1986 Vol. 4, No. 4
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Display Method:
1986, 4(4): 1-27.
Abstract:
Lakes developed well in China as the continent eapaaded is the Mesozoic and Ce- aozoic eras. Quite many lakes were large structural Iakes with long developing his- tort'. T hick dark-colored mudstoaes(or shales)rich in organic matter were deposited in deep w ater area and formed good source rocks. Various porous rocks neighbouring to them could form oil-gas reserviors, is which sandbodies is lake basics were most advantageaeous to the oil-gas accumulation as found so far in China.
Lakes developed well in China as the continent eapaaded is the Mesozoic and Ce- aozoic eras. Quite many lakes were large structural Iakes with long developing his- tort'. T hick dark-colored mudstoaes(or shales)rich in organic matter were deposited in deep w ater area and formed good source rocks. Various porous rocks neighbouring to them could form oil-gas reserviors, is which sandbodies is lake basics were most advantageaeous to the oil-gas accumulation as found so far in China.
1986, 4(4): 41-51.
Abstract:
North-China Platf orm is one of the largest platforms in Chinas to the west, it goes beyond Helaashan M ountains； to the south,tains, Qinling Mountains, east, it reaches to the Bohai F uniushaa M ouatains it stretches to and Dabieshan Qilianshan Mountains Moun-to the Sea and the East China Seas farther than Yinshan M ouataias.In Early Ordovician, it sate platform. to the north, it extends was a very broad carbo nate platform.
North-China Platf orm is one of the largest platforms in Chinas to the west, it goes beyond Helaashan M ountains； to the south,tains, Qinling Mountains, east, it reaches to the Bohai F uniushaa M ouatains it stretches to and Dabieshan Qilianshan Mountains Moun-to the Sea and the East China Seas farther than Yinshan M ouataias.In Early Ordovician, it sate platform. to the north, it extends was a very broad carbo nate platform.
1986, 4(4): 65-72.
Abstract:
Ia the past, marine shallow seismic profiles are marialy applied or interpretatiag sea bottom lithology, aow due to the enlargemeat of high resolution of seismic shal- low profiles and vertical proportion of time scale, profiles can be used for determin- ing the seismic sequence and interpretiag shallow strata and depositioaal facies.
Ia the past, marine shallow seismic profiles are marialy applied or interpretatiag sea bottom lithology, aow due to the enlargemeat of high resolution of seismic shal- low profiles and vertical proportion of time scale, profiles can be used for determin- ing the seismic sequence and interpretiag shallow strata and depositioaal facies.
1986, 4(4): 87-99.
Abstract:
Erhai is an outpouring freshwater lake of inland fauled type in Yunnan-Guizhou plateau of China, It is 42. 6km long from South to North, and the maximum width is 8.2km. The area is about 250kmz.The maximum depth is 20.7m, Erhai region be- longs to warm climate zone. The lake water is of middle trophic type. It is one of ideal lakes for researching organic geochemistry about recent sediment. Using analyti- cal technique in gas-chromatography, liquid-chromatography, GC/MS and ultraviolet spectrums, etc, Some characteristics in organic geochemistry of the.recent sediment from Erhai have dean obtained as folPowss
Erhai is an outpouring freshwater lake of inland fauled type in Yunnan-Guizhou plateau of China, It is 42. 6km long from South to North, and the maximum width is 8.2km. The area is about 250kmz.The maximum depth is 20.7m, Erhai region be- longs to warm climate zone. The lake water is of middle trophic type. It is one of ideal lakes for researching organic geochemistry about recent sediment. Using analyti- cal technique in gas-chromatography, liquid-chromatography, GC/MS and ultraviolet spectrums, etc, Some characteristics in organic geochemistry of the.recent sediment from Erhai have dean obtained as folPowss
1986, 4(4): 109-118.
Abstract:
Along the south bank of the Yangtze river, between the Yuanshi bend and Shashi bend, there is a point bar which is named the Tai-Ping-Kou Downstream the Po-int Bar. Adjacent to it at the downstream, there is a channel bar(the Bar or Sanbatan), which is 7km in length and has an area of 7.5sq.km,Three-Eight with a nar-row fore and a wide tail, it appeares to be a planimetric form of wedge. A dinal ridge ranges all the way at both the fore and the tail.across the bar and there are some transversal longitu-furrows According to the 200m by 300m network, we have takes I05 samples on the surface of the bar sad dug 18 flutes(in depth of 1-2m).158 samples were used for the 19 for trace elements, 110 grain-size analysis, 6 for the clay mineral determination, for heavy minerals and 18 for the organic carbon dating.
Along the south bank of the Yangtze river, between the Yuanshi bend and Shashi bend, there is a point bar which is named the Tai-Ping-Kou Downstream the Po-int Bar. Adjacent to it at the downstream, there is a channel bar(the Bar or Sanbatan), which is 7km in length and has an area of 7.5sq.km,Three-Eight with a nar-row fore and a wide tail, it appeares to be a planimetric form of wedge. A dinal ridge ranges all the way at both the fore and the tail.across the bar and there are some transversal longitu-furrows According to the 200m by 300m network, we have takes I05 samples on the surface of the bar sad dug 18 flutes(in depth of 1-2m).158 samples were used for the 19 for trace elements, 110 grain-size analysis, 6 for the clay mineral determination, for heavy minerals and 18 for the organic carbon dating.
1986, 4(4): 28-40.
