Imbricate Structure in Essex Offshore Shell Banks

Nature ◽  
1968 ◽  
Vol 220 (5172) ◽  
pp. 1115-1116 ◽  
Author(s):  
J. T. GREENSMITH ◽  
E. V. TUCKER
Keyword(s):  
Imbricate Structure

scholarly journals Imbricate structure of Luobusa ophiolite, southern Tibet

2008 ◽  
Vol 2 (4) ◽  
pp. 280-281
Author(s):  
Hiroshi Yamamoto ◽  
S Yamamoto ◽  
Y Kaneko ◽  
M Terabayashi ◽  
T Komiya ◽  
...  
Keyword(s):  
Southern Tibet ◽  
Imbricate Structure

Imbricate structure of the Luobusa Ophiolite and surrounding rock units, southern Tibet

2007 ◽  
Vol 29 (2-3) ◽  
pp. 296-304 ◽  
Author(s):  
Hiroshi Yamamoto ◽  
Shinji Yamamoto ◽  
Yoshiyuki Kaneko ◽  
Masaru Terabayashi ◽  
Tsuyoshi Komiya ◽  
...  
Keyword(s):  
Surrounding Rock ◽  
Southern Tibet ◽  
Imbricate Structure

STRUCTURE OF THE LOWER CONTINENTAL RISE HILLS OF THE WESTERN NORTH ATLANTIC

Geophysics ◽  
1966 ◽  
Vol 31 (3) ◽  
pp. 506-523 ◽  
Author(s):  
James A. Ballard
Keyword(s):  
North Atlantic ◽  
Seismic Reflection ◽  
Average Length ◽  
Engineering Properties ◽  
Continental Rise ◽  
New Information ◽  
Cape Hatteras ◽  
Sediment Cover ◽  
East West ◽  
Imbricate Structure

Data acquired during a recent seismic reflection survey of portions of the western North Atlantic have provided new information on the movement and deposition of sediments on the ocean floor. The area surveyed included portions of the lower continental rise hills which form the transition between the continental rise and the abyssal floor east of Cape Hatteras. The lower rise hills are ridges having a general east‐west orientation and an average length of 20 miles. Individual hills have 25 to 50 fathoms relief and are two to three miles wide. Each of the hills has a relatively short, steep out‐crop slope facing seaward and a shallow dip slope. Shallow subbottom reflectors dip opposite to the regional slope; deep reflectors are structurally independent of the upper reflecting layers. In profile, the ridges appear to be imbricate blocks with a maximum thickness of 100 fathoms. Ridges become progressively smaller seaward and are eventually onlapped by the horizontal beds of the abyssal floor. No fault structure is visible. The imbricate structure of individual hills, dip reversals between the continental rise and lower rise hills, dip reversals between the lower rise hills and the abyssal floor, and the apparent recent denudation of sediment cover from the continental rise indicate that the lower rise hills are gravitational glide blocks. Published literature on the engineering properties of marine sediments illustrates progressive gravitational gliding on slopes as low as 1:100.

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