Results 71 to 80 of about 9,924 (222)

A multidisciplinary investigation of the Notträsk Gabbro, northern Sweden

, 1985
The differentiated, sulfide-bearing gabbro near the city of Boden in northern Sweden has been investigated in order to get a plausible model for its formation, shape and age.
Elming, Sten-åke,, Enmark, Thomas, Widenfalk, Lennart   +2 more
core   +1 more source

The Sooke gabbro

, 1973
The geology of the East Sooke peninsula comprises a core of olivine gabbro, peripherally uralitized and bounded on the north and east by upper Eocene Metchosin basalts of submarine origin.
Mitchell, William Sutherland
core   +1 more source

Two types of gabbroic xenoliths from rhyolite dominated Niijima volcano, northern part of Izu-Bonin arc: petrological and geochemical constraints

Open Geosciences, 2017
We examined the petrography, petrology, and geochemistry of two types of gabbroic xenoliths (A- and B-type xenoliths) in olivine basalt and biotite rhyolite units among the dominantly rhyolitic rocks in Niijima volcano, northern Izu-Bonin volcanic arc ...
Arakawa Yoji, Endo Daisuke, Ikehata Kei, Oshika Junya, Shinmura Taro, Mori Yasushi   +5 more
doaj   +1 more source

Odd Blobs in Fine-Grained Gabbro

, 2019
Clayters Beach - Granite-gabbro mixing zone.https://digitalmaine.com/mgs_geologic_field_photos/6164/thumbnail ...
Marvinney, Robert G
core  

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  

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

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

Clayters Beach - Granite-gabbro magma mixing

, 2019
Clayters Beach - Granite-gabbro magma mixinghttps://digitalmaine.com/mgs_geologic_field_photos/6154/thumbnail ...
Marvinney, Robert G
core  

Gabbro Dike Mt. Moxie - top (Doyle)

, 2019
Gabbro Dike Mt.

core   +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