Editing Magnetometer (section)

===Oil exploration===
[[Seismic]] methods are preferred to magnetometers as the primary survey method for oil exploration although magnetic methods can give additional information about the underlying geology and in some environments evidence of leakage from traps.<ref>{{cite web|url=http://www.paper.edu.cn/scholar/downpaper/liuqingsheng-6 |archive-url=https://web.archive.org/web/20180911045038/http://www.paper.edu.cn/scholar/downpaper/liuqingsheng-6 |url-status=dead |archive-date=2018-09-11 |title=中国科技论文在线 }}</ref> Magnetometers are also used in oil exploration to show locations of geologic features that make drilling impractical, and other features that give geophysicists a more complete picture of [[stratigraphy]].