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SUCCESSION NORMALE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-04-09

English

Subject field(s)
  • Economic Geology
CONT

mineral sequence: The order of deposition during formation. A normal sequence is stated to be oxides followed by sulfides and ending with elements, such as gold. Ideal conditions necessary for normal deposition are those which are not subjected to crowding, telescoping, stretching, etc. during the deposition or rejuvenation of mineralizing solutions, effective changes of wall rock along the vein, or any of the similar changes common in ore deposition.

French

Domaine(s)
  • Géologie économique
CONT

L'existence d'une «succession normale», dans la suite chronologique du dépôt des minéraux constituant un gisement métallifère quelconque des types ignés ou hydrothermaux profonds, indique que la genèse de ces gisements dépend de lois physico-chimiques très générales, mais non encore élucidées. [...] On peut admettre, en première approximation, qu'elle est en rapport avec la décroissance de la température des fluides minéralisateurs émanés de magmas éruptifs.

Spanish

Save record 1

Record 2 1984-12-12

English

Subject field(s)
  • Silviculture
OBS

Forest Succession ... the competition and nature of the forest community is modified as new species invade and others decline in importance. This internally process of community change is called succession. ... The first plants to invade an area of relatively open conditions are called pioneers ... Their presence alters the site and a new series of plants begin to appear, plants with somewhat different tolerances for shade than the pioneers.

French

Domaine(s)
  • Sylviculture
OBS

Pionnier: Plante capable de s'installer dans des sites dénudés [...] et d'y persister (c.-à-d. de les coloniser) jusqu'à ce qu'elle soit supplantée par d'autres espèces (espèces successives) au fur et à mesure d'une nouvelle évolution climacique.

OBS

Équivalent proposé par le pathologiste au Centre de recherches forestières des Laurentides.

Spanish

Save record 2

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