欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以沉积层序为时间单位进行岩相古地理研究需要对野外剖面、测井、录井、地震、岩心等海量数据进行定量分析对比,而传统的人工方法往往难以有效地管理并利用这些资料。文中使用空间数据库技术将基础地质数据以自然层为单位,按统一标准定量化处理;并以层序为单位计算、统计、分析,提取厚度、白云岩含量、灰泥含量、陆源碎屑含量等反映沉积环境特征的多种单因素,定量绘制各单因素等值线图。在区域地质背景分析的基础上,将各单因素等值线图叠加分析,并探索定量古地理研究方法——通过单因素复合公式计算值划分古地理单元的边界,最终绘制出古地理图。以鄂尔多斯奥陶系马五组上部一个层序时段（464～466Ma）为例,运用上述方法自动识别出古陆、山丘高地、潮上带、潮间带、潮下带等古地理单元。研究表明,空间数据库技术是实现定量古地理的有效手段。
英文摘要：
In the study of sequence litho-palaeogeography,the quantitative analysis,precise calculation and detailed comparison of tremendous geological data,such as field profiles,logging records and seismic curves from different areas,are the basic requirements.In order to obtain a more reliable and precise result,we have developed a method,by using the spatial database to manage effectively the data that cannot be treated by traditional ways.Various attributes of the basic stratigraphic units and their characteristics,such as sequence thickness,pene-contemporaneous dolostone content,shallow water plaster content,and terrigenous material content,can be fully utilized statistically in facies analysis and in mapping.Based on this analysis,we have exerted single-factor isopachous mapping quantitatively for each of the Ordovician sequences in the basin,and we used a single factor formula to delineate the borders of facies units.Finally synthesis multiple factors have to be used to reconstruct the litho-palaeogeography for each of the sequence intervals.The study shows that the proposed method is quite effective and has a much higher resolution in recognizing litho-paleogeographic subunits than traditional ways.For example,in one of the Middle Ordovician sequence interval（444-446 Ma） of the Ordos Basin,we have successfully mapped the precise distribution of various facies units,such as old land,submarine uplift,up tidal flat,middle tidal flat and down tidal flat.
同期刊论文项目
同项目期刊论文
Early Triassic carbon isotope excursions from South China: Proxies for devastation and restoration o
A new SHRIMP age of the Xiamaling formation in the North China plate and its geological significance
The last permian deep-water fauna: Latest Changhsingian small foraminifers from southwestern Guangxi
Oligocene clay mineralogy of the Linxia Basin: Evidence of Paleoclimatic evolution subsequent to the
Earliest Triassic microbialites in the South China block and other areas: controls on their growth a
Restudy of conodont zonation and evolution across the P/T boundary at Meishan section, Changxing, Zh
Hypersaline and anoxia in the Devonian Frasnian-Famennian transition: molecular fossil and mineralog
The protracted Permo-Triassic crisis and multi-episode extinction around the Permian-Triassic bounda
Radiolarian and conodont biozones Permian and Triassic radiolarians from northern Tibet: correlation
SHRIMP U-Pb zircon age of tuff from the Kunyang group in central Yunnan: Evidence for Grenvillian or
Onset of biotic and environmental recovery from the end-Permian mass extinction within 1-2 million y
Ostracods (Crustacea) and water oxygenation in the earliest Triassic of South China: implications fo
Middle Permian Seamount from Xiahe Area, Gansu Province, Northwest China: Zircon U-Pb Age, Biostrati
Observations on the surface microreticulation of platform elements of Neogondolella (Conodonta) from
Cenozoic sedimentary records and geochronological constraints of differential uplift of the Qinghai-
The Permian seamount stratigraphic sequence in Chiang Mai, North Thailand and its tectogeographic si
Size variation of conodont elements of the Hindeodus-Isarcicella clade during the Permian-Triassic t
Anachronistic facies in the Lower Triassic of South China and their implications to the ecosystems d
Cyclostratigraphy of the Induan (Early Triassic) in West Pingdingshan Section, Chaohu, Anhui Provinc
End-Permian conodont fauna from Dongpan section: Correlation between the deep- and shallow-water fac
Late Changhsingian radiolarian biostratigraphy from Guangxi, South China and its correlation to cono
High-resolution cyclostratigraphy of geochemical records from Permo-Triassic boundary section of Don
A late Changhsingian (latest Permian) radiolarian fauna from Chaohu, Anhui and a comparison with its
A new brachiopod fauna from the Early to Middle Permian of southern Qinghai Province, northwest Chin
Provenance and tectonic setting of the Neoproterozoic Yanbian Group, western Yangtze Block (SW China
Devonian Frasnian-Famennian transitional event deposits of Guangxi, South China and their possible t
Structural and geochronological constraints on the tectono-thermal evolution of the Danba domal terr
Soft-sediment Deformation Structures Related to Earthquake from the Devonian of the Eastern North Qi
SHRIMP U-Pb ages of K-bentonite beds in the Xiamaling Formation: Implications for revised subdivisio
Carbon isotope evidence for widespread methane seeps in the ca. 635 Ma Doushantuo cap carbonate in s
Early diagenetic growth of carbonate concretions in the upper Doushantuo Formationin South China and
Sand veins and MISS from the Mesoproterozoic black shale (ca. 1.7 Ga) in North China: Implication fo
The Pengguan tectonic dome of Longmen Mountains, Sichuan Province: Mesozoic denudation of a Neoprote
Understanding the coevolution of life and environment in great turning periods of Earth history Pref
Ecological evolution across the Permian/Triassic boundary at the Kangjiaping Section in Cili County,
Late Quaternary river terrace sequences in the eastern Kunlun Range, northern Tibet: A combined reco
Facies changes and diagenetic processes across the Permian-Triassic boundary event horizon, Great Ba
Constraints on the depth, geometry and kinematics of blind detachment faults provided by fault-propa
Late Silurian trace fossils from the Melbourne Formation, Studley Park, Victoria, southeastern Austr
Detrital Composition of Lower-Middle Jurassic Sandstones from Huangshi,Hubei:Implication for Provena
Silurian collisional suturing onto the southern margin of the North China craton: Detrital zircon ge
Organic geochemical characterization and depositional paleoenvironments of the Devonian strata in Gu
Geology of the Gushan iron oxide deposit associated with dioritic porphyries, eastern Yangtze craton
New Ar-40-Ar-39 age constraints on the deformation along the Machaoying fault zone: Implications for
Pyrite framboids showing pseudomorphisms of microbial colonies within the Permian Zoophycos spreiten
Environmental and biotic turnover across Permian-Triassic boundary from shallow carbonate platform i
Spatio-temporal carbon isotope variation during the Ediacaran period in South China and its impact o
Middle and Late Triassic radiolarians from northern Tibet: Implications for the Bayan Har Basin evol
Magnetostratigraphy of the Lower Triassic beds from Chaohu (China) and its implications for the Indu
Foraminiferal survivors from the Permian-Triassic mass extinction in the Meishan Section, South Chin
期刊信息
位置：