Results 11 to 20 of about 57,014 (308)

Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the “dolomite problem” [PDF]

open access: bronzeProceedings of the National Academy of Sciences of the United States of America, 2020
Significance Massive Paleozoic and Precambrian dolostone successions have long puzzled geologists in light of the kinetic barriers that inhibit low-temperature dolomite nucleation and precipitation (i.e., the “dolomite problem”).
Biao Chang   +15 more
openalex   +2 more sources

Pressure‐Induced sp 2 ‐sp 3 Transitions in Carbon‐Bearing Phases

open access: yesGeophysical Monograph Series, Page 1-9., 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 S. Lobanov   +1 more
wiley  

+13 more sources

Marine Anoxia and Ocean Acidification During the End‐Permian Extinction

open access: yesGeophysical Monograph Series, Page 325-340., 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.
Ying Cui   +4 more
wiley  

+8 more sources

Thermodynamic and Kinetic Studies of Dolomite Formation: A Review

open access: yesMinerals, 2023
The “dolomite problem”, which has confused scientists for nearly two centuries, is an important fundamental geological problem. The mineralogical characteristics of carbonate minerals show that the dolomite structure consists of an ordered arrangement of
Chao Chen   +8 more
semanticscholar   +1 more source

On the Use of Dolomite as a Mineral Filler and Co-Filler in the Field of Polymer Composites: A Review

open access: yesPolymers, 2022
Polymers are being used in many applications all around the world. However, there are some drawbacks in the properties of polymers that could hamper their usage in certain applications. Therefore, a new material polymer composite was introduced.
A.A. Ahmad Fauzi   +4 more
semanticscholar   +1 more source

The Dolomite Problem: A Matter of Time

open access: yesACS Earth and Space Chemistry, 2022
: Why is the mineral dolomite, CaMg(CO 3 ) 2 , abundant in ancient sedimentary rocks but scarce in modern rock-forming environments? What are the natural processes that lead to the characteristic Mg − Ca order in the dolomite structure?
C. Pina, Carlos Pimentel, Á. Crespo
semanticscholar   +1 more source

Phanerozoic variation in dolomite abundance linked to oceanic anoxia

open access: yesGeology, 2021
The abundance of dolomitic strata in the geological record contrasts with the general rarity of locations where dolomite forms today, a discrepancy that has long posed a problem for their interpretation.
Mingtao Li, Haijun Song, E. al.
semanticscholar   +1 more source

Improving the Tensile and Tear Properties of Thermoplastic Starch/Dolomite Biocomposite Film through Sonication Process

open access: yesPolymers, 2021
In this work, dolomite filler was introduced into thermoplastic starch (TPS) matrix to form TPS-dolomite (TPS-DOL) biocomposites. TPS-DOL biocomposites were prepared at different dolomite loadings (1 wt%, 2 wt%, 3 wt%, 4 wt% and 5 wt%) and by using two ...
A. Osman   +4 more
semanticscholar   +1 more source

Origin of the penecontemporaneous sucrosic dolomite in the Permian Qixia Formation, northwestern Sichuan Basin, SW China

open access: yesPetroleum Exploration and Development, 2020
The characteristics, formation time, and origin of the sucrosic dolomite reservoirs in the Permian Qixia Formation of northwestern Sichuan Basin are analyzed.
Feifan LU   +9 more
doaj   +1 more source

First discovery of dolomite and magnesite in living coralline algae and its geobiological implications [PDF]

open access: yesBiogeosciences, 2011
Dolomite is a magnesium-rich carbonate mineral abundant in fossil carbonate reef platforms but surprisingly rare in modern sedimentary environments, a conundrum known as the "Dolomite Problem".
M. C. Nash   +5 more
doaj   +1 more source

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