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1.
KUOTA CHAN 《地质学报》1938,(Z1)
Two subdivisions of the Red Beds can be distinguished,the older being un-conformably overlain by the younger.They are tentatively considered Cretaceousand early Tertiary in age respectively.A critical review shows that the Tanhsiaformation of K.L.Fong represents the lower part of the younger Red Bedswhile his Nanhsiung formation,instead of overlying the Tanhsia,is referableto the older Red Series.Two types of the older Red Beds are distinguishedaccording to their petrological contents:the common type an... 相似文献
2.
"Red Beds" of Yunnan 总被引：2，自引：0，他引：2
正 The extensive development of the so-called 'Red Beds" in Central andWestern Yunnan was first made known through the different reports of J. 相似文献
3.
CHUNG-CHIEN YOUNG 《地质学报》1942,(Z1):64-106
正 From the "Red Beds" at Lufeng, Yunnan, two forms of Saurischia, Lufengosaurus huenei and Gyposaurus sinensis, have been described heretofore: Recently, a well-preserved skeleton of an undoubtedly new type of another 相似文献
4.
LI Guobiao 《《地质学报》英文版》2007,(6)
As one of the mélanges in the southern side of the Yarlung-Zangbo suture zone,the Saiqu mélange in southern Tibet is important for understanding the evolution of the Neo-Tethys ocean.The age of the Saiqu mélange,however,has been debated due to the lack of reliable fossil evidence in matrix strata.Based on lithological similarities with platform strata in southern Tibet and limited fossils from exotic blocks,previous studies variously ascribed the Saiqu mélange to be Triassic in general,Late Triassic,or Late Cretaceous.Here we reported planktonic foraminiferal faunas from the matrix strata of the Saiqu mélange.The new fossils yield a Late Cretaceous age,which is so far the best age constraint for the mélange.Regional stratigraphic correlation indicates that the Cretaceous Oceanic Red Beds (CORBs)in Saiqu may be time equivalent to the CORBs of the Zongzhuo Formation in neighboring regions.Thus the Saiqu mélange should be correlated to the Upper Cretaceous Zongzhuo Formation rather than the Triassic Xiukang Group,as previously suggested. 相似文献
5.
LI Guobiao WAN Xiaoqiao JIANG Ganqing HU Xiumian GOUDEMAND Nicolas HAN Hongdou CHEN Xi 《《地质学报》英文版》2007,81(6)
As one of the mélanges in the southern side of the Yarlung-Zangbo suture zone, the Saiqu mélange in southern Tibet is important for understanding the evolution of the Neo-Tethys ocean. The age of the Saiqu mélange, however, has been debated due to the lack of reliable fossil evidence in matrix strata. Based on lithological similarities with platform strata in southern Tibet and limited fossils from exotic blocks, previous studies variously ascribed the Saiqu mélange to be Triassic in general, Late Triassic, or Late Cretaceous. Here we reported planktonic foraminiferal faunas from the matrix strata of the Saiqu mélange. The new fossils yield a Late Cretaceous age, which is so far the best age constraint for the mélange. Regional stratigraphic correlation indicates that the Cretaceous Oceanic Red Beds (CORBs) in Saiqu may be time equivalent to the CORBs of the Zongzhuo Formation in neighboring regions. Thus the Saiqu mélange should be correlated to the Upper Cretaceous Zongzhuo Formation rather than the Triassic Xiukang Group, as previously suggested. 相似文献
6.
A new species of Shuyuidae (Eugaleaspiformes, Galeaspida), Jiangxialepis jiujiangensis sp. nov., is described from the lower Telychian (Llandovery, Silurian) Qingshui Formation in Jiujiang, Jiangxi Province, China. The new species differs from the type species J. retrospina from Wuhan, Hubei Province in its sharp and posteriorly positioned median dorsal spine and narrow spine-shaped inner cornual processes. The Silurian strata in Xiushui–Wuning area has provided a standard framework for the correlation of Silurian shallow marine red beds in South China. Thus, the finding of J. jiujiangensis from the Silurian Lower Red Beds (LRBs) in Jiangxi Province bears very important biostratigraphic significance. It can directly compare to Jiangxialepis retrospina from the Fentou Formation in Wuhan, Hubei Province in the genus level. This indicates that the age of the fish-bearing strata in Wuhan is most likely to be the early Telychian rather than middle Telychian as previously assumed. 相似文献
7.
