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An indication of high‐sulfidation epithermal–porphyry transition was observed in the Kumbokarno prospect, East Java, Indonesia. The prospect is composed of two Middle Miocene intrusions with tonalitic and dioritic compositions. Tonalite, the main host‐rock was subjected to argillic, advanced argillic, and vuggy quartz alteration, whereas the juxtap...
Article
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The Hermyingyi quartz vein–type W–Sn deposit is one of the major tungsten and tin producers in Myanmar. It comprises a series of north-trending wolframite-cassiterite-bearing quartz veins mainly hosted in the Late Cretaceous monzogranite which intruded into Paleozoic metasedimentary rocks. Conventional fluid inclusion and infrared microthermometric...
Article
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The Janja Cu-Mo porphyry deposit is located at 70 km south of the Nehbandan, Sistan suture zone, Eastern Iran. The porphyry mineralization in the Janja deposit is temporally and spatially associated with the diorite to quartz diorite and granodiorite granular to porphyry stocks that intruded in the Cretaceous flysch units. The Janja intrusions are...
Article
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There are a large number of natural gas shows in the Upper Paleozoic of the central Hunan Basin. However, the hydrocarbon accumulation process was complicated due to the strong tectonic reformation in this area. A study of the natural gas accumulation period is of significance for determining gas accumulation models. In this research, the fluid inc...
Article
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Recent fluid inclusion analysis indicates that uranium‐bearing brines were present in both the sandstone and the basement at the time of ore genesis in the Athabasca Basin, Canada. However, the question of how the location of uranium‐rich brines controls the formation of unconformity‐related uranium deposits remains unresolved. In this study, four...
Article
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The central part of the Sichuan Basin shows an excellent exploration potential in the dolomitized microbial reservoirs of the Dengying Formation. However, the influence of diagenesis on the formation of high-quality reservoirs is unclear. This study aims to establish the parasequence of the diagenesis in microbial reservoirs and decipher its contro...
Conference Paper
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The units belonging to the Southeast Anatolian Autochthon crop out in the south of Kahramanmaraş district. Seydişehir formation is observed in the basement of the Dadağlı region, and Mesozoic aged carbonates overlie this unit with angular unconformity. This succession is cut by Yavuzeli basalt finally. Vein-type barite-bearing lead mineralization i...
Thesis
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研究区位于泛非造山带的喀麦隆东成矿省的 Lom Belt 地区,该区以复杂 的变质、变形、广泛发育的地壳同熔和岩浆作用和金成矿为特征。对于 Lom Belt 地区的变形、变质和岩浆事件的时代及原生金矿化的成因目前仍存在较 大争议。本文选择 Lom Belt 地区产于变质岩和岩浆岩地区的典型金矿床 Bé taré-Oya 和 Woumbou-Colomine-Kette 为重点研究对象,通过全岩地球化学、 Lu-Hf 同位素地球化学和锆石 U-Pb 年代学对喀麦隆东部的构造演化进行了约 束。另外,通过主要金矿石和蚀变围岩的矿物学、流体包裹体和 O-H-C-S 同 位素研究,查明了与金成矿有关的矿物组成、成矿流体性质及流体来源、成 矿金属来源等。 锆石 U-Pb 和 Lu-Hf 同位素及全岩地...
Conference Paper
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The Brazilian Pre-Salt encompasses a large petroliferous province that covers sections of three Cretaceous sedimentary basins: Santos, Campos, and Espírito Santo. Recent studies have unveiled a complex geological history of the Aptian Pre-Salt rocks. It includes: (i) uncommon continental carbonates of debated origin (cf. Wright, 2020); (ii) increas...
Conference Paper
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Fluid inclusions have long been a recurring tool in the petroleum industry, providing relevant information on the timing, temperature, pressure, and compositional constrains of petroleum systems (see Volk and George, 2019 and references therein). Its application serves both green fields and mature proliferous provinces alike, such as the case of th...
Presentation
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It focuses mainly on temporal fluid evolution by investigating vein minerals, fluid inclusions and ore mineralogy. Microscopic investigations for producing robust mineral paragenesis sequence and fluid inclusion petrography, Raman to identify sulfate minerals, and SEM-EDS employed to comprehend ore mineralogy were the key concerns of the study at t...
Article
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Fluid exsolution in magmas is a process that, in many silicic upper crustal reservoirs, starts at relatively low crystallinities (near liquidus), and precedes the precipitation of many ore bodies, including pegmatites. As any magmatic system approaches its solidus, the amount of the exsolved fluid phase increases and becomes progressively dominant...
Article
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Fluid inclusions represent the direct evidence of paleofluids and can provide valuable information on the evolution of sedimentary basins and oil-bearing strata. Hydrocarbon fluid inclusion(s) (HCFIs) are the vestiges of oil from the geological formations. The paper delineates the paleotemperature (Th)/ oil window, the oil quality of HCFIs and Rama...
