MỘT SỐ KẾT QUẢ NGHIÊN CỨU PHÂN BỐ SÒ, ĐIỆP KHU VỰC NGHỆ AN

Autor: Bùi Anh Nam, Nguyễn Bá Duẩn, Đặng Thanh Hải, Cao Đình Triều, Nguyễn Đình Nguyên, Ngô Gia Thắng
Rok vydání: 2011
Předmět:
Zdroj: VIETNAM JOURNAL OF EARTH SCIENCES. 33:97-108
ISSN: 0866-7187
4000-4600
DOI: 10.15625/0866-7187/33/2/284
Popis: Some results of placura and granosa shells distribution in Nghe An regionOn the basis of placura placenta-arca granosa shells investigation in Quynh Van, Dien Chau and Nghi Tien, some new results can be made as the following:- Banks of placura placenta-arca granosa shells in Quynh Van and Nghi Tien; deep-seated in Quynh Nghia, DienChau and along Nghi Yen seashore have the time of 4000-4600 yr.- The appearance of the placura placenta-arca granosa shells banks have not either the sources from marinetransgression in Holocene, tectonic movement or artificial.- It is possible that those are the deposits of the natural geological activities courses to the seashore in the time of4000-4600 yr ago.
Databáze: OpenAIRE