Results 61 to 70 of about 39,455 (187)

Investigating the Antarctic Lithosphere Through Sp Receiver Function Analysis

open access: yesGeochemistry, Geophysics, Geosystems
To better understand the lithosphere of Antarctica, we imaged its lithosphere‐asthenosphere boundary (LAB) and crust‐mantle transition using Sp receiver functions from teleseismic events analyzed at individual stations and with common conversion point ...
Sarah E. Brown, Karen M. Fischer
doaj   +1 more source

Geodynamic conditions of rifting on the Earth surface: problems of studying

open access: yesГеодинамика и тектонофизика, 2017
Rift structures are considered as elements of the composite structural parageneses of deformations in the crust and lithosphere with respect to kinematic types of such deformations.
T. Yu. Tveritinova
doaj   +1 more source

Continental breakup and UHP rock exhumation in action: GPS results from the Woodlark Rift, Papua New Guinea [PDF]

open access: yes, 2015
We show results from a network of campaign Global Positioning System (GPS) sites in the Woodlark Rift, southeastern Papua New Guinea, in a transition from seafloor spreading to continental rifting. GPS velocities indicate anticlockwise rotation (at 2–2.7°
Ellis, Susan   +9 more
core   +1 more source

ACADEMICIAN N.A. LOGATCHEV AND HIS SCIENTIFIC SCHOOL: CONTRUBITION TO STUDIES OF THE CENOZOIC CONTINENTAL RIFTING

open access: yesГеодинамика и тектонофизика, 2015
N.A. Florensov and N.A. Logatchev pioneered development of fundamental concepts of the structure and evolution of the Baikal system of rift basins. At the turn to the 21st century, in view of the wide availability of scientific research data on the ...
Sergey V. Rasskazov   +5 more
doaj   +1 more source

Sedimentation of the Lower Cretaceous Xiagou formation and Its Response to Regional Tectonics in the Qingxi Sag, Jiuquan Basin, NW China [PDF]

open access: yes, 2014
Under the constraint of an isochronous sequence stratigraphic framework, sediment infill of the Xiagou Formation reflects the overall control of dynamic tectonic movements and episodic sedimentations in the Qingxi Sag.
Chen, Si   +5 more
core   +1 more source

When do we need pan-global freeze to explain ^(18)O-depleted zircons and rocks? [PDF]

open access: yes, 2011
Rocks with δ^(18)O values of less than 5‰ SMOW (Standard Mean Ocean Water) contain oxygen derived from ∼0‰ seawater or meteoric (rain or melted snow,
Bindeman, Ilya
core   +1 more source

Granitoids of the Ufaley Block: Geodynamic environments, age, sources, problems

open access: yesЛитосфера, 2016
There are complex of data about composition, age, isotopic parameters for granites from the Ufaley block, which is situated in the accretion zone on the boundary between the Urals and the East European platform.
G. Yu. Shardakova
doaj   +2 more sources

Deep structure and sources of magnetic anomalies in the South Tatar basin (Tatar Strait, Japanese Sea)

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
The results of structural-density modeling along the profile crossing structures in the southern part of the South Tatar basin located in the Tatar Strait in the north of the Sea of Japan are presented.
Z.N. Proshkina   +2 more
doaj   +1 more source

Breakup Without Borders: How Continents Speed Up and Slow Down During Rifting

open access: yesGeophysical Research Letters, 2019
Relative plate motions during continental rifting result from the interplay of local with far‐field forces. Here we study the dynamics of rifting and breakup using large‐scale numerical simulations of mantle convection with self‐consistent evolution of ...
Martina M. Ulvrova   +2 more
doaj   +1 more source

Ductility and Compressibility Accommodate High Magma Flux Beneath a Silicic Continental Rift Caldera: Insights From Corbetti Caldera (Ethiopia)

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Large silicic magma reservoirs preferentially form in the upper crust of extensional continental environments. However, our quantitative understanding of the link between mantle magmatism, silicic reservoirs, and surface deformation during rifting is ...
J. Gottsmann   +4 more
doaj   +1 more source

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