1984 Vol. 2, No. 3
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Display Method:
1984, 2(3): 1-17.
Abstract:
It has recently- become possible to accurately determine the structures and reatiwe amounts of organic compounds of biological significance through the use of computerized Gas Chromatography-Alass Spectrometry(GC/MS).These compounds derive from primal organisms and still retain the basic caron skeleton throughout the process of diagenesis and subsequent formation of oil and gas.Because of the study the source and evolution of petroleum.
It has recently- become possible to accurately determine the structures and reatiwe amounts of organic compounds of biological significance through the use of computerized Gas Chromatography-Alass Spectrometry(GC/MS).These compounds derive from primal organisms and still retain the basic caron skeleton throughout the process of diagenesis and subsequent formation of oil and gas.Because of the study the source and evolution of petroleum.
GEOLOGIC CHARACTERISTICS AND GENESIS OF HUGE STRATA-BOUND LEAD-ZINC ORE DEPOSIT OF FANKOU, GUANGDONG
1984, 2(3): 34-47.
Abstract:
The huge lead and zinc deposit of Fankou, Guangdong is a strata-bound ore deposit located in carbonate rocks of Middle -Upper Devonian series. The orebody chiefly appears in the transition zone between the carbonate rock and the fragme-ntal rock, and also in the carbonate rock. The orebody is controlled by faults.The ore-bearing rocks mostly are micrites with a great deal of algaes and contain a good few of terrigenous clastic and carbonaceous sediments. The dolomitization of the ore-bearing rocks is not intense. There are, however, residues of wall rocks in the orebody which is bordered by joints on the surrounding rock.
The huge lead and zinc deposit of Fankou, Guangdong is a strata-bound ore deposit located in carbonate rocks of Middle -Upper Devonian series. The orebody chiefly appears in the transition zone between the carbonate rock and the fragme-ntal rock, and also in the carbonate rock. The orebody is controlled by faults.The ore-bearing rocks mostly are micrites with a great deal of algaes and contain a good few of terrigenous clastic and carbonaceous sediments. The dolomitization of the ore-bearing rocks is not intense. There are, however, residues of wall rocks in the orebody which is bordered by joints on the surrounding rock.
1984, 2(3): 60-74.
Abstract:
The sedimentary rock area of the Early Permian system makes up about 81% of the total area of China, in which sedimentary rocks of sea facies account about 80%, To the south of 40°N, carbonates predominate with rich biota of sea facies as well as bioherm; while to the north of 40°N are the detrital rocks. The area of land facies accounts for 20% and it is chiefly distributed in the ancient land of China.
The sedimentary rock area of the Early Permian system makes up about 81% of the total area of China, in which sedimentary rocks of sea facies account about 80%, To the south of 40°N, carbonates predominate with rich biota of sea facies as well as bioherm; while to the north of 40°N are the detrital rocks. The area of land facies accounts for 20% and it is chiefly distributed in the ancient land of China.
1984, 2(3): 82-90.
Abstract:
To calculate the distance between an ancient river mouth and the area where the deltaic sandbody enters into an ancient lake, the dynamic calculative method can obtain quantitative or semi-quantitative results compared with sedimentary fa-cies analyses. Sometimes, it is easier to get the required information without complex treatment as compared with seismic stratigraphic analyses. So the dynamic calculative method cannot be replaced by other.
To calculate the distance between an ancient river mouth and the area where the deltaic sandbody enters into an ancient lake, the dynamic calculative method can obtain quantitative or semi-quantitative results compared with sedimentary fa-cies analyses. Sometimes, it is easier to get the required information without complex treatment as compared with seismic stratigraphic analyses. So the dynamic calculative method cannot be replaced by other.
1984, 2(3): 101-107.
Abstract:
In the study of the so-called "Suzhou clay" of the filling karst cavern in Yang-shan kaolin deposit, some new evidences have been found.
In the study of the so-called "Suzhou clay" of the filling karst cavern in Yang-shan kaolin deposit, some new evidences have been found.
1984, 2(3): 118-123.
Abstract:
After the analysis of the specific gravity of the modern sediments of the Hutuo River, the authors hold that specific gravity of sediments in channel facies,channel bar facies and point bar facies Inereases with the decrease of grain size along the river. As for the sediments in the natural levee facies, the specific gravity becomes smaller with the decrease of grain size from up-stream to down-stream. The specific gravity becomes smaller gradually with the decrease of grain size from the central part of the river to the banks in the cross section of the river along which the channel facies, channel bar facies, point bar facies and natural levee facies are well arranged in order. In the vertical section, just as described in this paper, the specific gravity of modern sediments varies in different sub-facies.
After the analysis of the specific gravity of the modern sediments of the Hutuo River, the authors hold that specific gravity of sediments in channel facies,channel bar facies and point bar facies Inereases with the decrease of grain size along the river. As for the sediments in the natural levee facies, the specific gravity becomes smaller with the decrease of grain size from up-stream to down-stream. The specific gravity becomes smaller gradually with the decrease of grain size from the central part of the river to the banks in the cross section of the river along which the channel facies, channel bar facies, point bar facies and natural levee facies are well arranged in order. In the vertical section, just as described in this paper, the specific gravity of modern sediments varies in different sub-facies.