CHUNG-CHIEN YOUNG 《地质学报》1948,(Z1):83-104
正 The so far described Saurischians,Lufengosaurus huenei,L.magnus,Yunnanosaurus huangi and Gyposaurus sinenensis~1 from die Red Beds ofLufeng,Yunnan,belong all to the sub-order Prosauropoda.In die present 相似文献
8.
LIU Yanxue LIU Yongqing ZHANG Hong 《《地质学报》英文版》2006,80(5):733-742
LA-ICPMS Zircon U-Pb dating is applied to volcanic rocks overlying and underlying the Salamander-bearing bed in the Daohugou beds of Ningcheng in Inner Mongola and Reshuichang of Lingyuan and Mazhangzi of Jianping in western Liaoning. The results indicate that the youngest age of the rocks in Daohugou of Ningcheng is 158 Ma, and the oldest one is 164 Ma. Synthesized researches indicate that the salamander-bearing beds in Daohugou of Ningcheng, Reshuichang of Lingyuan and Mazhangzi of Jianping were developed in the same period. The Daohugou beds were formed in the geological age of 164-158 Ma of the middle-late Jurassic. Whilst, the Daohugou beds and its corrdative strata should correspond to the Tiaojishan Formation （or Lanqi Formation） of the middle Jurassic in northern Hebei Province and western Liaoning Province, based on the disconformity between the Daohugou beds and its overlaying beds of the Tuchengzi Formation of Late Jurassic and the Jehol Beds of early Cretaceous, and the disconformity between the Daohugou Beds and its underlying Jiulongshan Formation, which is composed of conglomerate, sandstone, shale with coal and thin coal beds. 相似文献
9.
LI Guobiao WAN Xiaoqiao JIANG Ganqing HU Xiumian GOUDEM Nicolas HAN Hongdou CHEN Xi 《《地质学报》英文版》2007,81(6):917-924
As one of the mélanges in the southern side of the Yarlung-Zangbo suture zone, the Saiqu mélange in southern Tibet is important for understanding the evolution of the Neo-Tethys ocean. The age of the Saiqu mélange, however, has been debated due to the lack of reliable fossil evidence in matrix strata. Based on lithological similarities with platform strata in southern Tibet and limited fossils from exotic blocks, previous studies variously ascribed the Saiqu mélange to be Triassic in general, Late Triassic, or Late Cretaceous. Here we reported planktonic foraminiferal faunas from the matrix strata of the Saiqu mélange. The new fossils yield a Late Cretaceous age, which is so far the best age constraint for the mélange. Regional stratigraphic correlation indicates that the Cretaceous Oceanic Red Beds (CORBs) in Saiqu may be time equivalent to the CORBs of the Zongzhuo Formation in neighboring regions. Thus the Saiqu mélange should be correlated to the Upper Cretaceous Zongzhuo Formation rather than the Triassic Xiukang Group, as previously suggested. 相似文献
10.
《中国地球化学学报》2006,(Z1)
In this work we present a new approach to modeling the effects of CO2 sequestration that was tested in the Weyburn test site. The Weyburn oil-pull is recovered from Midale Beds (at 1300–1500 m depth). This formation consists of Mississippian shallow mari… 相似文献
11.
