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长江下游两岸发育有十多个侏罗白垩纪火山岩盆地。它们的构造背景不同,火山岩的组合面貌,岩石成分也有相应的差异。作者们认为这与部份熔融时和岩浆结晶时的条件有关。溧水、庐枞是其中二个较大,研究程度亦较高的火山岩盆地,故选择为探讨构造作用和岩浆活动间相互联系的典型地区。 我们的研究是在我所原庐江队和原溧水组的工作基础上进一步加深的,岩石硅酸盐分析均采自他们的资料,我们补做了痕量元素和稀土元素分析。在此基础上对岩浆源和岩浆结晶过程做了探讨。痕量元素由江苏省地质局中心实验室与我所实验室分析,稀土元素由地科院测试所分析。
There are more than ten Jurassic Cretaceous volcanic basins developed across the Yangtze River. Their different tectonic settings, volcanic rock composition, rock composition also has the corresponding difference. The authors consider this to be related to the conditions at the time of partial melting and crystallization of the magma. Lishui and Luzong are two of the larger volcanic basins with higher research level. Therefore, it is chosen to explore the typical areas where the tectonic process and the magmatism are interrelated. Our research is further deepened on the basis of the work of our original Lujiang team and the original Lishui Formation. The rock silicate analysis is based on their data. We have done some trace element and rare earth element analysis. On this basis, the magma source and magma crystallization process are discussed. Trace elements by the Jiangsu Provincial Bureau of Geological Laboratory Laboratory and our laboratory analysis of rare earth elements by the ASTRI test analysis.