Dictionary of Geotourism

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

Upper Ordovician Hirnantian Global Stratotype Section and Point (GSSP) ‘Golden Spike’ at Wangjiawan, Yichang, Hubei

Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_2646

The term ‘Hirnantian’ originates from Hirnat in the Bala area of Wales, UK. The ‘Hirnantian Stage’ represents the uppermost Ordovician strata. Continuous sedimentation occurred in the Ordovician-Silurian strata in the Wangjiawan area in Yichang, Hubei Province. These rocks are rich in graptolite and brachiopod fossils that can be used for global comparisons. In May 2006, the International Union of Geological Sciences (IUGS) formally approved the proposal for the adoption of the section in northern Wangjiawan in Yichang, Hubei Province, as the global stratotype section and point for the bottom boundary of the ‘Hirnantian Stage’. Wangjiawan is located 42 km north of Yichang City. The Ordovician-Silurian outcrop at this location extends 150 m along the highway between the northern and southern Wangjiawan sections. The Ordovician Wufeng Formation in the northern Wangjiawan section is mainly composed of siliceous shale and other siliceous rocks. The bottom boundary of the ‘Hirnantian...

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© Springer Nature Singapore Pte Ltd. 2020