2010 Vol. 35, No. 5
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2010, 35(5): 697-712.
doi: 10.3799/dqkx.2010.085
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Abstract:
By doing an integrated research on the types of 98 remnant basins, tectonic setting and lithostratigraphic sequence, we studied the evolution of tectonic lithofacies paleogeography of the Paleocene—Eocene, Oligocene, Miocene and Pliocene of Qinghai-T...
By doing an integrated research on the types of 98 remnant basins, tectonic setting and lithostratigraphic sequence, we studied the evolution of tectonic lithofacies paleogeography of the Paleocene—Eocene, Oligocene, Miocene and Pliocene of Qinghai-T...
2010, 35(5): 713-727.
doi: 10.3799/dqkx.2010.086.
Abstract:
In this paper we deduce the expanding and forming processes of the Qinghai-Tibet plateau by summarizing the spatio-temporal difference of uplift during Cenozoic. The uplift in the Paleocene-Eocene(65—35 Ma) mainly showed rock uplift driven by thrusti...
In this paper we deduce the expanding and forming processes of the Qinghai-Tibet plateau by summarizing the spatio-temporal difference of uplift during Cenozoic. The uplift in the Paleocene-Eocene(65—35 Ma) mainly showed rock uplift driven by thrusti...
2010, 35(5): 728-736.
doi: 10.3799/dqkx.2010.087
Abstract:
Clay mineralogy of sediments of the basins in different locations of the Qinghai-Tibet plateau was investigated to reveal the paleoclimate evolution in Tibet. Our results show that the planetary wind system prevailed over the Paleocene-Eocene in Tibe...
Clay mineralogy of sediments of the basins in different locations of the Qinghai-Tibet plateau was investigated to reveal the paleoclimate evolution in Tibet. Our results show that the planetary wind system prevailed over the Paleocene-Eocene in Tibe...
2010, 35(5): 737-746.
doi: 10.3799/dqkx.2010.088
Abstract:
The eastern Kunlun Orogen,as a southernmost morphotectonic transition belt of northward attenuation in topographic relief across the northern Tibetan plateau,is a key area in examining and recovering the processing and mechanisms of the far-field lit...
The eastern Kunlun Orogen,as a southernmost morphotectonic transition belt of northward attenuation in topographic relief across the northern Tibetan plateau,is a key area in examining and recovering the processing and mechanisms of the far-field lit...
2010, 35(5): 747-758.
doi: 10.3799/dqkx.2010.089
Abstract:
Zanda basin, formed in 9.5 Ma, is a Cenozoic sedimentary basin which lies in the converging range between the Himalaya tectonic belt and Karakorum tectonic belt. The Neogene strata in the basin are integrated, continuous and horizontal, showing a ste...
Zanda basin, formed in 9.5 Ma, is a Cenozoic sedimentary basin which lies in the converging range between the Himalaya tectonic belt and Karakorum tectonic belt. The Neogene strata in the basin are integrated, continuous and horizontal, showing a ste...
2010, 35(5): 759-773.
doi: 10.3799/dqkx.2010.090
Abstract:
The Gyirong basin is one of east-west extensional basins distributed among the high Himalayas. The Late Cenozoic sequence is mainly Woma Formation, consisting of lacustrine and fluvial deposits, from which a Hipparion fauna in 7 Ma was found. However...
The Gyirong basin is one of east-west extensional basins distributed among the high Himalayas. The Late Cenozoic sequence is mainly Woma Formation, consisting of lacustrine and fluvial deposits, from which a Hipparion fauna in 7 Ma was found. However...
2010, 35(5): 774-788.
doi: 10.3799/dqkx.2010.091
Abstract:
The measured section in the southern margin of Xunhua basin located at Yangjuangongbai-Xigoushangzhuang Village, Jishi Town, Xunhua County, Qinghai Province, consists of Miocene to Pliocene strata, named as Tala Fm., Xianshuihe Fm. (consisting of Zho...
The measured section in the southern margin of Xunhua basin located at Yangjuangongbai-Xigoushangzhuang Village, Jishi Town, Xunhua County, Qinghai Province, consists of Miocene to Pliocene strata, named as Tala Fm., Xianshuihe Fm. (consisting of Zho...
2010, 35(5): 789-802.
doi: 10.3799/dqkx.2010.092
Abstract:
Based on the study of the combining forms of the valence-variable elements such as Fe and Mn at the Oma section in the Gyirong basin, Tibet, and on the relation of the contents of the various forms of the valence-variable elements with climate condit...
Based on the study of the combining forms of the valence-variable elements such as Fe and Mn at the Oma section in the Gyirong basin, Tibet, and on the relation of the contents of the various forms of the valence-variable elements with climate condit...
2010, 35(5): 803-810.
doi: 10.3799/dqkx.2010.093
Abstract:
Xunhua basin is one of the inter-mountainous basins distributed in northeastern margin of the Tibetan plateau with over 1 000 m thick lacustrine and fluvial sediments of the Cenozoic. These sediments record both tectonics and climate changes and prov...
Xunhua basin is one of the inter-mountainous basins distributed in northeastern margin of the Tibetan plateau with over 1 000 m thick lacustrine and fluvial sediments of the Cenozoic. These sediments record both tectonics and climate changes and prov...
