Publications
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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
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
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
Orbital-science investigation: Part F: regional geology of Hadley Rille Orbital-science investigation: Part F: regional geology of Hadley Rille
Study of the sinuous Hadley Rille (fig. 25-45) was a primary goal of the Apollo 15 mission. Local geology of the rille near the landing site is described in section 5 of this report. Preliminary study of orbital photography from Hasselblad, metric, and panoramic cameras makes possible a description of some regional relationships of the rille. Considerable use is also made of a...
Authors
Keith A. Howard, James W. Head
Orbital-science investigation: Part G: lineaments that are artifacts of lighting Orbital-science investigation: Part G: lineaments that are artifacts of lighting
Many Apollo 15 orbital photographs, particularly those taken at low Sun-elevation angles, reveal grid patterns of lineaments. In some circumstances, the grid pattern is present in areas where structural control seems unlikely. For example, in an oblique view (fig. 25-52), the ejecta blankets of two fresh impact craters seem to have two intersecting sets of lineaments. Because previous...
Authors
Keith A. Howard, Bradley R. Larsen
Geological, geophysical, and engineering investigations of the Loveland Basin landslide, Clear Creek County, Colorado, 1963-65 Geological, geophysical, and engineering investigations of the Loveland Basin landslide, Clear Creek County, Colorado, 1963-65
No abstract available.
Authors
Charles Sherwood Robinson, Fitzhugh T. Lee, R.W. Moore, R. D. Carroll, J. H. Scott, J.D. Post, C. S. Robinson, R.A. Bohman
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
Photogrammetry and altimetry: Part B: photogrammetry using Apollo 16 orbital photography Photogrammetry and altimetry: Part B: photogrammetry using Apollo 16 orbital photography
The Apollo 15 and 16 metric and panoramic cameras have provided photographs for accurate topographic portrayal of the lunar surface using photogrammetric methods. In turn, quantitative morphologic analyses of topographic results are invaluable aids in the interpretation of the geologic processes.
Authors
Sherman S.C. Wu, Francis J. Schafer, Raymond Jordan, Gary M. Nakata
Photogeology: Part Y: physical and geological aspects of heiligenschein measurements Photogeology: Part Y: physical and geological aspects of heiligenschein measurements
Heiligenschein is the upsurge in reflected brightness as zero-phase angle is approached. For the first time, an effort has been made to investigate the diagnostic value of the heiligenschein photometric magnitude on a statistically significant scale. This investigation was performed by using the vertical photography of the Apollo 16 metric camera. The brightness surge of reflected light...
Authors
Robert L. Wildey
Photogeology: Part W: Apollo 16 landing site: summary of Earth-based remote sensing data Photogeology: Part W: Apollo 16 landing site: summary of Earth-based remote sensing data
The purpose of the infrared (IR) and radar study of the Apollo data is to establish lunar surface conditions in the vicinity of the orbital tracks of the Apollo command modules during the J-series missions. Correlations and comparisons between the Earth-based radar observations, IR observations, and other data will be plotted on photomaps produced from the mapping and panoramic cameras...
Authors
S.H. Zisk, Harold Masursky, D.J. Milton, G. G. Schaber, R.W. Shorthill, T.W. Thompson
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
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