DEVELOPING MODEL AND PROSPECT OF THE DEEP IRON DEPOSITS IN ANSHAN-BENXI AREA, LIAONING PROVINCE

Anshan-Benxi area is the most important metallogenic site of banded iron formation in China, with numerous large and super large iron deposits. On the basis of regional geological and geophysical data, adopting the Euler deconvolution processing and gravity and magnetic inversion technique, three types of developing model for the deep iron deposits are put forward by an integrated study on three-dimensional geological modeling, with a prediction for iron ore prospect. It is predicted that the thrust nappe type and syncline covering type deep of iron deposits exist in Huolianzhai, Sishanling, Wolongzhen, east of Nanfen and Beitai. The Cenozoic covering type of deep deposits are expected in Zhangtaizizhen, southwest of Dengta County and northwestern Anshan. Furthermore, iron formations may exist about 3 km under the thrust fault in Huolianzhai of Benxi, about 2 km under the thrust fault in Sishanling of Benxi, and about 2 km under the covered area in Zhangtaizizhen of Dengta, with a great prospect.