2010 Vol. 35, No. 4
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2010, 35(4): 507-511.
doi: 10.3799/dqkx.2010.065
PDF 564KB
Abstract:
A thalattosaur forelimb specimen described here, was collected from the second member of Guanling Formation (the Middle Triassic Anisian Pelsonian) of Xinzai village, Luoping County, Yunnan Province. It is not only the first appearance of Thalattosau...
A thalattosaur forelimb specimen described here, was collected from the second member of Guanling Formation (the Middle Triassic Anisian Pelsonian) of Xinzai village, Luoping County, Yunnan Province. It is not only the first appearance of Thalattosau...
2010, 35(4): 512-514.
doi: 10.3799/dqkx.2010.066
Abstract:
Abundant conodont clusters were found after careful sampling, processing and analysis of the specimens in the Daaozi section of the second member of Guanling Formation yielding Luoping Fauna at the centimeter level. And a complete conodont multieleme...
Abundant conodont clusters were found after careful sampling, processing and analysis of the specimens in the Daaozi section of the second member of Guanling Formation yielding Luoping Fauna at the centimeter level. And a complete conodont multieleme...
2010, 35(4): 515-525.
doi: 10.3799/dqkx.2010.067
Abstract:
Oxygen and carbon stable isotope records (with an average time resolution of 228 a) were obtained from Core MD05-2904 (19°27.32', 116°15.15', water depth 2 066 m), using the mixed-layer dwelling planktonic foraminifer Globigerinoides ruber (white). T...
Oxygen and carbon stable isotope records (with an average time resolution of 228 a) were obtained from Core MD05-2904 (19°27.32', 116°15.15', water depth 2 066 m), using the mixed-layer dwelling planktonic foraminifer Globigerinoides ruber (white). T...
2010, 35(4): 526-532.
doi: 10.3799/dqkx.2010.068
Abstract:
High-resolution carbon and oxygen isotope analysis for cores NS93-5 and NS97-37 from southern South China Sea (SCS) shows the rapid negative excursion of carbon isotope in the last deglaciation (about 18 ka) and the penultimate deglaciation (about 13...
High-resolution carbon and oxygen isotope analysis for cores NS93-5 and NS97-37 from southern South China Sea (SCS) shows the rapid negative excursion of carbon isotope in the last deglaciation (about 18 ka) and the penultimate deglaciation (about 13...
2010, 35(4): 533-541.
doi: 10.3799/dqkx.2010.069
Abstract:
The magnetic susceptibility of loess as a proxy for the intensity of summer monsoon has be used to investigate the periodicity of paleoclimatic changes of aeolian deposits in China.However, previous studies focused most on the southeast monsoon areas...
The magnetic susceptibility of loess as a proxy for the intensity of summer monsoon has be used to investigate the periodicity of paleoclimatic changes of aeolian deposits in China.However, previous studies focused most on the southeast monsoon areas...
2010, 35(4): 542-550.
doi: 10.3799/dqkx.2010.070
Abstract:
The evolution of the shore-normal profile shape of an accretional tidal flat is controlled by the transport of muddy and sandy sediments by tidal currents. To understand the evolution processes, a model is established to simulate the tidal flat profi...
The evolution of the shore-normal profile shape of an accretional tidal flat is controlled by the transport of muddy and sandy sediments by tidal currents. To understand the evolution processes, a model is established to simulate the tidal flat profi...
2010, 35(4): 551-562.
doi: 10.3799/dqkx.2010.071
Abstract:
WPD-03 is a sediment core with the Ethmodiscus rex diatom mats recently reported from the low-latitude western Pacific Ocean. Clay mineral assemblages, opal and organic material contents in sediments from Core WPD-03 were measured to trace the format...
WPD-03 is a sediment core with the Ethmodiscus rex diatom mats recently reported from the low-latitude western Pacific Ocean. Clay mineral assemblages, opal and organic material contents in sediments from Core WPD-03 were measured to trace the format...
2010, 35(4): 563-571.
doi: 10.3799/dqkx.2010.072
Abstract:
Rare earth elements (REE) in the fine-grained fraction of surface sediments were detected by ICP-MS analysis, to study distribution characters of REE and the influencing factors in the South China Sea. Results reveal that distribution of REE in sedim...
Rare earth elements (REE) in the fine-grained fraction of surface sediments were detected by ICP-MS analysis, to study distribution characters of REE and the influencing factors in the South China Sea. Results reveal that distribution of REE in sedim...
2010, 35(4): 572-584.
doi: 10.3799/dqkx.2010.073
Abstract:
This paper aims to constrain the starting time of Early Cretaceous large-scale extensional and mantle properties in Dabie orogen. The SHRIMP zircon U-Pb dating results reveal the Yinshafan gabbro dyke from Jinzhai, North Huaiyang region is 125.8±2.7 ...
This paper aims to constrain the starting time of Early Cretaceous large-scale extensional and mantle properties in Dabie orogen. The SHRIMP zircon U-Pb dating results reveal the Yinshafan gabbro dyke from Jinzhai, North Huaiyang region is 125.8±2.7 ...
2010, 35(4): 585-596.
doi: 10.3799/dqkx.2010.074
Abstract:
The Huaixi copper-gold deposit, located in depression area between the Zhenghe-Dapu and Changle-Nan'ao deep faults in southeastern Zhejiang Province, is a typical hydrothermal vein filling-metasomatic Cu-Au polymetallic deposit. The Caomen K-feldspar...
The Huaixi copper-gold deposit, located in depression area between the Zhenghe-Dapu and Changle-Nan'ao deep faults in southeastern Zhejiang Province, is a typical hydrothermal vein filling-metasomatic Cu-Au polymetallic deposit. The Caomen K-feldspar...
