在南海深海盆分布着大范围规律性很强的条带状磁异常。通过插值切割法对其中东部次海盆和西南次海盆的磁异常进行分析。发现南海深海盆区的磁力异常具有叠加性，西南次海盆主要受约5km以上的浅部磁源的影响，表现为NE2SW向展布，5km以下磁异常的展布开始变得模糊，强度也变弱；而东部次海盆不仅受5km以上的EW向浅部磁源的影响，同时深部磁源也起着很大的作用，在方向上也表现为EW向，但是强度随着深度而减弱。由此提出了两海盆地磁异常差异所反映的地球动力学过程，认为西南次海盆的磁源是通过大陆边缘裂谷作用过程形成；而东部次海盆深部和浅部磁异常的磁源具有同时性和相同形成机理，是通过海底扩张作用的方式形成的。在结合其他研究结果的基础上，探讨了南海西南次海盆和东部次海盆的动力学机制和演化历史。

利用磷灰石裂变径迹技术并结合库车坳陷的沉积和变形特征，对南天山的隆升和去顶作用过程进行详细的研究。南天山在中新世早期就开始了现代天山形成的隆升事件，根据样品的磷灰石裂变径迹结果，其隆升年龄为17～25Ma；而且此隆升事件是一快速隆升事件，隆升速率达到138.8～198.8m/Ma。中新世南天山隆升的南部边界并不是前人所认为的北部古生代地层和南部中新生代地层之间的冲断层，而是在南部的中新生代地层中。在库车坳陷的阳霞地区，隆升的界线位于吐格尔明背斜核部的韧性剪切带。通过库车坳陷的新生代沉积和变形特征的分析，提出了天山中新世以来的隆升与库车坳陷的沉积和变形特征存在很好的耦合关系。

Granitoids constituted a major part of the continental crust and are closely related to many kinds of metallic mineral resources. The petrology, mineralogy and geochemistry of granitoids have long been studied, but the study of physical properties of different genetic granitoids and their geological meaning has not been done at all. The authors have made the study of magnetic properties of two genetic granitoids of Guangdong Province.

We first report discovery of the spinel-garnet-orthopyroxene granulite with pure CO2 fluid inclusions from the Fuyun region of the late Paleozoic Altay orogenic belt in Central Asia, NW China. The rock is characterized by an assemblage of garnet, orthopyroxene, spinel, cordierite, biotite, plagioclase and quartz. Symplectites of orthopyroxene and spinel, and orthopyroxene and cordierite indicate decompression under UHT conditions. Mineral chemistry shows that the orthopyroxenes have high XMg and A1203 contents (up to 9.23 wt%). Biotites are enriched in TiO2 and XMg and are stable under granulite facies conditions. The garnet and quartz from the rock carry monophase fluid inclusions which show peak melting temperatures of around -56.7℃, indicating a pure CO2 species being presented during the ultrahigh-T metamorphism in the Altay orogenic belt. The inclusions homogenize into a liquid phase at temperatures around 15.3-23.8℃ translating into CO2 densities of the order of 0.86-0.88g/cm3. Based on preliminary mineral paragenesis, reaction textures and petrogenetic grid considerations, we infer that the rock was subjected to UHT conditions. The CO2-rich fluids were trapped during exhumation along a clockwise P-T path following isothermal decompression under UHT conditions.

The wave velocity for two types of granitoids was measured using the analytic method of full-wave vibration at high pressure and high temperature. The laws of velocity changes for them differ with the pressure beast and temperature rise, and the velocity change of S-type is more violent than that of I-type. The "softening point" of compressional wave velocity (Vp) is also revealed during the measurement for two types of granitoids imitating the pressure and temperature at a certain depth. But the depth of "softening", Vp after "softening" and the percentage of Vp's drop around the "softening point" for two types of granitoids are obviously different. The depth of "softening" is 15km approximately and Vp after "softening" is 5.62 km/s for S-type granitoid. But for I-type granitoid the depth of "softening" is 26km approximately and Vp after "softening" is 6.08 km/s. Through careful analysis of rock slices after the experiment, it was found that the "softening" of elastic-wave velocity is caused by the partial melting of granite. Combined with the results of geophysical prospecting, these results suggest that the low-velocity layers developing in the interior of Earth crust are related to the partial melting of different types of granitoids. The formation of the low-velocity layer in the upper-middle Earth crust is closely related to the development of S-type granitoid, but that in the lower Earth crust is closely related to the development of I-type granitoid.