geologic record meaning in Chinese

地质记录
地质历史

The geologic record dates the final explosion of santorini with remarkable accuracy
圣多里尼最后爆发的地质学上记录日期是惊人地精确。
Paleomagnetists , who study the effect of the magnetic field in the geologic record , discovered this phenomenon while studying the crystalline structure of rocks
古磁学家在地质的记录方面研究磁场作用,在研究岩石的水晶的结构时发现了这一现象。
The geologic record also shows that the strength of the magnetic field varies widely in time , and fluctuates wildly during field reversals , sometimes dropping to zero gauss strength ; ie : the field vanishes , disappears
地质记录也表明磁场强度在时间上普遍变化，在磁场逆转期间广泛波动，有时降到零高斯强度；也就是：磁场消失不见了！