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Journal of Palaeogeography 2023年第3期12卷 434-447页

作者： Mariusz A.Salamon Madani Benyoucef Karolina Paszcza Faycal Mekki Imad Bouchemla Bartosz J.Plachno University of Silesia in Katowice Faculty of Natural SciencesBedzinska 60PL-41-200 SosnowiecPoland Laboratoire de Géomatique Ecologie et EnvironnementMustapha Stambouli University29000 MascaraAlgeria Jagiellonian University in Krakow Faculty of BiologyInstitute of BotanyGronostajowa Street 9PL-30-387 CracowPoland

The marl and limestone alternations of the lower jurassic Ain Ouarka and Ain Rhezala formations(Pliensbachian-Toarcian)in the western Saharan Atlas,Northwest Algeria,yield a diverse micro-and mac-rofauna,including moderately numerous crinoids,which are represented by remains of isocrinids,i.e.,Bal-anocrinus ticinensis Hess and columnals of the genus *** far,the latter genus has been observed from the Upper jurassic-lower Cretaceous strata of Eurasia,North America,and the African ***,the present find is the oldest record of this crinoid genus,and the second one from the southern Tethyan *** this paper,it is shown that Percevalicrinus,which is traditionally regarded as a representative of the subfamily Balanocrininae,displays several features of the subfamily *** crinoid assemblage and associated facies and invertebrate fauna are typical of a low-energy deep outer shelf/ramp(below the storm wave-base)setting.

关键词： Echinoderms Crinoids Isocrinids Percevalicrinids Percevalicrinus lower jurassic Algeria Maghrebian Tethys

Characteristics and discovery significance of the Upper Triassic–lower jurassic marine shale oil in Qiangtang Basin,China

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Petroleum Exploration and Development 2023年第5期50卷 1105-1119页

作者： SHEN Anjiang FU Xiaodong ZHANG Jianyong WEI Xuebin HU Anping WANG Jian XIONG Shaoyun FU Xiugen XIE Yuan LIU Siqi LI Xi WANG Xin HE Xunyun QIAO Zhanfeng ZHENG Jianfeng DUAN Junmao Key Laboratory of Carbonate Reservoirs CNPCHangzhou 310023China PetroChina Hangzhou Institute of Petroleum Geology Hangzhou 310023China Research Institute of Exploration and Development PetroChina Qinghai Oilfield CompanyDunhuang 736202China Qiangtang Basin Research Institute Southwest Petroleum UniversityChengdu 610500China Civil-military Integration Center of Geological Survey China Geological SurveyChengdu 610036China

Mesozoic marine shale oil was found in the Qiangtang Basin by a large number of hydrocarbon geological surveys and shallow drilling *** on systematic observation and experimental analysis of outcrop and core samples,the deposition and development conditions and characteristics of marine shale are revealed,the geochemical and reservoir characteristics of marine shale are evaluated,and the layers of marine shale oil in the Mesozoic are *** following geological understandings are ***,there are two sets of marine organic-rich shales,the lower jurassic Quse Formation and the Upper Triassic Bagong Formation,in the Qiangtang *** are mainly composed of laminated shale with massive *** laminated organic-rich shale of the Quse Formation is located in the lower part of the stratum,with a thickness of 50–75 m,and mainly distributed in southern Qiangtang Basin and the central-west of northern Qiangtang *** laminated organic-rich shale of the Bagong Formation is located in the middle of the stratum,with a thickness of 250–350 m,and distributed in both northern and southern Qiangtang ***,the two sets of laminated organic-rich shales develop foliation,and various types of micropores and *** average content of brittle minerals is 70%,implying a high *** average porosity is 5.89%,indicating good reservoir physical properties to the level of moderate–good shale oil ***,the organic-rich shale of the Quse Formation contains organic matters of types II1 and II2,with the average TOC of 8.34%,the average content of chloroform bitumen'A'of 0.66%,the average residual hydrocarbon generation potential(S1+S2)of 29.93 mg/g,and the Ro value of 0.9%–1.3%,meeting the standard of high-quality source *** organic-rich shale of the Bagong Formation contains mixed organic matters,with the TOC of 0.65%–3.10%and the Ro value of 1.17%–1.59%,meeting the standard of moderate source ***,four

关键词： marine shale oil Bagong Formation Upper Triassic Quse Formation lower jurassic Biluocuo area Shiyougou area Qiangtang Basin

Sedimentary facies analysis of a high-frequency,small-scale,peritidal carbonate sequence in the lower jurassic of the Tripolis carbonate unit (central western Crete,Greece):Long-lasting emergence and fossil laminar dolocretes horizons

