TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PHENOCLASTE [1 record]

Record 1 2011-01-29

English

Subject field(s)
  • Petrography
  • Vulcanology and Seismology
DEF

[One of] the larger, conspicuous fragments in a sediment or sedimentary rock, such as cobbles in a conglomerate.

CONT

Autobrecciation along the margins of the dyke, subrounded fragments, subhedral to rounded and fragmented plagioclase and quartz phenocrysts (phenoclasts), and the autometasomatic effects of deuteric fluids support fluidization (vapour-magma emulsion) as a key emplacement mechanism for the dyke ...

OBS

The size of the phenoclasts varies from less than 1 cm to boulders of over 1 m in diameter.

OBS

Volcanic rocks for which a complete mineral mode cannot be determined, and have not yet been analysed, may be named provisionally following the terminology of Niggli (1931 ...), by using their visible minerals (usually phenocrysts) to assign a name which is preceded by the prefix pheno- ...

OBS

phenoclast: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
  • Volcanologie et sismologie
CONT

L'épanchement par débordement brutal à partir de fissures profondes de nuées pyroclastiques riches en phénoclastes et en xénolithes, est la forme habituelle des éruptions.

OBS

phénoclaste : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 1

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2024
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Features

Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: