中文摘要：

东昆仑活动断裂是青藏高原东北部一条重要的NWW向边界断裂。玛曲断裂位于东昆仑断裂带的最东段。本文通过3个古地震剖面揭示出东昆仑断裂东段玛曲断裂全新世共有4次古地震事件。最新一次古地震事件为距今（1730±50）～（1802±52）a，第二次古地震的时间为距今（3736±57）～（4641±60）a；第三次为距今（8590±70）a；第四次为距今（12200±1700）a。其中第一次和第二次古地震事件的时间较为可靠，两次古地震事件之间的复发间隔为2400a左右，由此认为东昆仑断裂带东段的古震事件之间的复发间隔为2400a左右，古地震的离逝时间为距今（1730±50）～（1802±52）a。

英文摘要：

The East Kunlun active fault is an important NWW-trending boundary fault on the northeastern margin of the Qinghai-Xizang（Tibet） Plateau. Maqu fault is the easternmost segment of the East Kunlun active fault. Based on the three trenching, four Holocene palaeo-earthquake events are identified since Holocene along the Maqu Fault. The interval is between （ 1730 ± 50）a and （ 1802 ±52）a from nowadays to the time of the latest palae-earthquake event, and interval of the second palaeo-earthquake events is between （3736 ± 57）ka and （4641 ± 60）ka, and the third palaeo-earthquake events is （8590 ± 70）ka based on nowadays, and the last times is （12.2 ± 1.7） ka to nowadays. Thereinto, time of the first and second palaeo-earthquake events is more credibility than the third and last times. As a result, recurrence intervals of the palaeo-earthquake events about the easternmost segment of the East Kunlun active fault is approximately 2400 ka, and the palaeo- earthquake Elapsed time is between （1730 ± 50）a and （ 1802 ± 52） form nowadays.