Results 71 to 80 of about 69,547 (334)

Geochemical characteristics of apatite in metabasic rocks under different metamorphic conditions: a case study from the Paleoproterozoic Trans-North China Orogen

open access: yesDizhi lixue xuebao
Objective  Apatite is a common accessory mineral that is widely distributed in various rock types. Its U-Pb age, trace elements (particularly REE, Th, U, and Sr), and Sr-Nd isotopic compositions provide important information on its chronology and ...
YANG Yuqing   +6 more
doaj   +1 more source

Characterization of Basement Fracture Reservoir In Field ‘X’, South Sumatera Basin, Based On The Analysis of Core And FMI Log

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2017
Basement reservoir is a reservoir that is located in the basement rock, comprised of either igneous rock or metamorphic rock that has secondary porosity, resulting in its capability to store oil and gas.
Hartawi Riskha   +3 more
doaj   +1 more source

Earth's middle age [PDF]

open access: yes, 2014
This research was funded through Natural Environment Research Council (grant NE/J021822/1) and the APC was paid through the RCUK OA block grant.Earth's middle age, extending from 1.7 to 0.75 Ga, was characterized by environmental, evolutionary, and ...
Cawood, Peter Anthony   +1 more
core   +1 more source

Metamorphism of rocks and rock flowage

open access: yesGeological Society of America Bulletin, 1897
At head of title: Bulletin of the Geological Society of America, vol. 9, May 19, 1898. ; Caption-title. ; Mode of access: Internet.
openaire   +3 more sources

Petrogenetic and geochemical characteristics of some auriferous granitoids in the Kumasi Basin, Ghana: Implications for geodynamic settings and controls of orogenic gold mineralization in the Edikan Gold Mine

open access: yesDeep Underground Science and Engineering, EarlyView.
The Fobinso granitoids are granodiorites, while the Esuajah granitoids are granites based on their mineralogical composition. The granitoids are generally enriched in LILE and LREE than HFSE, MREE, and HREE, indicating mixing with crustal sources during their evolution.
Emmanuel D. Sunkari   +2 more
wiley   +1 more source

Calc-silicate rocks and marbles from Lutzow-Holm Complex,East Antarctica, with special reference to the mineralogy and geochemical characteristics of calc-silicate mega-boudins from Rundvagshetta [PDF]

open access: yes, 2006
We report here the mode of occurrence of calc-silicate rocks and marbles from the Lutzow-Holm Complex, East Antarctica, and a worked example from Rundvagshetta.
M. Satish-Kumar   +4 more
core   +1 more source

Primary crustal melt compositions: Insights into the controls, mechanisms and timing of generation from kinetics experiments and melt inclusions [PDF]

open access: yes, 2017
We explore the controls, mechanisms and timing of generation of primary melts and their compositions, and show that the novel studies of melt inclusions in migmatites can provide important insights into the processes of crustal anatexis of a particular ...
Acosta-Vigil, Antonio   +6 more
core   +1 more source

Experimental and constitutive modeling investigations on marble in Jinping Underground Laboratory

open access: yesDeep Underground Science and Engineering, EarlyView.
The objective of this study is to reveal the underlying mechanisms behind the brittle‐ductile transition of the marble through a combination of experimental research and constitutive modeling. A series of triaxial compression and triaxial cyclic loading tests are conducted.
Susheng Wang   +3 more
wiley   +1 more source

Manganese‐Incorporated Single‐Phase High‐Entropy Oxide Modified Separator Enabled High Performance of Lithium‐Sulfur Batteries at High Sulfur Loading

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study focuses on the fabrication of manganese‐infused high entropy oxides (HEOs) for lithium–sulfur (Li–S) batteries. Incorporating a HEO‐coated Celgard separator at a low material loading (~0.23 mg cm−2), it decreases the HEO content in sulfur composite cathodes, enhancing the catalytic conversion of lithium polysulfides.
Hassan Raza   +10 more
wiley   +1 more source

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