tectonic lake

The lake in this basin was formed before the volcanic eruption. Thus, it is not a checked-np lake, but a tectonic lake in genesis.

盆地中湖泊的形成是在火山喷发之前，不是壅塞成因而是构造成因。

The Nam Co tectonic belt of WNW-trending occurring in west of the Namco Lake is composed of 20 thrust faults of north dipping, wide ductile shear zone, 4 belts of ophiolite pieces and many thrusted rock pieces.

前锋纳木错构造带总体呈WNW向展布，由20多条向北倾斜的逆掩断层、宽阔的韧性剪切带、4条蛇绿岩片带与大量不同类型的构造岩片所组成。

The formation of entrenched valley is the mutual effect of tectonic movement and sea ( lake ) level.

下切谷的形成是构造运动和海 ( 或湖 ) 平面共同作用的结果.

Types of lakes: tectonic lake, crater lake, fluvial lake, dammed lake, glacier lake, karst lake, Aeolian lake, impact crater lake and artificial lake.

湖泊分类：构造湖、火山口湖、冲积残留湖、堰塞湖、冰川湖、喀斯特湖、风成湖、陨石撞击湖和人工湖。

Type ⅱ sequence interface was formed when the basement nonlinear subsidence speeded up and the tectonic subsidence acceleration was bigger than or equal to lake level falling acceleration.

Ⅱ型层序界面是在基底非线性加速沉降，并且构造沉降加速度大于或等于湖平面下降加速度的背景下形成的。

Based on the geologic background of the tectonic subsidence in Dongting Lake area, the paper analyzes and researches on the presentational character index of tectonic subsidence in Dongting Lake area, which mainly includes stratigraphy, type of rivers, antiques, ancient architectures, earthquake activities etc.

从洞庭湖区构造沉降地质背景入手，分析研究了洞庭湖区构造沉降表象特征指标。主要包括地层、河流类型、古文物、古建筑、地震活动等。