Advances in space science and technology. Volume 3 by Frederick I. Ordway PDF


By Frederick I. Ordway

ISBN-10: 1483199614

ISBN-13: 9781483199610

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Additional info for Advances in space science and technology. Volume 3

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Thorarinsson. H a 3 O ►H § w > O F O O *} O S3 O f FIG. 8a. Basaltic lava cave, Dimmuborgir region of Iceland. FIG. 8b. Detail of lava cave roof, Dimmuborgir region of Iceland. 32 33 THE ROLE OF GEOLOGY IN LUNAR EXPLORATION Even if only a small proportion of lunar craters turns out to be volcanic in origin, it is still highly important to seek them out. Features observed in and around lunar craters which are suggestive of a volcanic origin are tabulated in Fig. 9. Here the term entry refers to the name of a specific crater; these entries are so keyed in a paper by Green [46, p.

Undoubtedly, impact could produce unusual mineralization effects on a local scale if hydrous chondrites or comet head products are present. C. Use of Minerals 1. VOLCANIC MINERALIZATION Volcanic mineralization, if it exists, would probably involve the elements concentrated in sea water on Earth. The reasoning followed is based on the defluidization process endorsed by Rubey [90] and Poldervaart [91]. The defluidization hypothesis would appeal to submarine vol- 48 JACK GREEN AND JACK R. VAN LOPIK canism on Earth to have enriched sea water in certain elements and to have even supplied part of the water.

This mechanism, however, has no counterpart on earth and is considered unlikely. THE ROLE OF GEOLOGY IN LUNAR EXPLORATION 47 5. LUNAR MODELS The nature of the surface of the Moon based on the impact and volcanic models is postulated in Table III. Estimates of volcanic thicknesses are based on terrestrial analogy. The effect of lesser gravity on the Moon would probably increase the thickness of the rock froths that might be produced there. Because lateral variation in volcanics is the rule rather than the exception, no simple model of this type would be applicable over large areas.

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Advances in space science and technology. Volume 3 by Frederick I. Ordway

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