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Cited by 13Geological and Geochemical AnalysisGeochemistry and Elemental AnalysisMineralogy and Gemology Studies

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Geochemistry and mineralogy of the Freetown layered basic igneous complex of Sierra Leone

Umeji, A.C.·1983·Chemical Geology
DOI 10.1016/0009-2541(83)90070-0
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Crossref · 10.1016/0009-2541(83)90070-0

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  • The igneous layering of the Freetown Layered Complex dips southwest and is transected by several steeply dipping late faults with both NE-SW and WNW-ESE trends.

    “The igneous layering dips southwest and is transected by several steeplydipping late faults, with both NE-SW and WNW-ESE trends (Umeji 1983).”

    From The 2017 Regent Landslide, Freetown Peninsula, Sierra Leone (2019) · cites this paper as Umeji 1983

Citations

Cites

No references could be resolved yet.

Research works printed but not linked: 29

  1. Baker, 1961, A gravity survey over the Freetown basic complex of Sierra Leone, Overseas Geol. Min. Resour., 8, 260
  2. Bambauer, 1967, Diagrams for determination of plagioclases using X-ray powder methods (Part III of Laboratory investigations on plagioclases), Schweiz. Mineral. Petrogr. Mitt., 50, 333
  3. Briden, 1971, Palaeomagnetic and radiometric evidence for the age of the Freetown igneous complex, Sierra Leone, Earth Planet. Sci. Lett., 12, 385, 10.1016/0012-821X(71)90022-7 · DOI
  4. Butler, 1962, Strontium in plagioclase feldspars from four layered basic masses in Somalia, Mineral. Mag., 33, 213
  5. Cornwall, 1957, Minor elements in Keweenawan lavas, Michigan, Geochim. Cosmochim. Acta, 12, 209, 10.1016/0016-7037(57)90033-9 · DOI
  6. Edelshtein, 1960, Geochemistry of nickel, Geochemistry, 7, 718
  7. Gast, 1960, Limitations of the composition of the upper mantle, J. Geophys. Res., 65, 1287, 10.1029/JZ065i004p01287 · DOI
  8. Green, 1967, The stability fields of aluminous pyroxene peridotite and garnet and their relevance in upper mantle structure, Earth Planet. Sci. Lett., 3, 151, 10.1016/0012-821X(67)90027-1 · DOI
  9. Hamilton, 1967, Effects of water and oxygen pressure on the crystallization of basaltic magmas, Vol. 1, 445
  10. Hamilton, 1964, The solubility of water and effects of oxygen fugacity and water content on crystallization in mafic magmas, J. Petrol., 5, 21, 10.1093/petrology/5.1.21 · DOI
  11. Hawkes, 1967, Order of abundant crystal nucleation in a natural magma, Geol. Mag., 104, 473, 10.1017/S0016756800049219 · DOI
  12. Heier, 1962, Trace elements in feldspars — a review, Nor. Geol. Tidsskr., 42, 413
  13. Helz, 1973, The relations of basalt in their melting range at pH2O = 5 kb as a function of oxygen fugacity, J. Petrol., 14, 249, 10.1093/petrology/14.2.249 · DOI
  14. Holland, 1966, A self-consistent mass absorption correction for silicate analysis by X-ray fluorescence, Spectrochim. Acta, 22, 2083, 10.1016/0371-1951(66)80057-7 · DOI
  15. Mathison, 1975, Magnetites and ilmenites in the Somerset Dam layered basic intrusion, southeastern Queensland, Lithos, 8, 93, 10.1016/0024-4937(75)90018-3 · DOI
  16. McDougall, 1963, Fractionation of chromium, nickel and copper in a differentiated dolerite—granophyre sequence at Red Hill, Tasmania, J. Geol. Soc. Aust., 10, 325, 10.1080/00167616308728550 · DOI
  17. Osborn, 1959, Role of oxygen pressure in the crystallization and differentiation of basaltic magma, Am. J. Sci., 257, 609, 10.2475/ajs.257.9.609 · DOI
  18. Osborn, 1962, Reaction series for subalkaline igneous rocks based on different oxygen pressure conditions, Am. Mineral., 47, 211
  19. Prinz, 1967, Geochemistry of basaltic rocks: trace elements, Vol. 1, 271
  20. Robson, 1962, Crystal fractionation of the Skaergaard type in modern Iceland magmas, Nature (London), 193, 1277, 10.1038/1931277b0 · DOI
  21. Snyder, 1959, Distribution of certain elements in the Duluth Complex, Geochim. Cosmochim. Acta, 2, 155
  22. Storm, 1957, The distribution of nickel in the Lambertville diabase, Geochim. Cosmochim. Acta, 11, 335, 10.1016/0016-7037(57)90102-3 · DOI
  23. Stumpfl, 1966, On the occurrence of native platinum with copper sulphides at Congo. Dam, Sierra Leone, Overseas Geol. Mineral. Resour, 10, 1
  24. Umeji, 1975, Gravity stratification in the Freetown basic igneous layered complex, Sierra Leone, West Africa, Geol. J., 10, 107, 10.1002/gj.3350100202 · DOI
  25. Wager, 1951, The distribution of trace elements during strong fractionation of basic magma — a further study of the Skaergaard Intrusion, east Greenland, Geochim. Cosmochim. Acta, 1, 129, 10.1016/0016-7037(51)90016-6 · DOI
  26. Weeden, 1970, The ultrabasic/basic igneous rocks of Huntly region, Scott. J. Geol., 6, 26, 10.1144/sjg06010026 · DOI
  27. Wells, 1962, Structure and petrology of the Freetown layered basic complex of Sierra Leone, Overseas Geol. Miner. Resour. Bull., 4, 1
  28. Wells, 1956, The anorthosites in the Colony Complex near Freetown, Sierra Leone, Colon. Geol. Miner. Resour., 6, 137
  29. Wilkinson, 1959, The geochemistry of a differentiated teschenite sill near Gunnedah, N.S.W. Geochim, Cosmochim. Acta, 16, 123, 10.1016/0016-7037(59)90051-1 · DOI

