实习大纲内容 1、实习目的:通过实习,使学生了解岩石岩性;地质构造;地质演化历史、矿床及野外采集地质标本。加深学生对课堂教学内容的理解。 2、实习内容: (1)岩性实习;(2)构造实习;(3)野外地质综合实习。 3、实习基本要求:能够认识常见的矿物、岩石,了解地质构造、地质演化历史和矿床,掌握野外采集地质标本方法。 4、教学重点与难点: 教学重点是地质构造。难点是岩石岩性

INTRODUCTION TO STEREOGRAPHIC PROJECTIONS Basic principles Basic procedures Exercise in class

hinge lines axis A axial plane axial surface B (imaginary) Axis axial plane and axial surface

hangingwall ramp A- Ramps and flats hangingwall B-Hangingwall ramp and footwall footwall ramp footwall ramp B C-? thrust sequence New thrusts develop in the footwall

Planar fabric Linear fabric and the size and elements In one dimension is Are parallel to much Longer than that in one another the other two dimensions

(A)General triaxial stress ellipsoid in perspective view. (B)Views normal to each of the principal planes of the ellipsoid. (After W.D. Means,1976)

Determination of the relative movement of the two walls from the tension joints

TERMINOLOGY FOR DISPLACEMENT a is the rake angle

Main Bedding Types Bedding Shape level bedding ripple bedding Main Types of plate laminae

Review Show the homework and note book on your desk Practise measurement of attitude of planes and lines in the models