2008 Vol. 33, No. 2
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2008, 33(2): 145-150.
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Abstract:
LA-ICP-MS zircon U-Pb dating was carried out for two basement granites from the Yishu graben to compare the tectonic evolutionary history between the Yishu graben and Songliao basin. The results indicate that most of zircons from the basement granite...
LA-ICP-MS zircon U-Pb dating was carried out for two basement granites from the Yishu graben to compare the tectonic evolutionary history between the Yishu graben and Songliao basin. The results indicate that most of zircons from the basement granite...
2008, 33(2): 151-164.
Abstract:
Zircon U-Pb dating by LA-ICPMS reveals that the age of Mesozoic volcanic rocks from the Zhangwu area in west Liaoning Province is 122.4± 0.4 Ma, which belongs to Early Cretaceous. Geochemical compositions of 23 typical volcanic samples are studied. T...
Zircon U-Pb dating by LA-ICPMS reveals that the age of Mesozoic volcanic rocks from the Zhangwu area in west Liaoning Province is 122.4± 0.4 Ma, which belongs to Early Cretaceous. Geochemical compositions of 23 typical volcanic samples are studied. T...
2008, 33(2): 165-173.
Abstract:
South Tianshan is a prominent intracontinental collisional orogenic belt and a key to understand the central Asia tectonic evolution.The serpentinized peridotites from Baleigong ophiolitic mélange was emplaced in the southwestern Kokshal area, which ...
South Tianshan is a prominent intracontinental collisional orogenic belt and a key to understand the central Asia tectonic evolution.The serpentinized peridotites from Baleigong ophiolitic mélange was emplaced in the southwestern Kokshal area, which ...
2008, 33(2): 174-182.
Abstract:
According to the particular investigations on the geometry and kinematics of the Shangma fault, three different crust-levels of extension movements have been differentiated in sequence of development from the deep to the shallow: ① ductile shearing w...
According to the particular investigations on the geometry and kinematics of the Shangma fault, three different crust-levels of extension movements have been differentiated in sequence of development from the deep to the shallow: ① ductile shearing w...
2008, 33(2): 183-189.
Abstract:
The piston core Ph05-5 recovered from the West Philippine Sea (16.049 3°N, 124.344 8°E, water depth 3 382 m) was used to study the δ18O and δ13C variations of calcareous nannofossils.The δ18O values of calcareous nannofossils were obviously lower in ...
The piston core Ph05-5 recovered from the West Philippine Sea (16.049 3°N, 124.344 8°E, water depth 3 382 m) was used to study the δ18O and δ13C variations of calcareous nannofossils.The δ18O values of calcareous nannofossils were obviously lower in ...
2008, 33(2): 190-196.
Abstract:
The environmental proxies of the susceptibility, particle size, and the contents of carbonate and organic carbon in the lacustrine sediments of the CK-2 core from Lop-Nur Lake, Xinjiang, Northwest China are determined in this study.The core section c...
The environmental proxies of the susceptibility, particle size, and the contents of carbonate and organic carbon in the lacustrine sediments of the CK-2 core from Lop-Nur Lake, Xinjiang, Northwest China are determined in this study.The core section c...
2008, 33(2): 197-204.
Abstract:
Based on the analysis of TOC, CaCO3, δ13 Corg, δ18 O, δ13 C of shell bar sediments in the Qaidam basin and the comparison with grain size, the environmental change of the studied section are divided into five stages.From 39.7 to 35.8 ka BP is the per...
Based on the analysis of TOC, CaCO3, δ13 Corg, δ18 O, δ13 C of shell bar sediments in the Qaidam basin and the comparison with grain size, the environmental change of the studied section are divided into five stages.From 39.7 to 35.8 ka BP is the per...
2008, 33(2): 205-209.
Abstract:
In order to discuss the age and the provenance of the Zhijin REE-bearing phosphorites in Guizhou, six small shell fossils and cellophane sampled from the phosphorites are dated by Sm-Nd isotopic dilution method.The results of mass spectrographic anal...
In order to discuss the age and the provenance of the Zhijin REE-bearing phosphorites in Guizhou, six small shell fossils and cellophane sampled from the phosphorites are dated by Sm-Nd isotopic dilution method.The results of mass spectrographic anal...
2008, 33(2): 210-218.
Abstract:
Jinchuantang is an important mining area in operation in the super large W-Sn-Mo-Bi deposit of Shizhuyuan, Hunan Province.The mineral characteristics of the massive skarn of the area are: the garnet is mainly of anorthite; the pyroxene exists as cont...
Jinchuantang is an important mining area in operation in the super large W-Sn-Mo-Bi deposit of Shizhuyuan, Hunan Province.The mineral characteristics of the massive skarn of the area are: the garnet is mainly of anorthite; the pyroxene exists as cont...
