摘要
莲花山断裂带是我国东南陆缘带中的一条重要的深大断裂带。本文从古夷平面、水系形态、河流阶地及断裂活动形迹等方面,探讨了该断裂带广东大陆部分的新构造运动特征,认为在新构造运动时期,莲花山断块隆起区至少上升了1000米;文中指出,莲花山断裂带的早期(E_3～N_2)主压应力方向为北东——南西向,晚期(N_2末—Q)转为北西西——南东东向,这一转变系与太平洋板块向欧亚板块的俯冲有关。
The Lianhuashan Fault Zone is an important deep fault along the con tinental marginal belt of Southeast China,This paper discusses its charac teristics of neotectonic movements according to anciant peneplans, river sys tems, terraces and active tectonics.
The authors consider that during neotectonic period, the Lianhuashan fault-block uplifted area rose up more than 1000m,The principle compressive stress direction of the Lianhuashan fault Zone was northeast-southwest during the early neotectonic stage (E3-N2) .In the late stage ( the end of N2-Q) it became to NWW-SEE. This change is obviously related to downthrust slab movements of the pacific plate to the Euro-Asia plate.
出处
《华南地震》
1990年第2期25-34,共10页
South China Journal of Seismology
