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Geology

 

Hill, C. R. and El-Khayal, A. A. (1983): Late Permian plants including charophytes from the khuff formation of Saudi Arabia. Bull. Br. Mus. Nat. Hist. (Geol)., 37 (3): 105-112.

 

 

El-Khayal, A. A. and Wagner, R. H.  (1983): Upper Permian

stratigraphy and megafloras of Saudi Arabia: Palaeogeo-graphic and climatic implic-ations . C. R. X. Congr. Int. Strat. Geol. Carbonifene, Madrid, 3(1983): 17-26.

 

 

Okla, S. M. (1983):  Microfacies of Hanifa formation (upper Jurassic) in central Tuwaiq Mountains. J. Coll. Sci. King Saud Univ., 14(1): 121-143.

 

 

 

Okla, S. M. (1984): Microfacies of the Jubaila limestone (upper Jurassic) in central Tuwaiq Mountains. J. Cool. Sci. K. S. Univ. , 15(2): 507-525.

 

  

Okla, S. M. (1984): Some Microfacies of Tuwaiq Mountain limestone (upper Jurassic) in central Tuwaiq Mountains.

Arab Gulf J. Scient. Res. 2(2): 483-494.

  

 

 

 

Hill, C. R.,  Wagner, R. H. and El-Khayal, A. A. (1985): Qasimia gen. nov., an early marattialike fern from the Permian of Saudi Arabia .  Scripta Geol. , 79: 1-50.

  

 

 

 

Wagner, R. H.,  Hill, C. R. and  El-Khayal, A. A. (1985): Gemellitheca gen. nov. , afertile pecopterid fern from the upper Permian of the Middle East . Scripta Geol., 79: 51-74.

 

 

 

 

El-Khayal, A. A. (1985): Occurrence of a characteristic Wealden fern (Weichselia reticulate) in the Wasia formation, central Saudi Arabia. Scripta Geol., 79: 75-88.

 

 

 

 

El- Asaad, G. M. A. (1989): Callovian colonial from the Towaiq mountain limestone of Saudi Arabia. Palaeontology, 32(3): 675-684.

  

 

 

 

Al-Bassam, A. A. (1999).  Lattice parameters and optical absorption of Culn1-xGax Se2 thin films. Can. J. Phys. , 77(1999): 515-520.

 

 

 

 

Al-Bassam, A. A. (1999). Schottky barriers in Cd 1-x  Znx  Se mixed crystals with X=0.5 and X= 0.55. World Renewable Energy Congress VI 1-7-2000. 

 

 

   

 

 

 

 

 
 

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