Results 1 to 10 of about 3,761 (192)

New magnetic anomaly map for the Red Sea reveals transtensional structures associated with rotational rifting [PDF]

open access: yesScientific Reports, 2022
The Red Sea is a modern analogue for studying continental break-up. Particularly, the Red Sea shows along-strike variability in the architecture, magmatism and associated style of rifting.
Ran Issachar   +2 more
doaj   +2 more sources

A precise late Permian 40Ar/39Ar age for Central Iberian camptonitic lamprohyres [PDF]

open access: yesGeologica Acta, 2006
The Avila batholith of central Spain is composed, predominantly, of crustal-melt peraluminous granites cut by small-scale mafic alkaline bodies. Dating of the Gredos sector mafic camptonitic lamprophyre dykes was undertaken to constrain the Late Variscan
J.H. SCARROW   +4 more
doaj   +6 more sources

The tectonic puzzle of the Messina area (Southern Italy): insights from new seismic reflection data. [PDF]

open access: yesSci Rep, 2012
The Messina Strait, that separates peninsular Italy from Sicily, is one of the most seismically active areas of the Mediterranean. The structure and seismotectonic setting of the region are poorly understood, although the area is highly populated and ...
Doglioni C   +10 more
europepmc   +3 more sources

Timing of syn-orogenic, high-grade transtensional shear zone formation in the West Uusimaa Complex, Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2022
We present zircon and titanite U-Pb ages from granulite-facies transtensional shear zones and a greenschist facies strike-slip shear zone in the Karkkila-Vihti area, West Uusimaa. The zircon rim and titanite ages of c.
Taija Torvela, Matti Kurhila
doaj   +1 more source

Gas Emissions in a Transtensile Regime Along the Western Slope of the Mid-Okinawa Trough

open access: yesFrontiers in Earth Science, 2021
Gas emissions from the seabed are favored by tectonically active settings and their distribution is often linked to the nearby faults. Here we use the multi-beam echo-sounder (MBES) and the multi-channel seismic (MCS) data and a sediment core to show ...
Ang Li   +17 more
doaj   +1 more source

Transpression and transtension zones [PDF]

open access: yesGeological Society, London, Special Publications, 1998
Abstract Transpression and transtension are strike-slip deformations that deviate from simple shear because of a component of, respectively, shortening or extension orthogonal to the deformation zone. These three-dimensional non-coaxial strains develop principally in response to obliquely convergent or divergent relative motions ...
J. F. Dewey   +2 more
openaire   +1 more source

FAULT SYSTEMS IN THE UPPER CRUST OF THE FENNOSCANDIAN SHIELD, THE EAST EUROPEAN PLATFORM

open access: yesГеодинамика и тектонофизика, 2020
Directions of 683 faults located in the southeastern part of the Fennoscandian (Baltic) shield were statistically analyzed, and three orthogonal associations of fault systems were identified in the study area.
V. S. Burtman, S. Yu. Kolodyazhny
doaj   +1 more source

The dynamics of laterally variable subductions: laboratory models applied to the Hellenides [PDF]

open access: yesSolid Earth, 2013
We designed three-dimensional dynamically self-consistent laboratory models of subduction to analyse the relationships between overriding plate deformation and subduction dynamics in the upper mantle.
B. Guillaume   +3 more
doaj   +1 more source

Influence of regional tectonics and pre-existing structures on the formation of elliptical calderas in the Kenyan Rift [PDF]

open access: yes, 2015
Calderas are formed by the collapse of large magma reservoirs and are commonly elliptical in map view. The orientation of elliptical calderas is often used as an indicator of the local stress regime; but, in some rift settings, pre-existing structural ...
Biggs, J.   +4 more
core   +6 more sources

FIELD TECTONOPHYSICS IN SOLUTIONS OF GEODYNAMIC EVOLUTION PROBLEMS OF THE UKRAINE TERRITORY

open access: yesГеодинамика и тектонофизика, 2015
The integrated approach combining kinematic and structural-paragenetic field tectonophysics techniques allows us to construct a continuous time scan of the stress-strain state (SSS) and deformation modes (DM) from sediment lithification to the final ...
O. B. Gintov   +2 more
doaj   +1 more source

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