scholarly journals Marine Geophysical Investigation of the Chain Fracture Zone in the Equatorial Atlantic From the PI‐LAB Experiment

2018 ◽  
Vol 123 (12) ◽  
Author(s):  
Nicholas Harmon ◽  
Catherine Rychert ◽  
Matthew Agius ◽  
Saikiran Tharimena ◽  
Tim Le Bas ◽  
...  
Keyword(s):  
Fracture Zone ◽  
Equatorial Atlantic ◽  
Lab Experiment ◽  
Geophysical Investigation

Lower Cretaceous to Eocene sedimentary transverse ridge at the Romanche Fracture Zone and the opening of the equatorial Atlantic

2001 ◽  
Vol 176 (1-4) ◽  
pp. 101-119 ◽  
Author(s):  
L Gasperini ◽  
D Bernoulli ◽  
E Bonatti ◽  
A.M Borsetti ◽  
M Ligi ◽  
...  
Keyword(s):  
Fracture Zone ◽  
Lower Cretaceous ◽  
Equatorial Atlantic ◽  
Transverse Ridge ◽  
Romanche Fracture Zone

scholarly journals Seismic Crustal Structure and Morphotectonic Features Associated With the Chain Fracture Zone and Their Role in the Evolution of the Equatorial Atlantic Region

2020 ◽  
Vol 125 (10) ◽  
Author(s):  
Milena Marjanović ◽  
Satish C. Singh ◽  
Emma P. M. Gregory ◽  
Ingo Grevemeyer ◽  
Kevin Growe ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Fracture Zone ◽  
Equatorial Atlantic ◽  
Atlantic Region

Transform migration and vertical tectonics at the Romanche fracture zone, equatorial Atlantic

1994 ◽  
Vol 99 (B11) ◽  
pp. 21779-21802 ◽  
Author(s):  
E. Bonatti ◽  
M. Ligi ◽  
L. Gasperini ◽  
A. Peyve ◽  
Y. Raznitsin ◽  
...  
Keyword(s):  
Fracture Zone ◽  
Equatorial Atlantic ◽  
Romanche Fracture Zone

Mapping of a segment of the Romanche Fracture Zone: A morphostructural analysis of a major transform fault of the equatorial Atlantic Ocean

Geology ◽  
1991 ◽  
Vol 19 (8) ◽  
pp. 795 ◽  
Author(s):  
José Honnorez ◽  
Jean Mascle ◽  
Christophe Basile ◽  
Pierre Tricart ◽  
Michel Villeneuve ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Fracture Zone ◽  
Transform Fault ◽  
Equatorial Atlantic ◽  
Equatorial Atlantic Ocean ◽  
Romanche Fracture Zone

scholarly journals The Vema fracture zone in the equatorial Atlantic

1964 ◽  
Vol 69 (4) ◽  
pp. 733-739 ◽  
Author(s):  
Bruce C. Heezen ◽  
R. D. Gerard ◽  
Marie Tharp
Keyword(s):  
Fracture Zone ◽  
Equatorial Atlantic

Termination of a fossil continent-ocean fracture zone imaged with three-dimensional seismic data: The Chain Fracture Zone, eastern equatorial Atlantic

Geology ◽  
2005 ◽  
Vol 33 (8) ◽  
pp. 641 ◽  
Author(s):  
Richard J. Davies ◽  
Christopher J. MacLeod ◽  
Richard Morgan ◽  
Sepribo E. Briggs
Keyword(s):  
Fracture Zone ◽  
Seismic Data ◽  
Three Dimensional ◽  
Equatorial Atlantic

Evidence for Recycled Crustal Material Within the Upper Mantle Beneath the St Paul Fracture Zone, Equatorial Atlantic

2003 ◽  
Author(s):  
Christophe Hemond ◽  
Antoine Le Faouder ◽  
Claire Bassoullet ◽  
Thierry Juteau ◽  
Susanna Sichel
Keyword(s):  
Fracture Zone ◽  
Upper Mantle ◽  
Crustal Material ◽  
Equatorial Atlantic

Termination of a fossil continent-ocean fracture zone imaged with three-dimensional seismic data: The Chain Fracture Zone, eastern equatorial Atlantic

Geology ◽  
2005 ◽  
Vol 33 (8) ◽  
pp. 641-644 ◽  
Author(s):  
Richard J. Davies ◽  
Christopher J. MacLeod ◽  
Richard Morgan ◽  
Sepribo E. Briggs
Keyword(s):  
Oceanic Crust ◽  
Fracture Zone ◽  
Niger Delta ◽  
Three Dimensional ◽  
Seafloor Spreading ◽  
Spreading Center ◽  
Equatorial Atlantic ◽  
Half Graben ◽  
History Of ◽  
Subsequent Phase

Abstract We describe the first three-dimensional imaging of the termination of a continent-ocean fracture zone (COFZ), the Chain Fracture Zone, located offshore of the Niger Delta. The COFZ marks the abrupt transition between extended continental crust, comprising multiple half-graben, and oceanic crust that has a pervasive seafloor-spreading fabric. It preserves a history of continent-continent shearing followed by oceanic crust accretion and continent-ocean shearing during the inception of Atlantic rifting. The termination is marked by steeply dipping faults with sigmoidal planform and thrusts that probably formed as a result of continent-continent or continent-ocean shearing. These are crosscut by the seafloor-spreading fabric that formed during the subsequent phase of oceanic crust accretion. The accreted oceanic crust is cut by listric and planar faults that curve in the direction of the COFZ, where they terminate. The transition from continental to oceanic crust across the COFZ is sharp and resolvable to ∼100–200 m. Complexes of lava flows emanate from volcanoes along the COFZ, bifurcating and trifurcating down the volcano flanks. The volcanoes are 2–5.5 km wide and 1.4 km in height relative to adjacent oceanic crust and were injected at the COFZ, probably as the spreading center migrated along it.

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