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Preferential veining in a conglomerate from the Trondheim region, Central Norway

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Zusammenfassung

Ein Vorkommen von Quarz-Kalzit-Albit-Gängen in einem Konglomerat wird beschrieben. Diese Gänge treten fast ausschließlich in den Komponenten auf, und ihre Mineralogie hängt zum Teil von der Lithologie des Gastgesteines, zum Teil von der Lithologie der Matrix ab. Die Mechanik der Gangöffnung wird zu erklären versucht und das Gefüge wird kurz im Zusammenhang mit Hypothesen über Kriechmechanismus beschrieben.

Abstract

An occurrence of quartz-calcite-albite veins in a conglomerate is described. These veins occur almost exclusively in pebbles, and vein mineralogy is seen to be dependent partly on the lithology of the host pebble and partly on the matrix lithology. A suggested mode of vein emplacement is presented and textural features are described briefly in the light of creep mechanism hypotheses.

Résumé

L'apparition de veines de quartz-calcite-albite dans un conglomerat est décrite. Ces veines apparaissent presque exclusivement dans des cailloux, et leur minéralogie est dépendante en partie de la lithologie des cailloux hôtes, en partie de la lithologie de matrix. Un mode suggéré pour la mise en place des veines est présenté, et des propriétés texturelles sont décrites en bref, en considérant des hypothèsende „creep“ méchanisme.

Краткое содержание

Исследованы кварцев о-кальцитовые и альби тные жилы в конгломерате (Тронхейм, Норвегия). О бразование этих шил з ависит не только от литологии самой поро ды, но и матрицы. Автор пытается объяснить механизм образования этих жил.

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References

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Author notes

  1. David Roberts

    Present address: Norges Geologiske Undersökelse, Post Box 3006, Trondheim, Norway

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    1. David Roberts
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    Roberts, D. Preferential veining in a conglomerate from the Trondheim region, Central Norway. Geol Rundsch 58, 862–866 (1968). https://doi.org/10.1007/BF01820735

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