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Origin and Mineralogy of Construction Materials of Gravel and Sand in Tikrit Area | ||
| Journal of Tikrit University for the Humanities | ||
| Article 1, Volume 18, Issue 8, 2011, Pages 439-450 | ||
| Authors | ||
| Amera Ismail Hussain; Dr. Lafta Salman Kadem | ||
| Abstract | ||
| ABSTRACT Gravel and sand deposits forming thick layers of immature sediments represent terraces around the banks of Tigris river which where deposited during the Quaternary time . The gravel are mostly formed of carbonate with percentage (37-41.5)% , sandstone (14-17)% ,quartze and chert (22 - 33)%igneous (7-8)% and metamorphic (6-8)%. The origin of these gravels are mostly derived from the older rocks such as Fatha, Injana and Mugdadia Formations. The shape of the gravel are different according to origin and composition. These deposits mostly immature and forming alluvial thick deposits bodies characterized by many types of sedimentary structures such as cross bedding, trough bedding and channel fillings. The matrix materials forming about 40% of the gravel bodies and formed of particles of coarse sand, gypsiferous particles and silt and clay, which give the immature nature to the gravel bodies .The sand bodies are mostly forming lenses and Tongues bodies which rich in particles of carbonate and fragments of gypsum . The degree of roundness of the gravel are mostly moderate to well round. | ||
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