一、褶皱几何要素在赤平投影图上的特征和求解方法

掌握极射赤平投影的基本操作方法,在吴氏网上准确地读出构造要素的有关数据;

1.了解正投影的概念; 2.学会用正投影的方法确定构造面、线产状的方法; 3.通过正投影方法的训练,培养学生三维空间的思维能力;

实习目的 1.了解极射赤平投影的概念; 2.掌握极射赤平投影的基本原理; 3.掌握简单的面、线在吴氏网上的投影方法

Plate Tectonics Geologic Tectonics Earthquake Tsunamis海啸 and Coastal Flooding

Plate Tectonics Geologic Tectonics Earthquake Tsunamis海啸 and Coastal Flooding

Atomic Structure All natural and most synthetic substances on earth are made from the ninety naturally occurring chemical elements. An atom is the smallest particle into which an element can be divided while still retaining the chemical characteristics of that element (fig 3. 1). The nucleus, at the center of the atom contains one or more particles with a positive electrical charge(protons fif and usually some particles of similar mass that have no charge(neutrons

1、早期的太阳系 The Early Solar System Billions of years ago, out of a swirling mass of gas and dust, evolved a system of varied planets hurtling around a nuclear-powered star-our solar system. One of these planets, and one only, give rise to complex life forms. Over time

1. 大陆漂移假说形成、发展与衰落 2. 海底扩张 3. 板块构造 4. 板块与地质作用 ▪ 地震带的分布 ▪ 岩浆带的分布 ▪ 变质带的分布 ▪ 成矿作用 ▪ 混杂堆积 蛇绿岩套

一、时限22亿年 二、三个阶段地质时期(22亿年1万年)历史时期(1万年),近带(200年)