新西兰韦恩加瓦河砾石的沉积环境、阶地断错和8级地震重复率

地震地质 ›› 1988, Vol. 10 ›› Issue (1): 39-50.

新西兰韦恩加瓦河砾石的沉积环境、阶地断错和8级地震重复率

程绍平

国家地震局地质研究所

收稿日期:1986-07-31 出版日期:1988-03-09 发布日期:2009-11-25

DEPOSITIONAL ENVIRONMENTS OF GRAVELS, TERRACES DISPLACED BY WAIRARAPA FAULT AT WAINGAWA RIVER AND RECURRENCE INTERVAL OF 1855 EARTHQUAKE, SOUTHERN NORTH ISLAND, NEW ZEALAND

Cheng Shao-ping

Institute of Geology, State Seismological Bureau

Received:1986-07-31 Online:1988-03-09 Published:2009-11-25

摘要/Abstract

摘要： 新西兰北岛南部韦恩加瓦河地区在晚更新世冰缘气候控制下,由沉积和侵蚀的交替作用形成较高较老的阶地。较低较新的阶地是在全新世中期以来的现代正常气候条件下形成的。这些阶地分别被怀拉拉帕断层水平错动297米、100米,57米和28米。距今10000年以来,怀拉拉帕断层的平均水平滑动速度为10毫米/年。1855年8级地震的重复率为1500年。

关键词: 新西兰, 韦恩加瓦河, 怀拉拉帕断层, 砾石, 阶地断错, 地震重复率

Abstract: The heigher and older terraces at Waingawa river, southern North Island, were formed by the alternate effect of aggradation and erosion under periglacial climate during -late-Pleistocene and the lower and more recent ones by present-day climate since mid-Holocene. These terraces have been displacad 279m, 100m, 57m and 28m respectively. The estimated average slip rate of the Wairarapa fault since 10000 B. P. is 10mm/y. The recurrence time for magnitude 8 earthquakes like that which occurred in 1855 is estimated to be 1500 years.

Key words: New Zealand, Waingawa river, Wairarapa fault, Gravel, Faulted terrace, Recurrence interval

程绍平. 新西兰韦恩加瓦河砾石的沉积环境、阶地断错和8级地震重复率[J]. 地震地质, 1988, 10(1): 39-50.

Cheng Shao-ping. DEPOSITIONAL ENVIRONMENTS OF GRAVELS, TERRACES DISPLACED BY WAIRARAPA FAULT AT WAINGAWA RIVER AND RECURRENCE INTERVAL OF 1855 EARTHQUAKE, SOUTHERN NORTH ISLAND, NEW ZEALAND[J]. SEISMOLOGY AND GEOLOGY, 1988, 10(1): 39-50.

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