valley placer
1.On the basis of the researchs on geological tectonic conditions, coastal river-valley land forms ,Quaternary deposit characteristics and mineral-forming conditions of littoral placer gold in Liaodong Peninsula,and through comparison with mineral-forming conditions of large littoral placer gold deposits in foreign countries, this paper suggests that the region is similar in mineral-forming conditions and sedimentary environment to the large Alaska (U. S. A. )
