Results 91 to 100 of about 14,537 (221)

Characteristics and control factors of feldspar dissolution in gravity flow sandstone of Chang 7 Member, Triassic Yanchang Formation, Ordos Basin, NW China

Petroleum Exploration and Development
To clarify the formation and distribution of feldspar dissolution pores and predict the distribution of high-quality reservoir in gravity flow sandstone of the 7th member of Triassic Yanchang Formation (Chang 7 Member) in the Ordos Basin, thin sections ...
Haihua ZHU, Qiuxia ZHANG, Guodong DONG, Fei SHANG, Fuyuan ZHANG, Xiaoming ZHAO, Xi ZHANG   +6 more
doaj   +1 more source

Decoding Metamorphic Nanodiamonds Formation Through Their Internal Structures

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Metamorphic diamonds offer insights into Earth's evolution, modulating the global carbon cycle through subduction into the mantle and exhumation. However, the formation and internal structure of minute diamonds remain poorly understood. Here, we study the internal structures of diamond‐bearing inclusions from the Eastern Alps using state‐of ...
Tim Sotelšek, Marian Janák, Sašo Šturm, Sorour Semsari Parapari, Nik Gračanin, Kristian Radan, Mehmet Ali Gülgün, Stanislava Milovská, Mirijam Vrabec   +8 more
wiley   +1 more source

Sedimentary Circumstances and Physiographic Sites Impact on the Morphological Properties of Feldspar Minerals of Iraqi Soils

, 2023
Ghada Kamal Hamza Al-Zubaidi, Luma Abdalalah Sagban Alabadi   +1 more
openalex   +1 more source

Evaluation of shear bond strength based on substructure materials and ceramic veneering techniques

Journal of Prosthodontics, EarlyView.
Abstract Purpose Bilayered restorations have both the strength of the substructure material and the esthetics of the veneer material; however, they should have appropriate bonding between the two materials. This study aimed to evaluate the shear bond strength (SBS) according to the substructure material and veneering technique used in bilayered ...
Han‐Sol Song, Yoon‐Hyuk Huh, Chan‐Jin Park, Lee‐Ra Cho, Kyung‐Ho Ko   +4 more
wiley   +1 more source

Effectiveness of self‐etching ceramic primer on the bond strength of dental glass ceramics: A systematic review and meta‐analysis of in vitro studies on feldspathic and leucite‐reinforced ceramics

Journal of Prosthodontics, EarlyView.
Abstract Purpose This systematic review and meta‐analysis evaluated the bond strength effectiveness of a self‐etching ceramic primer, specifically Monobond Etch & Prime (MEP), compared to hydrofluoric acid with silane (HF+S) in feldspathic and leucite‐reinforced dental glass‐ceramics (DGCs). Materials and Methods This study followed PRISMA‐p guidelines
Nathalya Fedechen Martins, Isaac Augusto Dantas Nogueira, Francisbênia Alves Silvestre, Nicole Escórcio de Meneses, Rebeka Thiara Nascimento dos Santos, Raniel Fernandes Peixoto   +5 more
wiley   +1 more source

New knowledge about shock events that affected the L‐chondrite parent body from two heavily shocked L6 meteorite finds

Meteoritics &Planetary Science, EarlyView.
Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis, L. Ferrière, C. Ma, J. Hu, D. Palles, P. D. Asimow   +5 more
wiley   +1 more source

Dissolution behavior of feldspar in oxalic acid at 40–100 °C: Implications for Al enrichment during chemical weathering

Solid Earth Sciences
The dissolution behavior of feldspar is fundamental to understand geological processes such as surface mass cycling, chemical weathering, mineral deposition and global climate change. In this study, we select oxalic acid – one of the most popular organic
Xin Huang, Feng Guo, Xing Ding, Liang Zhao, Feng Zhang, Yaqian Wen   +5 more
doaj   +1 more source

Photoluminescence of alkali feldspar measured with a portable CCD spectrometer

, 2011
Toshio Kohno, Satoshi Nakano, Kuniaki Makino, Masahiro KAYAMA, H. Nishido   +4 more
openalex   +2 more sources

Determining impact angle from the spatial distribution of shock metamorphism: A case study of the Gosses Bluff (Tnorala) impact structure, Australia

Meteoritics &Planetary Science, EarlyView.
Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews, Auriol S. P. Rae, Thomas Kenkmann, Nicholas E. Timms, Aaron J. Cavosie, Marian B. Holness   +5 more
wiley   +1 more source

Vertical profiling of shock attenuation at the Rochechouart impact structure, France

Meteoritics &Planetary Science, EarlyView.
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska, S. Alwmark, C. Alwmark, M. H. Poelchau, P. Lambert   +4 more
wiley   +1 more source