The Tenjong Dendang Formation is a geologic formation in Malaysia. The band of graptolite- and trilobite-bearing shales interbedded in limestones preserves graptolite, brachiopod and trilobite fossils dating back to the Hirnantian stage of the Late Ordovician period.[1] The sediments were deposited during the Late Ordovician glaciation.
| Tenjong Dendang Formation | |
|---|---|
| Stratigraphic range: Hirnantian ~ | |
 Map of Langkawi, the formation is found on the island in the northeast; Langgan | |
| Type | Formation |
| Lithology | |
| Primary | Limestone |
| Other | Shale |
| Location | |
| Coordinates | 6°24′N 99°54′E / 6.4°N 99.9°E |
| Approximate paleocoordinates | 23°42′N 133°00′E / 23.7°N 133.0°E |
| Region | Langgan, Kuah, Langkawi |
| Country |  Malaysia |
| Type section | |
| Named for | Tanjong Dendang point |
  Tenjong Dendang Formation (Malaysia)  Tenjong Dendang Formation (Kedah) | |
Fossil content
editThe following fossils were reported from the formation:[1][2]
Trilobites
editHyolitha
editStrophomenata
editGastropods
editPterobranchia
editSee also
edit- Soom Shale, Hirnantian fossiliferous formation of South Africa
- Tufs et calcaires de Rosan, Hirnantian fossiliferous formation of France
- Cancañiri Formation, Hirnantian fossiliferous formation of Bolivia
References
edit- ^ a b Tenjong Dendang Formation at Fossilworks.org
- ^ Kobayashi et al., 1964
Bibliography
edit- Kobayashi, T.; Jones, C. R.; Hamada, T. (1964), "On the Lower Silurian shelly fauna in the Langkawi Islands, Northwest Malaya", Japanese Journal of Geology and Geography, 35: 73–80