报告题目： Granite perspective on origin of (some) shoshonitic/potassic magmas

报告地点：威廉希尔纬地楼3楼会议室

报告时间：2019年7月1日（星期一）下午2:30-4:00

报告人： ALEKSANDR SASHA STEPANOV 教授

报告人简介：

Stepanov教授，俄罗斯人，中国地质大学（武汉）教授。1996-2004，本科硕士就读于俄罗斯新西伯利亚国立大学地质与地球物理系,2012年博士毕业于澳大利亚国立大学，随后在澳大利亚塔斯马尼亚大学作博士后研究员和高级研究员。长期从事于花岗岩及共生矿床研究，LA-ICPMS在矿床学研究的应用技术开发等。目前发表文章27篇，工业报告17篇。

报告简介：

Potassium rich shoshonitic and ultrapotassic magmas are important components of many orogenic belts. These rocks are used for tectonic reconstructions and sometimes ore deposits are associated with them. Petrogenesis of alkaline rocks is complicated and in multiple studies they were considered to form by melting of mantle rocks.Recently new model was developed, which proposed that some suites of potassic rocks could form by the process of crustal melting followed by the interaction with mantle. This type of models allows simple explanation to the number of characteristic features of shoshonites suites and raises new questions.

                                                                        （信息来源：汪方跃）