Issue 2,2004 Table of Contents

1 LATE CARBONIFEROUS PROFUSULINELLA FAUNA FROM SHANGHANG OF FUJIAN AND ITS STRATIGRAPHIC SIGNIFICANCE

LI Jian Cheng ) , HONG Zu Yin ) , CHEN Guo Qing ) ) Department of Geography , Quanzhou Teachers College , Quanzhou , ) Department of Environment , Resource Engineering , Fuzhou University , Fuzhou ,

2004(2). DOI: 1 CSTR:

[Abstract](214) [HTML](0) [PDF 0.00 Byte](7)

Abstract:
对福建上杭晚石炭世类Profusulinella动物群的系统研究 ,共鉴定类化石 4属 1 7种。根据它们在地层中的分布和垂向变化规律 ,自上而下建立一个带、两个亚带 :Profusulinella带 ,2 ) .Profusulinellawangy櫣ｉ Eofusulinatriangula亚带 ,1 ) .Profusulinellastaffellaeformis亚带。通过与华南、华北、西北沉积区和欧美同期地层的对比 ,认为本区含Profusulinella动物群的地层应归于上石炭统达拉阶下部 ,相当于国际地层表中的巴什基尔阶上部至莫斯科阶下部

2 LATE CARBONIFEROUS PROFUSULINELLA FAUNA FROM SHANGHANG OF FUJIAN AND ITS STRATIGRAPHIC SIGNIFICANCE

2004(2). DOI: 1 CSTR:

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Abstract:

3 PROFESSOR HUANG JI-QING AND THE PERMIAN OF CHINA

SHENG Jin-Zhang , LI Xing Xue

2004(2):161-163. DOI: 1 CSTR:

[Abstract](232) [HTML](0) [PDF 0.00 Byte](5)

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Professor Huang Ji qing (Huang T.K.) devoted his early years to studies of the stratigraphy, corals and brachiopods of the Permian System in South China. Based upon the studies, he emphasized the reality of three fold subdivision of the Permian System in South China, in descending order, the Lopingian, Yangsinian, and Chuanshanian, with a comparable bottom boundary to those of the classic areas around the world. However,in the subsequently accepted scheme only the former two series were retained, while the last series was excluded from Permian and included in the Carboniferous based on an obvious depositional break between the second and third series on the Yangtze Platform. Although Huang's professional career was mainly working on tectonics, he had been still keeping an eye on the study of Permian System in China since the late thirties of the last century. The discovery of the continuous sequences ranging from the Carboniferous to Permian in southwest Guizhou and northwest Guangxi provided him an evidence for reviewing the subdivisions and lower boundary of the Permian in South China. An almost the same three fold scheme as fifty years ago, Lepingian (formerly, Lopingian), Yangxinian (formerly, Yangsinian) and Qiannanian (formerly, Chuanshanian ) was suggested again and dramatically appeared in his last monograph (Huang and Chen, 1987). Now, the Chinese geologists have already generally accepted this scheme.

4 EARLY CAMBRIAN SMALL SHELLY FOSSIL SINOSACHITES FROM SOUTHWEST CHINA

Abstract

2004(2):164-178. DOI: 1 CSTR:

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采自四川峨嵋和云南会泽的磷酸盐化的Sinosachites骨片显示出中央沟和侧沟结构，并区别出三种不同类型的骨片(palmate，cultrate and siculate)。这一发现证实，产于澳大利亚的Thambetolepis(Jell，1981)是Sinosachites的晚出同义名。基于上述结构，该产地一些原定为Sachites和Halkieria的标本亦应归入Sinosachites。在Sinosachites属中确认出两个种，即产于华南的Sinosachites flabelliformis He和产于澳大利亚的Sinosachites delicatus(Jell)。在前一种中，左右型对称骨片的存在证实该动物两侧对称。骨片的基部通常保存为磷质内核，表明它比骨片壁更容易磷酸盐化，在组织学上它与骨片壁不同。骨片的基部可能原为有机质或部分矿化。在Sinosachites中，无帽状和束状骨片可能表明在coeloscleritophorans中halkieriids是一个介于wiwaxids和siphogonuchitids之间的类群。