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Journal of Palaeogeography 2016年第3期5卷 241-257页

作者： Fotini A.Pomoni Vassilis Karakitsios Section of Historical Geology and Paleontology Department of Geology and GeoenvironmentNational and Kapodistrian University of Athens

Abstract The study examines a lower jurassic （late Liassic） cyclic lagoonal-peritidal stratigraphic unit outcropping in central western Crete （Tripolis unit）, which corresponds to the eastern （internal） part of the mainland Gavrovo-Tripotis platform, the most significant external platform of the Hetlenides. The studied Tripolis carbonate sequence consists of meter-scale, shallowing-upward successions of restricted inner- carbonate platform facies, including cyclically repeated subtidal, intertidal and supratidal facies, that are separated by erosion surfaces （elementary cycles）. Each cycle starts with relatively open-marine facies, which are overlain by shallower, more restricted facies （tidal fiat progradation）. The lithofacies association includes dotomitic intraclastic-peloidal-bioclastic wackestones-packstones/floatstones and grainstones/rudstones dominated by a restricted shallow-marine fauna （bivalves, gastropods, ostracods and seldom benthic fora- minifers）, representing a shaUow subtidal to intertidal, moderately high-energy environment within an inner- platform setting （peritidal environment to restricted lagoon）. This lithofacies association has been intermit- tently subaeriaUy exposed and has undergone diagenetic processes in an inter- or supratidal environment, exhibiting features of vadose diagenesis and pedogenesis due to long-lasting exposure along certain horizons. The peritidat facies are capped by dolocretes controlled by root-activities （laminar dolocretes, petoi- dat-pisoid dolocretes and massive dotocretes）, marking the end of each depositional cycle, and, thus, dis- tinguishing the successive episodes of a prolonged subaerial exposure period and birth of pateosol horizons. Dotocretes consist a diagenetic facies, characterized by several vadose and pedogenic fabrics, including fenestral cavities with geopetal structures, ＂flower spar＂ to blocky sparry cement in primary pores, micritic coatings, crudely pelleted watts, atveotar-septat texture, in

关键词： External Heltenides lower jurassic Tripotis carbonate unit Peritidat environment Cyclo-thems Penesaline dolomites Dotocrete horizons "flower spar" dolomite cement

A New Species of Megarhyphus,an Interesting Discovery from the lower jurassic of England(Diptera,Anisopodidae)

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Acta Geologica Sinica(English Edition) 2010年第4期84卷 693-695页

作者： Krzeminska EWA Coram A.ROBERT Krzeminski WIESLAW Institute of Systematics and Evolution of Animals Polish Academy of SciencesKrakowPoland School of Human and Environmental Sciences the UniversityReading RG6 2ABUK

The oldest representative of the genus Megarhyphus Kovalev （Diptera： Anisopodidae） is described from the lower jurassic （Sinemurian） of England. A summary of our knowledge of jurassic Anisopodidae is given.

关键词： new species Megarhyphus Anisopodidae Olbiogastrinae Diptera lower jurassic alula

lower jurassic Sequence Stratigraphy and Sedimentary Facies on the North Slope of Mount Qomolangma

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Acta Geologica Sinica(English Edition) 1996年第3期70卷 303-316,331页

作者： Shi Xiaoying, Lei Zhenyu and Yin Jiarun China University of Geosciences, Beijing

The lower jurassic is subdivided in ascending order into the Wulong, Kangdui and Yongjia Formations on the north slope of Mount Qomolangma, with a total thickness of 1362 m. They are thought to have been deposited respectively in the environments of the carbonate ramp fault-bounded basins and carbonate platform, with six sedimentary facies and six sub-facies. During the Early jurassic, the Qomolangma area experienced strong faulting and subsidence, and was of a matured rift basin. The lower jurassic consists of eleven 3rd-order sequences, which can be grouped into three 2nd-order sequences and form a large transgressive-regressive cycle. The 3rd-order sequences and the corresponding sea-level changes recognized in the area can be correlated quite well with those set up in the western Tethys, and may have been caused by the eustatic fluctuations, while the 2nd-order sequences seem to be more closely related to the basement subsidence and the variation in sedimentary influx, indicating the evolution of the eastern Neotethys and the movement of the plates on its two sides.

