ECENT reviews of the problem of the origin of ocean basins and continents have been given
by Howellº, and by Jacobs, Russell and Wilsonº. The classical hypotheses in this connexion …

HARGRAVES1 has proposed that the separation of the primordial shells of the earth into
continents and oceans began only about 3,700 Myr ago and continued through most of …

concerning ALS treatment: first, immunological recovery Page 1 1 3283 a thymus restores
immunological responsiveness to thymectomized irradiated mice". In summary, in the system …

THE occurrence immediately behind island arcs of small ocean basins such as the Sea of
Japan and the Sea of Okhotsk is linked with the evolution of lithospheric features of the …

TWO decades ago relatively little was known about the detailed topography of the sea floor
and even less about its geophysical characteristics. At that time each track-line of a survey or …

The earth is uniquely favored among the planets: it has rain, rivers and seas. The large
planets (Jupiter, Saturn, Uranus and Neptune) have only a small solid core, presum ably …

IN my article on the isotopic evolution of the Earth1 the presence of epicontinental seas at
numerous times during the past 2 billion yr and the nearly constant thickness of Pre …

IN a previous paper1 I have shown that the correlation of diameter versus depth for lunar
craters of different apparent ages can be understood in terms of the former presence of a …

HE question whether the continents have been fixed in approximately the same relative
position since their creation, or whether they have moved has been debated for fifty years …

THE possibility that the continents of the Earth once formed part of a unified mass, Pangaea,
has recently received much support1–3. The actual form of Pangaea is by no means agreed …