Feldspar minerals as efficient deposition ice nuclei
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چکیده
Introduction Conclusions References
منابع مشابه
Can Ice-Like Structures Form on Non-Ice-Like Substrates? The Example of the K-feldspar Microcline
Feldspar minerals are the most common rock formers in Earth's crust. As such they play an important role in subjects ranging from geology to climate science. An atomistic understanding of the feldspar structure and its interaction with water is therefore desirable, not least because feldspar has been shown to dominate ice nucleation by mineral dusts in Earth's atmosphere. The complexity of the ...
متن کاملInteractive comment on “Not all feldspar is equal: a survey of ice nucleating properties across the feldspar group of minerals” by A. D. Harrison et al
The present study provides an overview of the ice nucleation activity of different feldspars varying in their chemical composition and crystal structure. In total 15 different feldspars including plagioclase and alkali feldspars were analyzed for one weight percentage using a special freezing array method called μl-NIPI (microliter Nucleation by Immersed Particle Instrument). Additionally, the ...
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Kaolinite particles from two different sources (Fluka and Clay Minerals Society (CMS)) were examined with respect to their ability to act as ice nuclei (IN). This was done in the water-subsaturated regime where often deposition ice nucleation is assumed to occur, and for watersupersaturated conditions, i.e., in the immersion freezing mode. Measurements were done using a flow tube (the Leipzig A...
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Mineral dusts originating from Earth's crust are known to be important atmospheric ice nuclei. In agreement with earlier studies, feldspar was found as the most active of the tested natural mineral dusts. Here we investigated in closer detail the reasons for its activity and the difference in the activity of the different feldspars. Conclusions are drawn from scanning electron microscopy, X-ray...
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[1] Glacial sedimentary sequences in the north central United States record multiple advances of the Laurentide Ice Sheet (LIS) since 2 Ma. Although the tills found in these sequences were deposited by southward flowing glacial lobes, little information is available on the geometry of flow lines in the interior of the LIS during any one glaciation, and the provenance of glacial deposits older t...
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