2003 Vol. 28, No. 2
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2003, 28(2): 111-120.
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Abstract:
Detailed study of the structures in the Dabie-Sulu UHP metamorphic belt, east-central China indicates that most of Triassic UHP rocks were reworked and reset under eclogite- and amphibolite-facies conditions, following the peak UHP metamorphism. Howe...
Detailed study of the structures in the Dabie-Sulu UHP metamorphic belt, east-central China indicates that most of Triassic UHP rocks were reworked and reset under eclogite- and amphibolite-facies conditions, following the peak UHP metamorphism. Howe...
2003, 28(2): 121-128.
Abstract:
Partial melting of subducted oceanic crust is one of the most important processes of continental growth. However, we see little direct evidence of partial melting of the continental during subduction. The difference in trace elements and Pb isotope b...
Partial melting of subducted oceanic crust is one of the most important processes of continental growth. However, we see little direct evidence of partial melting of the continental during subduction. The difference in trace elements and Pb isotope b...
2003, 28(2): 129-136.
Abstract:
UHP eclogite samples were collected from surface exposures around Chinese Continental Scientific Drilling (CCSD) drill-site in Donghai area have been measured on thermal conductivity to investigate the effect of mineral components and texture on ther...
UHP eclogite samples were collected from surface exposures around Chinese Continental Scientific Drilling (CCSD) drill-site in Donghai area have been measured on thermal conductivity to investigate the effect of mineral components and texture on ther...
2003, 28(2): 137-142.
Abstract:
Pb isotopes have been comprehensively applied to isotopic geochronology, geochemical tracing and division of tectonic zones. Due to the difficulty for calibration of Pb isotopic fractionation in thermal ionization mass spectrometry (TIMS) analysis, t...
Pb isotopes have been comprehensively applied to isotopic geochronology, geochemical tracing and division of tectonic zones. Due to the difficulty for calibration of Pb isotopic fractionation in thermal ionization mass spectrometry (TIMS) analysis, t...
2003, 28(2): 143-150.
Abstract:
The studies on ultra-microstructure characteristic of quartz exsolution in eclogite and coesite in UHP eclogite of several localities are done with the appliance of laser Raman spectroscopy and U-stage. Research results show that the phase transforma...
The studies on ultra-microstructure characteristic of quartz exsolution in eclogite and coesite in UHP eclogite of several localities are done with the appliance of laser Raman spectroscopy and U-stage. Research results show that the phase transforma...
2003, 28(2): 151-156.
Abstract:
This study indicates that to obtain the accurate contents of Zr and Hf in the high-grade metamorphic rocks (e.g., gneiss, granulite and eclogite) with ICP-MS, the rock-digesting time must be > 36 h at 190 ℃ in closed Teflon Bomb. Unlike Zr and Hf,...
This study indicates that to obtain the accurate contents of Zr and Hf in the high-grade metamorphic rocks (e.g., gneiss, granulite and eclogite) with ICP-MS, the rock-digesting time must be > 36 h at 190 ℃ in closed Teflon Bomb. Unlike Zr and Hf,...
2003, 28(2): 157-162.
Abstract:
Physical property of deep-sea sediment core is useful to make an efficient calculation of the percent carbonate, which has been successful in low resolution research rather than in high resolution research. Multiple regression equations are generated...
Physical property of deep-sea sediment core is useful to make an efficient calculation of the percent carbonate, which has been successful in low resolution research rather than in high resolution research. Multiple regression equations are generated...
2003, 28(2): 163-166.
Abstract:
Carbonate pillared Mg-Al-In hydrotalcites were synthesized by coprecipitation. Various preparative factors such as precipitation method, operation temperature, pH value, aging time and n (Mg): n (Al): n (In) molar ratio, which affect the purity and c...
Carbonate pillared Mg-Al-In hydrotalcites were synthesized by coprecipitation. Various preparative factors such as precipitation method, operation temperature, pH value, aging time and n (Mg): n (Al): n (In) molar ratio, which affect the purity and c...
2003, 28(2): 167-172.
Abstract:
Bikou Group, a metamorphic terrene with a series of slabs, and formed in the mid-late Proterozoic era, has undergone multi-periods of complex metamorphisms and deformation. The composition of its major and trace elements of volcanic rocks shows there...
Bikou Group, a metamorphic terrene with a series of slabs, and formed in the mid-late Proterozoic era, has undergone multi-periods of complex metamorphisms and deformation. The composition of its major and trace elements of volcanic rocks shows there...
2003, 28(2): 173-178.
Abstract:
Petrology and mineralogy of spinel-clinopyroxenite xenolith in Early Jurassic intrusive complex from Xu-Huai region, central China indicate that Mg-Fe spinel and Al-clinopyroxene assemblage could be present as the cumulate of the underplating magma i...
