TERMIUM Plus®

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

BACK REEF [4 records]

Record 1 2015-04-13

English

Subject field(s)
  • Geology
OBS

lagoonal : Quiet shallow water environment back of a reef barrier or an offshore sandbar with distinctive organisms and sedimentary conditions.

OBS

deposit: ... includes mineral matter in any form that is precipitated by chemical or other agencies ...

French

Domaine(s)
  • Géologie
CONT

Gisements lagunaires. - Les lagunes marines ou désertiques fournissent les gisements sédimentaires chimiques par évaporation. Divers dépôts chimiques ou biochimiques des lacs ou des marais peuvent rentrer dans la même catégorie.

Spanish

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Record 2 2012-01-20

English

Subject field(s)
  • Geomorphology and Geomorphogeny
  • Oceanography
CONT

The reef flat, or back reef, is located on the sheltered side of the reef. It extends outward from the shore; and may be highly variable in character.

French

Domaine(s)
  • Géomorphologie et géomorphogénie
  • Océanographie
DEF

Partie du récif opposée à la haute mer.

Spanish

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Record 3 2003-05-28

English

Subject field(s)
  • Geology
  • Petroleum Deposits
CONT

There are only four basic kinds of stratigraphic traps : unconformities, porosity permeability pinchouts, reefs, and drape structures.... Reef Traps. Reefs are productive in many parts of the world. Many types exist, such as atolls, table reefs, pinnacle reefs, barrier reefs, fringing reefs, biostromes, and bioherms. They occur as small dome like features that may be reflected in the overlying sediments by drape.... The size of a reef ranges from a few acres to several square miles. Seismic exploration is the best way to find reefs. The reef core grows upward and usually outward as the sea level rises. Detrital reef material falls on the ocean side, forming the fore reef. The back reef is formed on the lagoon or quiet side by deposition of limestone and lime mud...

CONT

Stratigraphic traps are traps created by the limits of the reservoir rock itself, without any structural control. ... Stratigraphic reef traps are amongst the most important type of trap in Alberta, where reefs of Devonian age, formed mainly of stromatoporoids host much of the petroleum. They became ideal traps when a change in the regional environment caused the reefs to be buried by muds, forming an impermeable seal and cap rock.

French

Domaine(s)
  • Géologie
  • Gisements pétrolifères
CONT

Tendance du pétrole à remonter en surface en raison de sa légèreté. Un «piège» est donc nécessaire pour le garder prisonnier de sa roche-réservoir : - Piège structural : coince le pétrole sous une couche de roche imperméable. - Dôme de sel : coince le pétrole sous une couche saline. - Piège récifal : coince le pétrole sous un récif.

Spanish

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Record 4 1977-06-02

English

Subject field(s)
  • Geology

French

Domaine(s)
  • Géologie
OBS

Henson distingue, dans un récif frangeant, les unités suivantes, en allant de la côte vers le large : 1) «Back reef shoals» (zone côtière en arrière du récif). 2) «Reef wall» (mur récifal). 3) «Reef talus slope» (talus récifal). 4) «Fore reef shoals» (bancs d'avant-récif). 5) Fore reef transition zone (zone de transition d'avant-récif). 6) «Fore reef basin» (bassin d'avant-récif). 1) «Zone côtière en arrière du récif» [...] La sédimentation y est caractérisée par des sables calcaires et des boues, formés de débris d'organismes bien roulés. La précipitation rapide de calcaire dans des eaux chaudes, peu profondes, donne des calcaires à Milioles de structure porcellanée et de fracture subconchoïdale. Parfois, les fossiles sont rares et le calcaire peut paraître purement d'origine chimique. Ces sédiments peuvent se mêler à des débris littoraux et comporter des îlots de calcaires construits récifaux.

Spanish

Save record 4

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