Conference Paper
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The Temperature of homogenization (T h) data of fluid inclusions obtained from microthermometric study are widely used for the thermal history modeling using software like PetroMod. Bottom Hole Temperatures (BHT) are widely used in oil industry for thermal calibration purposes. Compared to commonly used thermal calibration parameters such as Vitrin...
Article
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Zircon is a principal source of zirconium and hafnium, as well as a key mineral both for petrogenetic modeling and age dating. Although zircon occurrences have been reported from hydrothermal mineral systems, detailed studies on zircon that crystallized entirely from saturated hydrothermal fluid are rare. Here we report on hydrothermal zircon cryst...
Article
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Tin and (Ag)–Pb–Zn mineralisation generally co-exist in SEDEX, porphyry, skarn, greisen, as well as magmatic-hydrothermal Sn and/or Pb–Zn polymetallic deposits. The genetic relationship between these two styles of mineralization, however, is not well defined. More than 20 skarn and hydrothermal-vein-type Ag–Pb–Zn–Sn deposits can be found in the cen...
Article
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Nanoencapsulation/nanocarrier systems like nanoemulsions, nanoliposomes, solid lipid nanoparticles, biopolymeric nanocarriers, nature-inspired nanocapsules, have been shown with the capacity to encapsulate food constituents. To understand the current status of nanoencapsulation of food, the authors examined recently published reviews and deemed fur...
Article
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With the Upper Cambrian Xixiangchi Formation in the eastern Sichuan Basin as the target, this study investigates various diagenetic events during different diagenetic stages in deep dolomite reservoirs, accompanied by evaluations of their effects on the formation and evolution of the reservoir rock. A series of experiments are implemented on core a...
Article
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Serpentinization produces H2 and synthesizes CH4 that can support non-photosynthetic habitability on Earth and possibly beyond. Although fluids on Earth and beyond that may participate in serpentinization are extensively saline with elevated levels of chlorine, chloride minerals are generally not considered to be a crucial component of serpentiniza...
Article
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The Huoluotai Cu (Mo) deposit is a recently discovered porphyry Cu deposit in the northern Great Xing’an Range, NE China. Fluid inclusion (FI) micro-thermometry results and the C–H–O–S–Pb isotope compositions of the Huoluotai Cu (Mo) deposit are presented in this study. The ore-forming process consists of the sulfide-barren quartz stage (I), the qu...
Article
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The Qiangtang Mesozoic sedimentary basin is a new field of hydrocarbon exploration, in which the Buqu Formation dolostone reservoirs have attracted increasing attention in recent years. To determine the origin of these reservoirs, petrographic study, fluid inclusion thermometry dating, and C-O and Sr isotopic dating were performed. The results reve...
Poster
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Dolomitic rock (dolostone) is a major topic in carbonate research and a complex archive of its palaeoenvironment and diagenetic pathways. Combining field and laboratory techniques (transmitted light- and cathodoluminescence microscopy, U-Pb dating, MicroXRF mapping, fluid inclusion analyses and clumped isotope thermometry, 87Sr/86Sr, δ13C, δ18O), w...
Conference Paper
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Smackover dolostone reservoirs have been the subject of considerable study in past decades because of their importance to the oil and gas industry along the Gulf Coast. This legacy work produced an extensive database of petrographic observations and 2605 geochemical measurements covering an area from eastern Mississippi to the panhandle of Florida....
Article
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The Dongpuzi deposit is an epithermal gold deposit located in the southern margin of the Shaozihe volcanic fault basin in the Liaodong Peninsula. On the basis of fluid inclusion and C–H–O–S–Pb isotope data, a metallogenic model is established for the Dongpuzi deposit. The mineralization at the Dongpuzi deposit has experienced quartz–pyrite (I), qua...
Article
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Stratabound Cu–(Ag) deposits in the Coastal Cordillera of northern Chile were emplaced under an extensional setting during the Late Jurassic and Early Cretaceous. Las Luces and Altamira are two stratabound Cu–(Ag) deposits located approximately at the same latitude (~ 25°45′S), but the former is hosted by Jurassic volcanic and volcaniclastic rocks,...
Article
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Timing of the major Baiyun gold deposit (~ 70 t Au) in the northeastern North China Craton is controversial. A textural and geochronological study of high-grade gold ores identifies three generations of xenotime (Xtm-1, Xtm-2 and Xtm-3), even in single grains. The oldest Xtm-1, in grain cores, is of metamorphic origin, with very high U and U/Th rat...
