Point 8 of 9 — Lesson 1: Structure of Earth, Geological Time and Structural GeologyQuestion bank: 1 questions (1 with pictures)
088 Joints
Joints are fractures of tectonic origin in igneous, sedimentary and metamorphic rocks with no evidence of movementalong them.
The spacing between joints varies from a few centimetres to tens of metres, depending on the rock type, the thickness of the rock and how the rock responds to the forces.
The ancient Egyptians used joints in rocks to build temples and tombs and to make obelisks.
Point of comparison
Fault
Joint
Fracture
Yes
Yes
Relative displacement of the sides
Yes
No
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1 questions linked to this point only, 1 of them with pictures.