Results 101 to 110 of about 3,197,364 (211)

Processes and Patterns of Dolomite Precipitation in Aptian Pre‐Salt Deposits of Santos Basin, Brazil

Journal of Petroleum Geology, EarlyView.
ABSTRACT The Aptian pre‐salt lacustrine carbonates represent the most significant oil exploration target along the South Atlantic margin. Dolomitization of the Santos Basin Barra Velha Formation (BVF) is critical for reservoir quality, yet its origin, patterns, and evolution remain poorly understood.
J. T. F. Oste, R. Fricks Sayão, L. F. De Ros, L. Borghi   +3 more
wiley   +1 more source

Water transport to the core-mantle boundary. [PDF]

Natl Sci Rev, 2021
Walter MJ.
europepmc   +1 more source

Periodontitis and Diabetes: Mechanistic Evidence of a Circular Relationship

Journal of Periodontal Research, EarlyView.
This narrative review aimed to explore the underlying mechanisms that connect periodontitis to diabetes (and vice versa) and that influence disease susceptibility, progression and response to treatment. ABSTRACT The circular relationship between periodontitis and diabetes mellitus is one of the most established oral‐systemic links.
Philip M. Preshaw, Ren Jie Jacob Chew, Charlene Enhui Goh, Ali A. Abdulkareem, Dana T. Graves   +4 more
wiley   +1 more source

Neurite Imaging Reveals Widespread Alterations in Grey Matter Neurite Morphology in Obstructive Sleep Apnoea

Journal of Sleep Research, EarlyView.
ABSTRACT Obstructive sleep apnoea (OSA) is a common chronic multisystem disorder, and cortical structural alterations have been detected via conventional neuroimaging techniques. Recent advances in diffusion‐weighted imaging have yielded novel techniques for investigating neural microstructure, which may potentially offer supplementary insights into ...
Liping Qi, Qiu Chu, Ya‐Jie Liu, Rong‐Hua Li, Ling Wen, Yong‐Zhong Lin   +5 more
wiley   +1 more source

Subducted Carbon From Mantle Plume in Mid‐Ocean Ridge Basalts

Geophysical Research Letters
Deciphering the Earth's deep carbon cycle, from mantle plumes to mid‐ocean ridges, remains incompletely understood. In this study, we analyze the magnesium isotope composition of basalts collected from the South Mid‐Atlantic Ridge (SMAR), which have been
Haitao Zhang, Quanshu Yan, Xuefa Shi, Chuanshun Li, Fang Huang, Qiuyu Wen   +5 more
doaj   +1 more source

Revisiting olivine‐phyric shergottites: Pyroxene crystallization pressure and the role of undercooling

Meteoritics &Planetary Science, EarlyView.
Abstract Shergottites are the most abundant meteorites from Mars and a major source of information on magma reservoirs, transport, and eruption, particularly in the late Hesperian northern hemisphere. Conflicting interpretations have arisen on the crystallization conditions of pyroxene in olivine‐phyric shergottites.
Roger H. Hewins, Brigitte Zanda, Arnaud Duverger   +2 more
wiley   +1 more source

High thermal conductivity of the Earth's core and geodynamo

Vestnik MGTU
The geomagnetic field is generated by dynamo processes in the Earth's core. This process is supported by the cooling of the planet and the growth of the solid core. It is known that the magnetic field existed long before the appearance of the solid core,
Reshetnyak M. Yu.
doaj   +1 more source

A Microkrystite from the Australasian Tektite/Microtektite Strewn Field

Meteoritics &Planetary Science, EarlyView.
Abstract Microkrystites are glassy impact spherules. They contain primary crystallites carrying information on the physical and chemical conditions prevailing during vaporization, melting, and ejection in large impact cratering events. We report on the geochemistry and mineralogy down to nanometer scale of the first microkrystite (ODP1144A,14) from the
Matteo Del Rio, Luigi Folco, Matteo Masotta, Ana Černok, Enrico Mugnaioli   +4 more
wiley   +1 more source

Subduction‐Related Volcanic Activity as a Proxy for Global Subduction Flux Over the Past Billion Years, and Its Correlation With Geomagnetic Superchrons

Geophysical Research Letters
We investigate the frequency of subduction‐related volcanic events over the past billion years. Our analysis reveals distinct peaks and troughs interpreted as significant fluctuations in global subduction flux.
Jean Besse, Yves Gallet
doaj   +1 more source

Drowned carbonate‐rimmed margin controlling shelf‐edge delta progradation and sedimentation dynamics: Upper Cretaceous Woodbine Formation, Texas, USA

Sedimentology, EarlyView.
ABSTRACT Shelf‐edge deltas are commonly interpreted to record basinward facies migration across uninterrupted, gently dipping shelf margins; however, examples from mixed siliciclastic‐carbonate margins reveal more complex depositional dynamics. Periods and areas of carbonate sedimentation within mixed siliciclastic‐carbonate margins can modify shelf ...
Abdulkarim Al‐Hussaini, Cornel Olariu, Charles Kerans, Ronald Steel   +3 more
wiley   +1 more source