slide1 l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Introduction to the Brunton Compass PowerPoint Presentation
Download Presentation
Introduction to the Brunton Compass

Loading in 2 Seconds...

play fullscreen
1 / 13

Introduction to the Brunton Compass - PowerPoint PPT Presentation


  • 1548 Views
  • Uploaded on

Introduction to the Brunton Compass. Parts of the Compass Uses of the Brunton Compass - Bearing - Strike and Dip - Trend and Plunge Map Symbols . Text: Compton, p. 16-21; 34-39; Measurement of Attitude and Location; Lab 1 (website). Parts of the Compass. Compass Face

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Introduction to the Brunton Compass' - salena


Download Now 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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Introduction to the Brunton Compass

  • Parts of the Compass
  • Uses of the Brunton Compass
  • - Bearing
  • - Strike and Dip
  • - Trend and Plunge
  • Map Symbols

Text: Compton, p. 16-21; 34-39; Measurement of Attitude and Location; Lab 1 (website)

slide2

Parts of the Compass

  • Compass Face
  • - Arrow (white tip North)
  • - Directional Degrees (Quadrant or Azimuth)
  • Clinometer: Scales in Degrees and % Grade
  • Levels
  • - Bullseye Level
  • - Cylindrical Level
  • Mirror
  • Sighting Arm
  • Dampener
  • Magnetic Declination (~6.5° E of N)
slide3

Uses of the Brunton Compass

  • Locate North
  • Sight Angles
  • - measuring height / thickness of a feature
  • Bearing
  • Strike and Dip
  • Trend and Plunge
slide4

Bearing

Bearing: direction from one point to another point.

  • 1-directional line
  • Quadrant Notation: N or S____° E or W
  • Azimuth Notation: _____°

Note: With sighting arm pointing to object, always read the white tip of the needle.

slide5

Strike and Dip

Strike: Direction of the line of intersection between a tilted plane and a horizontal plane.

  • 2-directional line
  • Azimuth Notation: _____ °

Note: Read the end of compass needle that makes dip direction to the right of the strike direction (Right-Hand-Rule).

slide6

Strike and Dip

Dip: Angle between a tilted plane and a horizontal plane that is perpendicular to strike.

  • Maximum angle ( ≤ 90º )
  • Notation: ____ ° N, S, E, W, NE, NW, SE, SW

Note: If use Right-Hand-Rule, dip direction is implied.

slide7

W

E

Horizontal

Dip Angle

(E. McBride)

Cross-Section: Dipping Strata

slide8

W

E

Horizontal

Dip Angle

(E. McBride)

Cross-Section: Dipping Strata

slide10

Trend and Plunge

Trend: bearing of a linear feature.

  • 1-directional Line
  • Measured in Direction of Plunge
  • Azimuth Notation: _____°

Plunge: angle between a tilted linear feature and a horizontal plane.

  • Notation: ____°

Note: written as plunge, bearing

slide11

Trend and Plunge

Linear Glacial Striations (Maine)

slide12

strike and dip

strike and dip (vertical)

strike and dip (horizontal)

Map Symbols

(map view)

45º

slide13

Bring to Lab

  • Course Packet
  • Brunton Compass
  • Field Notebook
  • Ruler (metric)
  • Protractor
  • Calculator (tangent)
  • Clipboard