Abstract

The Southern Central Region was extremely affected by climate change during the Pliocene - Quaternary. The periods of transgressive entering into the coastal continent, due to the glacial, created 6 sea steps of different heights: 75-80 m, 50-60 m, 35-40 m, 10-30 m, 4-6 m, and 1-3 m corresponding to following periods: Donau-Gunz (Late Pliocene), Gunz-Mindel (Late Pleistocene - Early Qi'), Mindel-Riss (Middle Pleistocene, Early Qr^a), Riss - Wurm 1 (late of Middle Pleistocene, Late Qi^2b), Wurm 1-Wurm 2 (Late Pleistocene, Early Q]^3a) and Flandrian (Middle Holocene). In the glacial period, the continental shelf in the Southern Central Region created 5 ancient shorelines in the period of the lowest sea level, including: an ancient coastal zone at a depth of 180-200 m, 40,000-50,000 years in age; an ancient coastal zone at a depth of 140-150 m, about 15,000-18,000 years in age; an ancient coastal zone at a depth of 43- 63 m, Early Holocene, early section (¹⁴C: 10,100 years); an ancient coastal zone at a depth of 25-30 m, 8,000 years in age, Early Holocene; and an ancient coastal zone at a depth of 10-15 m, about 7,000 years in age. Based on analysis and synthesis of the sea shelf system and ancient shorelines, a curve oscillation of the regional sea level was identified during Pliocene – Quaternary.