Structural elements of the fold (axis, axial plane, etc.).įor example, when a fold’s limbs dip away from the axial plane causing the fold toĬonvex upward, it is classified as an anticline, and vice versa. Geologists classify folds according to many aspects one of them is the position of the In width and others measure just a few centimetres or less. Where on Earth’s surface the fold has formedįolds can be simple single folds or highly complex folds in morphology and geometry,įolds can occur in any area and in any type of rock they also can vary in size.The amount of the fold that is exposed in the field.The volume of rock that has been folded.The position of the fold’s structural elements.The geological history of the rock before it was folded.Which of the following is used to classify a fold? This is because they consist of layers of different nature and colors, making the foldingĮxample 3: Understanding How Folds Are Classified Folds appear clearly in sedimentary rocks. Width, and others measure a few centimetres or less, as shown in Figure 3. Often found as several connected bends, so option E is the correct answer.įolds vary in extent or size.

So, the correct description of folds is that they can occur in any type of rock and are Most commonly, however, they are found as sets of multiple bends connected They are rarely found in nature as single folds, though this is possible. Layers upward or downward as a result of compressional stress.

Folds can occur in any type of rock and are often found as several connectedįolds are secondary geologic structures that form due to bending or curving horizontal.

Folds only occur in sedimentary rocks and are often found as several connected.

Folds can occur only in sedimentary and metamorphic rocks.

Folds can occur in any type of rock and are often found as a single bend.

Folds only occur in sedimentary rocks and are often found as a single bend.

Which of the following statements about folds is correct?

Example 1: Understanding the Definition of a Fold

The Fold by An Na