����ʡ�������ܶ�ɽ��������Ҫ�Ľ�ɿ����������ڻ���- -���Թ�����ɿ������Ϲ�ϵ�����о��ж����¸߷� SPOT- - 5 ͼ��� Aster ��ң�е��ʽ��뷢�֣��ܶ�ɽ�����Ϲ���Χ������ڶ�����ι��죬��Ҫ������̫��Ⱥ���ϱ����Һ��ܶ�Ⱥ��ɽ���У��ϲ�����Ϊ��������ɽ���塣���ι��켯�зֲ�������С�������Ժͻ��ι��콻�С�Ӱ��ʴ����Ϣ��ȡ�о����֣����ι�����Χ�����ڲ������Ϻõ���Ⱦ�쳣���ǻ��쳣���������õ��ҿ�ǰ������������Χ��֪�Ľ�󴲺ͽ������Ƿֲ�������ң��ͼ�����ܶ�ɽ�������ƻ��ι��췢��������ȣ�Ӱ��������Ϊ���ͣ��ҳɿ������Ƹ�Ϊ��Խ���п��ܳ�Ϊ�ܶ�ɽ������һ�������ɿ�������

The region of Xiong'er Mountain in western Henan Province is important gold ore concentration area�� Circular- linear structures are in coupling relationship with ore- forming process�� Via conducting remote sensing geological interpretation of latest SPOT high- resolution remote sensing imagery and ASTE�� imagery��new circular structures have been discovered around Shangguan in the northern Xiong'er Mountain�� They mainly develop in ancient metamorphic rocks of Taihua Group and volcanic rocks of Xiong'er Group�� Mesozoic Huashan granites dis- tribute around south of Shangguan�� Multiple circular- structures are in concentrated distribution in this region�� Mo- reover��large rings often trap small ones inside them�� Circular and linear structures intersect each other�� Study of alteration extraction from SPOT and ASTE�� imagery shows that Abnormal iron- strain and hydroxyl are well devel- oped within and around region of circular structures��which suggests good prospecting foreground�� Only a few gold deposits and gold occurrences are known around the studied region previously��while the interpretation of remote sensing imagery reveals wide distributions of suspected ore occurrences�� Compared with other areas where circular structures develop in region of Xiong'er Mountain��the characteristics of imagery are more typical and more advanta- geous in metallogenic conditions�� This area may become another ore concentration area of gold and silver in the re- gion of Xiong'er Mountain��