Carbonates and Evaporites最新文献_第9页

Origin mechanism of overpressure in saline lacustrine formation of the Paleogene and Neogene in the Western Qaidam Basin, NW China 中国西北西柴达木盆地古近纪和新近纪盐湖地层超压成因机制

IF 1.4 4区地球科学

Carbonates and Evaporites Pub Date : 2024-01-16 DOI: 10.1007/s13146-023-00912-7

Chenglin Liu, Taozheng Yang, Pei Li, Dehao Feng, Hongliang Huo

{"title":"Origin mechanism of overpressure in saline lacustrine formation of the Paleogene and Neogene in the Western Qaidam Basin, NW China","authors":"Chenglin Liu, Taozheng Yang, Pei Li, Dehao Feng, Hongliang Huo","doi":"10.1007/s13146-023-00912-7","DOIUrl":"https://doi.org/10.1007/s13146-023-00912-7","url":null,"abstract":"Previous research shows that the origin and distribution of formation overpressure are governed by several dominant factors including disequilibrium compaction, hydrocarbon generation, tectonic compression and diagenesis, influenced by salt components and their concentration, but it is unclear how salts affect formation overpressure in saline lacustrine basins. This paper investigated the effect of salts on formation overpressure based on organic geochemistry, rock mineralogy, logging curve comparison and wave velocity-density cross-plot by combining the sedimentary and structural background. In the Western Qaidam Basin, the proportion of abnormally high pressures rises from the Neogene to the Paleogene. The top surface of the overpressure is between 2300 and 2500 m deep. As the subsidence and sedimentary centers of the basin moved eastward, the centers of the overpressure migrated from west to east. In the Upper Oligocene, the overpressure is developed in the deep and semi-deep lacustrine facies, and the pressure coefficient is 1.8–2.0. Disequilibrium compaction is the primary control factor with a contribution rate of more than 60% in the intersalt and subsalt strata, followed by tectonic compression with a contribution rate of 20–30%. Fracture reducing by salt filling and fluid volume expanding by gypsum dehydration increase the fluid volume in the formation, which promotes formation overpressure. The gypsum salt rocks also have strong plasticity and sealing effect, thus providing a closed environment for the formation overpressure. Through providing the primary migration driven force and sealing conditions for oil and gas, the overpressure is meaningful to petroleum accumulation and preservation in saline lacustrine formation of the Paleogene and Neogene in the Western Qaidam Basin, NW China.","PeriodicalId":9612,"journal":{"name":"Carbonates and Evaporites","volume":"80 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139475068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluid inclusion and stable isotope (O and S) constraints on the genesis of the Guydash iron skarn deposit, East Azarbaijan province, Iran 伊朗东阿扎尔拜詹省吉达什铁矽卡岩矿床成因的流体包裹体和稳定同位素（O 和 S）制约因素

IF 1.4 4区地球科学

Carbonates and Evaporites Pub Date : 2023-12-18 DOI: 10.1007/s13146-023-00910-9

Mohammad Saleh Abyarifard, Mohammad Lotfi, Mehraj Aghazadeh, Nima Nezafati

{"title":"Fluid inclusion and stable isotope (O and S) constraints on the genesis of the Guydash iron skarn deposit, East Azarbaijan province, Iran","authors":"Mohammad Saleh Abyarifard, Mohammad Lotfi, Mehraj Aghazadeh, Nima Nezafati","doi":"10.1007/s13146-023-00910-9","DOIUrl":"https://doi.org/10.1007/s13146-023-00910-9","url":null,"abstract":"Magnetite mineralization accompanied by minor hematite, pyrite, chalcopyrite, tetrahedrite, tennantite, and goethite, occurs in the Guydash iron skarn deposit in East Azarbaijan province, Iran. Geologically, it is located in the northwestern part of the Sanandaj–Sirjan zone. The skarn was formed by the intrusion of igneous bodies, especially porphyritic diorites, in contact with Middle-Upper Jurassic limestones and lesser Eocene pyroclastics. During skarn formation, four paragenetic stages of mineralization are distinguished: the prograde, retrograde, sulfidic and supergene stages, with magnetite deposited in the retrograde stage. Microthermometric data from fluid inclusions in calcite and quartz showed that the retrograde mineralization stage occurred at low to moderate temperatures (159.7–299.5 °C), a maximum pressure of 95 bar, and a maximum depth of 1 km. The fluids responsible for mineralization in this stage were aqueous and had low to high salinity (2–34 wt% NaCl equivalent). Fluid inclusion data indicate that the mineralizing fluid in the Guydash deposit was derived from a mixture of magmatic, meteoric, basinal, and metamorphic waters. The δ18O values in magnetite range from + 5.8 to + 10.2‰. The δ18O values of water in equilibrium with magnetite at an average homogenization temperature of 230 °C were calculated to range from -2.43‰ to 1.97‰. The O isotope values in magnetite revealed that the mineralizing fluids were mainly from magmatic waters. The δ34S values in pyrite from sulfidic stage range from + 10.2 to + 12.6‰, indicating that the sulfur was supplied from seawater sulfate source. Geological, mineralogical, fluid inclusion and isotopic data suggest that the Guydash deposit is a typical calcic-type Fe skarn deposit related to the intrusion of dioritic rocks into the Jurassic limestones.","PeriodicalId":9612,"journal":{"name":"Carbonates and Evaporites","volume":"10 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138743623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fracture modeling of carbonate rocks via radial basis interpolation and discrete fracture network 基于径向基插值和离散裂缝网络的碳酸盐岩裂缝建模

