Results 81 to 90 of about 14,747 (240)

Near‐Synchronous Cambrian Evolution of the Transbrasiliano‐Kandi‐4°50′ Shear Zone in South America and Africa

Terra Nova, EarlyView.
ABSTRACT The Transbrasiliano‐Kandi‐4°50′ (TK4) shear zone in western Gondwana crosscuts South America and NW Africa for at least 6000 km. Despite its impressive size, the timing of the main episode of dextral ductile shearing is uncertain. We present detailed in situ multi‐mineral geochronology of mylonites from both Brazil and Algeria supporting that ...
F. A. Caxito, B. V. Ribeiro, F. Alkmim, A. Deramchi, C. L. Kirkland   +4 more
wiley   +1 more source

Permian-Triassic basalts from basement of the West Siberian basin from superdeep hole Yen-Yakhinskayа SG-7

Литосфера, 2016
For the first time detailed mineralogical research of the Permo-Triassic basalt core samples of Yen-Yakhinskaya superdeep hole SG-7 from the depths of 7673 m, 8009 m and 8250 m was carried. The composition of minerals investigated.
S. V. Berzin, K. S. Ivanov, M. V. Zaitseva   +2 more
doaj  

Dating C/S Structures in Syntectonic Granites by In Situ Rb‐Sr Analyses on Muscovite

Terra Nova, EarlyView.
ABSTRACT The interplay of crystallisation, deformation and fluid–rock interactions makes deciphering geochronological information complex in syntectonic granites. In this study, we apply in situ Rb‐Sr analyses to selected samples from the Questembert Variscan syntectonic granite in Western France, which was emplaced along the South Armorican Shear Zone
Philippe Boulvais, Romain Tartèse
wiley   +1 more source

3D Quantification of Subsidence During Pyrenean Retro‐Wedge Initiation: Role of Structural and Thermal Inheritance on Hyperextended Margin Inversion (Aquitaine Basin)

Terra Nova, EarlyView.
ABSTRACT We present novel 3D subsidence data enabling vertical movements' quantification during the early formation of the Pyrenean retro‐wedge. From Cenomanian to Turonian times, subsidence is relatively low (~26 ± 10 m/Myr), corresponding to a brief 10 Myr thermal re‐equilibration of the European lithosphere following the hyperextended rift episode ...
Benoit Issautier, Nicolas Saspiturry, Paul Angrand, Eric Lasseur, Simon Andrieu, Cécile Robin   +5 more
wiley   +1 more source

Deformation and metamorphism of the Aileu formation, East Timor [PDF]

, 2023
RF Berry
openalex   +1 more source

Zircon trace-element and isotopes (U-Pb, Lu-Hf, δ¹⁸O) response to fluid-deficient metamorphism of a subducted continental terrane (North Muya, Eastern Siberia)

, 2023
S. Yu. Skuzovatov, Kuo‐Lung Wang, Xian‐Hua Li, Yoshiyuki Iizuka, V. S. Shatsky   +4 more
openalex   +1 more source

Suevite breccia of the Ries impact crater, Germany: Petrography, chemistry and shock metamorphism of crystalline rock clasts [PDF]

, 1997
Wolf von Engelhardt
openalex   +1 more source

Metamorphism, P-T-t Conditions of Formation, and Prospects for the Practical Use of Al₂SiO₅ Polymorphs, Chloritoid, and Staurolite (Yenisei Ridge) [PDF]

, 2017
П. С. Козлов
openalex   +1 more source

Radiation characteristics of coals at different stages of metamorphism

Записки Горного института
The formation of deposits and subsequent metamorphic processes that affect concentrations of radioactive elements in coal can indicate ongoing geological activities, therefore, analyzing trends in the radiation characteristics of coal throughout the ...
Nadezhda L. Aluker, Boris P. Aduev, Denis R. Nurmukhametov   +2 more
doaj  

Ophiolite Metamorphism and Ocean-Floor Metamorphism.

Journal of Geography (Chigaku Zasshi), 1995
Ophiolites of primary igneous origin have been more or less modified by later metamorphic processes, and there are several types of ophiolite metamorphism such as (1) the low-pressure type as recognized in ophiolites of the Mediterranean, Alps, Oman, Newfoundland, Chile, Taiwan, Borneo, California Coast Range, Hidaka Western Zone, and Horokanai, (2 ...
Hideo ISHIZUKA, Satoko SUZUKI
openaire   +2 more sources