Abstract:
The paper shows that obvious change takes place in north-south Ordovician depo- sits is North Chias Platform.Its south part rose during Yeli Age, and sea water wi- thdrew from north to south.The sediments of Yehli Formation is not Iound is a zone betweea Mouat Song and Yu Couaty but occurs is Fengfeng. Further towards north, they are well developed.Therefore, from Fengfeng to West Beijing forms a slope with its gradient of 1，5000, its south is high,north low.Dolomite facies dec- reases from south to north till vanish, whereas micrite increases from south to north. Organic fossil is from nothing to appearance and again from abundance to decrease from Mount Song to West Beijing
The paper shows that obvious change takes place in north-south Ordovician depo- sits is North Chias Platform.Its south part rose during Yeli Age, and sea water wi- thdrew from north to south.The sediments of Yehli Formation is not Iound is a zone betweea Mouat Song and Yu Couaty but occurs is Fengfeng. Further towards north, they are well developed.Therefore, from Fengfeng to West Beijing forms a slope with its gradient of 1，5000, its south is high,north low.Dolomite facies dec- reases from south to north till vanish, whereas micrite increases from south to north. Organic fossil is from nothing to appearance and again from abundance to decrease from Mount Song to West Beijing
1986, 4(4): 53-63.
Abstract:
The Permian organic reef in Southwest Guizhou Province began to be formed in the middle-late Maokou age of Early Permian and continuously developed until Late Permian.The organic reef may be considered as a kind of margin-plat form reef.The reef-building zoolites were chiefly Spongia and Hydrozoa, secondly Tabulate and Bryozoa. However, Cyanophyta which played an important part in the process of reef-building took shape of’ cohesion and encrustation in appearance. There were also some commensaliam in the reef，such as Crinoidea, Brachyopoda, Foraminfera, Fusulinids, Gastriopoda,Chlorophyta and so on.They correspondingly formed frame- building rocks, frame building obstructed rocks, obstructed Fucks, cohesive rocks and bioclastic limestone,
The Permian organic reef in Southwest Guizhou Province began to be formed in the middle-late Maokou age of Early Permian and continuously developed until Late Permian.The organic reef may be considered as a kind of margin-plat form reef.The reef-building zoolites were chiefly Spongia and Hydrozoa, secondly Tabulate and Bryozoa. However, Cyanophyta which played an important part in the process of reef-building took shape of’ cohesion and encrustation in appearance. There were also some commensaliam in the reef，such as Crinoidea, Brachyopoda, Foraminfera, Fusulinids, Gastriopoda,Chlorophyta and so on.They correspondingly formed frame- building rocks, frame building obstructed rocks, obstructed Fucks, cohesive rocks and bioclastic limestone,
1986, 4(4): 73-86.
Abstract:
A series of constructjon pits along the Iower Rhine-Mass rivers revealed the subre- cent deposits in different subenviroaments from tidal dominated systems to fluvial do- miaated systems, This makes it possible to study the properties of these sediments. The sedimentary structures of these deposits are examined and compared by sampling a series of lacquer peels.
A series of constructjon pits along the Iower Rhine-Mass rivers revealed the subre- cent deposits in different subenviroaments from tidal dominated systems to fluvial do- miaated systems, This makes it possible to study the properties of these sediments. The sedimentary structures of these deposits are examined and compared by sampling a series of lacquer peels.
1986, 4(4): 101-108.
Abstract:
This paper deals with the micropaleobotanic florae of the Lower Tertiary depres- sion in Shulu, Hebei province, accompanying the study of the Tertiary stratigraphy sedimentary facies and prospective oil reserves of the study area. The major effort has been made to reveal that the micropaIeobotanic florae are characterized by the prodominance of primitive Angiospermophyta, over-abundant jute pollen, algae sad Acritarch. The author has put forward her own views whereby the profiles of the depression may be divided into four stages-Shahejie Third Section Shahe- jie Second Section, Shahejie First Section and Dongying Formation. The author has also discussed the paleogeographic environments, paleobotanic landscape.
This paper deals with the micropaleobotanic florae of the Lower Tertiary depres- sion in Shulu, Hebei province, accompanying the study of the Tertiary stratigraphy sedimentary facies and prospective oil reserves of the study area. The major effort has been made to reveal that the micropaIeobotanic florae are characterized by the prodominance of primitive Angiospermophyta, over-abundant jute pollen, algae sad Acritarch. The author has put forward her own views whereby the profiles of the depression may be divided into four stages-Shahejie Third Section Shahe- jie Second Section, Shahejie First Section and Dongying Formation. The author has also discussed the paleogeographic environments, paleobotanic landscape.
1986, 4(4): 119-127.
Abstract:
Based ox the diageaetic experiment of the modern carbonate sand sampled from Xisha Archipelago, this paper studis is detail the diageaetic changes of the tea- ture, construction and mineral composition of carbonate is higher temperature and higher pressure. The results of the experiment show that the sand grains of carbo- ante are micritized is three ways during the diageaetic process:(1) fractured micri- tizatioa, under higher pressure coarse carbonate grains are fractured into fine micri- tic grains with closely mosaic texture.
Based ox the diageaetic experiment of the modern carbonate sand sampled from Xisha Archipelago, this paper studis is detail the diageaetic changes of the tea- ture, construction and mineral composition of carbonate is higher temperature and higher pressure. The results of the experiment show that the sand grains of carbo- ante are micritized is three ways during the diageaetic process:(1) fractured micri- tizatioa, under higher pressure coarse carbonate grains are fractured into fine micri- tic grains with closely mosaic texture.
