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The invited, original chapters by both American and British
scientists make this an unusually up-to-date text which attests to
the vitality of the present-day concerns of Earth scientists.
During the past decade, research by oceanographic geophysicists
which has led to the wide acceptance that continents drift about
the face of the Earth and to the concept of sea-floor spreading has
culminated in an all-embracing theory known as 'plate tectonics'.
This theory draws sea-floor spreading, continental drift, crustal
structures and world patterns of seismic and volcanic activity
together as aspects of one coherent picture. Not only does it
explain geophysical evidence and provide a framework within which
geological data accumulated over the past two centuries can be
fitted; it has also taken the Earth sciences to the stage where
they can explain what has happened at the present time, and predict
what will happen in the future. In addition, the book covers other
currently exciting advances in the Earth sciences such as the
accurate dating of rocks by radiometric methods; the Earth's
internal composition, magnetic field, heat and internal
temperatures; the Chandler Wobble; meteorites; and the Earth-Moon
system. Three final chapters illustrate the role of the Earth
sciences in society: earthquake prediction and modification,
nuclear explosions and earthquakes, and a cautionary yet
illuminating account of the Mohole project, which became "perhaps
the greatest fiasco in the history of science." Although the book
is arranged in a sequence the editors feel is a logical one for
straightforward reading, each chapter is self-contained and is
introduced by a brief explanatory preface.
Derived from a discussion meeting held at the Royal Society in
London, this book presents contributions from many of the world's
leading experts on allochthonous terranes. They discuss exotic
terranes in Africa, America, Asia and Europe, presenting up-to-date
discussion of the phenomena.
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