sterionet projection of 3 d structural data l.
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Sterionet projection of 3-D structural data - PowerPoint PPT Presentation


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Sterionet projection of 3-D structural data. • Stereonet basics • plotting lines and planes • Some example problem and solutions. Lower hemisphere of a sphere projected onto a flat surface. • a type of ‘3-dimensional protractor’ • allows analysis of structural data in 3-dimensions

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Presentation Transcript
slide2
• Stereonet basics

• plotting lines and planes

• Some example problem and solutions

lower hemisphere of a sphere projected onto a flat surface
Lower hemisphere of a sphere projected onto a flat surface

• a type of ‘3-dimensional protractor’

• allows analysis of structural data in 3-dimensions

• plot data on tracing paper overlaid on net

elements of a stereonet
Elements of a Stereonet

Great Circles - large circular arcs running north-south

• equivalent to lines of longitude on globe

Small Circles - circular arcs running from east to west

• equivalent to lines of latitude on globe

elements of a stereonet5
Elements of a Stereonet

Primitive - the perimeter of the stereonet

• divided into 360 degrees at 2 ° increments

• perimeter indicates compass directions

two types of stereonets used geology
Two types of stereonets used geology:

1. Schmidt net

2. Wulff net

slide11

Plot the plane

Strike 30º, and

Dip 60º