In geology, a trough is a linear structural depression that extends laterally over a distance. Although it is less steep than a trench, a trough can be a narrow basin or a geologic rift. These features often form at the rim of tectonic plates. There are various oceanic troughs, troughs found under oceans. Examples include:
- the Cayman Trough
- the Kings Trough
- the Nankai Trough
- the Rockall Trough and others along the rift of the mid-oceanic ridge
- the South Shetland Trough
- the Suakin Trough in the Red Sea
- the Timor Trough
- Einsele, Gerhard (2000). Sedimentary Basins: Evolution, Facies, and Sediment Budget (2nd ed.). Springer. p. 630. ISBN 978-3-540-66193-1.
- Robert Dinwiddie: Ocean_ The World's Last Wilderness Revealed. Dorling Kindersley, London 2008, S. 452
- "Chapter II (Geology of Timor-Leste)". Atlas of mineral resources of the ESCAP region Volume 17 Geology and Mineral Resources of Timor-Leste (PDF). United Nations Economic and Social Commission for Asia and the Pacific. 24 December 2003. Archived from the original (PDF) on 20 May 2005.
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