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Book Chapter

Cycles of uranium and thorium

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Published:
January 01, 1977

Abstract

Earth differentiation is considered to be advanced but incomplete, and to be proceeding largely through the agencies of liquid or creep convection, diffusion, and igneous intrusion. Seafloor-spreading (Fig. 3) rates up to 4.5 cm per year (Heirtzler, 1968), when compared with the proportion of uranium believed transferred to the crust, suggest that convection velocities may be greater than the transfer rate and, therefore, that uranium and thorium in convection cells may have been recycled and a proportion bled off for transfer during each cycle.

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Contents

AAPG Studies in Geology

Migration of Uranium and Thorium-Exploration Significance

John W. Gabelman
John W. Gabelman
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American Association of Petroleum Geologists
Volume
3
ISBN electronic:
9781629812069
Publication date:
January 01, 1977

GeoRef

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