Micromorphological Evidences of Basalt and Volcanic Glass Weathering in Semi-arid Soils of Middle Alborz

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RAHEB ALIREZA; HEIDARI AHMAD; KARIMZADEH BAHAREH

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Journal: Iranian Journal of Soil and Water Research Year:2021 | Volume:52 | Issue:2 Page(s): 379-394

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Title

Micromorphological Evidences of Basalt and Volcanic Glass Weathering in Semi-arid Soils of Middle Alborz

Author(s)

RAHEB ALIREZA | HEIDARI AHMAD | KARIMZADEH BAHAREH | Issue Writer Certificate

Keywords

BasaltQ1

Soil FormationQ1

Pedogenic Carbonate EffectsQ1

MicromorphologyQ2

Abstract

Regards that Iran is covered by many arid and semi-arid regions, the formation of soil-pedogenic features are very important and effective to have a better understanding of the topics of the soil sciences in these regions. Parent material is one of the main factors controlling soil properties in arid and semiarid regions. Basalt and volcanic glass are among igneous rocks that contain minerals susceptible to weathering minerals. Their weathering products are deposited as secondary minerals and different cations in the soil and the consumption of weathering products accelerate the weathering, Soil Formation and evolution during these processes. In this study, morphological and physicochemical properties of eight soil profiles formed on Basalt rocks in semiarid region of middle Alborz were investigated and micromorphological properties were studied in six thin sections. Micromorphological observations showed different evidences of the occurrence of weathering processes. Formation of hypocoating and nodules of iron oxide and manganese, cubic microstructure and its evolution in different soils from semi-angular to angular cubic, layered clayey clusters indicating periodic deposition of these. Also, the layers were in favorable conditions, and the formation of a variety of Pedogenic Carbonate Effects such as nodules, coating and hypocoating, cavities filled by micritic and sparite crystals were suggested alternating dry and wet periods, and the effect of these periods on progresses in weathering processes. One of the unanticipated consequences in the micromorphological study was the large volume of clay produced in some soil profiles due to the greater weathering intensity of volcanic glass.

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APA: Copy

RAHEB, ALIREZA, HEIDARI, AHMAD, & KARIMZADEH, BAHAREH. (2021). Micromorphological Evidences of Basalt and Volcanic Glass Weathering in Semi-arid Soils of Middle Alborz. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 52(2 ), 379-394. SID. https://sid.ir/paper/371228/en

Vancouver: Copy

RAHEB ALIREZA, HEIDARI AHMAD, KARIMZADEH BAHAREH. Micromorphological Evidences of Basalt and Volcanic Glass Weathering in Semi-arid Soils of Middle Alborz. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2021;52(2 ):379-394. Available from: https://sid.ir/paper/371228/en

IEEE: Copy

ALIREZA RAHEB, AHMAD HEIDARI, and BAHAREH KARIMZADEH, “Micromorphological Evidences of Basalt and Volcanic Glass Weathering in Semi-arid Soils of Middle Alborz,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 52, no. 2 , pp. 379–394, 2021, [Online]. Available: https://sid.ir/paper/371228/en

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