Geochemistry - Science topic

Water is one of the most essential commodities for mankind, and the largest available source of fresh water lies underground. This is an important Special Issue for researchers of hydrogeology and hydrogeophysics and a valuable reference for practicing geologists, hydrologists, geophysicists, and others who professionally use hydrological and hydro...

Dear young geoscientists, in occasion of the conference "Sustainability and risk: BeGEO scientists on the road to the future" to be held in Naples from 3 to 6 October 2023, we would like to invite all MSc students, PhDs, post-docs and early career researchers working in the field of environmental sciences to present their contribution for the sess...

The geochemistry of arc magmas can shed light on chemical outfluxes from subducting slabs to the overlying mantle. Boron (B) abundances and isotope ratios are valuable tracers of slab-derived components due to the distinct compositions of the mantle and subducting materials and distinctive isotopic fractionation during dehydration. New Be/B and δ11...

Petrology and geochemistry of Kyandamu diamictite (Rep Dem of Congo). paleogeographic implication

In the Gasht-Masuleh area in the Alborz Mountains, gabbroic magma intruded Palaeozoic metasediments and Mesozoic sediments and crystallised as isotropic and cumulate gabbros. LREE enrichment points to relatively low degrees of mantle melting and depletion of Ti, Nb and Ta relative to primitive mantle points to an arc related component in the magm...

The improvement of water management requires monitoring techniques that accurately evaluate water quality status and detect the effects of land use changes on water chemistry. This study aimed to evaluate how multivariate statistical methods and water quality indices can be applied together to evaluate the processes controlling water chemical compo...

Organic matter types in the Taodonggou Group mudstone exhibit significant differences with depth. In order to understand the formation mechanism of this special phenomenon, we analyzed the mineralogy and geochemistry of the mudstone, as well as the source rocks, depositional environment, and depositional processes of the Taodonggou Group. Based on...

This study exposes the complexity of the hydrological functioning of the two Jurassic and Cretaceous karstic systems in the El-Bared watershed. It qualifies geochemistry as an indicator of this functioning. Our study is based on two approaches (hydrodynamic, hydrogeochemical) in order to study the water characteristics and the flow mode in the wate...

Shared coordination geometries between metal ions within reactive minerals and enzymatic metal cofactors hints at mechanistic and possibly evolutionary homology between particular abiotic chemical mineralogies and biological metabolism. The octahedral coordination of reactive Fe 2+/3+ minerals such as green rusts, endemic to anoxic sediments and th...

Os Granitoides Sanga do Areal (GSA) são representativos do magmatismo neoproterozoico do período pós-colisional na Região de Quitéria (RS) e estão associados temporal e espacialmente aos Granitoides Arroio Divisa (GAD). O estudo da evolução magmática dessa suíte tem sido de grande interesse. A questão central é determinar se o GSA é resultado da di...

El Complejo Migmatítico de la Cocha-Río Téllez está localizado en el flanco oriental de los Andes Colombianos, entre los departamentos de Nariño y Putumayo. Aflora a manera de ventanas entre depósitos volcánicos y fluvio-volcánicos recientes. Bajo la denominación de Complejo Migmatítico La Cocha-Río Téllez se agruparon granitoides, gneises de cuarz...

La Grotta Nera è una delle grotte più famose e peculiari d'Italia per la presenza di imponenti speleotemi di moonmilk (latte di monte). Questa grotta rappresenta un modello perfetto per studiare la com-plessità delle interazioni tra geochimica e microbiologia coinvolte nei processi di biomineralizzazione della calcite e per fornire collegamenti tra...

Bedrock sampling over large regions (∼1000 km2) is challenging due to time and cost constraints and is especially problematic when large parts of those regions are covered by glacial ice, limiting exposure, or are generally inaccessible. Here, we demonstrate that igneous cobbles from modern river bars can be sampled, and then analyzed for age and g...

The organic-rich shale in the first member of the Qingshankou Formation, which is located in the southern Songliao Basin, is regarded as a high-quality source rock in East China. Geochemistry parameters were utilized to illustrate the formation and preservation conditions of the Qing1 Member in the Changling Sag, southern Songliao Basin. In the pre...

A present study was carried out to examine the quality of groundwater of Taluka Hyderabad Rural, District Hyderabad, Sindh Pakistan. A total of 80 samples were collected during July 2020 and analyzed for 22 different physicochemical parameters. The samples were evaluated for contamination index (Cd) and water quality index (WQI). The groundwater wa...

Pontide Orogenic Belt represents the northern Anatolian segment of the Alpine-Himalayan Belt. Amalgamation of Strandja Massif, İstanbul and Sakarya Zones, seperated from each other with oceans, consitute this belt. Central Pontides is located in central part of the Sakarya Zone. The basement is composed of Variscan metamorphic units, Paleozoic gran...