Article
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Mafic pegmatites have been reported from various geological environments, including ophiolites, layered magmatic intrusions, and volcanic arcs, but their petrogenesis stayed poorly constrained. This study brings new mineralogical and geochemical data obtained from unzoned and zoned gabbroic pegmatites hosted by the 1.8 Ga mafic-ultramafic Hamn intr...
Article
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We propose a novel method to reconstruct the six parameters of the paleostress tensor. The method involves three major steps: (1) measurement and inversion of vein attitudes to determine the reduced paleostress tensor, (2) determination of pore pressures using fluid inclusion (FI) isochores and mineral geothermometry, (3) final adjustment of the Mo...
Article
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The Dongpu depression, like other depressions in the Bohai Bay Basin, is characterized by overpressure, however, the published studies have not clearly given the overpressure formation mechanism and paleo-pressure evolution history in the Dongpu depression. In addition, the current researches are mainly focused on the northern Dongpu depression, wh...
Article
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The Toudaochuan gold deposit is a recently discovered lode gold deposit in Central Jilin Province. Gold ore bodies are dominantly controlled by NE-trending fault. The major hydrothermal period can be further divided into the quartz–pyrite stage (stage I), quartz–gold–polymetallic sulfides stage (stage II, major gold mineralization stage), and quart...
Article
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In the Kenticha area, a series of barren to rare metal-bearing pegmatites intruded into the Neoproterozoic Adola Belt. The pegmatites host world-class Nb and Ta deposits and significant Li and Be reserves. In this contribution , fluid inclusion data and feldspar geothermometry have been combined to define the crystallization condition of the Kentic...
Article
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Carlin-type gold deposits are among the largest hydrothermal gold deposits in the world. However, direct dating the metallogenic age of these deposits is difficult, because not all deposits provide material suitable for conventional radiometric methods. Syn-mineralization stage quartz veins from these deposits usually contain abundant fluid inclusi...
Chapter
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The Azerou massif (Atlas Tellien, Algeria) contains caves with a very special morphology (3-dimensional networks, spherical domes, weathered walls...). All these elements suggest a hydrothermal origin. The walls of some caves are covered by large calcite monocrystals (Rhar Sidi Bakou, Rhar Amalou...). Small bipyramidal quartz crystals are sometimes...
Article
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High-temperature and high-pressure (HTHP) fluids are one of the most extensive participants in geological events. The representative in situ sampling of the HTHP fluids, which is an essential prerequisite for precisely characterizing the HTHP fluids (including compositional and volumetric properties), has been a vital challenge. The technique of fl...
Conference Paper
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Hypogene caves are the product of rock dissolution by reactive fluids whose origin is not linked to surface processes or meteoric water circulation. In contrast to "classic" epigene speleogenesis, the migration path of the fluids generally occurs upwards, and the reactivity of the upwelling solutions stems from deep-seated geological processes (e.g...
Article
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The Xiawolong gold deposit, located in the Muping–Rushan gold metallogenic belt (eastern Jiaodong Peninsula), is a newly discovered deposit that developed in the late Early Cretaceous as fine-grained granite. Gold mineralization, which mainly occurs in the middle of fresh fine-grained granite dikes, consists of stockwork-style and disseminated ores...
Article
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Twelve shale fracture veins and forty-nine fluid inclusion assemblages within the veins of 3800−4200 m in three wells located in different tectonic zones in the Yuxi Region, southern Sichuan Basin were selected in this study. The burial and thermal histories of single wells were reconstructed, and time− temperature−pressure of oil and gas filling w...
Article
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Fluid and solid inclusions in magmatic garnet from Permian pegmatites of the Koralpe Mountains were investigated. On the basis of MnO/(MnO + FeO) ratios, different degrees of melt fractionation during garnet growth were linked with fluid inclusion densities and chemistries. It is shown that garnet indicating low-melt fractionation trends contained...
Article
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The Chaxi gold deposit is located in the southwestern Hunan Province (South China). Extremely high-grade (up to 3 × 105 g/t, avg. 5.3 g/t) Au mineralization is developed in quartz-sulfide veins controlled by WNW- and NNE-trending faults. The sulfide/sulfosalt assemblage is dominated by pyrite, chalcopyrite, and galena, with minor tetrahedrite and c...
Conference Paper
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The Poshteh barite-base metals Kuroko-type volcanogenic massive sulfide(VMS) deposit is located in 18 kilometers east of Semnan in the Alborz magmatic arc within Eocene volcano-sedimentary sequence consisting of dominantly andesitic and dacitic tuff and lava. Generally, four ore horizons were distinguished in the deposit: ore horizon 1, consists of...
Article
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The Hunjiang basin in the northeastern North China block is host to a wide range of ore deposit types that are currently exploited by more than 100 past and producing mines. Extensive field and laboratory investigations were conducted to summarize the regional metallogeny, classify the different deposit types, and to place the deposits within a reg...
