Masters Theses


"Morphology and internal structures of surface features of the Mare Humorum area were interpreted from photographs and topographic maps. The postulated origin of certain features is based on analog comparisons with known terrestrial features. The laws of crate ring and a newly developed computer program were applied to two representative classes of craters to determine the possibility of a meteoritic impact origin. Some of the craters formed by meteoritic impact and others, including those with a radius larger than 10 Km, probably resulted from volcanic activity.

Mare Humorum formed from centripetal subsidence followed by extensive lava eruptions. Spacially related rilles and gravity faults on the east and west of the Mare are tension fractures resulting from directed radial forces produced by the subsidence. Bending and monoclinal centripetal warping on the north and south of the Mare resulted in inward tilted older craters. Wrinkle ridges of sub-parallel marginal pattern are lava filled fissures and surface highs of lava showing a rough anticlinal form. These and similar fractures were the channelways for the extensive lava eruptions which covered the Mare.

An interpretive geologic and tectonic map demonstrated the important structural features of the Mare Humorum area"--Abstract, page ii.


Proctor, Paul Dean, 1918-1999

Committee Member(s)

Beveridge, Thomas R. (Thomas Robinson), 1918-1978
Clark, George Bromley, 1912-
Maxwell, James C.


Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Geology


University of Missouri at Rolla

Publication Date



v, 58 pages

Note about bibliography

Includes bibliographical references (pages 54-57).

Geographic Coverage

Mare Humorum (Moon)


© 1966 Adnan Said Abul-Husn, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Lunar geology
Moon -- Maps
Tectonics (Geology)

Thesis Number

T 1901

Print OCLC #


Electronic OCLC #


2.tif (242006 kB)
Plate I: Geologic and Tectonic Map of Mare Humorum

1.tif (105921 kB)
Plate II: Geologic and Tectonic Cross Section Along Line AB in Plate I

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