Advanced search
1 file | 942.66 KB Add to list

Iron oxides in fractured quartz : development and evolution of iron sandstone layers in the Kinshasa area, DR Congo

(2018) SOIL RESEARCH. 56(5). p.518-525
Author
Organization
Abstract
Quartz grains in an iron sandstone layer in near-surface sandy deposits at Kasangulu, south of Kinshasa, DR Congo, are marked by the presence of iron oxides in subparallel horizontal cracks within the sand grains. This exceptional feature was investigated to understand its origin and paleoenvironmental significance. Based on thin section observations, supplemented by Mossbauer spectroscopy results and other data, the occurrence of filled subparallel cracks is attributed to iron oxide remobilisation following crack opening within an iron-oxide-cemented sand intercalation that became exposed through erosion, whereby crack opening is related to surface temperature fluctuations. The development of filled crack occurrences of this type requires a period of surface exposure, implying that their presence is indicative of the position of former surface levels. A macroscopically similar iron sandstone layer at another locality in the Kinshasa area, lacking filled cracks, provides indications for both surface exposure and cement type as factors in their development.
Keywords
diagenesis, fracturing, iron sandstone, quartz, surface exposure, ROCK SURFACE-TEMPERATURE, HEAT-CAPACITY, DUNE SANDS, TRANSITION, HEMATITE

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 942.66 KB

Citation

Please use this url to cite or link to this publication:

MLA
Mees, F et al. “Iron Oxides in Fractured Quartz : Development and Evolution of Iron Sandstone Layers in the Kinshasa Area, DR Congo.” SOIL RESEARCH 56.5 (2018): 518–525. Print.
APA
Mees, F, Phemba, G., Lahogue, P., De Grave, E., Van Ranst, E., & Mpiana, C. (2018). Iron oxides in fractured quartz : development and evolution of iron sandstone layers in the Kinshasa area, DR Congo. SOIL RESEARCH, 56(5), 518–525.
Chicago author-date
Mees, F, G Phemba, P Lahogue, Eddy De Grave, Eric Van Ranst, and C Mpiana. 2018. “Iron Oxides in Fractured Quartz : Development and Evolution of Iron Sandstone Layers in the Kinshasa Area, DR Congo.” Soil Research 56 (5): 518–525.
Chicago author-date (all authors)
Mees, F, G Phemba, P Lahogue, Eddy De Grave, Eric Van Ranst, and C Mpiana. 2018. “Iron Oxides in Fractured Quartz : Development and Evolution of Iron Sandstone Layers in the Kinshasa Area, DR Congo.” Soil Research 56 (5): 518–525.
Vancouver
1.
Mees F, Phemba G, Lahogue P, De Grave E, Van Ranst E, Mpiana C. Iron oxides in fractured quartz : development and evolution of iron sandstone layers in the Kinshasa area, DR Congo. SOIL RESEARCH. 2018;56(5):518–25.
IEEE
[1]
F. Mees, G. Phemba, P. Lahogue, E. De Grave, E. Van Ranst, and C. Mpiana, “Iron oxides in fractured quartz : development and evolution of iron sandstone layers in the Kinshasa area, DR Congo,” SOIL RESEARCH, vol. 56, no. 5, pp. 518–525, 2018.
@article{8575246,
  abstract     = {Quartz grains in an iron sandstone layer in near-surface sandy deposits at Kasangulu, south of Kinshasa, DR Congo, are marked by the presence of iron oxides in subparallel horizontal cracks within the sand grains. This exceptional feature was investigated to understand its origin and paleoenvironmental significance. Based on thin section observations, supplemented by Mossbauer spectroscopy results and other data, the occurrence of filled subparallel cracks is attributed to iron oxide remobilisation following crack opening within an iron-oxide-cemented sand intercalation that became exposed through erosion, whereby crack opening is related to surface temperature fluctuations. The development of filled crack occurrences of this type requires a period of surface exposure, implying that their presence is indicative of the position of former surface levels. A macroscopically similar iron sandstone layer at another locality in the Kinshasa area, lacking filled cracks, provides indications for both surface exposure and cement type as factors in their development.},
  author       = {Mees, F and Phemba, G and Lahogue, P and De Grave, Eddy and Van Ranst, Eric and Mpiana, C},
  issn         = {1838-675X},
  journal      = {SOIL RESEARCH},
  keywords     = {diagenesis,fracturing,iron sandstone,quartz,surface exposure,ROCK SURFACE-TEMPERATURE,HEAT-CAPACITY,DUNE SANDS,TRANSITION,HEMATITE},
  language     = {eng},
  number       = {5},
  pages        = {518--525},
  title        = {Iron oxides in fractured quartz : development and evolution of iron sandstone layers in the Kinshasa area, DR Congo},
  url          = {http://dx.doi.org/10.1071/sr18062},
  volume       = {56},
  year         = {2018},
}

Altmetric
View in Altmetric
Web of Science
Times cited: