推荐回答（1个）
地质地貌素描按其内容最常见的有地层、地质构造、地貌等几种类型。
1.地层素描图
地层素描的对象是地层，表示地层层位关系、地层特征等，如地层剖面素描图。
2.地质构造素描图
地质构造素描的主要对象是褶皱构造、断层构造、节理构造及其他构造地质现象。对它们的素描应分别注意它们的特点。
(1)褶皱素描:在素描动笔前，应首先选择“标志层”，选择某个岩层作为标志层，将这个“标志层”的岩性特征用素描技法表达出来。对“标志层”可着重描绘，将褶皱构造的形态特征充分显示出来。
(2)断层素描:其步骤跟褶皱基本一样，应先找出它的“标志层”，以此判断断层两盘的相对动向，确定断层类型。
(3)节理素描:绘图时主要应把几组不同方向的节理表现清楚，注意各组间的交角大小和各组节理的宽度大小符合实际和透视原理。
3.地貌素描图
地貌素描是一类视野较大的素描，从地貌角度考虑，主要表现地貌的基本特征，也可将地貌与岩石性质、地质构造的关系表达出来，或表现风化、流水侵蚀、冰川、火山、地震等地质作用与地貌的关系。
在野外所见到的各种典型地质地貌现象，大小不一，小的如一块标本或一个露头上的原生的沉积构造、次生的构造变形(断层构造和褶皱构造)、剥蚀风化等现象;较大的如一个山包或者较大范围内的地质构造特征或内外动力地质现象(如冰蚀地形、河流阶地、喀斯特地貌)等，均可用地质素描将其表现出来。素描图的原理就是绘画的原理，不过，地质地貌素描则要考虑地质、地貌的内容，反映出地质构造、地貌形态的特征。地质地貌素描与照相有一定的类似，但照相是纯直观的反映，而地质地貌素描则可突出地质和地貌内容的重点，作者能够有所取舍。照相需要条件，地质地貌素描则可随时进行。因而地质工作者应当学习地质地貌素描的方法，使之成为进行地质调查的手段之一。
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