Martiya Sadeghi

Geological Survey of Sweden

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Anna Ladenberger

Geological Survey of Sweden

Clemens Reimann

Norwegian Geological Survey

Manfred Birke

Federal Institute for Geosciences and Natural Resources

Philippe Négrel

Bureau de Recherches Géologiques et Minières

Alecos Demetriades

Institute of Geology and Mineral Exploration

Stefano Albanese

University of Naples Federico II

A. Lima

Universidade Federal Rural de Pernambuco

Madelen Andersson

Geological Survey of Sweden

Benedetto De Vivo

University of Naples Federico II

Emmanuel John M. Carranza

University of KwaZulu-Natal

Cooperative Institutions

Gemalto (Israel)

Geological Survey of Sweden

Norwegian Geological Survey

University of Johannesburg

Geological Survey of Finland

Departamento de Ciência e Tecnologia

Bureau de Recherches Géologiques et Minières

TU Bergakademie Freiberg

Federal Institute for Geosciences and Natural Resources

Australian National University

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Multifractal analysis of stream sediment geochemical data: Implications for hydrothermal nickel prospection in an arid terrain, eastern Iran

Journal of Geochemical Exploration (2016)

Mohammad Parsa Abbas Maghsoudi Mahyar Yousefi Martiya Sadeghi

Multifractal system

Outcrop

10.1016/j.gexplo.2016.11.013

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Citations (55)

Bioavailable 87Sr/86Sr in European soils: A baseline for provenancing studies

The Science of The Total Environment (2019)

Jurian Hoogewerff Clemens Reimann Henriëtte Ueckermann Robert Frei Karin Margarita Frei

10.1016/j.scitotenv.2019.03.387

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Citations (113)

The Gol‐e‐Zard Zn‐Pb Deposit, Lorestan Province, Iran: a Metamorphosed SEDEX Deposit

Acta Geologica Sinica - English Edition (2014)

Alireza Zarasvandi Mona Sameti Martiya Sadeghi Fatemeh Rastmanesh H Pourkaseb

Abstract The Gol‐e‐Zard Zn‐Pb deposit is one of several sediment‐hosted Zn‐Pb deposits found in the central part of the Sanadaj‐Sirjan Zone, known as the Isfahan‐Malayer belt, western Iran. Mineralization occurs in Upper Triassic to Jurassic phyllites and meta‐sandstones. Sphalerite and galena are the most abundant metallic ores, with minor chalcopyrite. Calcite and quartz are the main gangue minerals. Fissure filling, replacement textures and especially mineralized faults, suggest an epigenetic stage in the Gol‐e‐Zard deposit formation. Geochemical studies of mineralized rocks show high concentrations of Zn, Pb and Cu, (Zn and Pb > 10000 ppm and Cu average 3000 ppm). LREE enrichment (LREE>HREE, La/Lu average 1.44) and positive Eu anomalies (Eu/Eu*>1 average 1.67) indicate reducing conditions during the deposition of deposit. However, some samples do not display negative Ce anomalies, which indicate that localized oxidizing conditions are also present. This study indicates that the Gol‐e‐Zard deposit formed due to circulating hydrothermal fluids in a marine environment. A SEDEX‐type genesis, which is defined by circulating hydrothermal fluids through sediments in a marine environment, and syngenetic precipitation of Zn and Pb sulphides, is suggested for the Gol‐e‐Zard deposit. Emplacement of some granitoid intrusions such as the Aligudarz granitoid intrusion remobilized mineralizing fluids and metamorphosed the Gol‐e‐Zard deposit.

Gangue

10.1111/1755-6724.12188

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Citations (7)

Major and trace element composition of urinary stones, Khuzestan province, southwest, Iran

Journal of Geochemical Exploration (2012)

Alireza Zarasvandi M Heidari Martiya Sadeghi E. Mousapoor

Positive correlation

Trace element

10.1016/j.gexplo.2012.08.014

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Citations (17)

Critical metals in Iran – Geochemistry: Exploration and Analysis

Journal of Geochemical Exploration (2017)

Martiya Sadeghi Peyman Afzal Kathryn Goodenough

10.1016/j.gexplo.2017.08.009

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Citations (2)

Rare earth element signatures of economic and sub-economic porphyry copper systems in Urumieh–Dokhtar Magmatic Arc (UDMA), Iran

Ore Geology Reviews (2015)

Alireza Zarasvandi Mohsen Rezaei Martiya Sadeghi David R. Lentz Mansour Adelpour

Back-arc basin

10.1016/j.oregeorev.2015.01.010

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Citations (74)

REE contents in solid sample media and stream water from different geological contexts: Comparison between Italy and Sweden

Journal of Geochemical Exploration (2012)

Paola Petrosino Martiya Sadeghi Stefano Albanese Madelen Andersson A. Lima

Subsoil

Topsoil

10.1016/j.gexplo.2012.12.008

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Citations (22)

Joint inversion of gravity, magnetic, and petrophysical data — A case study from a gabbro intrusion in Boden, Sweden

Geophysics (2015)

Jochen Kamm Ildikó Antal Lundin Mehrdad Bastani Martiya Sadeghi Laust B. Pedersen

We have studied a gabbro intrusion in northern Sweden, using 3D inversion of airborne magnetic data, ground-based gravity data, and petrophysical measurements on outcrop samples. Gabbro intrusions are of interest because they are potential hosts of Cu-Ni and platinum group element mineralization. We developed a joint inversion algorithm and applied it to both potential-field data sets to obtain spatial distributions of density and magnetic susceptibility. The distributions were coupled through a nonrigidly enforced parameter relationship determined from the petrophysical samples. We managed the problem of balancing the influence of the two data sets by a novel adaptive reweighting scheme that enforced the discrepancy principle for each data set independently. We demonstrated in tests with synthetic data that neither individual nor joint inversions gave reliable estimates for the depth extension of the intrusive body, the near-surface details, or any complex geometrical features. However, the joint inversion improved the image of the interface between the intrusion and the surrounding rocks and revealed that the density and susceptibility models satisfied the observed petrophysical relationship, which, in turn, caused the structures in the models to align. The geometry of the intrusion was an intrinsic result of the inversion, based on the two distinct petrophysical trends for the gabbro and the surrounding rocks. The inferred shape was simple and concise, and was therefore a useful and testable hypothesis about the subsurface geology that was in agreement with both potential-field data sets and the petrophysical information.

Petrophysics

Outcrop

10.1190/geo2014-0122.1

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Citations (68)

Prospectivity modeling of porphyry-Cu deposits by identification and integration of efficient mono-elemental geochemical signatures

Journal of African Earth Sciences (2015)

Mohammad Parsa Abbas Maghsoudi Mahyar Yousefi Martiya Sadeghi

Prospectivity mapping

Prospecting

Mineral exploration

Identification