scholarly journals Detection of and response to a probable volcanogenic T-wave event swarm on the Western Blanco Transform Fault Zone

1996 ◽  
Vol 23 (8) ◽  
pp. 873-876 ◽  
Author(s):  
R. P. Dziak ◽  
C. G. Fox ◽  
R. W. Embley ◽  
J. E. Lupton ◽  
G. C. Johnson ◽  
...  
Keyword(s):  
Fault Zone ◽  
Transform Fault ◽  
T Wave ◽  
Wave Event ◽  
Blanco Transform Fault Zone ◽  
Transform Fault Zone

scholarly journals The 2014 Kefalonia Doublet (MW6.1 and MW6.0), Central Ionian Islands, Greece: Seismotectonic Implications along the Kefalonia Transform Fault Zone

2015 ◽  
Vol 63 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Vassilios Karakostas ◽  
Eleftheria Papadimitriou ◽  
Maria Mesimeri ◽  
Charikleia Gkarlaouni ◽  
Parthena Paradisopoulou
Keyword(s):  
Fault Zone ◽  
Transform Fault ◽  
Ionian Islands ◽  
Transform Fault Zone

scholarly journals On the Segmentation of the Cephalonia–Lefkada Transform Fault Zone (Greece) from an InSAR Multi-Mode Dataset of the Lefkada 2015 Sequence

2019 ◽  
Vol 11 (16) ◽  
pp. 1848
Author(s):  
Nikos Svigkas ◽  
Simone Atzori ◽  
Anastasia Kiratzi ◽  
Cristiano Tolomei ◽  
Andrea Antonioli ◽  
...  
Keyword(s):  
Fault Zone ◽  
Surface Displacement ◽  
Interferometric Synthetic Aperture Radar ◽  
Transform Fault ◽  
Earthquake Relocation ◽  
The North ◽  
Available Information ◽  
Multi Mode ◽  
Additional Constraints ◽  
Transform Fault Zone

We use Interferometric Synthetic Aperture Radar (InSAR) to study the Cephalonia–Lefkada Transform Fault Zone (CTF) in the Ionian Sea. The CTF separates continental subduction to the north from oceanic subduction to the south, along the Hellenic Subduction Zone. We exploit a rich multi-modal radar dataset of the most recent major earthquake in the region, the 17 November 2015 Mw 6.4 event, and present new surface displacement results that offer additional constraints on the fault segmentation of the area. Based on this dataset, and by exploiting available information of earthquake relocation, we propose a new rupture process for the 2015 sequence, complementary to those published already. Our modelling includes an additional southern fault segment, oblique to the segment related with the mainshock, which indicates that the CTF structure is more complex than previously believed.

Petrology of a transform fault zone and adjacent ridge segments

1971 ◽  
Vol 268 (1192) ◽  
pp. 423-441 ◽  
Keyword(s):  
Oceanic Crust ◽  
Fault Zone ◽  
Fracture Zone ◽  
Volcanic Eruptions ◽  
Spreading Ridge ◽  
Transform Fault ◽  
Transform Faults ◽  
Near Surface ◽  
The North ◽  
Transform Fault Zone

The Verna Fracture Zone in the North Atlantic (9 to 11° N), which has been identified as a transform fault zone, contains exposures of serpentinized peridotites, while its adjacent ridge segments are floored mainly by typical abyssal ocean ridge basalts. This petrologic contrast correlates with the greater frequency of volcanic eruptions along the actively spreading ridge segments compared to the transform fault zone. Where rifting components occur across transform faults, exposures of the deeper zone of oceanic crust may result. The bathymetry of the Verna Fracture Zone suggests that some uplift parallel to the fracture zone as well as rifting led to exposures of deeper rocks. The basalts from the adjacent ridge axes contain ‘xenocrysts’ of plagioclase and olivine and more rarely of chromite. These appear to have a cognate origin, perhaps related to cooling and convection in near surface magma chambers. The basalts from the ridge axes, offset and on opposite sides of the transform fault, have similar features and compositions. The plagioclase peridotites have mineralogical features which indicate equilibration in the plagioclase pyrolite facies, suggesting maximum equilibration depths of around 30 km for a temperature of around 1200 °C. The chemical characteristics of the Vema F.Z. peridotites suggest that they may be undifferentiated mantle, emplaced as a subsolidus hot plastic intrusion or as a crystal mush. The abundance of peridotites and serpentinized peridotites is believed to reflect their abundance in seismic layer three of the oceanic crust.

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