5 ORIGIN,DISPERSAL AND BIOGEOGRAPHIC AFFINITY OF THE MIDDLE-LATE ORDOVICIAN AND THE LLANDOVERY RUGOSE CORALS IN THE YANGTZE REGION

Abstract

2004(2):179-191. DOI: 1 CSTR:

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The Middle Ordovician Llandovery rugose corals are abundant in the Yangtze region, especially in the Early Silurian. Altogether 123 genera of Rugosa,which contain 4 genera of Middle Ordovician,25 genera of Late Ordovician,and 94 genera of Llandovery respectively,have been reported from this region, of which 30 genera first appeared in the Yangtze region and then dispersed to Europe and North America and other adjacent regions. The following may represent the earliest occurrence age of the referred genera. Calostylis in the Middle Ordovician(Llandeilo)of southern Sichuan; Aphyllum and Cantrillia in the middle Ashgill of western Zhejiang; the streptelasmatids Briantelasma, Pycnactis and Tunguselasma in the late Ruddanian of northeastern Guizhou; the columnariids Ceriaster, Stauria, Amplexoides and Synamplexoides , and the cystiphyllids Maikottia, Rhizophyllum among others in the Middle Llandovery of northeastern Guizhou, South China. Based on these data, We may regard that the Yangtze region may have been one of the origin centers for the Ordovician and Silurian rugose corals. This paper deals with the Middle Ordovician to Llandovery rugose coral faunas in the Yangtze region, especially with their palaeobiogeographic affinities. The Middle Ordovician Rugosa of this region is characterized by the calostylids Calostylis and Yohophyllum . The Late Ordovician (mid Ashgill) rugosan fauna from the Sanjushan Formation of western Zhejiang Province contains some Australian elements (Hillophyllum, Bowanophyllum) , while the late Ashgill rugose fauna from the Guanyinqiao Bed in the Upper Yangtze region shows a high degree of similarity to that of North Europe, indicating that Yangtze and Europe have a close palaeobiogeographic affinity with each other. The Llandovery rugose fauna in the Yangtze region is much closer with that of Siberia, Kazakhstan and Australia.

6 EARLY TRIASSIC AMMONOID SUCCESSION IN CHAOHU,ANHUI PROVINCE

Abstract

2004(2):192-204. DOI: 1 CSTR:

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The uppermost Permian and Lower Triassic are completely exposed in Mt. Pingdingshan and Mt. Ma jiashan , Northwest Chaohu City, Anhui Province, East China, where the Lower Triassic is well developed and composed of the alternations of mudrock and limestone deposited on a deep part of the Lower Yangtze carbonate ramp, containing rich ammonoid fossils. 37 genera and 60 species are recognized from the uppermost Permian and Lower Triassic at the North Pingdingshan Section, West Pingdingshan Section and South Majiashan Section. In addition, many specimens were also collected from the North Majiashan Section and the Guimengguan Section in South Chaohu. A complete Lower Triassic ammonoid zonation can be retrieved in ascending order: Ophiceras Lytophiceras Zone, Gyronites Prionolobus Zone, Flemingites Euflemingites Zone, Anasibirites Zone, Columbites Tirolites Zone and Subcolumbites Zone. The base of the Flemingites Euflemingites Zone is very close to the FAD of conodont Neospathodus waageni at the West Pingdingshan Section, which was proposed as the GSSP of the Induan Olenekian boundary. This paper describes some better preserved ammonoid fossils of biostratigraphic importance with emphasis on those around the Induan Olenekian boundary, plus a few specimens from the uppermost Permian Tapashanites Pleuronodoceras Zone.

