THE ROLE OF MINERALOGICAL AND STATISTICAL ANALYSES OF SEDIMENTS IN SOURCE STUDIES OF SHANDAN-SARAVAN SAND DUNES, BALOO CHESTAN

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DEHVARI A.; FEYZNIA S.; AHMADI HASAN

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Paper Information

Journal: IRANIAN JOURNAL OF NATURAL RESOURCES Year:2006 | Volume:58 | Issue:4 Page(s): 743-758

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Title

THE ROLE OF MINERALOGICAL AND STATISTICAL ANALYSES OF SEDIMENTS IN SOURCE STUDIES OF SHANDAN-SARAVAN SAND DUNES, BALOO CHESTAN

Author(s)

DEHVARI A. | FEYZNIA S. | AHMADI HASAN | Issue Writer Certificate

Keywords

SOURCE STUDIES OF ERGQ4

SAND DUNESQ4

MINERALOGYQ4

DEFLATION ZONEQ4

SARAVANQ4

SHANDANQ4

PRIMARY SOURCEQ4

DEFLATION ENVIRONMENTQ4

Abstract

Samples taken from lithological units and SAND DUNES in point grid, were analyzed through morphoscopic and mineralogical studies. The same-sized maps of SAND DUNES were then drawn by using statistical parameters of grains. Maps and distribution of statistical parameters show that grain size decreases from 0.37 mm in west to 0.18 mm in east through Erg. Also there is an increase in the degree of sorting and roundness in this direction. The coarsest particles are found in ripple marks as well as in sand sheets whereas nebkas contain the finest ones. According to the relationship between grain size and their transportation distances by winds, the first accumulation phase (D1) is 3 km far from the erg. Based 01) microscopically results, rock fragments make up 85%, whereas minerals makeup 15% of grains including quartz, feldspar and calcite. According to X-ray diffraction and Electron Microscope Scanning, quartz frequency relates to quartzose-sandstones, calcite: frequency's related to fleshed limestone with clay minerals having originated: from shale sources. In the second sedimentation phase (D2) or erg, 98.54% of sands have been transported through salutation, while only 1.2 %, and. 0.26% through suspension and creep processes respectively. According to morphscopic analysesby using binocular and SEM photos of quartz and results: from Friedman's Diagram, 80% of sands were shown to be transported by collaboration of water and wind, while only 20% by water alone. This indicats that water is an important agent in semi-arid bioclimatical zones. Finally, based on mineralogical studies, the most important sources of SHANDAN SAND DUNES are recognized as SARAVAN lithological units (ES3, ES4) as well as Zaboli lithological unit (EZ) with other units having little effect in sand production for the erg.

Cites

INVESTIGATION ON GRANULOMETRY AND MINERALOGY OF SEDIMENTS FOR SOURCE IDENTIFICATION OF BALUCHESTAN SAND DUNES

References

منشایابی رسوبات بادی تپه ماسه های حوزه آبخیز روتک سراوان در منطقه بلوچستان

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APA: Copy

DEHVARI, A., FEYZNIA, S., & AHMADI, HASAN. (2006). THE ROLE OF MINERALOGICAL AND STATISTICAL ANALYSES OF SEDIMENTS IN SOURCE STUDIES OF SHANDAN-SARAVAN SAND DUNES, BALOO CHESTAN. IRANIAN JOURNAL OF NATURAL RESOURCES, 58(4), 743-758. SID. https://sid.ir/paper/23020/en

Vancouver: Copy

DEHVARI A., FEYZNIA S., AHMADI HASAN. THE ROLE OF MINERALOGICAL AND STATISTICAL ANALYSES OF SEDIMENTS IN SOURCE STUDIES OF SHANDAN-SARAVAN SAND DUNES, BALOO CHESTAN. IRANIAN JOURNAL OF NATURAL RESOURCES[Internet]. 2006;58(4):743-758. Available from: https://sid.ir/paper/23020/en

IEEE: Copy

A. DEHVARI, S. FEYZNIA, and HASAN AHMADI, “THE ROLE OF MINERALOGICAL AND STATISTICAL ANALYSES OF SEDIMENTS IN SOURCE STUDIES OF SHANDAN-SARAVAN SAND DUNES, BALOO CHESTAN,” IRANIAN JOURNAL OF NATURAL RESOURCES, vol. 58, no. 4, pp. 743–758, 2006, [Online]. Available: https://sid.ir/paper/23020/en

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