Titlebook: Lamprophyres; N. M. S. Rock Book 1991 Springer Science+Business Media New York 1991 Feldspat.Paragenesis.alkaline rock.carbonatite.chemist

箴言

,Field Geology and Petrography — Macroscopy and Microscopy, Milashev (1988). This section therefore emphasises aspects peculiar to lamprophyre intrusions, which help to distinguish them from basaltic intrusions. Such aspects need to be considered at scales ranging from single bodies to entire dyke-swarms.

Obverse

Economic Geology,tes and lamproites still credits them with economic status. Only the briefest of outlines can be given here, as recent reviews are available in some cases (see below), and the latest developments necessarily involve confidential information.

ELUC

,What are Lamprophyres? — History, Definitions, Classification, and, in their own right, as sources of innumerable exotic mineral varieties and geochemical compositions. The reasons for this delayed appreciation of lamprophyres are salutory, and deserve a brief historical exposition.

谦卑

食道

,Inclusion Suites — Macrocrysts, Xenocrysts, Xenoliths, etc, volume of individual lamprophyre dykes, and locally reach 70–80% (e.g. Reynolds 1936; Ayres & Higgins 1939; Elders 1957). They can be concentrated in the central portions of dykes and sills via flow differentiation (Section 3.1).

esoteric

Nature, Origin and Evolution of Lamprophyre Melts,ity that lamprophyres represent . melts (Appendix B), or parent melts to a range of more evolved (intermediate-felsic) rock-types. Admittedly, little more can be done at present than posing some fairly intractable questions and outlining critical genetic constraints; satisfactory answers will have to await further work.

Leaven

laceration

,What are Lamprophyres? — History, Definitions, Classification,mpersistent outcrops; of legion obscure rock-types named after equally obscure European villages. To many, indeed, the term connotes little more than ‘horribly altered’, or ‘impossible to classify’. This is all a pity, for it has severely delayed the recognition until recendy that lamprophyres have

HAWK

镀金