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通过精细露头层序地层学的研究,将三叠纪标定了二级层序2个,三级层序9个。提出并厘定了层序旋回的等级系列:一级(200—400Ma),二级(10—100Ma),三级(1—10Ma),四级(0.1—0.2Ma),五级(0.2—0.05Ma)和六级(±0.02Ma)层序旋回。将三叠纪盆地划分为被动边缘(T1+2)和前陆盆地(T3)阶段。进一步标定了古构造沉降对有效容纳空间及层序形成的贡献。提出并规范了高频层序的内涵本质及其划分方案。建立并标定了不同物质背景之下的高频层序四种鉴定类型:三角洲河口坝或滨岸旋回序列型;波痕指数垂向有序变化型;厚层灰岩或白云岩与薄层灰岩或白云岩有序叠置偶合型和砂屑灰岩与砂、泥岩层偶型。高频层序行为堆叠样式及其所携带的信息可深刻地揭示三级层序的内部构架,提高地层对比精度。为建立高分辨率层序地层学和定量编制全球海平面变化曲线奠定了基础。
Through the study of the fine outcrop sequence stratigraphy, the Triassic has been calibrated with two second-level sequences and nine third-level sequences. The series of cyclical sequence are proposed and determined: the first grade (200-400Ma), the second grade (10-100Ma), the third grade (1-10Ma), the fourth grade (0.1-0.2Ma), the fifth grade 0.2-0.05Ma) and six (± 0.02Ma) sequences. The Triassic basin is divided into passive margin (T1 + 2) and foreland basin (T3). The contribution of palaeotectonic subsidence to the effective accommodation space and sequence formation was further calibrated. Proposed and regulated the essence of the high-frequency sequence and its division scheme. Four types of high-frequency sequence under different material backgrounds were established and calibrated: Delta mouth bar or coastal sequence sequence; Wave index vertical orderly variation; Thick limestone or dolomite and thin layer ash Molybdenum or dolomite ordered superimposed coupled type and litter limestone and sand, mudstone even type. The stacking pattern of high-frequency sequence behavior and the information it carries can deeply reveal the internal structure of the third-order sequence and improve the accuracy of formation contrast. It laid the foundation for establishing high-resolution sequence stratigraphy and quantitatively preparing global sea level curve.