The tectonic evolution of the Paleo-Asian Ocean (PAO) has been well studied, including its gradual narrowing and closure by subduction. However, aspects of the tectonic evolution of the oceanic domain remain unclear, including the exact timing and nature of the closure. The Central Asian Orogenic Belt (CAOB) was formed by the closure of the PAO and...

The study of a clastic and carbonate rock depositional model in a continental rift basin is helpful to better understand the sedimentary processes active in continental rift basins. However, the spatiotemporal evolution characteristics and controlling factors of clastic and carbonate rocks in continental rift basins are still unclear. Therefore, th...

The current research dealt with the mineralogical and geochemical characteristics of the detrital chromite mineral in the sandstone from the Gercus Formation (Middle Eocene). Three sections of the north of Iraq were selected to identify the nature and type of the source rocks and the tectonic setting. Detrital chromite is found in high concentrat...

ABSTRACT-This study aims to determine and investigate the provenance of the source rocks and the depositional setting of the Kikhla Formation, Lower Cretaceous, northwestern Libya. It is mainly composed of mature quartzitic sandstone alternating with conglomerate and clay. The study proved that the sandstone is yellow-white in color and commonly ca...

Within the proposal of secular evolution of the Earth system divided into seven phases: “Proto-Earth” (4.57–4.45 Ga); “Primordial Earth” (4.45–3.80 Ga); “Primitive Earth” (3.8–3.2 Ga); “Juvenile Earth” (3.2–2.5 Ga); “Youthful Earth” (2.5–1.8 Ga); “Middle Earth” (1.8–0.8 Ga); and “Contemporary Earth” (since 0.8 Ga), the 2.61-2.64 Ga High-K, meta- to...

In equatorial and tropical regions, supergene mineral deposits created during water/rock interactions are found. Simply put, these supergene deposits are formed through the accumulation of low solubility ions or through the preservation of primary minerals. The supergene manganese (Mn) deposits are examples of the economic importance associated wit...

The Qareh Qotoo copper deposit has been located in the south of Kerman province and Sanandaj-Sirjan metamorphic belt. Petrologically, the study area has been formed from crystalline limestone, phyllite, amphibolite, serpentinite, green schists, calcareous sediments, tuff and diabase units. The host rocks of copper mineralization in this area are ge...

Landslides present major problems in the mountains and hills of the Atlas of Beni Mellal, Morocco. Therefore, the main objective of the present work is to study the relationship between the geological, geotechnical, and geochemical data of the red layers at risk of landslides and to propose adequate solutions to limit the risk of these landslides....

The influence of mineral dust deposition on soil formation in the mountain critical zone was evaluated at six sites in southwestern North America. Passive samplers collected dust for two years, and representative soil and rock were gathered in the vicinity of each dust sampler. All materials (dust, soil, and rock) were analysed to determine their m...

Deep-seated crustal xenoliths captured by volcanic rocks play a rare opportunity in understanding the composition and evolution of the lower continental crust. Here, we present mineral chemistry, whole-rock major and trace elements and Sr–Nd isotopes, and in-situ zircon U–Pb ages and Hf isotope data for a suite of granulite and biotite gneiss xenol...

Within the Himalayan collisional belt, granites occur along two subparallel belts, namely, the Tethyan Himalayan Sequence (THS) and the Greater Himalayan Crystalline Complex (GHC). In this study, Eocene adakitic rocks and leucogranite are found only in the northern Himalayas, so further research is required to constrain their origin. Here, we prese...

Deep-seated mineralization prediction is an important scientific problem in the area of mineral resources exploration. The 3D metallogenic information extraction of geology and geochemistry can be of great help. This study uses 3D modeling technology to intuitively depict the spatial distribution of orebodies, fractures, and intrusive rocks. In par...

Most primary Sn deposits worldwide are associated with muscovite-bearing peraluminous granites, commonly believed to originate from the partial melting of metasedimentary rocks. We studied the whole-rock geochemistry and Sm–Nd isotopes of Late Cretaceous (~90 Ma) Laojunshan muscovite-bearing peraluminous granites in the Youjiang Basin, South China...

Under the current paradigm, silicic magmas within the upper crust are dominantly stored in a crystal-rich (>50-60% crystals), melt-poor, state. These uneruptible magma mushes require a mechanism by which they can transition to eruptible states (<50-60% crystals). Based on observations of mineral textures and geochemistry, that suggest dissolution p...

The Pingbei area is the main accumulation area of oil and gas in the Xihu Sag. The phase characteristics of oil and gas in this area are complex, and the understanding of their genesis is still unclear. In this paper, based upon discussions of crude oil and natural gas geochemical data, integrated with local geological features, we discuss the sour...

