Plate Tectonics - some assembly required
- Note at this point all the plate crusts are oceanic. We will place continental crust later.
- Double lines are often used to represent a divergent boundary ═════.
- Convergent boundaries are drawn like this: ▲▲▲▲▲▲. The arrows are on the overriding crust and point towards the direction of subduction.
- Transform boundaries are drawn as a single line — with arrows ⇄ straddling the line.
- You will need the "Plate tectonics some assembly required sheet ".
Plates 1 and 2
- Obtain the plates 1 and 2
- Write divergent boundary along the plate 1 and 2 boundary.
- Make a cylinder of your paper so the two opposite edges touch.
- Plate 2 is being subducted under plate 1. Draw the appropriate convergent boundary symbols on the boundary.
- Draw an island arc on plate 1.
Plates 3 and 4
- Obtain the plates 3 and 4.
- Place plates 3 and 4 underneath plate 1.
- Plate 4 is being subducted under plate 1. Draw the appropriate convergent boundary symbols on the boundary.
- Draw and label an island arc on plate 1
Plates 5 and 6
- Obtain the plates 5 and 6
- Place plates 5 and 6 underneath plate 2.
Place the Continents
- Draw a continent on the rightmost margin of plate 5.
- Draw a continent on the upper half of the leftmost margin of plate 6.
Final Boundary Identification
- Draw and label continental volcanic arcs or island arcs as appropriate.
Drawing Boundary Cross-sections
On a separate sheet of paper, draw and label the boundary cross-sections between:
- Divergent plate 1 and plate 2.
- Convergent plate 1 and plate 2.
- Convergent oceanic-oceanic plate 4 and plate 6.
- Convergent oceanic-continental plate 4 and plate 6.