1 / 11

Stereographic projections

Stereographic projections. Need to project planes and lines. Orthographic projections (will use in lab a little, less widely applied) Stereographic projection ( a form of spherical projections) - great deal of use in structural geology) - .

didier
Download Presentation

Stereographic projections

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Stereographic projections

  2. Need to project planes and lines • Orthographic projections (will use in lab a little, less widely applied) • Stereographic projection ( a form of spherical projections) - great deal of use in structural geology) -

  3. Imagine planes or lines being projected onto a hemisphere • Lower hemisphere projection (always look from above) - convention • Can use azimuth (200 degrees) or geographic (S20W) with stereonets

  4. A NS plane

  5. ….and its pole

  6. Orientation of a line

  7. Can use to :1plot data and 2 calculate geometries For example: if you have two lines in a plane, one can easily determine the orientation of the plane

  8. Exercisestoday • Plotting a plane • Plotting a line • Plotting a plane and a line contained in the plane • Finding apparent dips • Finding true strike and dip from apparent dips • Finding the plunge and trend of 2 intersecting planes • Determining the dihedral angle between planes

  9. Read: • Text 691-720 - stereonets • 34-35 The San Manuel fault

More Related