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Publications (37)
We present U-Pb zircon crystallization ages combined with major and trace element analyses, Sr-Nd isotopes and zircon in-situ Hf isotope analyses of intermediate to granitic intrusions along the southern segment of the N-S trending Sistan Suture Zone in eastern Iran. The Zahedan and Shah-Kuh Eocene plutons consist in a series of granite-granodiorit...
A multidisciplinary provenance study, including sandstone framework, heavy mineral analysis, in situ U-Pb dating of detrital zir-con, and Hf isotopic ratio analysis of dated zircons, was undertaken on Late Cretaceous– Miocene deep-marine turbiditic and deltaic sandstones of Makran accretionary wedge, SE Iran, to determine their sedimentary provenan...
The north-south-trending Sistan suture zone in east Iran results from the Paleogene collision of the Central Iran block to the west with the Afghan block to the east. We aim to document the tectonic context of the Sistan sedimentary basin and provide critical constraints on the closure time of this part of the Tethys Ocean. We determine the provena...
The present work aims to contribute to the Cenozoic tectonic setting of the western part of the Makran Accretionary Wedge in SE Iran. We determine the provenance of both deep marine turbiditic and deltaic-shelf Late Cretaceous-Miocene sandstones, describe the sandstone modal framework and heavy minerals and report a new geochronological and isotopi...
Cover Photo: A mechanically reworked halite and silt succession with cross-bedding structure in the exposed salt crust of the eastern coast of Urmia Lake (see Mohammadi, 2024; DOI: 10.2110/jsr.2024.070).
Urmia Lake resides as a substantial hypersaline lake characterized by notable fluctuations in water salinity, brine composition, and water level over long-term, annual, and seasonal intervals. Extremely rapid water elevation fall (. 7 m) in the last three decades has caused the formation of a salt crust on the lake floor. A manmade stone causeway d...
An intricate association between weathering and erosional processes is largely controlled by climate disparities.
Weathering as a predisposing process for natural hazards, landform evolution, and sediment mobility, hosts key
uncertainties in our understanding of how climate controls differential weathering types and rates. Here, we
investigate how...
On September 29, 2021, Cyclone Shaheen attained significant development in the Arabian Sea. It proceeded to cross the Gulf of Oman on October 3, causing substantial economic damage and
casualties due to the heavy rain and high waves it generated. Using meteorological and satellite data, measuring the physical and chemical properties of the water co...
Seismic interpretation is primarily concerned with accurately characterizing underground geological structures & lithology and identifying hydrocarbon-containing rocks. The carbonates in the Netherlands have attracted considerable interest lately because of their potential as a petroleum or geothermal system. This is mainly because of the discovery...
Within the Tethyan belt, the NW-Iranian block is bound by two sutures, the Sevan-Akera suture in the north, and the Zagros suture in the south, where the pre-Cambrian geology is poorly constrained. Lower-Middle Cambrian sandstone in NW Iran is represented by quartz and feldspar dominated sub-arkose and sub-litharenite with well-developed cross bedd...
A 25 m long sediment core from hypersaline Urmia Lake (north‐west Iran) was studied for the Late Quaternary depositional history and palaeoclimate variations using the abundance and compositional characteristics of Artemia fecal pellets. Sediment analysis is supported by scanning electron microscopy – energy dispersive X‐ray spectroscopy, organic a...
The Sakarya Zone of northern Turkey contains a well-preserved Early–Middle Jurassic and Late Cretaceous submarine magmatic arc constructed over pre-Jurassic bedrocks that are considered to be the eastward extension of the Armorican Terrane Assemblage in Europe. In this study, we present U-Pb-Hf isotopic data from the detrital zircons of middle Perm...
Sediments deposited into foreland basins can provide valuable insights related to the geological evolution of their hinterlands. Located in the peripheral foreland of the South Sistan Suture Zone (SE Iran), the Karvandar Basin exhibits a several‐kilometer‐thick shallow‐marine to continental clastic sedimentary sequence forming elongated sub‐circula...
The Hormuz Strait and Makran coastal plains in southeast Iran are significant sources of dust storms in south Asia due to an arid climate with a strong wind regime, low topography, poor vegetation cover, and large watersheds with available loose fine-grained sediments. However, their sedimentology, mineralogy, and geomorphic landforms are poorly st...
The NNW Iranian Plateau and west Alborz within the Arabia‐Eurasia collision zone are characterized by three main tectono‐stratigraphic zones, crosscut by the Qezel‐Owzan River (QOR) Basin. The interplay between present‐day deformation and climate, which control the landscape evolution of the region, is still poorly constrained. We addressed this ga...
Over time, river networks achieve a specific pattern as determined by the function of several factors such as climate, tectonic, geological structures, topography, lithology, and base-level fluctuations. The relative importance of mentioned factors on drainage systems was studied to determine the controlling factors of their heterogeneity across th...
The N-S-trending Sistan Suture Zone in East Iran results from the collision of the Lut and Afghan continental blocks. The southern Sistan Basin hosts Eocene terrigenous deep-marine turbiditic sequences with carbonate olistoliths, debris-flow sheets and calcareous turbidites. These carbo-nates represent one or several early to middle Eocene carbonat...
