Objective As a new type of gas hydrates,the natural gas hydrates in the perfost region of the Qilian Mountains are characterized by their shallow burial depth,welldeveloped coal seam,high content of h
<正>Remote sensing has played a pivotal role in our understanding of the geometry of dykes and dyke swarms on Earth,Venus and Mars(West and Ernst,1991;Mege and
<正>The mid-Pleistocene climate transition(MPT)has been widely reported in worldwide geological events.As a key issue of the Quaternary geology,it has attracted