GEOCHEMICAL CLASSIFICATION AND CHARACTERIZATION OF THE BEACH SANDS OF ABU DHABI, UNITED ARAB EMIRATES: A COMBINATION OF CLUSTER AND DISCRIMINANT ANALYSIS

Saeed Al Rashedi; Abdi Siad

doi:10.17721/1728-2713.71.05

Authors

Saeed Al Rashedi Department of Earth Sciences University of the Western Cape, CapeTown, SouthAfrica
Abdi Siad Department of Earth Sciences University of the Western Cape, CapeTown, SouthAfrica

DOI:

https://doi.org/10.17721/1728-2713.71.05

Keywords:

beach sand, shoreline, geochemical compositions, X-ray analysis

Abstract

Fifty seven beach sand samples were collected along the shoreline of Abu Dhabi, United Arab Emirates (UAE). The aim of the paper is to geochemically classify and characterize the beach sediments of Abu Dhabi. Their geochemical compositions were determined, using X-ray fluorescence analysis. A combination of cluster and discriminant analysis was applied to classify and characterize the beach sand. Cluster analysis produced a dendogram with two major beach sand types namely terrigenous and marine sand types. Each sand type were further subdivided into two and was characterized through discriminant. The terrigenous sand type was subdivided into allumino-silicate characterized by SiO2, Al2O3, K2O and TiO2 and heavy mineral-rich allumino-silicate through high content of Fe2O3, Cr2O3, MgO and MnO, while the marine sand type was subdivided into biogenic marine carbonate with high content of CaO and LOI and halite-rich biogenic carbonate marine sand types with Na2O in addition CaO and LOI. Through stepwise discriminant analysis it was possible to identify SiO2 and Fe2O3 as best discriminating geochemical variable for the four sand types by 100%.

References

Carranza–Edwards, A., Kasper–Zubillaga, J.J., Rosales–Hoz, L., Morales–de la Garza, E.A., Lozano–Santa, R. (2009). Beach sand composition and provenance in a sector of the southwestern Mexican Pacific. Rev. mex.cienc. geol. (Vol. 26, no. 2). México.

Carranza-Edwards, A. (2001). Grain size and sorting in modern beach sands. Journal of Coastal Research, 17(1), 38-52.

Carranza-Edwards, A., Rosales-Hoz, L. (1995). Grain-size trends and provenance of southwestern Gulf of Mexico beach sands. Canadian Journal of Earth Sciences, 32(12), 2009-2014. doi:10.1139/e95-153

Carranza-Edwards, A., Rosales-Hoz, L., Santiago-Pérez, S. (1994). Provenance memories and maturity of holocene sands in Northwest Mexico: Canadian. Journal of. Earth Science, 31(10), 1550-1556.

Casado-Martinez, M.C., Forja, J.M., DelValls, T.A. (2009). A multivariate assessment of sediment contamination in dredged materials from Spanish ports. Journal of Hazardous Materials, 163, 1353–1359.

Chung, C.Y., Chen, J.J., Lee, C.G., Chiu, C.Y., Lai, W.L. et al. (2011). Integrated estuary management for diffused sediment pollution in Dapeng Bay and neighboring rivers (Taiwan). Environmental Monitoring and Assessment, 173, 499–517.

Folk, R.L. (1974). Petrology of Sedimentary Rocks. (182 pp.). Austin, Texas, Hemphill Publishing Co.

Ibbeken, H., Schleyer, R. (1991). Source and Sediment. (286 pp.). Berlin, Springer-Verlag.

Lugo–Hupb, J., Vidal–Zepeda, R., Fernández–Eguiarte, A., GallegosGarcía, A. Zavala–Hidalgo, J. (1990). Hipsometría y batimetría, Hoja I.1.1, escala 1:4,000,000. In Atlas Nacional de México. (Tomo I). 1. Mapas Generales: México, D.F., Universidad Nacional Autónoma de México, Instituto Nacional de Estadística, Geografía e Informática (INEGI), 1 map.

Kasper-Zubillaga, J.J., Carranza Edwards, A. (2005). Grain size discrimination between sands of desert.

Kasper-Zubillaga, J.J., Carranza-Edwards, A., Rosales-Hoz, L. (1999). Petrography and geochemistry of Holocene sands in the western Gulf of México: implications of provenance and tectonic setting. Journal of Sedimentary Research, 69(5), 1003-1010.

Klitgord, K.D., Mammerickx, J. (1982). Northern East Pacific Rise: magnetic anomaly and bathymetric framework. Journal of Geophysical Research, 87(B8), 6725-6750.

Komar, P.D. (1976). Beach Processes and Sedimentation. (429 pp.). New Jersey, Prentice-Hall.

Le Pera, E., Critelli, S. (1997), Sourceland controls on the composition of beach and fluvial sand of the northern Tyrrhenian coast of Calabria, Italy: implications for actualisticpetrofacies. Journal of Sedimentary Research, 110(1-2), 81-97.

Plumb, R.H. (1981). Procedures for Handling and Chemical Analysis of Sediment and Water Samples. U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS.

Rath, P., Panda, U.C., Bhatta, D., Sahu, K.C. (2009). Use of sequential leaching, mineralogy, morphology and multivariate statistical technique for quantifying metal pollution in highly polluted aquatic sediments—a case study: Brahmani and Nandira Rivers, India. Journal of Hazardous Materials, 163, 632–644

Siad, A.M., Matheis, G., Utke, A., & Burger, H. (1994). Discriminant analysis as a geochemical mapping technique for lateritic covered areas of Southwestern and Central Nigeria. ITC Journal, (1), 7-12.

Simeonov, V., Massart, D.L., Andreev, G., Tsakovski, S. (2000). Assessment of metal pollution based on multivariate statistical modeling of hot spot sediments from the Black Sea. Chemosphere, 41, 1411–1417.

Sundaray, S.K., Nayak, B.B., Lin, S., Bhatta, D. (2011). Geochemical speciation and risk assessment of heavymetals in the river estuarine sediments—a case study: Mahanadi basin, India. Journal of Hazardous Materials, 186, 1837–1846.

Yang, Z., Wang, Y., Shen, Z., Niu, J., Tang, Z. (2009). Distribution and speciation of heavy metals in sediments from the mainstream, tributaries, and lakes of the Yangtze River catchment of Wuhan, China. Journal of Hazardous Materials, 166, 1186–1194.