Volcanic growth faults and the origin of Pacific abyssal hills

被引:172
|
作者
Macdonald, KC [1 ]
Fox, PJ [1 ]
Alexander, RT [1 ]
Pockalny, R [1 ]
Gente, P [1 ]
机构
[1] UNIV CALIF SANTA BARBARA,INST MARINE SCI,SANTA BARBARA,CA 93106
关键词
D O I
10.1038/380125a0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The topographic features known as abyssal hills characterize >30% of the ocean floor, and yet their origin has been the subject of vigorous debate for over 40 years. Submersible-based investigations show that Pacific abyssal hills are created on the flanks of the East Pacific Rise as horsts and grabens which lengthen with time; Hills are bounded on one side by ridge-facing scarps produced by normal faulting, and on the other by more gentle slopes produced by volcanic growth faulting.
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收藏
页码:125 / 129
页数:5
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