Results 121 to 130 of about 19,778 (275)
Sedimentology, EarlyView.ABSTRACT The Paleoarchean Antarctic Creek Member of the Mount Ada Basalt, Eastern Pilbara Terrane, Western Australia, includes beds of jasper and white chert composed of sand‐sized silica granules that often contain or are mixed with silt‐sized particles of haematite.
Donald R. Lowe, Gary R. Byerly
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, 2011 The compositional variation of plagioclase and the partitioning of major elements between plagioclase and melt have been experimentally measured as a function of the cooling rate. Crystals were grown from a basaltic melt at a pressure of 500 MPa under (
Del Gaudio, P. +9 more
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Ductile Extrusion Triggered by Continental Collision in NE Brazil
Terra Nova, EarlyView.ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser +6 more
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Emergence of Continents Stabilized the Bioavailability of Boron
Terra Nova, EarlyView.ABSTRACT Boron is an essential element for the development of life on Earth; borates stabilize ribose in prebiotic reactions and facilitate metabolism in higher plants. There is, however, a relatively narrow surface boron concentration range over which borates stabilize and serve as a micronutrient rather than a toxin.
Brendan V. Dyck, Jon Wade
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A lunar hygrometer based on plagioclase-melt partitioning of water
, 2019 The Moon was initially covered by a magma ocean. Hydrogen detected in plagioclase of ferroan anorthosites, the only available samples directly crystallised from the lunar magma ocean (LMO), can be used to quantify LMO hydrogen content.
Van Westrenen, W. +5 more
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Plagioclase in Yamato-7308 Meteorite from Antarctica
, 1979 P(論文)Twinning patterns, optical angles, Kohler angles, and other optical properties and chemical compositions of the calcic plagioclases in Yamato-7308 meteorite from Antarctica were examined.
Suwa, Kanenori, Yagi, Kenzo
core
Quench Plagioclase from some Archean Basalts
, 1974 Quench plagioclase has been recognized in well preserved Archean submarine basalts from four localities in the superior province of the Canadian Shield. The crystals are skeletal in form with hollow cross sections and swallow tail terminations.
T. H. Pearce
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Soda Ash Free Batches for Novel Container Glass Compositions
International Journal of Applied Glass Science, Volume 17, Issue 3, July 2026.A series of novel glass compositions incorporating up to 50% recycled cullet is melted from batches free of soda ash. Their viscosity–temperature, liquidus, and electrical conductivity characteristics are comparable to conventional soda–lime—silica glasses, enabling processing in conventional installations while markedly reducing batch‐to‐melt ...
Tomasz Engelmann +2 more
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The Importance of Tire Wear Particles for Atmospheric Ice Nucleation
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Tire wear particles (TWPs) are prevalent microplastic particles in the atmosphere and pose significant environmental and health risks to humans. Here, we investigated the ice nucleation activity (INA) of TWPs under mixed‐phase cloud conditions (∼−20.0°C < T < −5.0°C) and its changes caused by different environmental exposures, including UV and
Siyuan Jing +7 more
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