1. Dunham RJ (1962) Classification of carbonate rocks according to depositional texture. In: Ham WE (ed) Classification of carbonate rocks. Memoirs of the American Association of Petroleum Geologist 1. Tulsa, OK, pp 108–121
2. El Khoriby EM, Issa GHI (1998) Sedimentology and mineralogy of recent continental Sabkha, Siwa depression, Western Desert, Egypt. Egypt J Geol V 42(2):621–640
3. Folk RT (1959) Practical petrographic classification of limestones. AAPG Bull V 43:1–38
4. Gindy AR, El Askary MA (1969) Stratigraphy, structure and origin of Siwa Depression, Western Desert, Egypt. AAPG Bull V 53:603–625
5. Holmes A (1965) Principles of physical geology. Ronald Press, New York, p 1288