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In folded terrain, due to compression, a simple symmetrical down fold is termed a(n) syncline.
What is syncline?
- In structural geology, a syncline is a fold where the core of the structure is surrounded by newer layers.
- A Synclorium is a massive syncline with additional minor folds. Synclines often have a downward fold (synform), which is also referred to as a synformal syncline (i.e., a trough). However, when strata have been inverted and folded, upward-pointing synclines can be visible (an antiformal syncline).
- On a geologic map, synclines are shown as a succession of rock layers, with the youngest layers closest to the fold's center and an inverse sequence of the same strata on the other side of the fold.
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