同义词
1)quarternary placer deposit,第四纪砂矿床2)quarternary exogenetic ore deposits,第四纪外生矿床3)quarternary volcanic ore deposit,第四纪火山矿床4)quarternary weathering ore deposit,第四纪风化矿床5)quaternary illuviated ore deposit,第四纪淋积矿床6)quaternary sedimentary ore deposit,第四纪沉积矿床
