Mantle skewness and ridge segmentation

Nature ◽  
2009 ◽  
Vol 458 (7241) ◽  
pp. E11-E12 ◽  
Author(s):  
Satish C. Singh ◽  
Ken C. Macdonald
Keyword(s):  
Ridge Segmentation

scholarly journals Magmatic and tectonic extension at the Chile Ridge: Evidence for mantle controls on ridge segmentation

2016 ◽  
Vol 17 (6) ◽  
pp. 2354-2373 ◽  
Author(s):  
Samuel M. Howell ◽  
Garrett Ito ◽  
Mark D. Behn ◽  
Fernando Martinez ◽  
Jean-Arthur Olive ◽  
...  
Keyword(s):  
Chile Ridge ◽  
Ridge Segmentation ◽  
Tectonic Extension

Preliminary analysis of the Knipovich Ridge segmentation: influence of focused magmatism and ridge obliquity on an ultraslow spreading system

2002 ◽  
Vol 202 (2) ◽  
pp. 275-288 ◽  
Author(s):  
Kyoko Okino ◽  
Daniel Curewitz ◽  
Miho Asada ◽  
Kensaku Tamaki ◽  
Peter Vogt ◽  
...  
Keyword(s):  
Preliminary Analysis ◽  
Knipovich Ridge ◽  
Ridge Segmentation

scholarly journals Aborted propagation of the Ethiopian rift caused by linkage with the Kenyan rift

2020 ◽  
Author(s):  
G Corti ◽  
R Cioni ◽  
Z Franceschini ◽  
F Sani ◽  
S Scaillet ◽  
...  
Keyword(s):  
Rift Zone ◽  
Numerical Models ◽  
Ethiopian Rift ◽  
Magmatic Activity ◽  
Geological Data ◽  
East African ◽  
Ridge Segmentation ◽  
Pure Extension ◽  
African Rift ◽  
Ocean Ridge

© 2019, The Author(s). Continental rift systems form by propagation of isolated rift segments that interact, and eventually evolve into continuous zones of deformation. This process impacts many aspects of rifting including rift morphology at breakup, and eventual ocean-ridge segmentation. Yet, rift segment growth and interaction remain enigmatic. Here we present geological data from the poorly documented Ririba rift (South Ethiopia) that reveals how two major sectors of the East African rift, the Kenyan and Ethiopian rifts, interact. We show that the Ririba rift formed from the southward propagation of the Ethiopian rift during the Pliocene but this propagation was short-lived and aborted close to the Pliocene-Pleistocene boundary. Seismicity data support the abandonment of laterally offset, overlapping tips of the Ethiopian and Kenyan rifts. Integration with new numerical models indicates that rift abandonment resulted from progressive focusing of the tectonic and magmatic activity into an oblique, throughgoing rift zone of near pure extension directly connecting the rift sectors.

scholarly journals Geochemical Variability Along the Northern East Pacific Rise: Coincident Source Composition and Ridge Segmentation

2019 ◽  
Vol 20 (4) ◽  
pp. 1889-1911 ◽  
Author(s):  
Soumen Mallick ◽  
Vincent J. M. Salters ◽  
Charles H. Langmuir
Keyword(s):  
East Pacific Rise ◽  
East Pacific ◽  
Ridge Segmentation

Mechanics of oblique spreading and ridge segmentation

1997 ◽  
Vol 148 (3-4) ◽  
pp. 405-421 ◽  
Author(s):  
M ABELSON ◽  
A AGNON
Keyword(s):  
Ridge Segmentation
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