|
Showing 1 - 2 of
2 matches in All Departments
Following their recognition by GUmbel (1874), lamprophyres were
treated for an entire century as little more than obscure
curiosities. Although this situation has changed recently, with a
flowering of publications and active workers, lamprophyres remain
almost the only group of igneous rocks which have not yet received
attention in a dedicated monograph. In five exploratory reviews
(1977-1987), the writer aimed to set out what was known about these
rocks. The lUGS Subcommission on igneous rock systematics had
meanwhile presented its nomenclatural framework (Streckeisen 1979).
All this has now been overtaken by a recent explosion of interest,
epitomized not least by lamprophyres' greater prominence in the 4th
International Kimberlite Conference Proceedings. More data have
become available since 1985 than over the entire previous century,
and it is obviously impossible for such an extraordinary outpouring
to be fully reviewed in this first, preliminary book. At the risk
of dissatisfying some readers, therefore, this book concentrates on
factual matters, and on a broad overview rather than minutiae.
Because not even a world map of known lamprophyres was previously
available, almost half the book is deliberately taken up by the
first global lamprophyre compilation, and its commensurately
extensive Bibliography. Such a compendium of largely objective
information is believed to be of more immediate interest and
lasting value than a premature pottage of petrogenetic polemic.
Chapters 1-7 bring previous studies up to date, and concentrate on
factual information.
Following their recognition by Gumbel (1874), lamprophyres were
treated for an entire century as little more than obscure
curiosities. Although this situation has changed recently, with a
flowering of publications and active workers, lamprophyres remain
almost the only group of igneous rocks which have not yet received
attention in a dedicated monograph. In five exploratory reviews
(1977-1987), the writer aimed to set out what was known about these
rocks. The lUGS Subcommission on igneous rock systematics had
meanwhile presented its nomenclatural framework (Streckeisen 1979).
All this has now been overtaken by a recent explosion of interest,
epitomized not least by lamprophyres' greater prominence in the 4th
International Kimberlite Conference Proceedings. More data have
become available since 1985 than over the entire previous century,
and it is obviously impossible for such an extraordinary outpouring
to be fully reviewed in this first, preliminary book. At the risk
of dissatisfying some readers, therefore, this book concentrates on
factual matters, and on a broad overview rather than minutiae.
Because not even a world map of known lamprophyres was previously
available, almost half the book is deliberately taken up by the
first global lamprophyre compilation, and its commensurately
extensive Bibliography. Such a compendium of largely objective
information is believed to be of more immediate interest and
lasting value than a premature pottage of petrogenetic polemic.
Chapters 1-7 bring previous studies up to date, and concentrate on
factual information.
|
You may like...
Loot
Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
Poor Things
Emma Stone, Mark Ruffalo, …
DVD
R449
R329
Discovery Miles 3 290
|