The garnet amphibolite schist is associated with the gabbroic unit of Mawat ophiolite, Kurdistan region, Northeast Iraq, in imbricated zone Zagros orogenic belt. Field observation, petrographic study, mineral chemistry, geochemical data, and thermodynamic modeling were used to demonstrate identification, predict observed stable assemblages, validate protolith. assemblages prograde are (pyrope-a...

Abstract The mechanical properties of the deep rock are impacted not only by complicated stress environment but also mineral composition. To reveal relationship between development characteristics and acoustic emission signals in evolution rocks, metagabbros with different feldspar were subjected to tests under hydraulic coupling. characteristic parameter their correlation investigated. results...

The chemical, morphological and mineralogical properties of two Enon sandy loam (fine, mixed, thermic Ultic Hapludalfs) soilsaprolite profiles, one formed on gabbro and the other on metagabbro, are compared. Clay skins are scarce and stress cutans common in the argillic horizons of these soils. Iron-manganese concretions are concentrated in soil horizons immediately above the argillic horizons....

We investigated the shear strain field ahead of a supershear rupture. The strain array data along the sliding fault surfaces were obtained during the large-scale biaxial friction experiments at the National Research Institute for Earth Science and Disaster Resilience. These friction experiments were done using a pair of meter-scale metagabbro rock specimens whose simulated fault area was 1.5 m ...

The Neoproterozoic rocks of the Bir Madi area, south Eastern Desert, comprise a metagabbrodiorite complex (GDC) and a tonalite-granodiorite suite (TGrS). The GDC has a weak tholeiitic to strong calc-alkaline character and is made up of olivine gabbro, hornblende gabbro, diorite and monzodiorite. The olivine gabbro is characterized by abundance of augite and labradorite with pseudomorphic serpen...

INTRODUCTION The rocks on the Greek island of Syros are part of a suite of high pressure metamorphic rocks which outcrop all across the Cyclades. There is a complex metamorphic history recorded in the rocks here, including a Cretaceous or Eocene high-pressure blueschist event and a Miocene, extension-related greenschist overprint. The Island of Syros is mostly composed of schists , which altern...

metagabbro, metadiabase and metabasalt of the chah palang and me'raji mountains associated with lower paleozoic metamorphites are situated in the south of arousan. metabasites of these areas are relatively similar in terms of mineralogy and geochemical characteristics. rock-forming minerals of the me'raji metabasites are feldspar, amphibole, biotite, sphene, epidote, chlorite ± calcite. metagab...