Abstract

The results of prior studies are generalized and the author’s data on the geology, geochemistry, and isotope geochronology of the Early–Middle Devonian volcanic series of Western Gorny Altai and Rudny Altai that are related to two large volcanic systems, the Altai–Minusinsk and Altai–Salair, respectively, are presented. The studied basalts have convergent geochemical characteristics between the rocks in back-arc basins and island arcs or their rear extension zones. It is considered that the back-arc-basin–island-arc system was developed in the Early–Middle Devonian on the Altai margin of the Siberian continent.

中文翻译：

---

岛弧-弧后盆地系统的玄武质火山活动（阿尔泰活动边界）

摘要

总结了先前的研究结果，并提供了与西戈尔尼阿尔泰早期和中泥盆纪火山系列的地质，地球化学和同位素地球年代学相关的数据，该系列与两个大型火山系统阿尔泰－米努辛斯克和阿尔泰有关–分别介绍了Salair。所研究的玄武岩在后弧盆地的岩石与岛弧或其后延伸区之间具有收敛的地球化学特征。人们认为，后弧盆-岛弧系统是在西伯利亚大陆阿尔泰边缘的早中泥盆世开发的。