SUMMARY

Some structural features of Pliocene-Quaternary sediments in the Giao Thủy area, Nam Định Province
on the analytic basis of Bouguer gravity anomalies combined with other geologo-geophysical data

Phạm Nam Hưng, Nguyễn Đức Vinh

On the basis of analytic results of Bouguer gravity anomalies combining with other geologo-geophysical data in the Giao Thủy area, we received the following results:

    1/ The greatest depth to the bottom of structural layers existing in the Giao Thủy area are as follows:

    - Hải Hưng structural layer: from 70 to 76 m.

    - Hà Nội structural layer: from 120 to 130 m.

    - Lệ Chi structural layer: from 250 to 260 m.

    - The depth to the bottom of Vĩnh Bảo Fm: from 450 to 460 m.

    2/ Density value of the Hải Hưng Fm is 1,40-1,64 g/cm³; Hà Nội Fm is 1,45-1,70 g/cm³; Lệ Chi Fm is 1,54-1,78 g/cm³; and Vĩnh Bảo Fm is 1,63-1,90 g/cm³.

Người biên tập: PGS.TS Đỗ Đức Thanh.