Characteristics of Geological Heritages in Phu Yen Potential Geopark, Vietnam

Abstract

With an area of 1,575 km2, the coastal area of Phu Yen province (the area to be established in Phu Yen Geopark, hereinafter referred to as the research area) is a place with great potential for local heritage. Initial research results have established 9 types of geological heritage here including: Paleontology; Geomorphology and Landscape; Paleo-environment; Rock; Stratigraphy; Minerals; Geo-Economics; Tectonic structure, evolutionary history of geological and Quaternary geology, marine geology, and ocean-continent interactions. The most valuable geological heritages include: Fossil leaves, fossil wood, fossil diatomae, Neogene age in Tuy An; Columnar basalt in Da Dia Reef, in Hon Yen and elsewhere; beautiful lagoons, bays and beaches; Magma formations related to the Indosini orogeny and the collision between the Indochinese geo-lithic with the Vietnam-China complex; The difference in vertical movement in Neogene - Quaternary creates mountainous and hilly terrain in the northern, western and southern parts, while the eastern part is a plain, bordering the sea; Historical development of Quaternary sediments created 4 terraces along the Ba River valley; marine activities created 3 coastal erosion shelves. The study of geological heritage and other heritage values is the scientific basis for establishing a geopark in Phu Yen. Key words: geological heritage, Phu Yen