对内蒙古呼伦湖地区的研究表明当湖泊水深较大时 (对应于湿润气候 ) ,所沉积的泥质沉积物的磁性较高 ;反之 ,水位低时 (对应于干旱气候 ) ,所沉积的砂性沉积物的磁化率较低 .深入的岩石磁学研究证实 ,来自湖泊流域火山岩中的碎屑磁铁矿广泛地存在于泥质及砂性样品之中 .当湖泊水位较高时 ,在相对的还原条件下 ,在泥质沉积物中形成次生的铁磁性硫化铁矿物 .该磁性矿物叠加在少量的碎屑成因的磁铁矿上 ,主导了泥质沉积物的磁性 ,导致了磁化率的上升 Studies on the Hulun area in Inner Mongolia show that the sedimentary muddy sediments have higher magnetic properties when the water depth of the lake is larger (corresponding to the humid climate); on the contrary, when the water level is low (corresponding to arid climate), the deposited sand The magnetic susceptibility of sediments is relatively low. In-depth rock magnetism studies confirm that detrital magnetite from volcanic rocks in the lake basin is widely present in muddy and sandy samples. When the lake water level is high, , A secondary ferromagnetic iron sulphide mineral is formed in the muddy sediments, and the magnetic minerals superimposed on a small amount of detrital magnetite dominate the magnetism of the muddy sediments, leading to magnetization The rate of increase