Sulphide mineralisation and hydrocarbon migration in North Sea oilfields

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Authors:Baines, S. J.; Burley, S. D.; Gize, A. P.
Author Affiliations:Primary:
University of Manchester, Manchester, United Kingdom
Other:
Université de Nancy I, France
Volume Title:Source, transport and deposition of metals
Volume Authors:Pagel, Maurice, editor; Leroy, Jacques L.
Source:p.507-510; 25th anniversary meeting of the Society for Geology Applied to Mineral Deposits, Nancy, France, Aug. 30-Sept. 3, 1991, edited by Maurice Pagel and Jacques L. Leroy. Publisher: A. A. Balkema, Rotterdam, Netherlands
Publication Date:1991
Note:In English. 14 refs.; illus. incl. sketch maps
Summary:Genetic models for Mississippi Valley type Pb-Zn-Fe-S deposits often suggest a relationship between hydrocarbons and the ore mineralization. This association can often only be inferred from the presence of hydrocarbons trapped within fluid inclusions. In the outer Moray Firth the mineralization is concentrated within the oil zone of hydrocarbon reservoirs so the geology of this area may be used to evaluate the direct association of Pb-Zn-Fe-S ores with hydrocarbon generation. The texture and chemistry of the sulphide mineralization is very variable on both a local and regional scale. Sphalerite shows greatest variation in samples from differing structural levels. Fluid inclusion studies indicate that mineral precipitation took place at minimum T of 70-120 degrees C from complex brines of variable salinity. [R.E.S.]
Subjects:Base metals; Economic geology; Hydrocarbons; Iron ores; Lead ores; Metal ores; Migration; Mineral deposits, genesis; Mineralization; Mississippi valley-type deposits; Ore-forming fluids; Organic compounds; Petroleum; Sulfides; Zinc ores; Atlantic Ocean; Europe; Great Britain; Moray Firth; North Atlantic; North Sea; Scotland; United Kingdom; Western Europe
Abstract Numbers:93M/360
Record ID:1992080206
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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040 |a ViAlAGI  |c ViAlAGI 
072 7 |a 26A  |2 georeft 
100 1 |a Baines, S. J.  |e analytic author  |u University of Manchester, Manchester 
245 1 0 |a Sulphide mineralisation and hydrocarbon migration in North Sea oilfields 
300 |a p. 507-510 
500 |a In English. 14 refs. 
500 |a Abstract number: 93M/360 
500 |a Abstractor: R.E.S. 
500 |a Affiliation: University of Manchester; Manchester; GBR; United Kingdom 
500 |a Affiliation: Université de Nancy I; ; FRA; France 
500 |a Source note: p.507-510; 25th anniversary meeting of the Society for Geology Applied to Mineral Deposits, Nancy, France, Aug. 30-Sept. 3, 1991, edited by Maurice Pagel and Jacques L. Leroy. Publisher: A. A. Balkema, Rotterdam, Netherlands 
500 |a Publication type: monograph 
504 |b 14 refs. 
510 3 |a GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom 
520 |a Genetic models for Mississippi Valley type Pb-Zn-Fe-S deposits often suggest a relationship between hydrocarbons and the ore mineralization. This association can often only be inferred from the presence of hydrocarbons trapped within fluid inclusions. In the outer Moray Firth the mineralization is concentrated within the oil zone of hydrocarbon reservoirs so the geology of this area may be used to evaluate the direct association of Pb-Zn-Fe-S ores with hydrocarbon generation. The texture and chemistry of the sulphide mineralization is very variable on both a local and regional scale. Sphalerite shows greatest variation in samples from differing structural levels. Fluid inclusion studies indicate that mineral precipitation took place at minimum T of 70-120 degrees C from complex brines of variable salinity. 
650 7 |a Base metals  |2 georeft 
650 7 |a Economic geology  |2 georeft 
650 7 |a Hydrocarbons  |2 georeft 
650 7 |a Iron ores  |2 georeft 
650 7 |a Lead ores  |2 georeft 
650 7 |a Metal ores  |2 georeft 
650 7 |a Migration  |2 georeft 
650 7 |a Mineral deposits, genesis  |2 georeft 
650 7 |a Mineralization  |2 georeft 
650 7 |a Mississippi valley-type deposits  |2 georeft 
650 7 |a Ore-forming fluids  |2 georeft 
650 7 |a Organic compounds  |2 georeft 
650 7 |a Petroleum  |2 georeft 
650 7 |a Sulfides  |2 georeft 
650 7 |a Zinc ores  |2 georeft 
651 7 |a Atlantic Ocean  |2 georeft 
651 7 |a Europe  |2 georeft 
651 7 |a Great Britain  |2 georeft 
651 7 |a Moray Firth  |2 georeft 
651 7 |a North Atlantic  |2 georeft 
651 7 |a North Sea  |2 georeft 
651 7 |a Scotland  |2 georeft 
651 7 |a United Kingdom  |2 georeft 
651 7 |a Western Europe  |2 georeft 
700 1 |a Burley, S. D.,  |e analytic author 
700 1 |a Gize, A. P.,  |e analytic author 
700 1 |a Leroy, Jacques L.,  |e monographic editor 
711 2 |a 25th anniversary meeting of the Society for Geology Applied to Mineral Deposits  |d (1991 :  |c Nancy, France)  
773 0 |a Pagel, Maurice, editor  |t Source, transport and deposition of metals  |d Rotterdam : A. A. Balkema, 1991  |n p.507-510; 25th anniversary meeting of the Society for Geology Applied to Mineral Deposits, Nancy, France, Aug. 30-Sept. 3, 1991, edited by Maurice Pagel and Jacques L. Leroy. Publisher: A. A. Balkema, Rotterdam, Netherlands Publication type: monograph  |h illus. incl. sketch maps