Description
Contains two books:Field Geology in Colour
Minerals and Rocks in Colour
Field work, supplemented by laboratory studies, has been the foundation for our present knowledge of the geology of the Earth. The latest exciting concepts of Plate Tectonics and Continental Shifting, well publicized by many good television programmes and books, have developed from the synthesis of field work on the con- tinents with the technological developments that have made possible drilling in deep water (and hence the sampling of the rocks that underlie the ocean floors), the laboratory techniques for dating rocks whether from the continents or from the ocean floors and for determining their position at a particular moment of the geological past relative to the Earth's magnetic pole.
This book has been planned to give guidance on the field work that can be done with a minimum of equipment hammer, handlens, notebook and pencil, map and compass/clinometer. To these must be added an eye trained to recognize and appreciate the significance of changes, often subtle changes, in landscape, in the disposition of the beds and in the detail visible on the exposed surface of rock. The features shown in the colour plates and described in the relevant text range from the clearly obvious to those which can only be detected by careful observation. The colour plates have been selected from many different localities to cover as wide a range of rock types and field occurrences as possible.
