WordNet
- resembling or containing or abounding in sand; or growing in sandy areas; "arenaceous limestone"; "arenaceous grasses" (同)sandy, sandlike
- a sedimentary rock composed of sand
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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/10/21 22:40:22」(JST)
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Arenite (Latin Arena, sand) is a sedimentary clastic rock with sand grain size between 0.0625 mm (0.00246 in) and 2 mm (0.08 in) and contain less than 15% matrix.[1] The related adjective is arenaceous. The equivalent Greek-derived term is psammite, though this is more commonly used for metamorphosed sediments.
Since it refers to grain size rather than chemical composition, the term is used for example in the classification of clastic carbonatic limestones, as the granulometrically equivalent term sandstone is not appropriate for limestone. Other arenites include sandstones, arkoses, greensands, and greywackes.
Arenites mainly form by erosion of other rocks or turbiditic re-deposition of sands. Some arenites contain a varying amount of carbonatic components and thus belong to the rock-category of carbonatic sandstones or silicatic limestones. Arenites often appear as massive or bedded medium-grained rocks with a middling- to wide-spaced preferred foliation and often develop a pronounced cleavage.
Pettijohn[2] gives the following descriptive terms based on grain size, avoiding the use of terms such as "clay" or "argillaceous" which carry an implication of chemical composition:
Descriptive size terms
Texture |
Common |
Greek |
Latin |
Coarse |
gravel(ly) |
psephite (psephitic) |
rudite (rudaceous) |
Medium |
sand(y) |
psammite (psammitic) |
arenite (arenaceous) |
Fine |
clay(ey) |
pelite (pelitic) |
lutite (lutaceous) |
References
- ^ Britannica definition of arenite. Accessed on January 1, 2008
- ^ Pettijohn, Francis J. (1975). Sedimentary Rocks. Harper & Row. ISBN 0-06-045191-2.
English Journal
- Geologic conceptual model of the municipality of Sete Lagoas (MG, Brazil) and the surroundings.
- Galvão P1, Hirata R1, Cordeiro A2, Barbati D2, Peñaranda J3.
- Anais da Academia Brasileira de Ciencias.An Acad Bras Cienc.2016 Mar;88(1):35-53. doi: 10.1590/0001-3765201520140400. Epub 2016 Feb 2.
- PMID 26840000
- The effect of Grobiotic-P combined with yeast cell wall and gluconic acid on growth performance, nutrient digestibilities, and cecal microbial populations in young chicks.
- Jacobs CM1, Parsons CM.
- Poultry science.Poult Sci.2009 Nov;88(11):2360-7. doi: 10.3382/ps.2009-00037.
- PMID 19834087
- Two-dimensional numerical modeling of 90Sr transport in an unsaturated Chinese loess under artificial sprinkling.
- Qian T1, Li S, Ding Q, Wu G, Zhao D.
- Journal of environmental radioactivity.J Environ Radioact.2009 May;100(5):422-8. doi: 10.1016/j.jenvrad.2009.02.004. Epub 2009 Mar 26.
- PMID 19324478
Japanese Journal
- Clay Mineralogical Study of the Tertiary Malubog Formation, Cebu Province, Philippines
- Aleta Dennis Gerald A.,Tomita Katsutoshi,Kawano Motoharu [他],ALETA Josephine T.,LUPO Elena S.
- 鹿児島大学理学部紀要 36, 43-57, 2003-12-30
- … Mineralogical study of the Malubog Formation focused on the gently dipping strata of the argillaceous-arenaceous sedimentary rocks with generally minimal coal seam interbeds. …
- NAID 110004910644
- Character and origin of deep arenaceous weathering mantles on the Bega Batholith, southeastern Australia
- <国立科博専報>静岡県西部, 三笠層群の地質学的研究
- 氏家 宏,井上 洋子
- 国立科学博物館専報 13, 9-14, 1980-00-00
- … The results are summarized by generic composition change (Fig. 3) and show that the so-called arenaceous forms charcteristically predominate in the Towata, Kurami and particulary Matsuba Formations. …
- NAID 110004312915
Related Links
- ar·e·na·ceous (ăr′ə-nā′shəs) adj. 1. Resembling, derived from, or containing sand. 2. Growing or living in sandy areas. [From Latin harēnāceus, arēnāceus, from harēna, arēna, sand; see arena.] arenaceous (ˌærɪˈneɪʃəs) adj 1. ...
- Arenaceous definition, Geology, Petrology. (of rocks) sandlike; sandy. See more. ... Such are the cotton-wood and the beech-grape, species which are usually confined to the arenaceous alluvions of valleys.
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