7 FOSSIL PLANTS FROM THE LATE MIDDLE JURASSIC IN YABULA BASIN,WESTERN NEI MONGOL,CHINA

DENG Sheng Hui ) , LIU Yong Chang ) , YUAN Sheng Hu ) ) Research Institute of Petroleum Exploration , Development , Beijing , ) Research Institute of Petroleum Exploration , Development of Yimen Petroleum Corporation , Yimen , Gansu ,

2004(2):205-220. DOI: 1 CSTR:

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The plant fossils described in this paper were collected by the authors in 1998 from the upper part of the Xinhe Formation of Hongliugou section in Yabula Basin, western Nei Mongol (Inner Mongolia), China (Text fig. 1). The Xinhe Formation, which rests directly on the Proterozoic bojite and is overlain conformably by the Upper Jurassic Shazaohe Formation, is characterized by gray, grayish green coarse grained sandstone, muddy siltstone, calcic mudstone in the lower part, and brown or red medium grained sandstone alternated with gray or grayish green muddy sandstone, mudstone and intercalated with very few coal streaks in the upper part. The plant fossils were collected from the gray or grayish green colored rocks in the upper part.thedistributionofthechiefelements ,theflorashould beattributedtothelateMiddleJurassic ,probably Bathonian Callovian .Amongtheknownspecies ,Co niopterishymenophylloide ,C .burejensisandO tozamitesgramineusappearedintheMiddleJurassic YorkshireFloraofEnglandandotherflorasofthe sameageintheworld .Theappearanceofthese speciesstronglysuggeststhatthepresentfloraisMid dleJurassicinage .Coniopterisangustilobaisfound frequentlyintheMiddleJurassicinMiddleAsia .Ac cordingtotheliteratures ,theJurassicflorainNorth Chinareachedthepeakofitsdevelopmentduringthe earlyMiddleJurassic ,andthengraduallydeclinedin BathonianandCallovian .TheflorasofAalenianand Bajocianare generallycomposedofmorethan 1 0 0 species,whichisdominatedbyFilicopsidaand Ginkgopsida ,whiletheBathonianflorasusuallyde creasestoonly 2 0 - 30species,whichischaracterized byCycadopsidaandscaleleafconifers .Thepresent floraisaveryreducedonethatconsistsofonlya dozenofspecies,andischaracterizedbycycado phytes .ThismeansthatthepresentfloraislateMid dleJurassicinage (Bathonian Callovian) . Asmentionedabove ,theXinheFormationis characterizedby grayishmudstone ,muddysiltstone andbrownred brownsandstone ,withoutcoalbeds intercalatedexceptveryfewcoal streaks .Thiscanbe consideredasatypicalupperMiddleJurassicstratum . StudieshaveshownthatinthewholeNorthChina , theJurassicisdividedverticallyintotwoparts .The loweroneincludingtheLowerandlowerpartofthe MiddleJurassicisdominatedbycoal bearingsedi ments;whiletheupperoneincludingtheupperpart oftheMiddleJurassicandUpperJurassicchieflycon sistsofgray ,brownandredcoloredsediments ,usu allywithoutindustrialcoalbedsexceptsomecoal streaks .TheUpperJurassicischaracterizedbyase riesofredcoloredrocks ,usuallywithrareplantfos sils.Therefore ,theXinheFormationisreliablyas signedtotheupperpartoftheMiddleJurassic ,and theupper partoftheXinheFormationshouldbe BathoniantoCallovian . ThepresentfloracompareswiththoseofSub tropicalPhytogeographicalRegion (Euro Asianre gion)incomposition .Themajorcontentoftheflora iscycadophytes ,especiallyOtozamites ,agenusthat usuallyoccursinSouthChina ,MiddleAsiaandEu rope ,butishardlyfoundinNorthChinaandSiberia duringtheJurassic .Therefore ,thepresentflorabe longstotheSouthChinatypethoughitoccursinvery northarea .Thissuggeststhattheboundarybetween theSouthandNorthPhytogeographicalRegionsis notalongtheKunlun Qilian DabieMountainsasin theEarly MiddleJurassic (beforeBathonian) .It greatlymovednorthwardsduringthelateMiddle Jurassicduetotheclimatechanging ,andwouldlo catedinnorthofNeiMongol (possiblyinMongolia) inwestandattheYinshanMountainsineast.

