ECONOMIC GEOLOGY OF BLACK SEDIMENT IN THE SEFIDROOD RIVER MARGINS

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SALAVATI M.; SAHMANI H.; DARVISHZADEH A.

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Journal: JOURNAL OF EARTH AND RESOURCES Year:2010 | Volume:3 | Issue:2 (7) Page(s): 31-40

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Title

ECONOMIC GEOLOGY OF BLACK SEDIMENT IN THE SEFIDROOD RIVER MARGINS

Author(s)

SALAVATI M. | SAHMANI H. | DARVISHZADEH A. | Issue Writer Certificate

Keywords

TITANIUMQ3

COSTAL SEDIMENTQ2

IHMENITE GABBROQ3

Abstract

In the mouth and margin of the Sefidrood river, black sand deposits containing heavy minerals is visible. Field Studies and sampling show that the amount of these sediments gradually decreases from the mouth of the river to upstream other insofar as their effect is not seen so that in the mouth of the river, in the Caspian Sea margin (Delta Sefidrood in Kyashahr) have maximum frequency and in the Rudbar reach to minimum. Based on stereomicroscope studies constituent components of these sediments are: heavy minerals basically titan magnetite, hematite and black ilmenite with quartz, biotite, pyroxene, amphibole, calcite and feldspar. Chemical analysis of these sediments revealed high amounts of TiO2, Ce, La, Ga and Hf in them from this point have chemical similarity to alkaline gabbros mass of region, therefore, it seems that these gabbroic mass are Source of the Sefidrood river black sand deposits. Considering the normative composition of sample and FeO-TiO2-Fe2O3 triangular diagram, their combinations are similar to series of hematite–ilmenite. In which part of the Ti has been entered in the building of Magnetite in which case magnetite contains of Titan can be applied. Based on Laboratory studies, these minerals have formed simultaneously with the formation of Silicate minerals from a magma containing 0 to 12 percent TiO2 and in 1954°C. Titan oxides in the studied black sand are exolusion phase of magnetite and ilmenite that cannot be separated with today modern equipment.

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APA: Copy

SALAVATI, M., SAHMANI, H., & DARVISHZADEH, A.. (2010). ECONOMIC GEOLOGY OF BLACK SEDIMENT IN THE SEFIDROOD RIVER MARGINS. JOURNAL OF EARTH AND RESOURCES, 3(2 (7)), 31-40. SID. https://sid.ir/paper/164362/en

Vancouver: Copy

SALAVATI M., SAHMANI H., DARVISHZADEH A.. ECONOMIC GEOLOGY OF BLACK SEDIMENT IN THE SEFIDROOD RIVER MARGINS. JOURNAL OF EARTH AND RESOURCES[Internet]. 2010;3(2 (7)):31-40. Available from: https://sid.ir/paper/164362/en

IEEE: Copy

M. SALAVATI, H. SAHMANI, and A. DARVISHZADEH, “ECONOMIC GEOLOGY OF BLACK SEDIMENT IN THE SEFIDROOD RIVER MARGINS,” JOURNAL OF EARTH AND RESOURCES, vol. 3, no. 2 (7), pp. 31–40, 2010, [Online]. Available: https://sid.ir/paper/164362/en

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