The planktic foraminifera of the Chuangde Formation (Upper Cretaceous Oceanic Red Beds, CORBs) as exposed at Tianbadong section, Kangmar, southern Tibet has been firstly studied for a detailed for a detailed biostratigraphy elaboration. A rich and well-preserved planktic foraminifera were recovered from the Chuangde Formation of the Tianbadong section and the Globotruncanita elevata, Globotruncana ventricosa, Radotruncana calcarata, Globotruncanella havanensis, Globotruncana aegyptiaca, Gansserina gansseri and Abathomphalus mayaroensis zones have been recognized. The planktic foraminiferal assemblage points to an early Campanian to Maastrichitian age for the CORBs of the eastern North Tethyan Himalayan sub-belt, which also provides a better understanding of the shifting progress of the Indian Plate to the north and the evolution of the Neotethyan ocean. The lithostratigraphy of the Chuangde Formation of the Tianbadong section comprises two lithological sequences observed in ascending succession: a lower unit (the Shale Member) mainly composed of purple (cherry-red, violet-red) shales with interbedded siltstones and siliceous rocks; and an upper unit (the Limestone Member) of variegated limestones. The strata of the Chuangde Formation in the Tianbadong section are similar to CORBs in other parts of the northern Tethyan Himalaya area of Asia (Gyangze, Sa’gya, Sangdanlin, northern Zanskar, etc.). The fossil contents of the Chuangde Formation in the sections (CORBs) studied provide a means of correlation with the zonation schemes for those of the northern Tethyan Himalayan sub-belt and the Upper Cretaceous of the southern Tethyan Himalayan sub-belt. Paleogeographic reconstruction for the Late Cretaceous indicates that the Upper Cretaceous Chuangde Formation (CORBs) and correlatable strata in northern Zanskar were representative of slope to basinal deposits, which were situated in the northern Tethyan Belt. Correlatable Cretaceous strata in Spiti and Gamba situated in the southern Tethyan Belt in contrast were deposited in shelf environments along the Tethyan Himalayan passive margin. CORBs are most likely formed by the oxidation of Fe(II)-enriched, anoxic deep ocean water near the chemocline that separated the oxic oceanic surface from the anoxic. 相似文献
12.
Described in paper is the principle of optimal partitioning method for stratigraphic division and correlation.The Nihewan Beds are taken for example to show how to apply this approach in stratigraphic division and correlation.The semiquantitative spectral analysis data on aggregate trace elements in 324 samples taken from the nine sections in the Nihewan Basin are treated with multivariate statistical method for stratigraphic division and correlation.First ,the data from all the sections are respectively calculated by the optimal partitioning method to establish the stratigraphic boundaries.The optimal partitioning method has proved itself to be applicable to stratigraphic division and correlation. In our practice the Nihewan Beds are divided into five zones (I-V).Zone I includes subzones Ia and Ib,Zones Ia,Ib,II and III are considered to be corresponding to the Pliocene(N2),the early Early Pleistocene,the late Early Pleistocene,and the Middle Pleistocene,respectively .Zones IV and V are probably Late Pleistocene in age.This indicated that sediments deposited con-temporaneous in the sections of the same basin are similar in geochemical characteristics,although dif-ferent in geographical location.However,the sediments also show some variations ,with a transitional relationship from one section to another .For example ,in Zone II,the sediments of the Xiaodukou section show not only the characteristics of the Nangou-Hongya and Hutouliang sections,but also those of the Xiashagou,Shixiaxi,Shixiadong and Wulitai sections.It can be seen from the above that the zones can be characteristically correlated with one another.In addition the feasibility of the optimal partitioning method is also described in the present paper. 相似文献
13.
20033056 Mao Yukun (Yuxi Branch, Territory Construction Engineering Company of Yunnan, Yuxi, Yunnan) The New Means Protecting Drilling Hole in Sinian Broken Carbonate Beds in Central Yunnan Province (Yunnan Geology, ISSN1004-1885 , CN53 -1041/P, 22(2), 2003, p. 206-210, 4 tables, 3 refs. ) 相似文献
14.
EARTHQUAKE FOCAL MECHANISM AND ITS TECTONIC SIGNIFICANCE ALONG THE TWO SIDES OF THE RED RIVER FAULT ZONE 总被引：1，自引：0，他引：1
The Red River Fault Zone is a gigantic slide-slip fault zone extending up to 1000km from Tibet to South China Sea. It has been divided into the north, central and south segments according to the difference of the geometry, kinetics, and seismicity on the land, but according to the contacted relationship between the old pre-Cenozoic block in Indochina Peninsula and the South China block, the Red River Fault Zone was divided into two parts extending from land to ocean, the north and south segments. Since the Tertiary, the Red River Fault Zone suffered first the sinistral movement and then the dextral movement. The activities of the north and the south segments were different. Based on the analysis of earthquakes and focal mechanism solutions, earthquakes with the focus depths of 0-33km are distributed over the whole region and more deep earthquakes are distributed on the northeastern sides of the Red River fault. Types of faulting activities are the thrust in the northwest, the normal in the north and the 相似文献
15.
