Results 11 to 20 of about 8,675 (209)

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  

+10 more sources

Petrogenetic Study on Ultramafic Rocks from Waturapa and Surrounding Areas, South Konawe Regency, Southeast Sulawesi Province

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2023
The petrogenesis study of ultramafic igneous rocks in the South Konawe Region has been carried out by several previous researchers, however, petrogenesis of ultramafic igneous rocks in the Waturapa Region has never been carried out in detail.
Hasria   +3 more
doaj   +3 more sources

Earth's Earliest Phaneritic Ultramafic Rocks: Mantle Slices or Crustal Cumulates? [PDF]

open access: yesGeochemistry, Geophysics, Geosystems, 2022
When plate tectonics initiated remains uncertain, partly because many signals interpreted as diagnostic of plate tectonics can be alternatively explained via hot stagnant‐lid tectonics.
Jiawei Zuo   +10 more
doaj   +2 more sources

Analysis of Ultramafic Rocks Weathering Level Using the Magnetic Susceptibility in Konawe Regency, Southeast Sulawesi, Indonesia

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2020
The Konawe region is part of the Sulawesi Southeast Arm ophiolite belt where ultramafic rocks are exposed in the form of dunite and peridotite. The formation of nickel deposits is closely related to the weathering process of ultramafic rocks as a source ...
Jahidin   +6 more
doaj   +3 more sources

Carbon Mineralization in Fractured Mafic and Ultramafic Rocks: A Review. [PDF]

open access: yesRev Geophys
AbstractMineral carbon storage in mafic and ultramafic rock masses has the potential to be an effective and permanent mechanism to reduce anthropogenic CO2. Several successful pilot‐scale projects have been carried out in basaltic rock (e.g., CarbFix, Wallula), demonstrating the potential for rapid CO2 sequestration.
Nisbet H   +18 more
europepmc   +3 more sources

BADDELEYITE MINERALIZATION OF ULTRAMAFIC ROCKS FROM THE MAIN URALS COLLISIONAL SUTURE (UFALEY METAMORPHIC BLOCK, CENTRAL URALS) [PDF]

open access: yesМинералогия, 2016
Baddeleyite from ultramafic rocks of the Kurta eclogite-schist megamélange (Ufaley metamorphic block, Central Urals) is studied. The zirconium mineralization is established in Ni-bearing forsterite and magnetite-forsterite rocks, which were replaced by ...
A.I. Belkovsky, A.R. Nesterov
doaj   +1 more source

Ultramafic rocks, Table Mountain, Newfoundland

open access: yes
Ultramafic rocks exposed on Table Mountain are part of an ophiolite sequence including oceanic crust and mantle rocks. Images show examples of cumulate layering in the ultramafic rocks and some thin chromitite layers.
Marvinney, Robert G
core   +10 more sources

Influence of Petrogenesis on the Engineering Properties of Ultramafic Aggregates and on Their Suitability in Concrete

open access: yesApplied Sciences, 2022
This study focuses on the use of petrology as a useful tool in construction applications (i.e., concrete). More specifically, this study investigates how the petrogenetic characteristics of ultramafic rocks derived from ophiolite complexes (Veria–Naousa,
Petros Petrounias   +8 more
doaj   +1 more source

Multi-stage serpentinization of ultramafic rocks in the Manlay Ophiolite, southern Mongolia

open access: yesMongolian Geoscientist, 2021
Serpentinization of ultramafic rocks in ophiolites is key to understanding the global cycle of elements and changes in the physical properties of lithospheric mantle.
Amarbayar Nomuulin   +6 more
doaj   +1 more source

Magma feeding paleochannel in the Monchegorsk ore region: geochemistry, isotope U-Pb and Sm-Nd analysis (Kola region, Russia)

open access: yesЗаписки Горного института, 2022
A comprehensive study of a 340 m thick lenticular-sheet body of ultramafic composition penetrated by structural well M-1 at a depth of about 2.2 km was accomplished.
Valeriy F. Smolkin   +4 more
doaj   +1 more source

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