Geological mapping(d 13-pg-23)

Habib-ur-Rehman (D-13-PG-23)

Geological Mapping

By Habib-ur-Rehman(D-13-PG-23)


Introduction to geological maps Characteristics Topographic maps Contour maps Reading map & Reading geological

structures• Folds • Faults• Dip and Strike

Conclusion

Contents


Geological map is a map showing the rocks, (usually in units called formations) that crop out surface of the earth in specific area.

Introduction


Shows geological features Shows geological structures Relative ages of rocks Contacts between various rocks

Characteristics


A topographic map is one which shows configuration of land surface with the help of contours

Topographic map


Contour or contour line is line on map which has the same elevation above the sea level along the entire length


V that point up valley Near upper part of hills form

closure Widely spaces on gentle

slopes and closed spaced for steep slopes

Do not cross each other

Rules for contours


Contour map is a geological means of representing the earth’s three-dimensional surface into two-dimensions

Contour map


Geological structures Folds Faults Dip Strike Etc.

Reading geological structures


Folds


Fold


Determining folds


QuestionNow find out which one is a anticline and which is syncline?

Syncline Anticline


Drawing cross-section


Fault



Faults


Dip and Strike



Fault, dip & Strike in map



A geological map provide the key for understanding the Geological structures(From two dimensions to three dimension) Geological history of a particular region(Age of rocks)

Summary


Principles of geology by K.M Banger Geological structures and maps-A Practical

Guide-by Richard Lisle Youtube.com

Reference


Thank you…

Science

Geological mapping(d 13-pg-23)