Results 121 to 130 of about 220,175 (263)

Alteration and vein mineralisation within the Lizard complex, south Cornwall: Constraints on the timing of serpentinisation. [PDF]

open access: yes, 2013
Two distinct episodes of serpentinisation have been identified within the peridotites of the Lizard complex. The first episode (primary serpentinisation) is represented by the complex and pervasive hydration of the Lizard peridotite.
Alexander, A.C.   +3 more
core  

Hydrothermal-metasomatic processes in Santonian (Upper Cretaceous) argillaceous opoka in Western Siberia north

open access: yesOil and gas geology = Geologiya nefti i gaza, 2021
Tat'yana Karikh, Aleksandr Kudamanov
openaire   +1 more source

Application Progress on Transmission Electron Microscopy in the Research of Rare Earth Deposits

open access: yesYankuang ceshi
Transmission electron microscopy (TEM), having a remarkably high spatial resolution and diversified analysis capability, can be used to obtain very comprehensive composition, structure, and crystal chemistry of the samples under submicron-nanometer scale
Yitong XU   +6 more
doaj   +1 more source

Petrologic-geochemical evidence of geologic-genetic uniformity of gold hydrothermal deposits formed in black-shale and non-shale substratum [PDF]

open access: yes, 2007
The problem of gold deposits origin lying in crystal and black-shale substratum is discussed. The expediency of comparative research of all geologic-real-genetic factors of their formation, among which a significant value is retained by the geochemical ...
Kucherenko, I. V.
core  

Two-sided asymmetric subduction; implications for tectonomagmatic and metallogenic evolution of the Lut Block, Eastern Iran [PDF]

open access: yes, 2011
West directed subduction zones show common characteristics, such as low structural elevation, deep trench, steep slab and a conjugate back-arc basin that are opposite to those of the east directed subduction zones.
Arjmandzadeh, R.   +5 more
core   +2 more sources

Mineral chemistry of monazite-(Nd), xenotime-(Y), apatite, fluorite and zircon hosting in lamprophyre dyke in Abu Rusheid area, South Eastern Desert, Egypt

open access: yesGeologija, 2012
The studied mineralized lamprophyre dyke in Abu Rusheid area is trending NNW-SSE, and occurs withinAbu Rusheid mineralized shear zone, measuring 0.2 - 1.0 m in width and 0.5 - 1.0 km in length. It was emplacedparallel with the Abu Rusheid shear zone. The
Mohamed A. Ali
doaj  

Diamond preservation in the lithospheric mantle recorded by olivine in kimberlites. [PDF]

open access: yesNat Commun, 2023
Giuliani A   +8 more
europepmc   +1 more source

Cathodoluminescence study of secondary minerals in eucrite [PDF]

open access: yes, 2016
第7回極域科学シンポジウム:[OA] 南極隕石/はやぶさ12月1日(木)国立国語研究所 ...

core   +1 more source

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