8 MESOZOIC TRACE FOSSILS FROM LHOZHAG AREA OF SOUTHERN TIBET AND THEIR ENVIRONMENTAL SIGNIFICANCE

ZHOU Zhi Cheng ) , H. Willems ) , XIA Jun ) , ZHONG Hua Ming ) , TONG Jing Song ) ) Nanjing Institute of Geology , Palaeontology , Chinese Academy of Sciences , Nanjing ) Fachbereich Geowissenschaften , University Bremen , Bremen , Germany ) Anhui Academy of Geological Survey , Hefei

2004(2):221-233. DOI: 1 CSTR:

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详细描述了西藏南部洛扎地区中生代地层中所含的遗迹化石Arenicolites sp.,Beaconites antarcticus,Chondrites sp.A,C,sp.B,C.sp.C,C.sp.D.?Cruziana semiplicata,Palaeophycus tubularis,Phycodes circinatum,Protovirgularia dichotoma,Skolithos verticalis,Teichichnus rectus和Unarites sulcki计10遗迹属13遗迹种，并讨论它们的环境意义。

9 AN ABRUPT VARIATION EVENT OF STROMATOLITIC MICROSTRUCTURES IN THE NEOPROTEROZOIC AND ITS ORIGINATION BACKGROUND

HUA Hong , ) , CAO Rui Ji ) )The Key Laboratory of Northwest University Continental Dynamics , Ministry of Education , Xi''''an , ) Department of Geology , Northwest University , Xi''''an , ) Nanjing Institute of Geology , Palaeontology , Chinese Academy of Sciences , Nanjing ,

2004(2):234-245. DOI: 1 CSTR:

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A sharp reduce in both the diversity and abundance of the stromatolites occurred at the boundary of the Neoproterozoic Shisanlitai and Majiatun Formations in southern Liaoning, as well as Weiji and Shijia Formations in northern Anhui and Jiangsu respectively. The abrupt change of stromatolitic microstructure accompanied with a distinct negative shift of carbon isotope values of carbonate carbon, is the key marker of an oceanographic chemical change, and consequently is of an isochoronic event. More evidences include the near synchronous occurrence of tussocky microstructure in the Pre Sinian strata, and its correlated shift of carbon isotope values in Majiatun and Shijia Formations, as well as formation I 6 of the Upper Riphean Atar Group in Mauritania. The tussocky microstructure is thought to be a special calcified blue alga, and temporal oceanic stratification and upwelling of the anoxia deep water afterwards may be the provenances of its calcification and the corresponding negative shift of carbon isotope values. The anomaly high hydrothemal flux in a time span from 850 Ma to 800 Ma indicated by the strontium isotopic ratios coincides with production of large amount of juvenile crust and rifting of a super continent, and gave rise to the transient oceanic stratification and enhancement of calcification of blue algae.

10 DIAGNOSTIC PHYTOLITHS FROM NEI MONGOL GRASSLAND

HUANG Fei ) , Kealhofer Lisa ) , HUANG Feng Bao ) ) Nanjing Institute of Geology , Palaeontology , the Chinese Academy of Sciences , Nanjing ) Anthropology , Sociology Department , Santa Clara University

2004(2):246-253. DOI: 1 CSTR:

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The use of modern phytolith assemblages for the interpretation of fossil phytoliths shows phytolith analysis is an effective method for understanding the grassland vegetation and climate changes. This paper presents firstly a phytolith reference collection and classification system for Nei Mongol grassland, 23 species of grasses were collected from the studied area, and separated into different leaf, glume, awn and so on for diagnostic Poaceae short cell phytolith investigations. 8 phytolith morphotypes were identified. The phytolith morphotypes from the selected species demonstrate that all Pooideae (C 3) subfamily grasses produce rondel form, especially Stipa baicalens ( 85.5% ), S. grandis (89.7%), S. krylovii (90%) and Aneurolepidium chinese (69.1%). Stipa bilobate form is a useful diagnostic type for differentiating the Stipa dominated grassland. Of the short cell phytoliths produced by Agropyron desertorum , about 74.4% of them are keeled rondel. The increase of percentage of the keeled rondel in the soil assemblages would aid in understanding the grassland desertification processes. Cleistogenes squarrosa of Chloridoideae subfamily (C 4) is dominated by panicoid lobate, simple bilobate and saddle forms, and Setaria viridis of Panicoideae subfamily (C 4) is mainly distinguished by panicoid lobate. The percentage of simple bilobate in the soil assemblages would be helpful for understanding the phytolith assemblages produced by Cleistogenes squarrosa dominated grasslands.

