Results 101 to 110 of about 12,638 (229)

Hot spot abundance, ridge subduction and the evolution of greenstone belts [PDF]

A number of plate tectonic hypotheses have been proposed to explain the origin of Archaean and Phanerozoic greenstone/ophiolite terranes. In these models, ophiolites or greenstone belts represent the remnants of one or more of the following: island arcs,
Abbott, D., Hoffman, S.
core   +1 more source

Ophiolites of Japan.

Journal of Geography (Chigaku Zasshi), 1989
The Japanese ophiolites are divided into nappe type and melange type by their occurrences. The nappe type formed in a short period (a few 10Ma), and emplaced shortly after its igneous formation keeping its original igneous stratigraphy. They generally escaped from post-emplacement, high-pressure metamorphism. The melange type is a mixture of ophiolitic
openaire   +2 more sources

Application of imaging spectrometer data to the Kings-Kaweah ophiolite melange [PDF]

The Kings-Kaweah ophiolite melange in east-central California is thought to be an obducted oceanic fracture zone and provides the rare opportunity to examine in detail the complex nature of this type of terrain.
Mustard, John F., Pieters, Carle M.
core   +1 more source

Ophiolites of Mariinsky complex at east and west frames of Revdinsky Massif

Литосфера, 2016
Fragments of the ophiolites of the Mariinsky complex of eastern and western framing of the Revdinskiy massif have been compared. At the eastern framing rocks of Mariinsky complex are main dolerites of sheeted dike complex, whch intruded basaltic pillow ...
S. V. Berzin
doaj   +2 more sources

The rock components and structures of Archean greenstone belts: An overview [PDF]

Knowledge of the character and evolution of the Earth's early crust is derived from the studies of the rocks and structures in Archean greenstone belts.
Byerly, G. R., Lowe, D. R.
core   +1 more source

The boundary between the Central Asian Orogenic belt and Tethyan tectonic domain deduced from Pb isotopic data [PDF]

, 2015
Castillo, Paterno R, Feng, Zuohai, Huo, Qiye, Liu, Xijun, Shi, Yu, Wang, Shuqing, Xiao, Wenjiao, Xu, Jifeng   +7 more
core   +1 more source

Microstructural features of chromitites and ultramafic rocks of the Almaz-Zhemchuzhina deposit (Kempirsai massif, Kazakhstan) according to electron backscatter diffraction (EBSD) studies

Записки Горного института
Microstructural features of the main rock-forming minerals of host ultramafic rocks (olivine, orthopyroxene) and chrome spinel from ores of the Almaz-Zhemchuzhina deposit were studied using the electron backscatter diffraction method.
Dmitrii E. Saveliev, Semen N. Sergeev, Darkhan K. Makatov   +2 more
doaj  

The Shalap Mélange of the Salairian Alambay Ophiolite Zone (Northwestern Central Asian Orogenic Belt), Geological Structure and Compositional Features of Amphibolites and Greenstone Basalts

Геодинамика и тектонофизика
The Alambay ophiolite zone (AOZ) is located in the axial part of the Early Paleozoic Salair orogen and includes the northern extension of the Alambay-Kaim zone, Salair and Altai Mountains.
F. I. Zhimulev, A. V. Kotlyarov, A. V. Travin, M. A. Fidler, A. A. Khuurak   +4 more
doaj   +1 more source

NEW DATA ON THE AGE AND COMPOSITION OF OPHIOLITES FROM THE KABAK-TAIGA MASSIF (GORNY ALTAI)

Геодинамика и тектонофизика
The combination of newly obtained geological, petrological and geochronological data on the rocks from the Kabak-Taiga ophiolite massif of the Gorny Altai and already published materials on similar characteristics of the ophiolites from Tuva allows us to
V. D. Zindobryi, M. M. Buslov, A. V. Kotlyarov   +2 more
doaj   +1 more source

A magnetic survey of mineral resources in northeastern Cuba [PDF]

Geofísica Internacional, 2006
Interpretation of the aeromagnetic survey of northeastern Cuba at scale 1 50 000 is presented. Mainly ophiolitic rocks are characterized by a high magnetic response. The aeromagnetic data was reduced to the pole and the horizontal and vertical gradients,
José Alberto Batista Rodríguez
doaj