iron-bearing mineral meaning in Chinese

Whereas the rocks in the ancient heavily cratered terrains were basaltic , the younger rocks of the northern lowlands resembled a more highly evolved type of lava called andesite : they contained more glass , more silica - rich minerals and fewer iron - bearing minerals
古老、充满坑洞的地区，岩石属于玄武岩，但北方低地较年轻的岩石却类似一种更高度演化、称为安山岩的熔岩：它们含有较多玻璃质、较多富矽矿物、以及较少含铁矿物。
Magma rose from the mantle forms new crust and slowly squeezes old one aside . since the earth s magnetic field alternates from north to south about every 10 , 000 years , the iron - bearing minerals in the crust magnetize and " memorize " the direction of the prevailing magnetic field , just like a magnetic tape recording the geological evidence of aeon
国际天文学联会international astronomical union由2001年起曾多次就行星的定义作出讨论，最终联会各与会者于2006年8月24日作出共识，定义行星planet为是一颗星体，需附合下面的三个条件：