Rasmy I.El-Gharbawy 《中国地球化学学报》2011,30(2):193-203
The Tertiary granitic intrusive body(～21 Ma) of the Jabal Sabir area was emplaced during the early stages of the Red Sea opening.This intrusive body occupies the southern sector of Taiz City.It is triangular in shape,affected by two major faults,one of which is in parallel to the Gulf of Aden,and the other is in parallel to the eastern margin of the Red Sea coast.The petrogenesis of such a type of intrusion provides additional information on the origin of the Oligo-Miocene magmatic activity in relation to the rifting tectonics and evolution of this part of the Arabian Shield.The granitic body of Jabal Sabir belongs to the alkaline or peralkaline suite of A-type granites.It is enriched in the REE.The tight bundle plot of its REE pattern reflects neither tectonism nor metamorphism.This granite body is characterized by high alkali(8.7%-10.13%),high-field strength elements(HFSE),but low Sr and Ba and high Zn contents.The abundance of xenoliths from the neighboring country rocks and prophyritic texture of the Jabal Sabir granite body indicate shallow depths of intrusion.The major and trace elements data revealed a fractional crystallization origin,probably with small amounts of crustal contamination.It is interpreted that the Jabal Sabir intrusion represents an anorogenic granite pertaining to the A-type,formed in a within-plate environment under an extensional tectonic setting pertaining to rift-related granites. 相似文献
16.
CHEN Yang GAI Zhikun LI Qiang WANG Jianhu PENG Lijian WEI Guangbiao ZHU Min 《《地质学报》英文版》2022,96(2):430-439
A new genus and species of agnathan Eugaleaspidiformes (Galeaspida), Yongdongaspis littoralis gen. et sp. nov., is described from the Llandovery (lower Silurian) Huixingshao Formation at Yongdong Town, Xiushan County, Chongqing, southwestern China. This new Telychian taxon morphologically exhibits some transitional states between Sinogaleaspidae and a cluster of higher eugaleaspidiforms containing Tridensaspidae, Eugaleaspidae, Yunnanogaleaspis, and Nochelaspis, which we term here as the ‘eugaleaspid cluster’. Phylogenetic analysis of an extended character matrix of Galeaspida reveals Yongdongaspis, on which Yongdongaspidae fam. nov. is erected, as the sister taxon of this ‘eugaleaspid cluster’, supported by two synapomorphies, the presence of one median transverse canal, and two lateral transverse canals leaving from the infraorbital canal. As the first fish described from the Llandovery Huixingshao Formation in Chongqing, Yongdongaspis provides new fossil evidence for the subdivision and correlation of the Upper Red Beds in South China. 相似文献
17.
http://www.sciencedirect.com/science/article/pii/S1674987113000595 总被引：11，自引：0，他引：11
Mei-Fu Zhou Wei Terry Chen Christina Yan Wang Stephen A.Prevec Patricia Pingping Liu Geoffrey H.Howarth 《地学前缘(英文版)》2013,4(5):481-502
Magmatic oxide deposits in the～260 Ma Emeishan Large Igneous Province(ELIP),SW China and northern Vietnam,are important sources of Fe,Ti and V.Some giant magmatic Fe-Ti-V oxide deposits, such as the Panzhihua,Hongge,and Baima deposits,are well described in the literature and are hosted in layered mafic-ultramafic intrusions in the Panxi region,the central ELIP.The same type of ELIP- related deposits also occur far to the south and include the Anyi deposit,about 130 km south of Panzhihua,and the Mianhuadi deposit in the Red River fault zone.The Anyi deposit is relatively small but is similarly hosted in a layered mafic intrusion.The Mianhuadi deposit has a zircon U-Pb age of～260 Ma and is thus contemporaneous with the ELIP.This deposit was variably metamorphosed during the Indosinian orogeny and Red River faulting.Compositionally,magnetite of the Mianhuadi deposit contains smaller amounts of Ti and V than that of the other deposits,possibly attributable to the later metamorphism.The distribution of the oxide ore deposits is not related to the domal structure of the ELIP.One major feature of all the oxide deposits in the ELIP is the spatial association of oxide-bearing gabbroic intrusions,syenitic plutons and high-Ti flood basalts.Thus,we propose that magmas from a mantle plume were emplaced into a shallow magma chamber where they were evolved into a field of liquid immiscibility to form two silicate liquids,one with an extremely Fe-Ti-rich gabbroic composition and the other syenitic.An immiscible Fe-Ti-(P) oxide melt may then separate from the mafic magmas to form oxide deposits.The parental magmas from which these deposits formed were likely Fe-Ti-rich picritic in composition and were derived from enriched asthenospheric mantle at a greater depth than the magmas that produced sulfide-bearing intrusions of the ELIP. 相似文献
18.
