landforms (relief features) associated with plate boundaries ? ? ?
TRANSCRIPT
![Page 1: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/1.jpg)
Landforms (Relief Features) associated with plate boundaries
?
?
?
![Page 2: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/2.jpg)
Constructive Plate Boundary –
initial stage
Rift Valley
e.g. East African rift valley
![Page 3: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/3.jpg)
Rift Valley with stepped faults, and tilted blocks (horsts)
Initial doming from upwelling magma
Leads to Y-shaped rifting.
![Page 4: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/4.jpg)
A shallow sea basin may form – lots of evaporite salt deposits.
Middle Stage
![Page 5: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/5.jpg)
Mid ocean ridge created by sea floor spreading.
Magnetic stripes as evidence for the spreading.
Fissure volcanoes e.g. Iceland
Later stage
![Page 6: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/6.jpg)
Underwater mountain range
Central rift valley
Offset by transform faults
![Page 7: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/7.jpg)
Destructive Plate Boundary – type 1
Ocean plate v. Ocean plate
Ocean trench e.g. Aleutian trench
Island arc volcanoes e.g. Aleutians (off Alaska)
![Page 8: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/8.jpg)
Pacific Ring of Fire
![Page 9: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/9.jpg)
Ocean plate v. Continental plate (Sometimes called a SUBDUCTION ZONE)
Ocean plate subducts as it is denser
Ocean trench e.g. Peru-Chile trench
Cordillera range of Young Fold Mountains e.g. Andes
Andesitic volcanic peaks e.g. Nevada del Ruiz
Destructive Plate Boundary – type 2
![Page 10: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/10.jpg)
Destructive Plate Boundary – type 3
Continental plate v. continental Plate collision
A collision zone
Major fold mountains e.g. Himalayas and High Plateau e.g. Tibet
e.g. Ocean plate carrying India drifted northwards until India collided with Eurasian plate.
![Page 11: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/11.jpg)
Conservative Plate Boundary
No volcanic features
Plenty of earthquakes e.g. San Andreas fault.
Fault line scarp slopes
Horizontal movement faults
![Page 12: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/12.jpg)
Fault displacement features
![Page 13: Landforms (Relief Features) associated with plate boundaries ? ? ?](https://reader034.vdocuments.mx/reader034/viewer/2022051400/5515c08355034693758b460b/html5/thumbnails/13.jpg)
Mid ocean ridge
Transform fault
Conservative Plate Boundaries are transform faults
which displace mid ocean ridges in Constructive plate Boundaries