The northwest-southeast-trending Zagros Fold-and Thrust Belt in south Iran resulted from the late Oligocene to
the early Miocene collision of the Arabian and Central Iran blocks. The Zagros Palaeozoic basin holds the key to
reveal the tectonic setting of the earlier stages in the development of the Tethyan realm. We aim to document the
Palaeozoic t...
In this study, we present pollen records together with a multiproxy analysis from a sediment core collected from the Güllük Bay (Bargilya Cove, Muğla, SW Turkey), covering the last 400 years. Pistachio shrubland was occupying around the Güllük Bay between 1613 and 1741 AD. However, after 1741 AD, the vegetation canopy suddenly changed and Turkish p...
Arctic warming and permafrost thaw visibly expose changes in the landscape of the Lena River delta, the largest Arctic delta. Determining the past and modern river regime of thick deltaic deposits shaping the Lena River mouth in north‐eastern Siberia is critical for understanding the history of delta formation and carbon sequestration. Using a 65 m...
The Kopet Dagh mountains in NE Iran exhibit a 7-km-thick continuous
sedimentary sequence recording detritus from exposed surrounding terranes
from the last 175 Ma. This work presents a multi-disciplinary geochronologic and
provenance analysis in an attempt to identify and date major geologic events along
the northern segment of the Tethys and recon...
Lake Urmia is presently the second-largest hypersaline lake on Earth and is in NW Iran. The lake experiences an extremely rapid water level fall of about 6 m in the last two decades due to human intervention. The rapid water level fall has affected the lake area, the water volume, the lake water composition, and the brine type. To investigate human...
The configuration and timing of the Arabia‐Eurasia continental collision, part of the broader Alpine‐Himalayan collisional system, remains controversial. We conducted sandstone petrology, detrital zircon U‐Pb‐Hf isotopic and trace element analysis, and Cr‐spinel electron microprobe geochemical analysis of samples from Paleocene to Miocene periphera...
Cover Photo: Gypsum–halite mounds from the hypersaline Urmia Lake. Mounds form in the dry season when salinity increases. Black cyanobacterial mats around the mounds contribute to their formation. (see Mohammadi, 2021; v. 91, 296-316 DOI: 10.2110/jsr.2020.078).
Urmia Lake is a large-scale hypersaline lake that experienced a drastic water-level fall due to natural and anthropogenic forces during the last two decades. Construction of a causeway in the central part of the lake after 1989 has divided the lake into northern and southern parts and caused an extreme change of the lake hydrochemical system. Preci...
The present research was conducted to determine the morphometry, morphology, and temporal and spatialbehavior of individual barchans in the Lut Desert in Iran. This region is one of the driest places in the world andthere is a little information about the geomorphology of this region, especially on the barchans. Therefore, herein,a total of 391 ind...
Provenance analysis including sandstone modal compositions, heavy mineral assemblages, and LA-ICP-MS U-Pb dating with in-situ Hf isotopic compositions of detrital zircons defines two types of Late Cretaceous-Eocene turbiditic sequences separated by the Siah Cheshmeh-Khoy-Misho-Tabriz Fault in the Azerbaijan Province, Northwest Iran: (1) Volcaniclas...
We present zircon U-Pb crystallization ages combined with bulk rock major and trace element geochemistry and Sr-Nd-Pb and zircon in-situ Hf isotopic compositions of the Amand and Moro granitoid intrusions in northwest Iran. The Amand and Moro plutons include granite and syeno-diorite with LA-ICP-MS U-Pb zircon ages of 367 ± 6.8 Ma and 351 ± 1.3 Ma,...
Cover: tight folding of an Oligocene pyroclastic turbidite sequence of the onshore Makran Accretionary Wedge close to Nikshahr, SE Iran. In the right part of the picture, asymmetric ripple marks indicate the normal younging direction of the sedimentary sequence. The anticline in the left part of the picture nicely shows the competence difference be...
Coupling between tectonics and surface processes is usually ill quantified as other factors such as climate and lithology affect the latter. We provide catchment‐wide ¹⁰Be denudation rates of the Mand catchment in the Zagros Fold Belt (Iran) to infer correlations between these rates and ongoing tectonic shortening in the region. Denudation rates ar...
Previous interpretations of a Jurassic subduction in Iran were based on trace element classification diagrams for granitoids, but their reliability is questionable, underscored by modern examples of continental break-up zones such as the Baja California. We present new field observations, bulk rock geochemistry, Sr and Nd isotope analyses and U–Pb...
The present work aims to contribute to the Cenozoic tectonic setting of the western part of the Makran Accretionary Wedge in SE Iran. We determine the provenance of both deep marine turbiditic and deltaic-shelf Late Cretaceous-Miocene sandstones, describe the sandstone modal framework and heavy minerals and report a new geochronological and isotopi...
The Permian volcanics of Central Alborz (PVCA) crop out between the Ruteh and Nesen Formations in the Baladeh-Siahbisheh area. The volcanics are predominantly basaltic and plagioclase-phyric. Ferromagnesian minerals such as clinopyroxene and olivine are not modally abundant and sometimes are totally altered. Chemical composition of clinopyroxene is...
The temporal evolution of the Zagros Simply Folded Belt is constrained by a magnetostratigraphic sequence containing a progressive unconformity on the southern limb of the Kuh-e Ghol Ghol anticline, in the Central Fars. The investigated ~1400 m thick sequence exposes a regressive mega-cycle containing, from bottom to top, open and shallow marine ma...
