Stable carbon isotopic composition of light hydrocarbons and n-alkanes of condensates in the Tarim Basin, NW China by Shipeng Huang, Chenchen Fang, Weilong Peng, Qingchun Jiang, Ziqi Feng

“…The carbon isotopic patterns of condensates and oils in the Ordovician strata of Tarim Basin are very similar, indicating they originate from the same type of source rocks. …”
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Landslide hazard probability and risk assessment at the community level: a case of western Hubei, China by S. Fu, L. Chen, T. Woldai, K. Yin, L. Gui, D. Li, J. Du, C. Zhou, Y. Xu, Z. Lian

“…The spatial probability from susceptibility mapping with an accuracy of 84 % indicates that the major controlling factors are Quaternary deposits and weathered eluvium from Ordovician limestones. This study revealed that most building areas in hazard maps are at the foot of major slopes with very high hazard probabilities, and therefore we computed the potential loss of life and property for each slope. …”
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The Lanthanide “Tetrad Effect” as an Exploration Tool for Granite-Related Rare Metal Ore Systems: Examples from the Iberian Variscan Belt by Ivo Martins, António Mateus, Michel Cathelineau, Marie Christine Boiron, Isabel Ribeiro da Costa, Ícaro Dias da Silva, Miguel Gaspar

“…The multi-elemental whole-rock characterization of the main Cambrian–Ordovician and Carboniferous–Permian granite plutons and late aplite–pegmatite dykes exposed across the Segura–Panasqueira Sn-W-Li belt show that the increase in TE_1,3 values co-vary with magmatic differentiation and metal-enrichment, being the Carboniferous–Permian granite rocks the most differentiated, and metal specialized. …”
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Paleovirology: connecting recent and ancient viral evolution by Aiewsakun, P

“…Again, by using the power-law rate-decay model, analyses in this thesis suggest that this major retroviral clade has an ancient Ordovician marine origin, originating together with their jawed vertebrate hosts more than 450 million years ago. …”

Geochronological, Geochemical and Sr-Nd-Pb-Hf Isotopic Constraints on the Petrogenesis of Pyroxene Diorites in the Sanchahe Iron-Gold Deposit, Western Shandong by Ming Ma, Chao Zhang, Yadong Li, Mingbo Gao, Jilei Gao, Siyuan Li, Qiwei Feng, Jian Li, Cui Tao, Yankui Liu

“…The skarn type of iron-gold deposit (without copper) is located in the contact belt between pyroxene diorites and Ordovician limestone xenoliths. The zircon U-Pb age of pyroxene diorites is 138.4 ± 1.2 Ma belonging to the Early Cretaceous. …”
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Characteristics of Lower Paleozoic strike-slip faults and their significance for oil and gas exploration in Xunyi-Yijun area, Ordos Basin by Qichao WANG, Guangxiang LIU, Jiang WU, Xinxin YUE, Ziming SUN, Juntao ZHANG, Xiaopeng GAO, Ling LIU, Kai LU, Zhongpei ZHANG

“…The faults display "compression shear in the northwest, tension shear in the center, and segmental deformation on trunk fractures" on their planes.Moreover, the Lower Paleozoic strike-slip faults experienced two stages of tectonic activities with greater intensity observed from the Late Ordovician to the Silurian, marking the primary period of fault development. …”
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New Detrital Apatite Fission Track Thermochronological Constraints on the Meso-Cenozoic Tectono-Thermal Evolution of the Micangshan-Dabashan Tectonic Belt, Central China by Tao Tian, Tao Tian, Peng Yang, Jianming Yao, Zhonghui Duan, Zhanli Ren, Deliang Fu, Deliang Fu, Fu Yang, Fu Yang

“…The sedimentary cap of Cambriano-Ordovician strata responded positively to this rapid cooling event and entered the PAZ since ca. 63 Ma. …”
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The target selection and quantitative evaluation for deep geothermal resource zoning of typical geothermal fields in central Hebei of North China plain by Hong Xiang, Hong Xiang, Yahui Yao, Yahui Yao, Shaohua Gai, Jian Song, Jian Song, Wei Song, Wei Song, Jiulong Liu, Jiulong Liu, Zhaolong Feng, Zhaolong Feng

“…The evaluation results indicate that the Cambrian-Ordovician reservoir target area is relatively large, and there are many favorable target areas with good reservoir conditions in the Middle-Upper Proterozoic. …”
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Fault characteristics and their control on oil and gas accumulation in the southwestern Ordos Basin by Yongtao Liu, Shuanghe Dai, Yijun Zhou, Fufeng Ding, Mingjie Li, Xingyun Li, Yu Zhao, Binhua Guo, Tong Li, Junan Han

“…These NS-, NW-, and NE-trending fault systems developed in the Meso-Neoproterozoic – Lower Ordovician strata. Of these, the NS-trending fault system mainly consists of consequent and antithetic faults which show clear syndepositional deformation. …”
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3D geological model-based hydraulic fracturing parameters optimization using geology–engineering integration of a shale gas reservoir: A case study by Yuyang Liu, Xinhua Ma, Xiaowei Zhang, Wei Guo, Lixia Kang, Rongze Yu, Yuping Sun

“…With Well Area X of the shale gas reservoir from the Ordovician Wufeng Formation to the Silurian Longmaxi Formation in Luzhou, southern Sichuan, China, as an example. …”
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The Acheulean of the Upper Guadiana River Basin (Central Spain). Morphostratigraphic Context and Chronology by M. Santonja, M. Santonja, A. Pérez-González, J. Baena, J. Panera, J. Panera, E. Méndez-Quintas, E. Méndez-Quintas, D. Uribelarrea, D. Uribelarrea, M. Demuro, L. Arnold, A. Abrunhosa, A. Abrunhosa, S. Rubio-Jara, S. Rubio-Jara, S. Rubio-Jara

