Bøger i Solid Earth Sciences Library serien

The major part of the world's high grade industrial manganese ore is being mined in supergene deposits. This text represents an attempt to bring together not only academic but also commercial data on all aspects of the geochemistry of formation of supergene manganese ores.

Fission track dating is based on the microscopic observation and counting of etchable tracks left by the spontaneous fission of uranium in minerals.

new book by Lima-de-Faria, Structural Classi The pure structural classification of minerals fication of Minerals, in this context, we can ask was first proposed by J.

This book presents the third volume of a complete development of the new structural classification of minerals, which is based on the internal crystal structure, and is therefore its natural classification.

TECTONlCS AND PHYSICS Geology, although rooted in the laws of physics, rarely has been taught in a manner designed to stress the relations between the laws and theorems of physics and the postulates of geology.

new book by Lima-de-Faria, Structural Classi The pure structural classification of minerals fication of Minerals, in this context, we can ask was first proposed by J.

Describes all the methods of dating terrestrial events using direct or indirect measurements of natural nuclear disintegrations. The work doesn't treat the matter of isotopic geochemistry in general, but rather concentrates on a more complete and practical guide to dating methods. The first chapter"

A selection of papers presented at the International Workshop on Fission-Track Dating, Gent, Belgium - 1996

At present various modifications of PM are being developed applicable both to uphole - (PM RW = reflected waves method, PM CDP = common-depth-point method, PM refracted-wave method, PM of regional studies utilizing earthquakes) and to downhole observations (PM VSP = vertical seismic profiling).

This book presents the third volume of a complete development of the new structural classification of minerals, which is based on the internal crystal structure, and is therefore its natural classification.

TECTONlCS AND PHYSICS Geology, although rooted in the laws of physics, rarely has been taught in a manner designed to stress the relations between the laws and theorems of physics and the postulates of geology.

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A selection of papers presented at the International Workshop on Fission-Track Dating, Gent, Belgium - 1996

Provides a structural classification of minerals, based on the minerals' internal structure. This work is based on the strength distribution and directional character of the bonds. It presents an overview of 230 mineral structure types comprizing the more common minerals in chart form.

Presents the second volume of a development of the structural classification of minerals. This work is of interest to teachers and research workers in mineralogy, and in inorganic crystal structures in academia.

There comes a time in the affairs of every organization when we have to sit down and take stock of where we are and where we want to go. When the International Heat Flow Committee (as it was first called), IHFC, was formed in 1963 at the San Francisco International Union of Geodesy and Geophysics with Francis Birch as its first Chairman, the principal purpose was to stimulate work in the basic aspects of geothermics, particularly the measurement of terrestrial heat-flow density (HFD) in what were then the 'geothermally underdeveloped' areas of the world. In this, the IHFC was remarkably successful. By the beginning of the second decade of our existence, interest in the economic aspects of geothermics was increasing at a rapid pace and the IHFC served as a conduit for all aspects of geothermics and, moreover, became the group responsi­ ble for collecting data on all types of HFD measurements. In all the tasks that are undertaken, the IHFC relies on the enthusiasm of its members and colleagues who devote much of their time to the important but unglamorous and personally unrewarding tasks that were asked of them, and we arc fortunate that our parent institutions are usually quite tolerant of the time spent by their employees on IHFC work.