Results 11 to 20 of about 761 (228)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+23 more sources

ACCESSORY GOLD-SILVER MINERALIZATION FROM CHROMITITES OF KHARCHERUZ ULTRAMAFIC MASSIF (THE POLAR URALS)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2021
The relevance of the work is caused by weakly elaboration of mineralogical aspects of ultramafic restitic massifs, which does not allow their generalization at mineralogical level and restoration of complete history of their formation and transformation,
Alexey N. Yurichev
doaj   +1 more source

High‐Pressure Na‐Ca Carbonates in the Deep Carbon Cycle

open access: yesGeophysical Monograph Series, Page 127-136., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey Rashchenko   +2 more
wiley  

+7 more sources

Participation in the U.S. Ellsworth Mountains operation of the 1979-1980 austral summer, Antarctica

open access: yesAntarctic Record, 1981
Field activities in the Ellsworth Mountains in the 1979-1980 austral summer were supported from a temporary U.S. base camp. To study metamorphic petrology, the author mainly surveyed Marble Hills, Liberty Hills, Edison Hills, High Nunatak, and Wilson ...
Masaru Yoshida
doaj   +1 more source

Defects in olivine [PDF]

open access: yesEuropean Journal of Mineralogy, 2021
Olivine, a ferromagnesian orthosilicate, is the most abundant mineral in Earth's upper mantle and is stable down to the olivine–wadsleyite phase transition, which defines the 410 km depth mantle transition zone.
S. Demouchy
doaj   +1 more source

Genesis of silica-rich carbonatite in the Miaoya complex, Hubei Province and its implications for REE mineralization

open access: yes地质科技通报, 2023
The Miaoya complex in Hubei Province hosts one of the most important REE deposit in China. This complex is composed of syenite, carbonatite (SiO2 < 10%), and a suite of silica-rich carbonatite (SiO2>30%).
Yinqiu Hu, Bin Wu, Qian Ren
doaj   +1 more source

A review on the provenance of the Voltaian Basin, Ghana: Implications for hydrocarbon prospectivity

open access: yesScientific African, 2022
The Voltaian Basin of Ghana has taken significance as a potential oil and gas basin. Since Ghana became a petroleum-producing country, every attempt is being made to understand the sedimentary basins within the country's territorial boundaries ...
Theresa Ngmenmaaloo Zobah   +10 more
doaj   +1 more source

Petrology and mineral chemistry of peraluminous Marziyan granites, Sanandaj-Sirjan metamorphic belt (NW Iran)

open access: yesGeologica Carpathica, 2015
The Marziyan granites are located in the north of Azna and crop out in the Sanandaj-Sirjan metamorphic belt. These rocks contain minerals such as quartz, K-feldspars, plagioclase, biotite, muscovite, garnet, tourmaline and minor sillimanite.
Darvishi Esmaiel   +3 more
doaj   +1 more source

OH point defects in quartz – a review [PDF]

open access: yesEuropean Journal of Mineralogy, 2021
Research results of the past 6 decades on the incorporation of OH point defects in quartz are summarised and evaluated in terms of their application to natural samples and processes, and a link between experimental petrology, natural archives, and model ...
R. Stalder
doaj   +1 more source

In memory of Anatoly Ivanovich Rusin (07.04.1940-08.12.2019)

open access: yesЛитосфера, 2020
On December 8, 2019, Anatoly Ivanovich Rusin, a well known specialist in Petrology and Geochemistry of metamorphic complexes, doctor of geological and mineralogical Sciences, and Professor, died.

doaj  

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