Article
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Rashtabad, Aqkand and Jalilabad are neighbouring epithermal base-metal deposits in the Armaqan Khaneh mining district of the Tarom-Hashtjin metallogenic belt, northwestern Iran. Mineralised veins in these deposits consist of pyrite, chalcopyrite, galena, sphalerite with lesser bornite and minor amounts of specular hematite. The gangue mineralogy in...
Article
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The nature of the dolomitization fluids and the diagenetic alterations on carbonate Mg/Ca ratios in Cambrian series-2 to Miaolingian strata in Central Uplift Belt, Tarim Basin are interpreted on the basis of petrography, geochemistry (trace elements, halogens, REEs, O–C–Sr isotopes) and fluid inclusion microthermometry. Based on petrographic examin...
Article
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Expressive granitic magmatism and a complex system of fault and shear zones are the main features associated with the crustal evolution and metallogeny in the Western Bastar Craton (WBC), Central India. The barite mineralization in WBC, Central India, occurs as veins and fracture fillings along faults are activated or reactivated as a consequence o...
Article
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Knowledge of the carbon and oxygen isotope composition of CO2-rich inclusions in crust- or mantle-derived minerals is crucial for a more quantitative understanding of cycling of volatiles between Earth's deep and surficial reservoirs. In this study, we present a crushing method for analysis of combined carbon and oxygen stable isotope compositions...
Article
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A thorough investigation of the characteristics and formation mechanism of dolomite is greatly significant in assessing the validity of dolomitization theory and dolomite reservoirs. Extensive development of dolomites has been found in the organic bank of the Middle Permian Qixia Formation in the northwest of the Sichuan Basin. For that reason, fie...
Article
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The Bundelkhand “giant quartz reef” (BGQR) system comprises 20 major quartz reefs which run for tens of km in strike length of average width of 40 m and occurs in spatial intervals of 12–19 km in the Bundelkhand craton, North Central India. The BGQR system is distinct from quartz vein systems originating from crustal scale shearing observed in anci...
Article
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Hydrothermal quartz samples collected from the Fujiashan and Yipanqiu quartz deposits in southeastern Hubei Province, China have been investigated by analytical combination of optical microscopy, scanning electron microscopy, and inductively coupled plasma optical emission spectroscopy, in conjunction with conventional beneficiation processing to e...
Article
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The Changkeng–Fuwan Au-Ag deposit is representative in South China, which is located in the southwest of the Qin–Hang metallogenic belt (QHMB). The Au and Ag orebodies are located in the same altered fracture zone, forming independent gold and silver orebodies respectively, with the characteristics of “upper gold and lower silver” in space. Three m...
Article
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The Lapeh-Zanak copper deposit is located about 15 km east of Tehran, in the southern part of the Central Alborz Zone. The rock units exposed in this area include a sequence of volcanic and pyroclastic rocks (basalt, andesite, trachy-andesite and dacitic and vitric tuff) belonging to the Fajan Formation with the Paleocene-Lower Eocene age, which ar...
Article
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Sulfide and fluoride mineralization in the NNE Achemmach (NNE-A) area is located in the NE of Central Hercynian Morocco. In veins or when disseminated, it is hosted either in Visean sedimentary formations or in the magmatic bodies, described for the first time in this article and corresponding to pillow-lavas, dolerites and olivine-bearing gabbros....
Article
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The NW Anatolia of Turkey (especially the Biga Peninsula) hosts substantial skarn, porphyry Cu-Mo, and epithermal Pb–Zn ± Ag ± Au mineralizations. Of these, ore-forming processes of the Soma (Manisa) region in the southern part of the Biga Peninsula are distinguished. Two subtypes of mineralization zones were identified in the study area. The first...
Article
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The cassiterite–sulfide mineralization occurs within quartz veins and greisenized Precambrian Older Granite around the Gindi Akwati region at the Ropp complex’s western boundary, north-central Nigeria. The intrusion of Jurassic Younger granite porphyry sheared the marginal parts of the Older Granite and the mylonitized zone created pathways for flu...
Article
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Introduction Varmazyar Pb–Zn (Ag) occurrence, 65 km north of Zanjan, is located in the Tarom–Hashtjin metallogenic belt (THMB). The THMB has been recognized as one of the most important epithermal metallogenic belts in Iran (Kouhestani et al., 2018b) that host numerous small- to medium-sized epithermal deposits (i.e., Gulojeh, Aqkand, Aliabad–Khanc...
Article
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Ulug-Sair Au-Bi-Te-Se mineralization is one prospect for native Au in the Western Tuva, and its origin remains debated. Mineralization consists of gold–sulfide–quartz veins in the host sedimentary rocks (conglomerates, siltstones, shales), quartz–tourmaline, and quartz–carbonate–sericite–altered rocks. To determine its origin, we examined the miner...