Results 11 to 20 of about 44 (43)

Cs4Ca[Si8O19]: a new mixed tetrahedral–octahedral oxosilicate, its topological features and comparison with other interrupted framework silicates

Acta Crystallographica Section B, EarlyView.
The crystal structure of the mixed tetrahedral–octahedral framework silicate Cs4Ca[Si8O19] has been solved. A topological analysis of the present compound and other interrupted framework silicates is presented.Single crystals of a previously unknown caesium calcium silicate with the composition Ca4Ca[Si8O19] have been obtained during a systematic study
Volker Kahlenberg
wiley   +1 more source

The petrology of the Ozerki meteorite constrained by electron backscatter diffraction and X‐ray computed tomography

Meteoritics &Planetary Science, EarlyView.
Abstract Combining electron backscatter diffraction (EBSD) with X‐ray computed tomography (XCT) offers a comprehensive approach to investigate shock deformation and rock texture in meteorites, yet such integration remains uncommon. In this study, we demonstrate the synergistic potential of XCT and EBSD in revealing deformation metrics, thereby ...
Alice Macente, Luke Daly, Sammy Griffin, Maria Gritsevich, Jarmo Moilanen, Josh Franz Einsle, Patrick Trimby, Chris Mulcahy, Jonathan Moffat, Alexander M. Ruzicka   +9 more
wiley   +1 more source

The Role of Relative Humidity in Estimating Cloud Condensation Nuclei Number Concentration Through Aerosol Optical Data: Mechanisms and Parameterization Strategies

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract The number concentration of cloud condensation nuclei (NCCN) is vital for quantifying aerosol‐cloud interactions. Estimating NCCN using aerosol optical properties is essential for obtaining continuous NCCN data. This study highlights the significant impact of relative humidity (RH) on NCCN estimation through aerosol optical data, especially at
Yuying Wang, Rui Zhang, Nan Wang, Jialu Xu, Junhui Zhang, Chen Cui, Chunsong Lu, Bin Zhu, Yele Sun, Yannian Zhu   +9 more
wiley   +1 more source

Sedimentology and reservoir characterisation of Lower Jurassic clastic sedimentary rocks, Salt and Trans Indus Ranges, Pakistan: Evidence from petrography, scanning electron microscopy and petrophysics

The Depositional Record, Volume 11, Issue 2, Page 698-717, April 2025.
In this study, sandstones of the Lower Jurassic Datta Formation (DF‐LJ) in the Salt and Trans‐Indus Ranges are investigated regarding composition, diagenesis, provenance and reservoir properties using petrography, scanning electron microscopy (SEM) and petrophysical analysis.
Salman Ahmed Khattak, Nasar Khan, Waseem Khan, S. Sahaya Jude Dhas, George Kontakiotis, Ihtisham Islam, Hammad Tariq Janjuhah, Assimina Antonarakou   +7 more
wiley   +1 more source

Would Adding the Anthropocene to the Geologic Time Scale Matter?

AGU Advances, Volume 6, Issue 2, April 2025.
Abstract Abrupt planetary change forced by the cumulative and overwhelming impacts of human activities in the mid‐twentieth century supports a new geologic epoch, named after Anthropos, the agent of this change. This transformation extends well beyond Holocene norms and is identified in geologic records worldwide.
Francine M. G. McCarthy, Martin J. Head, Colin N. Waters, Jan Zalasiewicz   +3 more
wiley   +1 more source

Contemporaneous Triassic Calc‐Alkaline Volcanism and Fast‐Spreading Magmatism in the Western Tethys: Implications for the Eastern Mediterranean Palaeogeographic Evolution

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract Triassic calc‐alkaline volcanics that are mainly exposed in the Hellenides—Dinarides orogen, as well as eastwards in the Afyan Zone, are considered to constrain the petrogenetic mechanisms that led to their formation, and to unravel the geodynamic processes that occurred in the western Tethys, related to the NW Gondwana (Apulia) promontory and
Petros Koutsovitis, Konstantinos Soukis, Sotirios Kokkalas, Andreas Magganas, Theodoros Ntaflos, Yirang Jang, Sanghoon Kwon, Christos Karkalis, Petros Petrounias, Harilaos Tsikos, Paul Mason   +10 more
wiley   +1 more source

Quantifying Localized and Delocalized Rock Deformation in Multi‐Stage Relaxation Experiments Using Distributed Optical Fiber Sensing

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract Multi‐stage uniaxial and triaxial stress relaxation tests were performed on Weschnitz granodiorite, Beishan granite, and Jinping dolomite marble to investigate the deformation evolution before system‐size failure, and to study stress relaxation responses.
Shuting Miao, Arno Zang, Pengzhi Pan, Yinlin Ji, Erik Rybacki, Hannes Hofmann, Guido Blöcher, Martin Lipus   +7 more
wiley   +1 more source

A Search for the Near‐Surface Particulate Layer Using Venera 13 In Situ Spectroscopic Observations

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Whether or not there is a particulate layer in the lowest 10 km of the Venusian atmosphere is still an open question. Some of the past in situ experiments showed the presence of a detached particulate layer, and a few suggested the existence of finely dispersed aerosols, while other instruments supported the idea of no particulate matter in ...
Shubham V. Kulkarni, Patrick G. J. Irwin, Colin F. Wilson, Nikolai I. Ignatiev   +3 more
wiley   +1 more source

Mid‐ and Low‐Altitude Raman Lidar to Simultaneously Measure Nighttime Water Vapor and All‐Day Temperature

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract Conventional Raman lidar is constrained by the low signal of Raman backscattering, rendering it incapable of measuring the atmospheric parameters in high‐altitude regions. This paper presents a powerful Raman lidar that employs a multi‐receiver system, enabling simultaneous measurements of optical properties of aerosols, atmospheric ...
Chunhui He, Zhibin Yu, Fan Yi, Shihai Wang, Changming Yu, Zhangjun Wang, Le Chen, Mingguang Zhao   +7 more
wiley   +1 more source

Global Distribution and Seasonality of Martian Atmospheric HCl Explained Through Heterogeneous Chemistry

Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.
Abstract Recent observations from the ExoMars Trace Gas Orbiter (TGO) have revealed the presence of hydrogen chloride (HCl) in the martian atmosphere. HCl shows strong seasonality, primarily appearing during Mars' perihelion period before decreasing faster than projected from photolysis and gas‐phase chemistry.
Paul M. Streeter, Kylash Rajendran, Stephen R. Lewis, Kevin S. Olsen, Alexander Trokhimovskiy, Oleg Korablev, Manish R. Patel   +6 more
wiley   +1 more source