Citation: Siddique, U.; Zeng, Z.; Zhang, F.; Farhan, M.; Wang, C.; Xia, Q.; Gao, X.; Zhang, K.; Gao, Q.; Li, Z. Zircon U-Pb Ages, Petrogenesis, and Tectono-Magmatic Evolution of Late Jurassic-Early Cretaceous Abstract: Northwest Zhejiang area (NWZJ) is one of the important parts of the large Qingzhou-Hangzhou mineralized belt in South China formed...

The general geology of rocks around Dungal was accessed with a view to classify the rocks and determined their tectonic origin using field relationship, petrography and geochem-istry of the rocks. The rocks were classified as migmatite which were further sub divided into metatexite, diatexite, and pegmatitic neosome. Geochemistry indicates that the...

A região de Quitéria está localizada na porção centro-leste do estado do Rio Grande do Sul. Insere-se no contexto geológico do Escudo Sul Rio-grandense, na porção leste do Cinturão Dom Feliciano, mais especificamente no Batólito Pelotas, o qual foi originado nos estágios pós-colisionais da orogenia Brasiliana-Panafricana. Na região as litologias ma...

In a context of accelerated soil erosion and sediment supply to water bodies, sediment fingerprinting techniques have received an increasing interest in the last two decades. The selection of tracers is a particularly critical step for the subsequent accurate prediction of sediment source contributions. To select tracers, the most conventional appr...

The Indian passive margin has preserved several pulses of magmatism during and after the disassembly of Gondwana since the late Paleozoic, providing valuable insights into the long-term magmatic evolution of various passive margins, including the Indian passive margin. In the Yumai Complex, eastern Tethyan Himalaya, a pulse of Late Triassic alkalin...

Gaussian process (GP) regression provides a probabilistic framework for modeling geochemistry in mineral resource estimation and environmental monitoring applications. An issue with this approach is that the kernel hyperparameters obtained by maximizing the log-marginal likelihood (LML) often produce GP posterior mean estimates that are overly smoo...

The purpose of the study is to use geochemical data to determine the petrogenesis and mineralogical potential of the Winneba-Mankoadze pegmatites. The Eburnean Tectono-thermal Event occurred around 2195 Ma and had an impact on the Birimian Supergroup (2195-2135 Ma) of Ghana. At the most recent stage of this event, which occurred at 2072 Ma, Ghana's...

The Pampa Paciencia Vein system (PPVS) comprises the central zone of the Pampa Paciencia deposit (56-64Ma), located in the Paleocene mineral belt in northern Chile. In this zone, veins are hosted by the Sierra Gorda intrusive complex (Upper Cretaceous) and smaller Paleocene intrusives. 2 units are identified as the PPVS hosts. The microgranular qua...

The abandoned historic gold mining areas in the Sudetes are prospective for vein-type gold deposits. The applied VLF geophysical survey showed a number of linear anomalies indicating the possibility of occurrence of the new ore veins between the areas of former mining exploitation. In the light of the obtained VLF results as well as previous bulk-r...

Geochemical studies of coal mining projects in Environmental Impact Studies (EIS) are often limited to economic characterization of the mineral resource, resulting in a gap in the understanding and assessment of the potential environmental impact caused by coal exploration. A set of analytical techniques were carried out with the general objective...

The Penjween Ophiolite Complex is part of the Zagros Suture Zone (ZSZ) and is located within the Penjween-Walash Subzone northeast of Iraq. It is an incomplete sequence that consists of two main igneous bodies: the ultramafic body and the gabbroic body. The Penjween layered metagabbros show wide variation in grain size and are composed of saussur...

Understanding the spatiotemporal dynamics of river water chemistry from its source to sinks is critical for constraining the origin, transformation, and “hotspots” of contaminants in a river basin. To provide new spatiotemporal constraints on river chemistry, dissolved trace element concentrations were measured at 17 targeted locations across the R...

We have studied the evolution of mineralizing fluids in the world-class San Rafael Sn-Cu lode district, Peru, by investigating the major and trace element compositions of fluid inclusions and hydrothermal chlorite from four major mineralization stages of the deposit. Hypersaline liquid, vapor, and liquid-vapor fluid inclusion assemblages in quartz,...

The article presents information about the results of studying the material composition, mineralogy and geochemistry of deposits formed in the Upper Cretaceous (K2) Santon strata of the North Konimekh uranium deposit located in the Kyzylkum region. Prospecting, appraisal and exploration at the North Konimekh uranium mine is an urgent problem, as it...