11 LATE CENOZOIC PALYNOFLORAS FROM QUJING BASIN,YUNNAN,CHINA

WANG Wei Ming , SHU Jun Wu

2004(2):254-261. DOI: 1 CSTR:

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根据曲靖盆地曲参-井60块样品的分析结果，共识别出5个孢粉组合带，反映曲靖地区晚新生代植物群面貌及变化过程。植物群在总体构成上比较单调，第一组合带中，栎属占绝对优势，组成栎树林，周围山地则主要分布松树林；栎树林在第二组合带分布范围减少，松属和铁杉属明显增加，可能反映地壳的抬升或气候变冷；栎树林在第三组合带得到全面恢复，反映植物生境转好；第四组合带为一渐变期，反映栎树林再度开始消减，松树林和蕨类植物则递增；孢粉植物群在第五组合带发生明显的变化，松科植物大量分布，栎树林已在很大程度上消退，蕨类植物得到较大的发展，其它草本植物的含量也有所增加，反映植物生境再次发生大的变化。曲靖地区晚新生代植物群具有向上类型略有增多的特点，表现为原始栎树林的消退、扩张、再消退的变化规律。推测当地两次栎树林的消退过程可能分别与发生在3．4Ma和2．5Ma青藏高原隆升以及全球性气候变冷相关。

12 LATE JURASSIC SPOROPOLLEN ASSEMBLAGE FROM THE WELL TANGCAN-1 OF THE SANTANGHU BASIN,XINJIANG

HUANG Pin ) , XU Xiao Shan ) ) Nanjing Institute of Geology , Palaeontology , the Chinese Academy of Sciences , Nanjing ) Department of Earth Sciences , Nanjing University , Nanjing

2004(2):262-280. DOI: 1 CSTR:

[Abstract](345) [HTML](0) [PDF 0.00 Byte](5)

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研究的孢粉化石发现于新疆三塘湖盆地塘参1井齐古组(井深955—1238m)，共计53属130种(包括1新属：Santanghusporites gen．nov．和6新种)，其中蕨类植物孢子24属40种，裸子植物花粉29属90种。组合以高含量的Classopollis、丰富的松柏类花粉及含少量早白垩世的分子为特征。根据孢粉组合特征，其时代应归为晚侏罗世。

13 CARBONIFEROUS CONODONTS FROM THE TYPE SECTION OF HUASHIBANIAN IN CHINA

WANG Zhi Hao , ZHANG Lin Xin , QI Yu Ping

2004(2):281-286. DOI: 1 CSTR:

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The present paper studies in detail the conodonts from the type section of the Huashibanian. They are Neognathodus symmetricus, Declinognathodus noduliferus noduliferus, D. noduliferus inaequalis, D.lateralis, Idiognathoides corrugatus, I.sinuatus and I.sulcatus , referred to the Neognathodus symmetricus Zone. The base of Huashibanian is within the Neognathodus symmetricus Zone. At the type section, the most part of Huashibanian is corresponding to the middle part of Bashkirian of the international stratigraphic chart or Morrowan of North America.

14 TRACE ELEMENT COMBINATIONS IN UPPER CRETACEOUS DINOSAUR EGG FOSSILS FROM XIXIA BASIN AND DISCUSSION ON PALEOCLIMATE

ZHANG Yu Guang , ) , PEI Jing ) ) Beijing Natural History Museum , Beijing ) Institute of Vertebrate Paleontology , Paleoanthropology , Chinese Academy of Sciences , Beijing ) Institute of high energy physics , Chinese Academy of Sciences , Beijing

2004(2):297-302. DOI: 1 CSTR:

[Abstract](275) [HTML](0) [PDF 0.00 Byte](5)

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Neutron activation analysis of respectively samplings of dinosaur egg fossils and wall rocks from the Upper Cretaceous in Xixia, Henan Province demonstrates that elementary combinations in the dinosaur egg fossils are featured by obvious abnormal high contents of both iridium and strontium,which are inferred to have caused fabric and pathological changes of those eggs. Thereby the dinosaur eggs couldn't be hatched, and probably resulted in the high concentration of their fossils. Moreover,the analysis of elementary combinations as well as geological data indicates that the climate during the Late Cretaceous in this area might have been semiarid to arid.

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