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Contenu archivé le 2019-03-12

DETERMINATION OF FACTORS CONTROLLING CHROMITE MINERALISATION WITH SPECIAL EMPHASIS ON AIDS TO MINERAL EXPLORATION

Objectif



TO DEFINE GENETICAL CONDITIONS OF CHROMITE CONCENTRATIONS IN OPHIOLITIC COMPLEXES AND TO ESTABLISH THE MAGMATIC, STRUCTURAL AND CHEMICAL CONTROLS OF THIS MINERALISATION, WITH THE AIM OF DETERMINING PROPECTION GUIDES.

THIS IS A JOINT PROJECT INVOLVING ALSO UNIV. HAMBURG (CONTRACT NR. MSM 012) BRGM, ORLEANS (MSM 038) AND THE OPEN UNIVERSITY (MSM 108). IT CONTINUES RESEARCH INITIATED IN OMAN AND AND GREECE BY THE SAME GROUP (PRIMARY RAW MATERIALS PROGRAMME 1978-1981).

FIELD WORK BY ALL FOUR TEAMS WILL BE CARRIED OUT IN NEW CALEDONIA.

RESEARCH IS FOCUSED HERE ON STRUCTURAL AND METAMORPHIC PROCESSES GIVING RISE TO CHROMITE CONCENTRATION. IT WILL CONSIST IN AN INVESTIGATION AND CLASSIFICATION OF STRUCTURES DEVELOPED IN:

(I) THE SEMI-CONSOLIDATED STATE (SLUMPING, FLOW FOLDING, ETC.)

(II) THE POST-CONSOLIDATED PERIOD

A) UNDER HIGH CONFINING PRESSURE (BOUDINAGE OF CHROMITITE PODS, PLASTIC DEFORMATION, DEVELOPMENT OF MINERAL LINEATION AND OTHER RECRYSTALLISATION OF CHROMITE AND ASSOCIATED SILICATES, PULL-APRT TEXTURES)

B) UNDER LOW CONFINING PRESSURE AND LOW TEMPERATURE ASSOCIATED WITH FINAL EMPLACEMENT OR SERPENTINISATION (PULL-APART TEXTURES, NORMAL FAULTING, FOLDING AND SHEARING).

THE FINAL REPORT WILL INCLUDE THE EARLIER RESULTS ON OMAN GREECE.

Thème(s)

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Régime de financement

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Coordinateur

KOBENHAVNS UNIVERSITET
Contribution de l’UE
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Adresse
GEOLOGICAL CENTRAL INSTITUTE OSTER VOLDGADE 10
1350 KOEBENHAVN
Danemark

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