IF 1.4 4区地球科学

Carbonates and Evaporites Pub Date : 2023-11-21 DOI: 10.1007/s13146-023-00904-7

Yuhan Li, Jinkai Wang, Chun Li, Jun Xie, Rui Wu

{"title":"Fracture modeling of carbonate rocks via radial basis interpolation and discrete fracture network","authors":"Yuhan Li, Jinkai Wang, Chun Li, Jun Xie, Rui Wu","doi":"10.1007/s13146-023-00904-7","DOIUrl":"https://doi.org/10.1007/s13146-023-00904-7","url":null,"abstract":"For carbonate reservoirs primarily composed of micrite particles, fractures serve as the main channel for fluid flow, determining the storage capacity and development efficiency of oil and gas. However, controlled by various formation factors, these fractures are typically of a small scale and have an irregular distribution, making them difficult to be accurately characterized and predicted by conventional methods. Therefore, this study proposed a discrete fracture network (DFN) modeling method based on radial basis interpolation, which enhanced the comprehensiveness of modeling restraint condition and significantly improved the accuracy of fracture distribution prediction. First, a model of the primary spatial distribution of fractures was derived from the difference calculation of statistical parameters of fractures based on radial basis function (RBF) interpolation. Next, an RBF-driven interpolation was programmed as an auxiliary tool for the DFN model by taking into account both stochasticity and uncertainty. The primary and secondary restraint maps used for DFN model were generated under the control of geological parameters and seismic attributes, respectively. Finally, the stochastic DFN model was sequentially modified based on different levels of constraint conditions, and its accuracy was validated using actual data. The results indicate that the DFN model with RBF is more reliable and highly consistent with the actual geological conditions and well production data.","PeriodicalId":9612,"journal":{"name":"Carbonates and Evaporites","volume":"7 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138532733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Late Paleocene–Early Eocene larger foraminifera from the Galala Plateaus, North Eastern Desert, Egypt: biostratigraphic, paleoenvironmental and paleoecological implications 古新世晚期-始新世早期埃及东北部沙漠Galala高原大型有孔虫:生物地层、古环境和古生态意义