2008, 33(2): 219-226.
Abstract:
Exploration of oil and gas in the central part of Junggar basin has shed light on the evolution of the Chepaizi-Mosuowan paleo-uplift, and the study of red beds beneath the unconformity between Jurassic and Cretaceous indicates that the processes of ...
Exploration of oil and gas in the central part of Junggar basin has shed light on the evolution of the Chepaizi-Mosuowan paleo-uplift, and the study of red beds beneath the unconformity between Jurassic and Cretaceous indicates that the processes of ...
2008, 33(2): 227-234.
Abstract:
The characteristics and diagenetic types of Chaluhe reservoir were studied in terms of the data of drill cores, slices, scanning electron microscopy, X-ray diffraction.According to the criterion of division, the diagenetic phases are divided into ear...
The characteristics and diagenetic types of Chaluhe reservoir were studied in terms of the data of drill cores, slices, scanning electron microscopy, X-ray diffraction.According to the criterion of division, the diagenetic phases are divided into ear...
2008, 33(2): 235-242.
Abstract:
In order to research the influence of mantle plume tectonics and plate subduction on the Jiyang depression, the geological characteristics of Jiyang depression and the results of the seismic source of earthquake and plate subduction are analyzed, bas...
In order to research the influence of mantle plume tectonics and plate subduction on the Jiyang depression, the geological characteristics of Jiyang depression and the results of the seismic source of earthquake and plate subduction are analyzed, bas...
2008, 33(2): 243-250.
Abstract:
Precise measurement of Nd isotopic ratio of micro-samples, being one of the most difficult tasks in measurements of isotopic ratios, plays an important role in research fields of earth and environmental sciences.This study reports the results of prec...
Precise measurement of Nd isotopic ratio of micro-samples, being one of the most difficult tasks in measurements of isotopic ratios, plays an important role in research fields of earth and environmental sciences.This study reports the results of prec...
2008, 33(2): 251-258.
Abstract:
Marine Co-riched crusts are important as potential mineral resources for Co, Ni, Pt, Mn, and other metals, as well as for the paleoenvironment signals stored in their stratigraphic layers.The higher Co, Ni and Pt content of crusts relative to abyssal...
Marine Co-riched crusts are important as potential mineral resources for Co, Ni, Pt, Mn, and other metals, as well as for the paleoenvironment signals stored in their stratigraphic layers.The higher Co, Ni and Pt content of crusts relative to abyssal...
2008, 33(2): 259-265.
Abstract:
Synthetic fluid inclusions were studied in order to discuss formational mechanisms of homogeneous fluid and boiling fluid in detail.The results of experiments of fluid inclusion synthesizing show frequent occurrences of homogeneous fluid and boiling ...
Synthetic fluid inclusions were studied in order to discuss formational mechanisms of homogeneous fluid and boiling fluid in detail.The results of experiments of fluid inclusion synthesizing show frequent occurrences of homogeneous fluid and boiling ...
2008, 33(2): 266-272.
Abstract:
Nitrogen-2D is a physically-based model developed on the basis of SWMS-2D to predict the fate of nitrogen and phosphorus following irrigation with effluent.To test the model, a sewage effluent irrigation experiment was conducted.In this paper, the ni...
Nitrogen-2D is a physically-based model developed on the basis of SWMS-2D to predict the fate of nitrogen and phosphorus following irrigation with effluent.To test the model, a sewage effluent irrigation experiment was conducted.In this paper, the ni...
2008, 33(2): 273-278.
Abstract:
With the social and economic development in coastal areas, a variety of hydrogeological problems arise.In order to solve these problems, it is necessary to study hydraulic relation between ground water and seawater.This paper explores the tide-induce...
With the social and economic development in coastal areas, a variety of hydrogeological problems arise.In order to solve these problems, it is necessary to study hydraulic relation between ground water and seawater.This paper explores the tide-induce...
2008, 33(2): 279-284.
Abstract:
Dynamically stochastic simulation of flow in a phreatic aquifer is a complicated and challenging issue. A perturbation finite element model for transient two-dimensional flow in a phreatic aquifer is developed and presented in this paper. In the mode...
Dynamically stochastic simulation of flow in a phreatic aquifer is a complicated and challenging issue. A perturbation finite element model for transient two-dimensional flow in a phreatic aquifer is developed and presented in this paper. In the mode...
2008, 33(2): 285-288.
Abstract:
Although there is much work done on the geoparks at home and abroad, there are few researches done on the assessment index system of geological relic resources.Based on detailed studies on geological relic resources assessment, the authors plot the f...
Although there is much work done on the geoparks at home and abroad, there are few researches done on the assessment index system of geological relic resources.Based on detailed studies on geological relic resources assessment, the authors plot the f...
