Author Question: The term geologic structure is a general term. List and define three (3 ) major categories of ... (Read 93 times)

Engineer · **on:** Jul 13, 2018

The term geologic structure is a general term. List and define three (3 ) major categories of geological structures and briefly explain how each might have been formed.

Question 2

The world's biota occupy ___________________ _, which are regions characterized b a distinctive assemblage of plants and animals.
Fill in the blank(s) with correct word

tandmlomax84 · **Reply #1 on:** Jul 13, 2018

Answer to Question 1

Folds--Rock layers, when in compression, deform into folds. Folding is permanent. Most folding probably occurs deep in the crust where pressure and temperature are high and rocks are more ductile than they are at or near the surface.

Joints--Under some circumstances rock layers will fold, but if they are brittle they may respond to stress by fracturing. Joints are fractures along which no movement has taken place parallel to the fracture surface. A joint may open up, but the rocks on opposite sides of the fracture do not move up, down, or laterally along the fracture.

Faults--Faults occur when energy is suddenly released, usually as the result of displacement of rocks. On faults, blocks on opposite sides of the fracture move parallel with the fault surface. So, in the case of faults, blocks of rocks move up, down, or along the fracture
surface.

Answer to Question 2

biotic provincesprovinces