| 1. | Incised valley and its significance in oil and gas exploration
下切谷及其油气勘探意义 |
| 2. | All commercial biogenic gas is stored in the flood plain - estuary sand lenses of the incised of the incised valleys
所有的商业性生物气都存储在下切河谷内河漫滩河口湾砂质透镜体中。 |
| 3. | The site is bounded to the west by steep rugged uplands and incised valleys and to the south and east by steep rocky coastline
此地点的西面被陡峭的高地包围而处于谷中，其南面及东面则为陡斜的岩石海岸。 |
| 4. | The dry - hot valleys ( dhv ) are located mainly in the deeply incised valleys along the upper streams of several international and domestically rivers , like yangtz , zhu , lanchang , hong , and nu rivers
干热河谷主要分布于长江、珠江、澜沧江、红河和怒江等国内和国际性河流的上游深切河谷地段。 |
| 5. | Since the last glaciation , with variations in sea level , the development of incised valleys in the hangzhou bay area underwent three stages : 1 ) deep - cutting stage ; 2 ) rapid - filling stage ; and 3 ) rapid - burial stage
末次冰期以来，随着海平面变化，杭州湾地区下切河谷演化经历了深切、快速充填和埋藏三个阶段。 |
| 6. | In the research area , the incised valley was formed during the sea level downwards and was provided source by the arenaceous river from qiaotou . it is stacked by 3 incised valleys formed in 3 different sequences
研究区内子洲镇川堡地区发育的下切河谷形成于海平面下降时期，来源于桥头的砂质河流沉积，为叠置的、形成于三个不同三级层序底部的下切河谷充填沉积。 |
| 7. | The fall of global sea level during the last glacial maximum enhanced the fluvial gradient and river cutting , resulting in the formation of the large - scale qiantangjiang river and taihu incised valleys which were subsequently filled and rapidly buried in the post - glacial period , with the paleointerfluve being exposed to air on both flanks of the incised valleys
末次冰盛期，海平面下降的幅度大，增加了河流梯度、加强了下切作用，形成了钱塘江和太湖下切河谷，随后在冰后期被充填和埋藏，下切河谷的两侧为暴露地表的古河间地。 |
| 8. | Because during the sedimentation of the flood plain - estuary fades , the conditions of sea level rising , tidal regime , sediment supply and accommodation space were suitable for the development of a tidal ridge system , the sand lenses associated with this facies may represent tidal ridge formation in the incised valley
在河漫滩河口湾相沉积期问，由于海平面上升、潮流体系、沉积物供给和可容空间条件适合一个潮流沙脊体系的发育，其中的砂质透镜体可能代表了下切河谷内发育的潮流沙脊。 |
| 9. | The sediments of the incised valleys show an upward - fining succession , and can be grouped into four sedimentary fades : gravel lag - deposit of in - channel to partly over bank sediments of a meandering river , flood plain - estuary , estuary - shallow marine , and estuary sand bar , based on lithology , paleontology , and sedimentary textures and structures
根据岩石学、沉积结构和沉积构造特征，本区下切河谷充填沉积物具有向上变细的沉积层序，可以划分为4个沉积相类型：河床滞留沉积物到部分曲流河沉积体系的边滩沉积、河漫滩河口湾沉积、河口湾浅海沉积和河口湾砂坝沉积。 |
| 10. | Based on the analysis of a large number of drillings , the static sounding and chemical data obtained from the present hangzhou bay coastal plain , this paper presents the sedimentary facies and architectures of the qiantangjiang river and taihu incised valleys , and the characteristics of shallow gas reservoir distribution
摘要根据杭州湾沿海平原大量的钻井、静力触探井和分析化验等资料，研究了下切河谷（钱塘江和太湖下切河谷）充填物的沉积建造和沉积相，以及浅层生物气藏分布特征。 |