2010, 35(4): 597-610.
doi: 10.3799/dqkx.2010.075
Abstract:
LA-ICP-MS zircon U-Pb dating of the Kubusunan granodiorite and its enclaves in the Kalamaili area of the eastern Junggar indicates that the isotopic age of the granodiorite is 287±2 Ma (MSWD=0.15), and that of its enclaves is 286±3 Ma (MSWD=0.22). Th...
LA-ICP-MS zircon U-Pb dating of the Kubusunan granodiorite and its enclaves in the Kalamaili area of the eastern Junggar indicates that the isotopic age of the granodiorite is 287±2 Ma (MSWD=0.15), and that of its enclaves is 286±3 Ma (MSWD=0.22). Th...
2010, 35(4): 611-620.
doi: 10.3799/dqkx.2010.076
Abstract:
Neoproterozoic magmatic rocks are widespread in western margin of the Yangtze block, and their genesis and tectonic setting have been an issue in hot debate at the present time. SHRIMP U-Pb zircon age, petrology, geochemical and Nd isotopic data are ...
Neoproterozoic magmatic rocks are widespread in western margin of the Yangtze block, and their genesis and tectonic setting have been an issue in hot debate at the present time. SHRIMP U-Pb zircon age, petrology, geochemical and Nd isotopic data are ...
2010, 35(4): 621-636.
doi: 10.3799/dqkx.2010.077
Abstract:
The Shagou Ag-Pb-Zn vein-type deposit, located in the Luoning county of Henan Province, is hosted in amphibolite facies metamorphic rocks of the Archean Taihua Group and consists of four stages of mineralization: the quartz-siderite stage (Ⅰ), the qu...
The Shagou Ag-Pb-Zn vein-type deposit, located in the Luoning county of Henan Province, is hosted in amphibolite facies metamorphic rocks of the Archean Taihua Group and consists of four stages of mineralization: the quartz-siderite stage (Ⅰ), the qu...
2010, 35(4): 637-644.
doi: 10.3799/dqkx.2010.078
Abstract:
The Mid-West Pacific region is featured with the oldest oceanic crust, the most complicated magnetic anomaly lineation, the densest seamounts, the most peculiar geological feature and the strongest tectonic activity. To research tectonic genesis of t...
The Mid-West Pacific region is featured with the oldest oceanic crust, the most complicated magnetic anomaly lineation, the densest seamounts, the most peculiar geological feature and the strongest tectonic activity. To research tectonic genesis of t...
2010, 35(4): 645-656.
doi: 10.3799/dqkx.2010.079
Abstract:
Study of geothermal regime of sedimentary basin is not only vital for understanding the formation and evolution of the basin, but also is of significance for oil and gas generation and preservation in the basin. Temperature data from about 120 explor...
Study of geothermal regime of sedimentary basin is not only vital for understanding the formation and evolution of the basin, but also is of significance for oil and gas generation and preservation in the basin. Temperature data from about 120 explor...
2010, 35(4): 657-662.
doi: 10.3799/dqkx.2010.080
Abstract:
Based on the fluorescence property of petroleum, conventional fluorescence spectroscopy was employed to quantify the fluorescence spectra of petroleum inclusions. According to the characteristics of the main peak wavelength (λmax), the maximum fluore...
Based on the fluorescence property of petroleum, conventional fluorescence spectroscopy was employed to quantify the fluorescence spectra of petroleum inclusions. According to the characteristics of the main peak wavelength (λmax), the maximum fluore...
2010, 35(4): 663-673.
doi: 10.3799/dqkx.2010.081
Abstract:
The origin and accumulation mechanism of the marine oils in the Tarim basin has long been a disputed issue. Compound specific isotope, fluid inclusion technique and age-indicating biomarkers have been used in investigating hydrocarbons generation and...
The origin and accumulation mechanism of the marine oils in the Tarim basin has long been a disputed issue. Compound specific isotope, fluid inclusion technique and age-indicating biomarkers have been used in investigating hydrocarbons generation and...
2010, 35(4): 674-680.
doi: 10.3799/dqkx.2010.082
Abstract:
Due to the pressure difference between borehole and reservoirs, drilling mud invades the original reserviors while drilling for petroleum, changing the formation resistivity, which has a negative effect on resistivity logging. Based on the theoretica...
Due to the pressure difference between borehole and reservoirs, drilling mud invades the original reserviors while drilling for petroleum, changing the formation resistivity, which has a negative effect on resistivity logging. Based on the theoretica...
2010, (4): 681-690.
doi: 10.3799/dqkx.2010.083
Abstract:
Sedimentary characteristics of Baiyun sag in Oligocene and Miocene play an important role in deep-water oil and gas exploration in South China Sea, among which there is a special three-order "source to sink" relationship between shelf-edge delta and ...
Sedimentary characteristics of Baiyun sag in Oligocene and Miocene play an important role in deep-water oil and gas exploration in South China Sea, among which there is a special three-order "source to sink" relationship between shelf-edge delta and ...
2010, 35(4): 691-696.
doi: 10.3799/dqkx.2010.084
Abstract:
In order to study the effect of lithological background of carbonate rock on spatio-temporal evolution of karst rocky desertification (RD) land, 1∶100 000 scale digital RD distribution maps of Guizhou in 1986, 1995 and 2000 were obtained by RS, GIS a...
In order to study the effect of lithological background of carbonate rock on spatio-temporal evolution of karst rocky desertification (RD) land, 1∶100 000 scale digital RD distribution maps of Guizhou in 1986, 1995 and 2000 were obtained by RS, GIS a...
