Density, chemistry, and size distribution of interplanetary dustDepth/diameter ratios measured for 98 craters in lunar glass targets reveal a broad distribution with a single strong peaking between 0.55 and 0.8. The measured values indicate a mean meteoroid density greater than 1 g/cu cm and probably less than 4 g/cu cm. Microprobe analyses show that typical glass pit liners on silicate targets contain only approximately 0.1% or less of meteoritic material. The size-frequency distribution of meteoroids was analyzed for a fractured glass surface of 60095, and a very steep size distribution of submicron meteoroids is indicated. As in the case of 15205, a dip at approximately 5 micron in the size-frequency distribution is detected.
Document ID
19780062902
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Brownlee, D. E. (Washington, University Seattle, Wash., United States)
Horz, F. (NASA Johnson Space Center Geology Branch, Houston, Tex., United States)
Hartung, J. B. (New York, State University Stony Brook, N.Y., United States)
Gault, D. E. (NASA Ames Research Center Moffett Field, Calif., United States)