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Abstract

SOLUTE DIFFUSION PROFILES FOR CL(-),BR(-),F(-)AND SO4(--) HAVE BEEN MEASURED IN A GRANITE BLOCK WHICH WAS IMMERSED IN THE SEA AT FALMOUTH, CORNWALL, FOR 30 YEARS. LEACHABLE CONCENTRATIONS OF CL(-) AND BR(-) WERE FOUND TO BE HIGHER IN THE BLOCK THAN IN QUARRY SAMPLES OF GRANITE, WHICH DEMONSTRATES THAT SOLUTES FROM THE SEA WATER HAVE DIFFUSED INTO THE BLOCK. DIFFUSION HAS GONE TO EQUILIBRIUM, INDICATING A HIGHER DIFFUSIVITY FOR THE GRANITE THAN EXPECTED. THERE HAS ALSO BEEN SOME OUT-DIFFUSION OF SOLUTES INTO THE SEA. IT IS BELIEVED THAT HIGH CONCENTRATIONS OF SUCH SOLUTES,EG.F(-) AND SO(4)(--) WERE GENERATED AT THE MARGINS OF THE BLOCK DUE TO WEATHERING PROCESSES. THIS DEMONSTRATES THE POTENTIAL FOR MEASUREMENT OF SOLUTE MIGRATION IN GRANITE.

Additional information

Authors: JEFFERIES N L AERE HARWELL, DIDCOT, OXON., UK, AERE HARWELL, DIDCOT, OXON., UK
Bibliographic Reference: EUR 11627 EN (1988) FS, PP 15, ECU 5.00, AVAILABILITY: EUROFFICE, LUXEMBOURG, BP 1003, GDL
Availability: Can be ordered online
Record Number: 1989126221400 / Last updated on: 1989-04-01
Category: PUBLICATION
Available languages: en