**EASC2124 Intro to Structure Contours 2013 Contour Line**

Geology 2 Structural Geology Lab The Objectives are to gain experience 1. Drawing cross sections from information given on geologic maps. 2. Recognizing folds and naming their parts on stereoscopic air photos. 3. Thinking in three dimensions. 1. Maps and symbols This diagram defines the strike and dip of an inclined plane. The strike is the line that is formed by the intersection of the plane... Drawing structure contours that correspond to a given strike and dip This is the map view that corresponds to the 3D diagram on the previous page. Given a strike of α and a dip of θ measured at point P and a height of P (400m in this case): i. Draw a structure contour parallel to strike through point P and label with the height at P (400m). ii. Draw a line perpendicular to the strike, also

**3700 STRUCTURE AND TECTONICS LABORATORY EXERCISE 3**

This exercise begins with a revision exercise around dip and strike, followed by completion of a simple geological map and cross section. Geological Mapping Exercise 5 - Answers File. Geological Mapping Exercise 6 File. In this exercise students draw a geological map from a given description and then complete a cross section for this map. Geological Mapping Exercise 6 - Answers File... Strike and Dip. Strike and dip refer oriented parallel to the strike line. (or strike angle) can be given as either a quadrant Strike compass bearing of the strike line (N25°E for example) or in terms of east or west of true north or south, a single three digit number representing the azimuth, where the lower number is usually given (where the example of N25°E would simply be 025), or

**Strike and Dip Inside Mines**

(1) Given 3 points, draw them according to their relationship to one another (2) Draw structure contours by connecting points of equal elevation which have been interpolated based on the data (3) Strike is the azimuth of these strike lines from north how to add contacts to address book in outlook 2013 Then use the formula dip=arctan(change in elevation/map distance) to calculate the dip where the change in elevation refers to the difference (i.e. in feet) between the contour you used to find strike and the contour you used for the dip.

**Topography and geology University of Alberta**

A Three point problems B Rule of vees C Map interpretation and cross sections II Three point problems (see handout) A Three points define a plane B The line of strike is given by the bearing of a horizontal line in a plane; a horizontal line connects points of equal elevation. C The angle of dip is given by looking parallel to strike in a cross section drawn perpendicular to the line of strike how to cancel yarn chat fiction subscription android (1) Given 3 points, draw them according to their relationship to one another (2) Draw structure contours by connecting points of equal elevation which have been interpolated based on the data (3) Strike is the azimuth of these strike lines from north

## How long can it take?

### Evaluate The Geology Of The Area Selected For So

- Structure Contours Contour Line Map Scribd
- 3700 STRUCTURE AND TECTONICS LABORATORY EXERCISE 3
- Lab 8 Foldsandtheirmappatterns MIT OpenCourseWare
- geol1121_graphic.gif

## How To Draw Contours Given Strike And Dip

The Three-Point Problem Given the elevation of 3 points on a geologic surface What is the attitude (strike and dip) of that surface ? The Three-Point Problem Given the water level in 3 wells What is the gradient of the potentiometric surface ? The Three-Point Problem The 3 point problem is also a gateway to useful mathematics ! We will study 2 solutions to this problem using Cramer's Rule

- Structure contours for round-number contours (200 m, 300 m etc) may then be constructed by locating points (P) at round-number elevations. The position of a point P at a given …
- m 200m 100 A plane with a consistent strike and dip has 100m evenly spaced straight structure contours (figure 13), whilst a folded plane or a plane with irregular Figure 13: Structure contours on a simple bedding plane and the map view of the bedding plane. dip will have folded or varyingly spaced structure contours (figure 15). 22 School of Earth and Environment Contents N How to draw
- given at the end.) S A bedding plane in the Hoy a ndsto e, Witter Quarry, Orkney, Scotland. Photo: Peter Kennett. The dip is measured from the horizontal and so must be less than 90o. The shallow slope of this model has a small dip, as you can see if you look at the model from the side. Keep your model to help you to remember how dip and strike are measured, and the difference between true dip
- Most of students learn how to calculate a real dip from a couple of apparent dips or, inversely, how to work out an apparent dip given the real dip and another direction using the stereonet.