<正>20151794 Cai Xiyao(Research Institute of Exploration and Production,SINOPEC,Beijing100083,China);Yuan Xiaohong Conodonts from the Upper Ordovician in Well Z-2of the Central Tarim Basin and the Age of ConodontBearing Reefal Beds(Acta Micropalaeontologica Sinica,ISSN1000-0674,CN32-1189/Q, 相似文献
19.
Geoffrey S. Plumlee Kirk R. Vincent Steve Ludington Philip L. Verplanck D. Kirk Nordstrom 《中国地球化学学报》2006,25(B08):231-232
Prominent erosional scars on hillslopes along the Red River Valley have steep, denuded slopes and associated down-gradient debris fans. The scars developed naturally on stockwork-veined, quartz-sericite-pyrite （QSP）-altered volcanic rocks proximal to porphyry-Mo deposits, including those mined at the Molycorp＇s Questa mine. Downcutting of the Red River, following development of the Rio Grande rift to the west, initiated scar formation. Mineralized rocks in the scars were decomposed chemically （by pyrite oxidation and acid weathering） and physically （by freeze-thaw action and volume expansion from secondary gypsum formation） to produce a weathered veneer of sand- to pebble-size fragments of unweathered rock in a matrix of secondary gypsum, clays, and jarosite. Unoxidized QSP-altered bedrock crops out in steep scar gully bottoms, indicating that the weathered veneer is at most 3-30 m thick. Acidic （pH 2.6 to 4.4）, metal-rich waters develop in the weathered veneer and near-surface bedrock of the scars. Carbonates in the unweathered, QSP-altered bedrock are sufficient to neutralize acid in deeper ground waters, which have near-neutral pH （5.7 to 7.6） and lower metal contents. The scars grow along steep headwalls by slope failure of the weathered veneer. 相似文献
20.
SUN Xiang DENG Jun WANG Qingfei GONG Qingjie YANG Liqiang WANG Changming 《《地质学报》英文版》2010,84(6):1415-1427
<正>Red clay type gold deposits,located in the south of China,are situated not only in orogenic belts,but also in inner cratons,where climate is tropical-subtropical with clear arid and humid.The lateritic weathering crust often can be divided into five zones,including topsoil,siliceous duricrust zone,multi-color zone(or red clay zone in some deposits),pallid zone and saprolite zone from surface to the base rock,several of which are absent in some deposits.The base rocks are composed mainly of carbonate rocks with minor clastic rocks,intermediate-basic volcanic rocks and intermediate-acid and alkalic intrusions.The orebodies are mainly located in the multi-color zone with part of them in the pallid and saprolite zones.The ore sources include orebodies of Carlin-type gold deposits and porphyry gold deposits,as well as gold-rich base rocks.The red clay type gold deposits experienced early-stage endogenic gold mineralization and laterization during the Tertiary and Quaternary.The areas with endogenic gold deposits,especially Carlin-type gold deposits and porphyry gold deposits in karst depressions on the plateau,structual erosional platforms in the middle-lower mountains,and intermountain basins in southern China are well worth studying to trace red clay type gold deposits. 相似文献