 7603
Orbital-science investigation: Part O: regional variations in the magnitude of heiligenschein and causal connections 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 crater walls, wherein it is now known from...
Authors
Robert L. Wildey
Orbital-science investigation: Part J: preliminary geologic map of the region around the candidate Proclus Apollo landing site 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 overlapped with the base frame to provide
Authors
Don E. Wilhelms
Photogeology: Part L: crater morphometry 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 undertaken in the current series of manned...
Authors
Richard J. Pike
Photogeology: Part F: reinterpretations of the northern Nectaris Basin 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 breccia and the paucity of volcanic...
Authors
Don E. Wilhelms
Orbital-science investigation: Part L: selected volcanic features 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 AS15-9954, 9956, 9958, and 9960 and by stereoscopically...
Authors
Mareta N. West
Orbital-science investigation: Part K: geologic sketch map of the candidate Proclus Apollo landing site 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 is being considered as a landing site...
Authors
Baerbel K. Lucchitta
Preliminary geologic investigation of the Apollo 16 landing site Preliminary geologic investigation of the Apollo 16 landing site
The Apollo 16 landing site in the lunar central highlands encompassed terra plains and adjacent mountainous areas of hilly and furrowed terra. These morphologic units, representing important terrane types in the lunar highlands, had been interpreted as volcanic on most premission geologic maps. However, it became apparent during the mission that there are indeed few or no volcanic rocks...
Authors
W.R. Muehlberger, R. M. Batson, E. L. Boudette, C.M. Duke, R. E. Eggleton, D. P. Elston, A. W. England, V. L. Freeman, M. H. Hait, T.A. Hall, J.W. Head, C. A. Hodges, H. E. Holt, E.D. Jackson, J.A. Jordan, K.B. Larson, D.J. Milton, V. S. Reed, J. J. Rennilson, G. G. Schaber, J.P. Schafer, L. T. Silver, D. Stuart-Alexander, R. L. Sutton, G.A. Swann, R.L. Tyner, G. E. Ulrich, H. G. Wilshire, E.W. Wolfe, J.W. Young
Earthquakes in the oil field at Rangely, Colorado Earthquakes in the oil field at Rangely, Colorado
Seven years of seismic data recorded at the Uinta Basin Observatory were searched for earthquakes originating near an oil field at Rangely, Colorado, located 65 km ESE of the observatory. Changes in the number of earthquakes recorded per year appear to correlate with changes in the quantity of fluid injected per year. Between November 1962 and January 1970, 976 earthquakes were detected...
Authors
James F. Gibbs, John H. Healy, C. Barry Raleigh, John M. Coakley
The Apollo 17 landing site The Apollo 17 landing site
Dr Lucchitta describes the geology of the Apollo 17 landing site in the Taurus-Littrow region of the Moon.
Authors
Baerbel K. Lucchitta
Photogeology: Part N: ejecta blankets of large craters exemplified by King Crater Photogeology: Part N: ejecta blankets of large craters exemplified by King Crater
Details of the ejecta blankets of large, fresh craters provide insight into the mechanics of deposition and the sequence of emplacement of impact debris. King Crater is the freshest of the three large, rayed craters photographed from Apollo 16; the others are Theophilus and Langrenus Craters. King Crater is comparable in youth to Tycho Crater, and the details of its ejecta blanket help...
Authors
Keith A. Howard
Preliminary examination of lunar samples: Part A: a petrographic and chemical description of samples from the lunar highlands Preliminary examination of lunar samples: Part A: a petrographic and chemical description of samples from the lunar highlands
More than four-fifths of the surface of the Moon consists of a profoundly cratered irregular surface designated terra or highlands by analogy with the terrestrial continents. These terra regions have much higher albedos than the physiographically lower and much smoother mare regions. The difference in albedo can now be ascribed to a fundamental difference in the chemical and...
Authors
Orbital-science investigation: Part H: sketch map of the region around the candidate Littrow Apollo landing sites Orbital-science investigation: Part H: sketch map of the region around the candidate Littrow Apollo landing sites
The photograph in figure 25-59 and the corresponding map (fig. 25-60) show the geology of part of the lunar surface just east of the Littrow rilles at the eastern edge of Mare Serenitatis. The most striking feature of the region is the extremely low albedo of the area mapped as Eld in the western half of the map. The low albedo is believed to be caused by a thin layer of pyroclastic...
Authors
M. H. Carr