tachylite

The bulk K-Ar ages of the pseudotachylites and their respective wall rocks from different localities yielded a narrow range of 81～93 Ma, and moreover, the laser probe 40Ar/ 39Ar dating of phengite overprinting the pseudotachylite gave a weight.

发育在大别造山带东部的假玄武玻璃是区域内 NE— SW向断裂带快速滑移形成的构造岩。

Recent field survey in the eastern Dabieshan has revealed extensive occurrences of pseudotachylite.

最近,在大别造山带东部广泛发现了假玄武玻璃出露点,这些假玄武玻璃主要沿NE-SW向断裂带或剪切带发育。

Two types of pseudotachylytes are observed in the Dahezhen ductile shear zone of the Tongbei-Dabie oro-genic belt, southwest Henan Province of China, one associated with the cataclasite cuts the foliation of mylonite and the other is interlayered and associated with the mylonite.

在桐柏—大别造山带大河镇剪切带中首次发现与碎裂岩和糜棱岩共生的两种不同类型的假玄武玻璃。

In this paper are summarized the concept, characteristics, occurrences and formation enviornments of pseudotachylyte, and its frictional-melting origin.

对假玄武玻璃的概念和特征以及形成环境和产状作了综合性描述，并对其摩擦熔融成因进行了论证。