Results 71 to 80 of about 9,445 (214)

Petrology and geochemistray of Imam-Zadeh Hashem mafic and ultramafic bodies, southern Guilan province

Journal of Economic Geology, 2013
Mafic and ultramafic plutonic igneous bodies, with small and big outcrops, between Shemshak rock units (Jurassic) are observed in east of Imam Zadeh Hashem, in southern Guilan province.
Mojgan Salavati, Reza Fahim Guilani
doaj  

Brittle‐Ductile Rheological Behavior in Subduction Zones: Effects of Strength Ratio Between Strong and Weak Phases in a Bi‐Phase System

Geophysical Research Letters
The brittle‐ductile rheological behavior in subduction zones is commonly proposed to explain deep transient slips. Generally observed at large scales in tectonic “mélanges”, here we show that it is also observed at the grain scale in exhumed blueschist ...
A. Maitre, F. Gueydan, C. Thieulot, E. Oliot   +3 more
doaj   +1 more source

Age and origin of the gabbros in the Jilotlán pluton, Jalisco: primitive magmatic rocks in the southern part of the Guerrero terrane

Revista Mexicana de Ciencias Geológicas, 2018
An outstanding feature of the Mexican Cordilleran magmatic arc between Sonora and Chiapas is the presence of numerous plutonic and batholitic bodies of Cretaceous to Miocene ages.
Daniel Villanueva-Lascurain, Gabriela Solís-Pichardo, Peter Schaaf, Teodoro Hernández-Treviño, Josué Salazar-Juárez, Pedro Corona-Chávez   +5 more
doaj   +1 more source

Petrogenesis and tectonic setting of the proto-tethyan dachaidan ophiolite, North China: insights from clinopyroxene chemistry and whole-rock Sr–Nd–Pb and zircon Hf isotopes

Frontiers in Earth Science
IntroductionThe Dachaidan ophiolites outcrop within an ultrahigh-pressure metamorphic belt along the northern margin of the Qaidam Basin. However, their age, source, and tectonic setting remain still in debate.MethodIn this study, we investigated the ...
Yilin Qu, Yilin Qu, Xijun Liu, Xijun Liu, Xijun Liu, Xijun Liu, Xiao Liu, Xiao Liu, Xiao Liu, Qianwen Huang, Qianwen Huang, Qijun Yang, Rongguo Hu, Rongguo Hu, Rongguo Hu, Pengde Liu, Yujia Song   +16 more
doaj   +1 more source

Element composition of amphiboles from gabbroic rocks of the Tiger Gabbro complex, Spatulate Ridge and Apostrophe Island, Antarctica

, 2014
Element composition of amphiboles from gabbroic rocks of the Tiger Gabbro complex, Spatulate Ridge and Apostrophe Island ...
Kosanke, Dominique, Glen Phillips (2845310), Estrada, Solveig, Phillips, Glen, Henjes-Kunst, Friedhelm, Dominique Kosanke (6960266), Andreas L Läufer (6960260), Solveig Estrada (6960263), Friedhelm Henjes-Kunst (6960254), Koepke, Jürgen, Jürgen Koepke (6960257), Piepjohn, Karsten, Karsten Piepjohn (4036178), Läufer, Andreas   +13 more
core   +1 more source

The Ultramafites and layered Gabbro Sequences

, 1963
On Stjernöy, Seiland and the neighbouring peninsulas of Öksfjord and Bergsfjord ultramafic bodies of peridotite and pyroxenite with associated layered gabbro sequences occur within a complex of highly metamorphic gabbro gneisses, rocks akin to pyroxene ...
Oosterom, M.G.
core  

The Use of Gabbro Rock Armour in Rubble Mound Structures

, 2000
Throughout several years Gabbro rocks have been used for various coast protective constructions and breakwaters at the North Sea Coast and in inner Danish waters.
Frigaard, Peter, Beck, J. Blow, Burcharth, H. F., Danielsen, S. W., Helgason, Einar   +4 more
core  

Zircon U-Pb dating, mineralogy and geochemical characteristics of the gabbro and gabbro-diorite bodies, Boein–Miandasht, western Iran

, 2019
The Boein–Miandasht Complex (BMC) is a part of the Sanandaj–Sirjan metamorphic basement and is cut by gabbroic to granitoid bodies. These intrusive bodies comprise gabbro, gabbro–diorite associated with fine-grained, in part porphyritic leucocratic ...
Neda Tavakoli (6414950), Nahid Shabanian (6414956), Hossein Azizi (778332), Manfred Bernroider (6414965), Yoshihiro Asahara (6414962), Ali Reza Davoudian (6414953), Franz Neubauer (6414959)   +6 more
core   +1 more source

Analysis of structural features and geometrization of qualitative properties of gabbroic rocks of the eastern part of the Volodarsk-Volynskyi massif of basic rocks of the Korosten pluton

Технічна інженерія
The paper deals with the geometrization of gabbroids of the eastern part of the Volodarsk-Volynskyi massif of basic rocks of the Korosten pluton on the basis of determining the spatial location, structure and interrelations of crystalline rock types. The
A.O. Kryvoruchko, V.V. Kotenko, S.A. Horshkalov, H.V. Brui   +3 more
doaj   +1 more source

GEOCHRONOLOGY OF ALKALINE ROCKS FROM THE BURPALA MASSIF (NORTHERN PRIBAIKALYE): NEW U-Pb DATA

Геодинамика и тектонофизика
Geochronological studies have been made on the main types of rocks from the Burpala alkaline massif and two gabbro and gabbro-diorite dikes located nearby.
I. А. Izbrodin, А. G. Doroshkevich, А. V. Malyutina, D. V. Semenova, Т. А. Radomskaya, М. N. Kruk, I. R. Prokopyev, А. Е. Starikova, М. О. Rampilov   +8 more
doaj   +1 more source