关键词： lower jurassic sedimentary facies sequence stratigraphy sea-level changes southern Tibet

Facies Associations and Sequence Stratigraphy of the Toarcian Marrat Formation(Saudi Arabia) and Their Equivalents in Some Gondwanaland Regions

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Journal of Earth Science 2023年第1期34卷 242-259页

作者： Mohamed Tawfik Abelbaset S.El-Sorogy Khaled Al-Kahtany Geology Department Faculty of ScienceZagazig UniversityZagazig44519Egypt Geology and Geophysics Department College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

The Toarcian Marrat Formation is exposed in outcrops in central Saudi Arabia and displays a variety of clastic and carbonate facies associated with well-preserved depositional geometries. It is unconformably overlies the Triassic Minjur Formation and it in turn is overlaid by the Middle jurassic Dhruma Formation. Thirteen lithofacies types can be identified that permit the recognition of five lithofacies associations in a mixed clastic/carbonate platform. These lithofacies range from low-energy peritidal, intertidal, and back-shoal to moderate-and high-energy shoal and foreshoal lithofacies associations. The Marrat Formation exhibits three depositional sequences, each sequence is grouped into a transgressive systems tract(TST) and a highstand systems tract(HST) and then bounded by sequence boundary surfaces(SBSs). The TSTs are generally identified in clastic tidal-flat beds and back-shoal wackestones, while the HST is generally recorded in the carbonate tidal-flat and shoal. The vertical succession of facies associations from peritidal to foreshoal depositional environments is indicative of a deepening upward and retrogradational systems tract, from lower to Upper Toarcian. The correlation between the studied sections reveals a general shallowing towards the south and the similarities between the studied sequences and others in the Arabian Gulf, the northern Neo-Tethys Plate, and Gondwanaland countries.

关键词： stratigraphy sequence stratigraphy lower jurassic Marrat Formation Saudi Arabia Neo-Tethys Arabian Gulf Gondwanaland

An Extraordinary Early jurassic Planthopper from Hunan (China) Representing a New Family Qiyangiricaniidae ***. (Hemiptera:Fulgoromorpha:Fulgoroidea)

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Acta Geologica Sinica(English Edition) 2011年第4期85卷 739-748页

作者： Jacek SZWEDO WANG Bo ZHANG Haichun Muséum and Institute of Zoology Polish Academy of Sciences64Wilcza StreetPL00-679 WarsawPoland State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of SciencesNo.39East Beijing RoadNanjing 210008China

A new family of planthoppers Fulgoromorpha from the lower jurassic of southern China is described to comprise Qiyangiricania cesta Lin,*** new family differs in venation pattern from the other jurassic representatives of Fulgoroidea,presenting particular model of tegmen venation,not found among extinct and recent *** Mesozoic stage of Fulgoroidea evolution is *** extinct taxon Ricaniites fulgens（Brodie,1845）from the Purbeck of United Kingdom is excluded from the Hemiptera.

关键词： new family Hemiptera lower jurassic taxonomy evolution

Evolution of hydrocarbon generation of jurassic source rock of the Lenke-1 well in Lenghu tectonic belt of Qaidam basin,China

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Mining Science and Technology 2009年第2期19卷 235-240页

作者： ZHU Yan-ming ZHANG Ming JIANG Bo PEN De-hua YI Cheng-min ZENG Chun-lin WU Ying School of Resource and Geoscience China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Qinghai Oilfield Company PetroChina Dunhuang Gansu 736202 China

The Lenghu tectonic belt is located at or near the northern margin in the Qaidam Basin,which is an intracontinental composite basin evolved during the Mesozoic and Cenozoic *** lower jurassic is considered a good source rock with a wide *** the deposit of the lower jurassic hydrocarbon source rock,the basin has undergone many tectonic events of subsidence and *** source rocks in the Lengke-1 well,have experienced a complicated tectonic-burial history during which different hydrocarbon generation(HG) evolutions have taken *** have investigated the history of burying,heating and hydrocarbon generation of the lower jurassic source rocks,not just on the basis of tectonic disturbance and deep burial,but also from new studies in fluid inclusion measurements and the application of numerical simulation with EASY%*** study reveals the evolution process,tectonic episodes and the strength of the HG of the jurassic source *** conclude that twice HG processes have taken place since the lower jurassic formation and infer from that the important conclusion that more HG of the lower jurassic source rock took place during the Eocene-Miocene ***,we discuss the oil and gas tarp formation and destruction in the Lenghu tectonic belt and point out that more attention should be paid to the thrust faults,which formed during the late Himalayan epoch.

关键词： lower jurassic source rocks hydrocarbon generation EASY%Ro numerical simulation Lenghu tectonic belt

华南早侏罗世本内苏铁植物威廉姆逊属(Williamsonia)的新记录（英文）

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华南早侏罗世本内苏铁植物威廉姆逊属(Williamsonia)的新记录（英...