向斜盆地

向斜盆地区域动力水流模型

Regional dynamic flow model in synclinal Basin

研究结果表明：矿床的空间定位受晚古生代向斜盆地及其中的层间断裂带（F1F3）与北东向、东西向断裂交切复合部位及燕山期岩浆活动中心引起的环形构造联合控制；

The results of studies suggest the location of uranium deposits is jointly controlled by Late Palaeozoic synclinal basin , the intersection parts of interformational faults ( F1 , F3 ) in the basin with NE and EW trending faults and circular structures caused by Yanshanian magmatic activity centers .

总体构造面貌为南北走向，呈东缓西陡的不对称箕状向斜盆地，构造运动以升降运动为主，区域断裂构造微弱。

The general tectonic features show a anisomerous syncline of widely slow eastern side and precipitously narrow west , running north to south . The neotectonic movement in the region was mainly vertical movement with less regional faults .

沉积环境主要为河流湖泊体系，煤层主要发育于废弃三角洲朵叶上，在整个向斜盆地中，北翼煤层发育好，煤层厚度大。

The depositional environments are mainly river and lacustrine system . The coal beds are mainly formed in the lobe of scrap delta . Generally , the best coal beds located in the northern part of the syncline basin have great thickness .

北台盆地为宽缓的向斜，盆地沉积充填序列为火山沉积序列。

Beitai basin is a trapped syncline with its sedimentary sequence composed of volcanic sedimentary facies .

滇西发育一系列地堑&向斜小型自流盆地，是寻找古河道砂岩型铀砂的有利地区。

A series of small artesian basins of graben-syncline type are developed in West Yunnan , which are the advantageous areas to prospecting the sandstone U deposit of ancient river bed .

桥头河向斜是涟邵煤田重要的含煤向斜盆地之一。

Qiaotouhe syncline is one of the important coal-bearing syncline basin in Lianshao coalfield , Hunan .

所谓向斜型蓄水构造是指能富集和储藏地下水的向斜构造或构造盆地，其地下水的补径排特征主要取决于上覆隔水岩层的覆盖条件和地形地貌条件。

The so called synclinal water-storing structure refers to syncline structure or tectonic basin which can concentrate and store the groundwater . And the feature of groundwater within these structures depends on hydrologic barrier overlying and the landform .