2010, 35(5): 811-820.
doi: 10.3799/dqkx.2010.094
Abstract:
The measured Yangjuangongbai-Xigoushangzhuang Section, Xunhua Section, lies in the southern margin of the Xunhua basin, which is composed of three lithostratigraphic units named Tala Formation, Xianshuihe Formation and Linxia Formation from Oligocene...
The measured Yangjuangongbai-Xigoushangzhuang Section, Xunhua Section, lies in the southern margin of the Xunhua basin, which is composed of three lithostratigraphic units named Tala Formation, Xianshuihe Formation and Linxia Formation from Oligocene...
2010, 35(5): 821-827.
doi: 10.3799/dqkx.2010.095
Abstract:
Diverse and abundant ostracoda fossils were found in the Gyirong basin in the south of the Tibet. Our research is based on 37 species of ostracoda including 8 undefined ones that belong to 9 generas. On the basis of the characteristics of ostracoda f...
Diverse and abundant ostracoda fossils were found in the Gyirong basin in the south of the Tibet. Our research is based on 37 species of ostracoda including 8 undefined ones that belong to 9 generas. On the basis of the characteristics of ostracoda f...
2010, 35(5): 828-838.
doi: 10.3799/dqkx.2010.096
Abstract:
To reconstruct the paleoclimate in the Miocene, clay mineralogy of the Xunhua sediments was investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods. Our results show that clay minerals of the Miocene sediments are ma...
To reconstruct the paleoclimate in the Miocene, clay mineralogy of the Xunhua sediments was investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods. Our results show that clay minerals of the Miocene sediments are ma...
2010, 35(5): 839-848.
doi: 10.3799/dqkx.2010.097
Abstract:
Based on the data of palynology from the Dahonggou Section, Daqaidam area in northeast marginal Qaidam basin. 5 palynological assemblages are recognized as follows: Quercoidites-Ephedripites-Meliaceoidites from the upper Lulehe Formation belongs Earl...
Based on the data of palynology from the Dahonggou Section, Daqaidam area in northeast marginal Qaidam basin. 5 palynological assemblages are recognized as follows: Quercoidites-Ephedripites-Meliaceoidites from the upper Lulehe Formation belongs Earl...
2010, 35(5): 849-856.
doi: 10.3799/dqkx.2010.098
Abstract:
Sedimentological analyses of the third terrace along the banks of the Yellow River in Xunhua basin have yielded results that have more than regional significance. They are concerned with the reaction of rivers to climatic changes in the Pleistocene. ...
Sedimentological analyses of the third terrace along the banks of the Yellow River in Xunhua basin have yielded results that have more than regional significance. They are concerned with the reaction of rivers to climatic changes in the Pleistocene. ...
2010, 35(5): 857-866.
doi: 10.3799/dqkx.2010.099
Abstract:
The later phase of marine isotope stage 3 (i.e. MIS3a) on Qinghai-Tibet plateau was characterized by its special warm-humid climate. The constructed AMS14C calendar age-depth model, the component of n-alkanes, together with the grain size and total o...
The later phase of marine isotope stage 3 (i.e. MIS3a) on Qinghai-Tibet plateau was characterized by its special warm-humid climate. The constructed AMS14C calendar age-depth model, the component of n-alkanes, together with the grain size and total o...
2010, 35(5): 867-872.
doi: 10.3799/dqkx.2010.100
Abstract:
This paper focuses on the aquatic environmental conditions responsible for kashin-beck disease (KBD) within the Ruo'ergai County of Sichuan Province. A total of 38 groundwater and surface water samples were collected during September 2008. The water ...
This paper focuses on the aquatic environmental conditions responsible for kashin-beck disease (KBD) within the Ruo'ergai County of Sichuan Province. A total of 38 groundwater and surface water samples were collected during September 2008. The water ...
2010, 35(5): 873-878.
doi: 10.3799/dqkx.2010.101
Abstract:
The variation characteristics of oxygen and hydrogen isotopes in surface runoff of the Lhasa River basin was studied based on the observations of δ18O and δD in river water and related meteorological and hydrological data in 2008. The results indicat...
The variation characteristics of oxygen and hydrogen isotopes in surface runoff of the Lhasa River basin was studied based on the observations of δ18O and δD in river water and related meteorological and hydrological data in 2008. The results indicat...
2010, 35(5): 879-884.
doi: 10.3799/dqkx.2010.102
Abstract:
Based on the grain size analyses of "Wushan Loess" at Wushan area, the causes of "Wushan Loess" are discussed in this paper. The results show as follows. The component particles of the "Wushan Loess" are predominantly less than 50 μm with the average...
Based on the grain size analyses of "Wushan Loess" at Wushan area, the causes of "Wushan Loess" are discussed in this paper. The results show as follows. The component particles of the "Wushan Loess" are predominantly less than 50 μm with the average...
2010, 35(5): 885-890.
doi: 10.3799/dqkx.2010.103
Abstract:
In this paper we present the magnetic fabric and magnetic susceptibility characters of one newly found "Wushan Loess" Section, which was also compared with the modern Yangtze River sediments and aeolian loess and "Sand-Dune" sediments distributed at ...
In this paper we present the magnetic fabric and magnetic susceptibility characters of one newly found "Wushan Loess" Section, which was also compared with the modern Yangtze River sediments and aeolian loess and "Sand-Dune" sediments distributed at ...