Cited by

Sorted by citations

  • The 2017 Regent Landslide, Freetown Peninsula, Sierra Leone

    Redshaw, P., Boon, D., Campbell, G., Willis, M., Mattai, J., Free, M., Jordan, C., Kemp, S. J., Morley, A., & Thomas, M. (2019) · Quarterly Journal of Engineering Geology and Hydrogeology · doi:10.1144/qjegh2018-187 · Cited by 23

    “Finally, the Bullom Group marine and estuarine sediments were deposited unconformably on to the coastal strip of Sierra Leone during the Cenozoic (Dixey 1922; Williams 1978; Morel 1979; MacFarlane et al. 1979, 1981; Umeji 1983; Chalokwu 2001).”
    Background

Metadata

Authors
Umeji, A. C.
Affiliations
University of Nigeria (NG)
Corresponding author
Umeji, A.C.
Venue
Chemical Geology
Publisher
Elsevier BV
Published
1983-04
Volume
39
Issue
1-2
Pages
17-38
ISSN
0009-2541 (ISSN-L)
DOI
10.1016/0009-2541(83)90070-0
OpenAlex
W2066104921
Cited by
13
References
0
Citations by year
2025: 1 · 2023: 1 · 2019: 1 · 2018: 1 · 2017: 1 · 2015: 1
FWCI
0.37
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
Chemical Geology (publishedVersion)
Funders
Durham University
Topics
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geological and Geochemical Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Mineralogy and Gemology Studies
Keywords
basic igneous rocks, trace element geochemistry, olivine, hypersthene, augite, plagioclase, magnetite, ilmenite, iron-titanium oxides, oxygen fugacity, magma water content, fractional crystallization, magma pulses, magma chamber, whole-rock geochemistry

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