走向与倾向英语ppt

1、Name:Zhang xuCONTENTSSummarize1Geologic Map2Strike and dip3Geologic cross sections4Strike and dipGeologic MapWhat is Geologic Map?What information can get?How to get the information?SummarizeWhat is strike and dip ?How to get strike and dip?How to draw strike and dip?Geologic cross sectionsWhat is G

2、eologic cross sections ?How to draw it?CONTENTSSummarize1Geologic Map2Strike and dip3Geologic cross sections42.2. Geologic MapWhat is Geologic Map Use standardized symbols to represent rock types and geologic strcture. Typically produced from the field map. legend2.2. Geologic MapWhat information ca

3、n get? The type and distribution of rock units. The occurrence of structural feature(fold,faults,etc)foldfaultslegend2.2. Geologic MapHow to get information? Different colors and patterns represent distinct rock unit. Use standard symbols and termsyllowbrownbluegreen2.2. Geologic MapHow to get infor

4、mation?Stratum attitudeReverse of stratum attitudeBedding attitudeNameSign Illustrate Different colors and patterns represent distinct rock unit. Use standard symbols and termsCONTENTSSummarize1Geologic Map2Strike and dip3Geologic cross sections43.3. Strike and dipHorizontal planeDip direction Strik

5、e directionInclined plane3.3. Strike and dipHow to get strike and dip? Brunton pocket transit is used by geologists for meansuring the strike and dip. It is mainly formed by three parts .Structure of pocketcompasslevelclinometerstrikedip Strike is the compass direction of a line formed by the inters

6、ection of an inclined plane with a horizontal plane. The direction of dip is the compass direction in which the angle of dip is measured.3.3. Strike and dipHow to draw strike and dip?Horizontal strata 35 newoldInclined strata Strike represent by long line and dip represent by short line. The angle of dip is given as a number next to the symbol.CONTENTSSummarize1Geologic Map2Strike and dip3Geologic cross sections44.Geologic cross sections It represent a vertical slice through a portion of earth.What is Geologic cross sections ?4.Geologic cross sections It are c