Purpose This work highlights the sedimentary characteristics and the role of submarine sulfur-rich karstic springs in the distribution of benthic foraminifera in the northern part of the Adriatic Sea (Bay of Koper). Little is known about how local conditions such as temperature and sulfur bursts may influence sediment properties, benthic habitat va...

Eclogite bodies exposed across Tibet record a history of subduction-collision events that preceded growth of the Tibetan Plateau. Deciphering the time-space patterns of eclogite generation improves our knowledge of the preconditions for Cenozoic orogeny in Tibet and broader eclogite formation and/or exhumation processes. Here we report the discover...

The Daliangzi deposit is the second largest Mississippi Valley-type (MVT) Zn-Pb deposit in the Sichuan-YunnanGuizhou metallogenic province (SYG), SW China. However, detailed mineralization processes that occurred at different ore-forming stages and spatial locations are poorly understood. In this contribution, we report LA-ICPMS trace element spot...

The Proterozoic metasedimentary rocks of the Yaounde Group on the northern edge of the Congo Shield in Central Africa were investigated to understand their provenance and depositional environment. Petrography, geochemistry, and field evidence helped to subdivide the metasediments into paragneiss, mica schist, chlorite schist, and quartzite which we...

The Pusangguo deposit (1.42 Mt @ 1.42% Cu, 0.14 Mt @ 1.82% Zn, 0.08 Mt @ 1.01% Pb, and 285.8 t Co @ 140 g/t Co) is the first Co-rich Cu-Zn-Pb skarn deposit discovered in the Gangdese metallogenic belt. However, the trace and minor element geochemistry of the sulfides in this deposit has not been studied, limiting further understanding of elements’...

Remote sensing geochemistry is a simple, fast and economical advanced prospecting method, which carries out inversion and prediction of surface element content using the empirical model by regression or machine learning. The key problem faced by quantitative remote sensing is the low inversion accuracy of the model due to the mismatch of “point sur...

The Prokletije Mountains/Albanian Alps are the highest part of the Dinaric Mountains. Paradoxically, these mountains and their cave areas remain among the most enigmatic in Europe, having only recently become subjects of scientific research and cave exploration. This paper focuses on the Kolata and Greben massifs, where the highest, and thus the ol...

The aim of this research is to demonstrate the usefulness of chemical and microbiological indicators for analyzing the impact of agricultural activities on groundwater in different hydrogeological and land-use situations. The study area is a typical agro-ecosystem of the fluvio-aeolian plain of Córdoba (Argentina). The main chemical constituents an...

Mineral hydration is an important geological process that influences the rheology and geochemistry of rocks and the fluid budget of the Earth's crust and mantle. Constant-stress differential compaction (CSDC) tests, dry and “wet” tests under confining pressure, and axial-stress tests were conducted for the first time to investigate the influence of...

Gallium (Ga) and aluminum (Al) belong to group IIIA elements in the periodic table. They show a coupled geochemical behavior in most natural systems and are considered as “geochemical partners.” However, compared with the principal oxyhydroxides of Al in nature, gibbsite [Al(OH)3], boehmite (γ-AlOOH), and diaspore (α-AlOOH), only the analogs söhnge...

Concrete cracks have an adverse effect on the strength properties and durability of concrete structures. Therefore, repairing concrete cracks to recover the concrete’s strength parameters is an important task in the civil engineering field. For repairing concrete cracks, the MICP technique has been widely analyzed in recent times; however, no resea...

The underground storage of CO2 (carbon dioxide) in basalt presents an exceptionally promising solution for the effective and permanent sequestration of CO2. This is primarily attributed to its geochemistry and the remarkable presence of reactive basaltic minerals, which play a pivotal role in facilitating the process. However, a significant knowled...

This study examines the occurrence of glendonite along coastlines since 1825, which have been previously referred to under different names such as Pseudogaylussite, Fundylite, and Kool Hoot across eleven sites. By utilising element ratios and 14C radiometric dating techniques, we establish a more accurate chronology for these varied sites ranging f...

During the last forty years, the use of strontium isotopes in archaeology and biogeochemical research has spread widely. These isotopes, alone or in combination with others, can contribute to trace past and present environmental conditions. However, the interpretation of the isotopic values of strontium is not always simple and requires good knowle...

Isoscapes are one of the latest developments for the spatial analysis of geochemical and environmental variability in past mobility scenarios. They have become powerful tools for analysing the interaction between human groups, animals and their surrounding landscapes. The combination of Geographic Information Systems, Geochemistry, Archaeometry and...

The ERASMUS+ ARTeMIS (Action for Research and Teaching Mineral exploration Inclusive School) program is a training-through-research project for mineral exploration that brings together Master students from four partner universities (Univ. Lorraine, FAU Erlangen-Nürnberg, Aristotle University of Thessaloniki and NKUA Athens) and the mining company H...