This paper presents the structure and contents of a standardized layered classification system of digital geomorphology for China.This digital classification method combines landforms characteristics of morphology wit...This paper presents the structure and contents of a standardized layered classification system of digital geomorphology for China.This digital classification method combines landforms characteristics of morphology with genesis.A total of 15 categories of exogenic and endogenic forces are divided into two broad categories：morpho-genetic and morpho-structural landforms.Polygon patches are used to manage the morpho-genetic types,and solitary points,lines and polygons are used to manage the morpho-structural types.The classification method of digital morpho-genetic types can be divided into seven layers,i.e.basic morphology and altitude,genesis,sub-genesis,morphology,micro-morphology,slope and aspect,material and lithology.The method proposes combinations of matrix forms based on layered indicators.The attributes of every landform types are obtained from all or some of the seven layers.For the 15 forces categories,some classification indicators and calculation methods are presented for the basic morphology,the morphologic and sub-morphologic landforms of the morpho-genetic types.The solitary polygon,linear and point types of morpho-structural landforms are presented respectively.The layered classification method can meet the demands of scale-span geomorphologic mapping for the national primary scales from 1：500,000 to 1：1,000,000.The layers serve as classification indicators,and therefore can be added and reduced according to mapping demands,providing flexible expandability.展开更多
Integrating the surface structures with the reinterpretations of 3-D velocity images, this paper puts forward a kind of multi-oriented and layered structure for those of the upper and mid-lower crust, lithospheric and...Integrating the surface structures with the reinterpretations of 3-D velocity images, this paper puts forward a kind of multi-oriented and layered structure for those of the upper and mid-lower crust, lithospheric and asthenospheric mantle in Tethyan erogenic belt of western Yunnan and Sichuan, China (Sanjiang belt). There exists a detachment between upper and mid-lower crust. The lithospheric mantle is a rigid and competent body unable to be deformed which preserved the older tectonic framework. The asthenosphere is an imcompetent layer that is easy to be deformed, and behaves as an initiation region of deformation, and its structural patterns reflect younger tectonics. The Cenozoic intracontinental magmatism of this region is controlled by: (i) sub-meridional and NNE trending asthenospheric upwelling around the western margin of Yangtze block; (ii) crust-mantle transitional layer formed by underplating of ascending melts; and (iii) intersection or transformation of regional structures such as major faults.展开更多
A novel layered compound, [Ni(C 10 H 8N 2) 2V 3O 8 5 ], was hydrothermally synthesized and structurally characterized by single crystal X ray diffraction. The compound crystallizes in monoclinic system, space group P2...A novel layered compound, [Ni(C 10 H 8N 2) 2V 3O 8 5 ], was hydrothermally synthesized and structurally characterized by single crystal X ray diffraction. The compound crystallizes in monoclinic system, space group P2 1/c with a =1 551 8(3) nm, b =1 476 1(3) nm, c =1 048 3(2) nm, β=92 02(3)°, V = 2 399 8 (8) nm 3, Z=4, R=0 046 7, wR 2= 0 085 9.展开更多
基金Key Project of the National Natural Science Foundation of China, No.40871177 No.40830529 No.40971063
文摘This paper presents the structure and contents of a standardized layered classification system of digital geomorphology for China.This digital classification method combines landforms characteristics of morphology with genesis.A total of 15 categories of exogenic and endogenic forces are divided into two broad categories：morpho-genetic and morpho-structural landforms.Polygon patches are used to manage the morpho-genetic types,and solitary points,lines and polygons are used to manage the morpho-structural types.The classification method of digital morpho-genetic types can be divided into seven layers,i.e.basic morphology and altitude,genesis,sub-genesis,morphology,micro-morphology,slope and aspect,material and lithology.The method proposes combinations of matrix forms based on layered indicators.The attributes of every landform types are obtained from all or some of the seven layers.For the 15 forces categories,some classification indicators and calculation methods are presented for the basic morphology,the morphologic and sub-morphologic landforms of the morpho-genetic types.The solitary polygon,linear and point types of morpho-structural landforms are presented respectively.The layered classification method can meet the demands of scale-span geomorphologic mapping for the national primary scales from 1：500,000 to 1：1,000,000.The layers serve as classification indicators,and therefore can be added and reduced according to mapping demands,providing flexible expandability.
文摘Integrating the surface structures with the reinterpretations of 3-D velocity images, this paper puts forward a kind of multi-oriented and layered structure for those of the upper and mid-lower crust, lithospheric and asthenospheric mantle in Tethyan erogenic belt of western Yunnan and Sichuan, China (Sanjiang belt). There exists a detachment between upper and mid-lower crust. The lithospheric mantle is a rigid and competent body unable to be deformed which preserved the older tectonic framework. The asthenosphere is an imcompetent layer that is easy to be deformed, and behaves as an initiation region of deformation, and its structural patterns reflect younger tectonics. The Cenozoic intracontinental magmatism of this region is controlled by: (i) sub-meridional and NNE trending asthenospheric upwelling around the western margin of Yangtze block; (ii) crust-mantle transitional layer formed by underplating of ascending melts; and (iii) intersection or transformation of regional structures such as major faults.
文摘A novel layered compound, [Ni(C 10 H 8N 2) 2V 3O 8 5 ], was hydrothermally synthesized and structurally characterized by single crystal X ray diffraction. The compound crystallizes in monoclinic system, space group P2 1/c with a =1 551 8(3) nm, b =1 476 1(3) nm, c =1 048 3(2) nm, β=92 02(3)°, V = 2 399 8 (8) nm 3, Z=4, R=0 046 7, wR 2= 0 085 9.