IF 1.4 4区地球科学

Carbonates and Evaporites Pub Date : 2023-11-18 DOI: 10.1007/s13146-023-00909-2

Shahin Abd-Elhameed, Abdel Aziz Mahmoud, Yasser Salama

{"title":"Late Paleocene–Early Eocene larger foraminifera from the Galala Plateaus, North Eastern Desert, Egypt: biostratigraphic, paleoenvironmental and paleoecological implications","authors":"Shahin Abd-Elhameed, Abdel Aziz Mahmoud, Yasser Salama","doi":"10.1007/s13146-023-00909-2","DOIUrl":"https://doi.org/10.1007/s13146-023-00909-2","url":null,"abstract":"Two stratigraphic sections are investigated, and a diverse larger benthic foraminiferal assemblage is recorded from the upper Paleocene–lower Eocene Southern Galala Formation at the Galala Plateaus, north Eastern Desert, Egypt. Twenty-eight larger foraminiferal species, belonging to thirteen genera, are identified and their comparative stratigraphic range with the Tethyan zonations of Hottinger (1960) and Serra-Kiel et al. (1998) is documented. Nine shallow benthic zones (SBZ3-6 and SBZ8-12) are designated in the studied interval, involving index zonal markers, e.g., Glomalveolina primaeva (Reichel), G. levis Hottinger, Nummulites atacicus (Leymerie), Alveolina vredenburgi Davies, and A. ellipsoidalis Schwager. Fifty-four thin sections are prepared and analyzed, yielding seven microfacies types in the present study, with larger benthic foraminifera as the dominant biotic components. These microfacies types indicate a deposition in restricted tidal flat inner ramp to open-marine middle ramp environments. The inner ramp environments are dominated by alveolinids, orbitolitids, and in part by miliolids and orthophragminids, reflecting euphotic to mesophotic, meso-oligotrophic, and normal to hyper salinity conditions. The middle ramp environment is characterized by nummulitids, implying meso-oligophotic, oligotrophic, and normal salinity conditions. The studied successions at the Galala Plateaus are devoid of corals in platform stages II and III, similar to the Pyrenean strata from middle latitudes at the northern Tethys, except for small coral patches in both stages in the latter due to the cooler temperature. The Early Eocene (Cuisian) Nummulites accumulations suggest a development on paleohighs in a distal inner ramp environment, and then a transportation by wave and current actions into the surrounding proximal middle ramp environment.","PeriodicalId":9612,"journal":{"name":"Carbonates and Evaporites","volume":"113 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138532765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reservoir rock typing and storage capacity of Mishrif Carbonate Formation in West Qurna/1 Oil Field, Iraq 伊拉克西古尔纳1油田Mishrif碳酸盐岩储层岩石类型及储层容量

4区地球科学

Carbonates and Evaporites Pub Date : 2023-11-13 DOI: 10.1007/s13146-023-00908-3

Ahmed N. Al-Dujaili

引用次数: 0

Controlling factors and reservoir characteristics of Dolostone–evaporite co-occurring systems in the Eastern Sichuan Basin, China 川东地区白云岩-蒸发岩共生体系控制因素及储层特征

4区地球科学

Carbonates and Evaporites Pub Date : 2023-11-09 DOI: 10.1007/s13146-023-00907-4

Jixuan Wang, Zhonggui Hu, Jiuzhen Hu, Shilin Li, Na Zhang, Wenjing Wang, Chenyu Zhang, Tianle Zhang

引用次数: 0

Microfacies and stable isotope analysis of Kuldhar Member Limestone (Callovian–Oxfordian), Jaisalmer Basin, western Rajasthan: implications for depositional environment and diagenetic evolution 拉贾斯坦西部Jaisalmer盆地Kuldhar组灰岩微相及稳定同位素分析:沉积环境和成岩演化意义

4区地球科学

Carbonates and Evaporites Pub Date : 2023-11-06 DOI: 10.1007/s13146-023-00905-6

Shaikh Asjad, K. F. Khan, M. A. Quasim, H. K. Sachan, Aashna Javed

引用次数: 0

Tracing nitrate pollution sources of karst groundwater in water resources using environmental isotopes 利用环境同位素追踪水资源中岩溶地下水硝酸盐污染源

4区地球科学

Carbonates and Evaporites Pub Date : 2023-11-06 DOI: 10.1007/s13146-023-00906-5

Yunfeng Zhang, Dalu Yu, Di Wu, Yuhui Zhao, Zhe Zhang, Bo Li, Baohui Huang, Mingguo Wang, Junru Gao, Yuxiao Kang, Rui Liu

引用次数: 0

Hydrothermal dolomitization in the Devonian Khyber Limestone Peshawar Basin, Pakistan: evidence from outcrop analogue, petrography, and geochemistry 巴基斯坦白沙瓦盆地泥盆系开伯尔灰岩热液白云化:来自露头模拟、岩石学和地球化学的证据

4区地球科学

Carbonates and Evaporites Pub Date : 2023-11-02 DOI: 10.1007/s13146-023-00901-w

Saddam Qaisar, Xiaoyan Zhao, Sulaiman Khan, Imad Ullah Khan, Asif Alam, Jaseem Ul Haq, Shayan Ahmad, Xuecheng Zhao

引用次数: 0

Morphotectonic development of surface karst in Western Taurus (Türkiye) 金牛座西部表层岩溶的形态构造发育

4区地球科学

Carbonates and Evaporites Pub Date : 2023-10-21 DOI: 10.1007/s13146-023-00900-x

Mehmet Furkan Şener, Mesut Şimşek, Mustafa Utlu, Muhammed Zeynel Öztürk, Hasan Sözbilir

引用次数: 0