scholarly journals Deep structure of the continental margin and basin off Greater Kabylia, Algeria – New insights from wide-angle seismic data modeling and multichannel seismic interpretation

2018 ◽  
Vol 728-729 ◽  
pp. 1-22 ◽  
Author(s):  
Chafik Aïdi ◽  
Marie-Odile Beslier ◽  
Abdel Karim Yelles-Chaouche ◽  
Frauke Klingelhoefer ◽  
Rabah Bracene ◽  
...  
Keyword(s):  
Continental Margin ◽  
Seismic Data ◽  
Deep Structure ◽  
Data Modeling ◽  
Seismic Interpretation ◽  
Wide Angle

Deep structure of the Atlantic margins and neighboring oceanic crust from wide-angle seismic data and plate kinematic reconstructions.

2021 ◽  
Author(s):  
Frauke Klingelhoefer ◽  
Youssef Biari ◽  
Dieter Franke ◽  
Thomas Funck ◽  
Lies Loncke ◽  
...  
Keyword(s):  
Oceanic Crust ◽  
Seismic Data ◽  
Deep Structure ◽  
Volcanic Eruptions ◽  
Wide Angle ◽  
Seismic Profiles ◽  
Initial Rupture ◽  
Mechanisms Of Formation ◽  
Break Up ◽  
Transform Margin

<p>In order to study opening mechanisms and their variation in the Atlantic ocean basins, we compiled existing wide-angle and deep seismic data along conjugate margins and performed plate tectonic reconstructions of the original opening geometries to define conjugate margin pairs. A total of 23 published wide-angle seismic profiles from the different margins of the Atlantic basin were digitized, and reconstructions at break-up and during early stages of opening were performed. Main objectives were to understand how magma-rich and magma-poor margins develop and to define more precisely the role of geologic inheritance (i.e., preexisting structures) in the break-up phase. At magma-poor margins, a phase of tectonic opening without accretion of a typical oceanic crust often follows initial rupture, leading to exhumation of serpentinized upper mantle material. Along volcanic margins the first oceanic crust can be overthickened, and both over- and underlain by volcanic products. The first proto-oceanic crust is often accreted at slow to very slow rates, and is thus of varied thickness, mantle content and volcanic overprint. Accretion of oceanic crust at slow to very slow spreading rates can also be highly asymmetric, so the proto oceanic crust at each side of conjugate margin pairs can differ. Another major aim of this study was to understand the mechanisms of formation and origins of transform marginal plateaus. These are bathymetric highs located at the border of two ocean basins of different ages and are mostly characterized by one or several volcanic phase during their formation. They often form conjugate pairs along a transform margin as it evolves and might have been the last land bridges during breakup, thereby influencing mammal migration and proto-oceanic currents in very young basins. At these plateaus, volcanic eruptions can lead to deposits of (at least in part subaerial) lava flows several km thick, better known by their geophysical signature as seaward dipping reflectors. Continental crust, if present, is heavily modified by volcanic intrusions. These marginal plateaus might form when rifting stops at barriers introduced by the transform margin, leading to the accumulation of heat in the mantle and increased volcanism directly before or after the cessation of rifting.</p>

scholarly journals The crustal structure of the NW Moroccan continental margin from wide-angle and reflection seismic data

2004 ◽  
Vol 159 (1) ◽  
pp. 117-128 ◽  
Author(s):  
I. Contrucci ◽  
F. Klingelhöfer ◽  
J. Perrot ◽  
R. Bartolome ◽  
M.-A. Gutscher ◽  
...  
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Seismic Data ◽  
Wide Angle ◽  
Reflection Seismic

scholarly journals Deep Structure of the North Natal Valley (Mozambique) Using Combined Wide‐Angle and Reflection Seismic Data

2021 ◽  
Vol 126 (4) ◽  
Author(s):  
A. Leprêtre ◽  
P. Schnürle ◽  
M. Evain ◽  
F. Verrier ◽  
D. Moorcroft ◽  
...  
Keyword(s):  
Seismic Data ◽  
Deep Structure ◽  
Wide Angle ◽  
Reflection Seismic ◽  
The North

The crustal structure of the Moroccan continental margin from wide-angle and reflection seismic data

2007 ◽  
Author(s):  
Frauke Klingelhoefer ◽  
Daniel Aslanian* ◽  
Cynthia Labails ◽  
Jean-Louis Olivet ◽  
Hervé Nouzé ◽  
...  
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Seismic Data ◽  
Wide Angle ◽  
Reflection Seismic

scholarly journals Crustal structure of the NE Rockall Trough from wide-angle seismic data modeling

2005 ◽  
Vol 110 (B11) ◽  
Author(s):  
F. Klingelhöfer ◽  
R. A. Edwards ◽  
R. W. Hobbs ◽  
R. W. England
Keyword(s):  
Crustal Structure ◽  
Seismic Data ◽  
Data Modeling ◽  
Wide Angle ◽  
Rockall Trough

The crustal structure of the Moroccan continental margin from wide-angle and reflection seismic data

2007 ◽  
Author(s):  
Frauke Klingelhoefer ◽  
Isabelle Contrucci ◽  
Daniel Aslanian ◽  
Cynthia Labails ◽  
Jean-Louis Olivet ◽  
...  
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Seismic Data ◽  
Wide Angle ◽  
Reflection Seismic

scholarly journals The crustal structure of the north-eastern Gulf of Aden continental margin: insights from wide-angle seismic data

2010 ◽  
Vol 184 (2) ◽  
pp. 575-594 ◽  
Author(s):  
L. Watremez ◽  
S. Leroy ◽  
S. Rouzo ◽  
E. d'Acremont ◽  
P. Unternehr ◽  
...  
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Seismic Data ◽  
Wide Angle ◽  
Gulf Of Aden ◽  
The North ◽  
North Eastern

Revealing the deep structure and rupture plane of the 2010 Maule, Chile earthquake (Mw=8.8) using wide angle seismic data

2011 ◽  
Vol 307 (1-2) ◽  
pp. 147-155 ◽  
Author(s):  
Eduardo Moscoso ◽  
Ingo Grevemeyer ◽  
Eduardo Contreras-Reyes ◽  
Ernst R. Flueh ◽  
Yvonne Dzierma ◽  
...  
Keyword(s):  
Seismic Data ◽  
Deep Structure ◽  
Wide Angle ◽  
Rupture Plane ◽  
Chile Earthquake
Sign in / Sign up

Export Citation Format

Share Document