Petrology and mineralogy of spinel-clinopyroxenite xenolith in Early Jurassic intrusive complex from Xu-Huai region, central China indicate that Mg-Fe spinel and Al-clinopyroxene assemblage could be present as the cumulate of the underplating magma i...
2003, 28(2): 179-184.
Abstract:
Tectonic stress can cause the deformation of rocks as well as the change of fluid pressure in the pore of rocks forming anomaly tectonic fluid pressure. Through analysis of the lithomechanical experiment results of Paterson etc, the authors find that...
Tectonic stress can cause the deformation of rocks as well as the change of fluid pressure in the pore of rocks forming anomaly tectonic fluid pressure. Through analysis of the lithomechanical experiment results of Paterson etc, the authors find that...
2003, 28(2): 185-190.
Abstract:
On the basis of the geological study of hydrocarbon migrating and accumulating into reservoir in Guantao Fm., Zhanhua depression, this experiment models the influence of opening fault on petroleum migration and accumulation in the formation with a 2-...
On the basis of the geological study of hydrocarbon migrating and accumulating into reservoir in Guantao Fm., Zhanhua depression, this experiment models the influence of opening fault on petroleum migration and accumulation in the formation with a 2-...
2003, 28(2): 191-195.
Abstract:
On the basis of lineament interpretation of DEM, TM, NOAA and ground magnetics, this study suggests that lineaments spatially coupled with gold deposits distribution. At regional scale, the first-order structural controls are NEE, NE and NW trending ...
On the basis of lineament interpretation of DEM, TM, NOAA and ground magnetics, this study suggests that lineaments spatially coupled with gold deposits distribution. At regional scale, the first-order structural controls are NEE, NE and NW trending ...
2003, 28(2): 196-200.
Abstract:
Based on capillary pressure theory, the accumulation and distribution of hydrocarbon in inhomogeneous sandstone reservoir with complicated pore structures were analyzed. It was concluded that the accumulation and distribution of hydrocarbon in inhomo...
Based on capillary pressure theory, the accumulation and distribution of hydrocarbon in inhomogeneous sandstone reservoir with complicated pore structures were analyzed. It was concluded that the accumulation and distribution of hydrocarbon in inhomo...
2003, 28(2): 201-208.
Abstract:
One of the most important ore fields in Qinling multi-metallic ore-forming belt is Xicheng Pb-Zn deposit which is controlled strictly in the Middle Devonian series. Viewing from organic geochemistry, the correlation between ore-forming elements and o...
One of the most important ore fields in Qinling multi-metallic ore-forming belt is Xicheng Pb-Zn deposit which is controlled strictly in the Middle Devonian series. Viewing from organic geochemistry, the correlation between ore-forming elements and o...
2003, 28(2): 209-213.
Abstract:
Based on a previous research, two typical high-As coal samples were conducted on subsequent leaching. Combining with instrument neutron active analyses (INAA), ICP-MS, ICP-AES, X-ray absorption fine structure (XAFS), low temperature ashing, and scann...
Based on a previous research, two typical high-As coal samples were conducted on subsequent leaching. Combining with instrument neutron active analyses (INAA), ICP-MS, ICP-AES, X-ray absorption fine structure (XAFS), low temperature ashing, and scann...
2003, 28(2): 214-218.
Abstract:
The Dongting Lake has experienced several change processes since last glaciation. From later Pleistocene to early Holocene, the Dongting Lake area was a plain cutting by deep channel. Then the anthropologic has been to the Dongting Lake area frequent...
The Dongting Lake has experienced several change processes since last glaciation. From later Pleistocene to early Holocene, the Dongting Lake area was a plain cutting by deep channel. Then the anthropologic has been to the Dongting Lake area frequent...
2003, 28(2): 219-224.
Abstract:
During the last 40 years, nitrate has become one of the most common groundwater contaminants. In this paper, the nitrogen isotope rations in NO3- have been analyzed by a new sealed-tube combustion technique using CaO for quantitative removal of CO2 a...
During the last 40 years, nitrate has become one of the most common groundwater contaminants. In this paper, the nitrogen isotope rations in NO3- have been analyzed by a new sealed-tube combustion technique using CaO for quantitative removal of CO2 a...
2003, 28(2): 225-231.
Abstract:
One of the main tasks in studying saltwater intrusion into coastal aquifer system is to determine the position of the saltwater-freshwater interface. For a natural confined aquifer, this position is related to the roof length of the aquifer extending...
One of the main tasks in studying saltwater intrusion into coastal aquifer system is to determine the position of the saltwater-freshwater interface. For a natural confined aquifer, this position is related to the roof length of the aquifer extending...