1984, 2(3): 18-33.
Abstract:
This paper deals with the classification of kerogen types, probes into the effectiveness and limitation of indexes obtained by Rock-Eval analysis, coal-petrolo-gical composition, maceral examination, electron microscope scanning, thermal analysis ( Pyrolysis ), element composition, infrared spectrum and carbon isotopic composition of kerogen for differentiating kerogen types, and approaches the correlation of index boundaries.
This paper deals with the classification of kerogen types, probes into the effectiveness and limitation of indexes obtained by Rock-Eval analysis, coal-petrolo-gical composition, maceral examination, electron microscope scanning, thermal analysis ( Pyrolysis ), element composition, infrared spectrum and carbon isotopic composition of kerogen for differentiating kerogen types, and approaches the correlation of index boundaries.
1984, 2(3): 48-59.
Abstract:
Fiuqa Basin, a R4esozoic and Cainozoic basin,is situated in the northern margin of the Tarim Basin and south of the Tianshan Mountians. There were only terrigenous detrital rock assemblage in the Triassic, Jurassic and Cretaceous beds, The Early Tertiary ingression to Kuqa Basin too(c place in the Tethys and brought marine fossils(Modiolus elegans, Podamides sp. Corbula sp. Podamidae, etc.)into the T ertiary carbonatitec deposits. So we call the carbonatites terrestrial- marine transitional carbonatites.
Fiuqa Basin, a R4esozoic and Cainozoic basin,is situated in the northern margin of the Tarim Basin and south of the Tianshan Mountians. There were only terrigenous detrital rock assemblage in the Triassic, Jurassic and Cretaceous beds, The Early Tertiary ingression to Kuqa Basin too(c place in the Tethys and brought marine fossils(Modiolus elegans, Podamides sp. Corbula sp. Podamidae, etc.)into the T ertiary carbonatitec deposits. So we call the carbonatites terrestrial- marine transitional carbonatites.
1984, 2(3): 75-81.
Abstract:
The research has shoiw that liakajia-V'angatan area w as a deep一water basin situated on the continantal in Earlv Permian.Hemipelagic deposits, turbidites and coarse clastic slump deposits were developed in this region.
The research has shoiw that liakajia-V'angatan area w as a deep一water basin situated on the continantal in Earlv Permian.Hemipelagic deposits, turbidites and coarse clastic slump deposits were developed in this region.
1984, 2(3): 91-100.
Abstract:
This paper deals with 118 samples of limemicrite from various sedimentary environments of littoral shallow zone at different times,and some knowledge has been obtained as follows.
This paper deals with 118 samples of limemicrite from various sedimentary environments of littoral shallow zone at different times,and some knowledge has been obtained as follows.
1984, 2(3): 108-117.
Abstract:
This paper deals with the visual observation of sporo-pollen color and organic matter types of the 4 wells of the Biyang aad Zaoyang depressions (a total of 57 samples). All of the samples were treated with hydrochloric and hydrofluoric acids to remove carbonates and silicates, then the organic materials contained in them were concentrated by means of heavy liquid ( CdI2 ). Sporo-pollen fossils and other organic matters were observed under transmission microscope. Based on the variations of sporo-pollen color, three organic maturation facies may be distinguished: ( i ) the light yellow and yellow are immature, ( ii ) the yellowish-brown and brown indicate mature to highly mature, and ( iii ) the dark brownish-black and black are metamorphosed. Dry gas and possibly heavy oil could be generated in the immature facies; oil, condensate and wet gas could be found in the mature to highly mature facies; only dry gas could be produced in the metamorphosed facies. Three main types of organic matters in sedimentary rocks can be determined under transmission micros-cope, e.g. sapropel type,humus type and transitional type. In the mature to highly mature facies, the sapropel type and transitional type produce oil, condensate and wet gas,
This paper deals with the visual observation of sporo-pollen color and organic matter types of the 4 wells of the Biyang aad Zaoyang depressions (a total of 57 samples). All of the samples were treated with hydrochloric and hydrofluoric acids to remove carbonates and silicates, then the organic materials contained in them were concentrated by means of heavy liquid ( CdI2 ). Sporo-pollen fossils and other organic matters were observed under transmission microscope. Based on the variations of sporo-pollen color, three organic maturation facies may be distinguished: ( i ) the light yellow and yellow are immature, ( ii ) the yellowish-brown and brown indicate mature to highly mature, and ( iii ) the dark brownish-black and black are metamorphosed. Dry gas and possibly heavy oil could be generated in the immature facies; oil, condensate and wet gas could be found in the mature to highly mature facies; only dry gas could be produced in the metamorphosed facies. Three main types of organic matters in sedimentary rocks can be determined under transmission micros-cope, e.g. sapropel type,humus type and transitional type. In the mature to highly mature facies, the sapropel type and transitional type produce oil, condensate and wet gas,
1984, 2(3): 124-130.
Abstract:
Huanghua Basin, an important oil-bearing basin in eastern China, is one of the Mesozoic and Cenozoic fault-subsidence basins.
Huanghua Basin, an important oil-bearing basin in eastern China, is one of the Mesozoic and Cenozoic fault-subsidence basins.
