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MESOTHERMAL MINERAL DEPOSIT [1 record]

Record 1 2005-02-14

English

Subject field(s)
  • Metals Mining
  • Thermal Springs - Uses
DEF

A mineral deposit formed at moderate temperatures and moderate pressures, in and along fissures or other openings in rocks, by deposition at intermediate depths, chiefly from hydrothermal fluids derived from consolidating intruding rocks.

CONT

... epigenetic-hydrothermal deposits are classified according to their depth and temperature of formation - hypothermal deposits being deep-seated high temperature deposits; mesothermal deposits those formed at low temperatures and medium depths, and, thirdly, epithermal near-surface deposits.

CONT

... mesothermal deposits ... may be associated with regional tectonic fractures. Common in both normal and reversed faults.

OBS

Mesothermal deposits ("transitional" deposits of Panteleyev, 1986), which may form as deep as perhaps 3000 m in close association with intrusions, have many characteristics in common with epithermal deposits, including aspects of their origin.

French

Domaine(s)
  • Mines métalliques
  • Thermalisme
DEF

Gisement hydrothermal qui a été formé par des solutions ascendantes à moindre profondeur et à moindre température qu'un gisement hypothermal.

CONT

Gîtes mésothermaux. Ce sont ceux qui permettent le mieux l'application pratique de la zonalité, car les variations minéralogiques n'y sont ni trop rapides ni assez lentes pour être imperceptibles.

CONT

Les dépôts mésothermaux autres que les veines de quartz aurifère peuvent se rencontrer avec les failles inverses ou normales ou une combinaison des deux [...]

OBS

Les gîtes mésothermaux (les gîtes «transitionnels» de Panteleyev, 1986), qui peuvent se former à des profondeurs atteignant peut-être 3 000 m, en étroite association avec des intrusions, présentent de nombreuses caractéristiques communes avec les gîtes épithermaux, y compris certains aspects concernant leur origine.

Key term(s)
  • gisement transitionnel
  • gîte de type transitionnel

Spanish

Campo(s) temático(s)
  • Minas metálicas
  • Fuentes termales - usos
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