Dictionary of Geotourism

2020 Edition
| Editors: Anze Chen, Young Ng, Erkuang Zhang, Mingzhong Tian

Geosyncline

Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_886

A geosyncline is a banded tectonic unit on the crust that is active, strongly deformed, subject to long-term subsidence, and receiving sedimentary deposits. Geosynclines not only have significant sedimentary deposits but also contain unique rock formations, such as spilite-keratophyre and flysch. Geosynclines are usually uplifted by ‘fold inversion’ and, due to intense metamorphism and abundant intermediate-acidic igneous activity, form orogenic belts that are characterised by linear folds and thrust nappes.

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