“…These fans, mainly composed of Lower and Middle Ordovician quartzite gravel, were eroded in their distal positions by the Bullaque and Becea rivers, forming very low terraces on which large concentrations of Acheulean and Mousterian lithic industry can be found. …”
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Grain Size Distribution of Organic Matter and Pyrite in Alum Shales Characterized by TIMA and Its Paleo-environmental Significance by XIE Xiao-min, LI Li, YUAN Qiu-yun, WU Fen-ting, LIN Jing-wen, DOU Hao-ran

“…BACKGROUND Alum shale (Middle Cambrian to Lower Ordovician) is a set of significant marine source rock in Northern Europe, and the maturity is from immature to over mature. …”
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Hyolitha from the Early Paleozoic glacial erratic boulders (Geschiebe) of Germany and Poland by J. M. Malinky

“…Occurrences in the Geschiebe of <i>Crispatella</i> Malinky, 2002 and <i>Dorsolinevitus</i> Syssoiev, 1958, reinforce the notion of distinct hyolith paleobiogeographic provinces in the Ordovician, with these forms belonging to the Baltic province of Marek (1976). …”
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Unraveling the origins and P-T-t evolution of the allochthonous Sobrado unit (Órdenes Complex, NW Spain) using combined U–Pb titanite, monazite and zircon geochronology and rare-ea... by J. M. Benítez-Pérez, J. M. Benítez-Pérez, P. Castiñeiras, J. Gómez-Barreiro, J. R. Martínez Catalán, A. Kylander-Clark, R. Holdsworth

“…In zircon, cathodoluminescence images and REE analyses allow two aliquots with different origins in the paragneiss to be distinguished. An Early Ordovician age (<span class="inline-formula">∼490</span>&thinsp;Ma) was obtained for metamorphic zircons, although with a large dispersion, related to the evolution of the rock. …”
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Geological characteristics and enrichment laws of normal-pressure shale gas in the basin-margin transition zone of SE Chongqing by Xipeng He, Guisong He, Yuqiao Gao, Peixian Zhang, Shuangfang Lu, Jingya Wan

“…Keywords: SE Sichuan basin, Transition zone at the basin margin, Late ordovician–early silurian, Normal-pressure shale gas, Main factors controlling high yield, Tectonic stress field, Gas accumulation…”
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Pressure evolution of shale gas reservoirs in Wufeng-Longmaxi formations, Lintanchang area, southeast Sichuan Basin and its geological significance by Jianming TANG, Jianhua HE, Limin WEI, Yong LI, Hucheng DENG, Ruixue LI, Shuang ZHAO

“…The Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation in Lintanchang area of the southeastern Sichuan Basin has good exploration and development conditions, and clarifying the paleo-fluid pressure evolution is of great significance for revealing the process of shale gas accumulation and fugitive emission. …”
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Analysis of the Formation Mechanism of Medium and Low-Temperature Geothermal Water in Wuhan Based on Hydrochemical Characteristics by Zhibin Yin, Xuan Li, Changsheng Huang, Wei Chen, Baoquan Hou, Xiaozhe Li, Wenjing Han, Pingping Hou, Jihong Han, Chonghe Ren, Jin Zou, Shan Hua, Liansan Xu, Ziliang Zhao

“…The Silurian is the main water barrier in the region, which separates the upper Triassic and Paleogene as shallow aquifers and the lower Cambrian and Ordovician as deep aquifers. Different strata are connected by a series of fault structures, which constitute Wuhan’s unique groundwater water-bearing system. …”
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Indicative significance of hydrochemical characteristics in geothermal resource investigations in the Enshi Basin by Zewei Li, Fei Yuan, Minglong Li, Jun Zhao, Kai Wan, Guangshun Li

“…Conclusion According to the elevation range of the study area, the geothermal water recharge area is mainly the low and middle mountain area of Cambrian Ordovician carbonate rocks in the western part of the basin.…”
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Constraints on Sandstone-Type Uranium Deposits by the Tectonic Uplift and Denudation Process in the Eastern Junggar Basin, Northwest China: Evidence from Apatite Fission Track and... by Zhangyue Liu, Suping Peng, Mingkuan Qin, Shaohua Huang, Yingying Geng, Zhongbo He

“…The comprehensive evaluation of the clastic sediment composition, stratigraphic distribution of the erosion source area, and thermal history showed that a large amount of exposed Carboniferous–Permian granites in the Qinglidi and Karameri Mountain erosion source areas contributed dominant sediment material and uranium sources for the Triassic and Middle and Lower Jurassic strata in the basin. The Ordovician–Early Devonian granites only provided sediment sources for the Upper Triassic and Lower Jurassic strata in the basin. …”
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Formation mechanisms and resource potential of carbonate geothermal reservoirs in the Beijing-Tianjin-Hebei plain by Xinwei Wang, Tinghao Wang, Nanan Gao, Xiang Mao, Lu Luo, Xingchen Lu, Haiquan Li

“…The results show that two suites of carbonate karst reservoirs, namely the Jxw Formation and the Ordovician strata, have primarily developed in the BTHP, and their formation and evolution can be divided into four stages: the Mesoproterozoic-Early Paleozoic stage with carbonate sedimentation and the development of interlayer karst, the Late Paleozoic stage with the development of direct sedimentary cover, the Mesozoic stage with compressional uplifting and development of buried hill karst, and the Cenozoic stage with regional cover deposition and the modification and finalization of karst geothermal reservoirs. …”
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