Geological and touristic value of Late Devonian-Permian sedimentary formations in Vietnam

The geological and touristic value of Late Devonian – Permian (D3 – P) sedimentary formations in Northern Vietnam

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Brachiopod fossil (Early Devonian) of Male formation in Dong Van, Ha Giang.

Funded by Nafosted (2016-2019)

Vietnam’s upper Devonian – Permian stratigraphic level plays significant roles in geology, paleobiology and geological heritage. These formations are composed mainly of thick limestones and are distributed widely in Northern Vietnam. They relate to some important World Heritage and Global Geopark landscapes such as Ha Long Bay, Phong Nha – Ke Bang National Park, and Đồng Văn Geopark Plateau.
Fossil and stratigraphic data of the upper Devonian – Permian level in Vietnam are scattered in several Vietnamese geological review papers, but have not been properly compiled and updated according to the Stratigraphic Code of Vietnam. Therefore, it is necessary to re-evaluate all fossil and stratigraphic data from previously published sources and to comprehensively update the stratigraphic assignments.

Prof. Phuong
Prof. Ta Hoa Phuong.

We also aim to evaluate sites with potential value for geological heritage that are related to the upper Devonian – Permian stratigraphic level, such as the chronostratigraphic Frasnian/Famennian (F/F) boundary at Xom Nha and the karst cave system at Phong Nha-Ke Bang National Park, Quang Binh Province. We will use modern analytical methods (stable isotopes, MSEC – magnetic susceptibility Event and Cyclostratigraphy, chemical composition) to comprehensively emphasize the scientific value as well as aesthetic and educational applications.

Prof. Phuong (left) receiving a small present from his VNU co-worker
Prof. Phuong (left) receiving a small present from his VNU co-worker.

Geosciences are improving the lives of people in Vietnam