tailieunhanh - Báo cáo "QUATERNARY GEOLOGICAL MAP OF THE CONTINENTAL SHELF OF VIETNAM AT THE SCALE OF 1:1,000,000 "

Eastern Sea of Vietnam is the world's largest semi-open sea and is bounded by archipelagos, islands, mainland and connected partially with Pacific and Indian Ocean. Its total water surface area is about 2,974,600km2. Vietnamese and foreign geoscientists have researched, got samples and mapped the geological map of Eastern Sea since 1960s but no guidance or right method was carried out to map, especially in presenting geological units on geological map. So that, in this article, the Geological Quaternary map of Eastern Sea is created by using group of methods, methodology and literatures for sediment, geophysics,. The methodology is. | vnu. journal of science earth sciences n0i 2007 QUATERNARY GEOLOGICAL MAP OF THE CONTINENTAL SHELF OF VIETNAM AT THE SCALE OF 1 1 000 000 Tran Nghi Dinh Xuan Thanh Nguyen Thanh Lan Tran Thi Thanh Nhan Pham Nguyen Ha Vu College of Science VNU ABSTRACT. Eastern Sea of Vietnam is the world s largest semi-open sea and is bounded by archipelagos islands mainland and connected partially with Pacific and Indian Ocean. Its total water surface area is about 2 974 600km2. Vietnamese and foreign geoscientists have researched got samples and mapped the geological map of Eastern Sea since 1960s but no guidance or right method was carried out to map especially in presenting geological units on geological map. So that in this article the Geological Quaternary map of Eastern Sea is created by using group of methods methodology and literatures for sediment geophysics . The methodology is systematization of research results of Vietnamese and foreign scientists on Quaternary geology in mainland and continental shelf. One of those results is the classification of sedimentary cycles in relation to sea level change in Quaternary. In seabed of Eastern Sea there are 25 geological units of 7 sedimentary cycles which includes 4 lithofacies Pliocene - Quaternary 14 lithofacies in Pleistocene and 6 lithofacies in Holocene coral reefs and volcanic rocks. Especially there are 8 ancient shoreline zones that acted as geological boundary from 3500m to 25m water depth in the sea bottom. 1. Introduction Vietnam situated in South East Asia has a long coast of about 3260km and more than 1 million square kilometers of water surface. It is rich in minerals such as oil gas placer mineral etc. In the recent decades the reinforcement of marine investigation and sampling on the Vietnamese sea floor have released by Vietnamese and foreign such as French German and Japanese scientists. But up to now a guidance norm for Pliocene - Quaternary marine mapping is still unavailable in Vietnam. For mapping .

• Báo cáo khoa học
• GEOLOGICAL MAP
• earth sciences
• Research
• VNU Journal of Science
• scientific research
• scientific reports
• basic geological
• Outline
• Approach
• Safety
• Field Behaviour
• Hand Lenses
• The subject of rock mechanics
• Content of this book
• Geological setting
• Natural rock environments
• Stress as a point property