WordNet
- a sedimentary rock composed of sand
- move back and forth or sideways; "the ship was rocking"; "the tall building swayed"; "She rocked back and forth on her feet" (同)sway, shake
- material consisting of the aggregate of minerals like those making up the Earths crust; "that mountain is solid rock"; "stone is abundant in New England and there are many quarries" (同)stone
- pitching dangerously to one side (同)careen, sway, tilt
- a lump or mass of hard consolidated mineral matter; "he threw a rock at me" (同)stone
- (figurative) someone who is strong and stable and dependable; "he was her rock during the crisis"; "Thou art Peter, and upon this rock I will build my church"--Gospel According to Matthew
- cause to move back and forth; "rock the cradle"; "rock the baby"; "the wind swayed the trees gently" (同)sway
- mythical bird of prey having enormous size and strength
- United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984) (同)John Rock
- resembling or containing or abounding in sand; or growing in sandy areas; "arenaceous limestone"; "arenaceous grasses" (同)sandy, sandlike
PrepTutorEJDIC
- 〈U〉〈C〉『岩』,岩石;『岩壁』;《しばしば複数形で》岩礁 / 〈C〉『岩片』;《米話》『石』,小石 / 〈C〉岩のように強固(堅固)なもの,しっかりして頼りになるもの
- (リズムをつけて)…‘を'『前後に』(『左右に』)『そっと揺り動かす』 / …‘を'『震動させる』,振動させる / 《話》…‘の'気を転倒させる,‘に'ショックを与える / 『前後に』(『左右に』)『そっと揺れ動く』 / 『震動する』,激しく揺れる / 揺れ / 動揺 / =rock'n'roll
- ロック(アラビア神話の巨大な怪鳥でひな鳥を育てるのに象をえさにしたという)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2017/01/22 22:55:45」(JST)
[Wiki en表示]
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 lamination 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.
UpToDate Contents
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- 1. 活動的な小児や骨格発達の未成熟な青年の踵痛:原因の概要heel pain in the active child or skeletally immature adolescent overview of causes [show details]
…pad contusion, can be caused by acute trauma (eg, landing from high fall) or stepping on a root or rock during hiking or trail running. Examination reveals focal soft tissue tenderness at the plantar surface …
- 2. 唾石症salivary gland stones [show details]
…may be quite tender, particularly in the presence of associated infection. Stones are typically rock hard and small; they may be smooth or irregular. They are most commonly felt within the ductal system …
- 3. 小児や青年に生じる手首の慢性疼痛の原因causes of chronic wrist pain in children and adolescents [show details]
…and doing gymnastics about 35 hours per week . Distal radius physeal stress reaction also occurs in rock climbers and weight lifters . It should be suspected in patients with dorsal pain made worse by stress …
- 4. 眼窩骨折orbital fractures [show details]
…tear-shaped pupil (ruptured globe ) Afferent pupillary defect; Signs of orbital compartment syndrome (eg, "rock hard" eyelids and decreased retropulsion [resistance to attempts to push the eye deeper into the orbit …
- 5. 珪肺症silicosis [show details]
…exposure to inhaled silica, and new cases of silicosis are recognized worldwide every year . Among hard rock miners, radiographic evidence of silicosis is present in approximately one-third. The rate of positive …
English Journal
- Effects of pH, organic acids, and inorganic ions on lead desorption from soils.
- Yang JY, Yang XE, He ZL, Li TQ, Shentu JL, Stoffella PJ.
- Environmental pollution (Barking, Essex : 1987). 2006 Sep;143(1)9-15.
- The desorption characteristics of lead in two variable charge soils (one developed from Arenaceous rock (RAR) and the other derived from Quaternary red earths (REQ)) were studied, and the effects of pH value, organic acid, and competitive ions were examined. Desorption of Pb(2+) decreased from nearl
- PMID 16436308
- Adsorption-desorption characteristics of cadmium in variable charge soils.
- He ZL, Xu HP, Zhu YM, Yang XE, Chen GC.
- Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering. 2005 ;40(4)805-22.
- Cadmium (Cd) has received considerable attention because of its association with various human health problems. The behavior of adsorption-desorption of Cd at contaminated levels in two variable charge soils were investigated. The red soil (RAR) developed on the Arenaceous rock (clayey, mixed silice
- PMID 15792301
- Adsorption-desorption characteristics of lead in variable charge soils.
- Yang JY, Yang XE, He ZL, Chen GC, Shentu JL, Li TQ.
- Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering. 2004 ;39(8)1949-67.
- Adsorption desorption processes of Pb at contaminated levels in two variable charge soils were investigated. The red soil (RAR) developed on the Arenaceous rock (clayey, mixed siliceous thermic typic Dystrochrept) adsorbed more Pb2+ than the red soil (REQ) derived from the Quaternary red earths (cla
- PMID 15332661
Japanese Journal
- 南関東地方の新第三系および第四系の微化石層位学的研究
- 菊池 良樹
- 東北大學理學部地質學古生物學教室研究邦文報告 59, 1-53, 1964-03-24
- … This fact shows, as suggested in Figure 4, that toward the north of Tokyo there probably existed undulatory movement of the base rock, and a shallow water fauna became dominant during the after the Miocene. … On the other hand, the benthonic fauna of arenaceous Foraminifera which is abundant in the Kinone formation is considered to have been deposited under an anaerobic condition. …
- NAID 110004643446
- 靜岡県島田・掛川市付近の第三系とその浮遊性有孔虫化石群
- 斎藤 常正
- 東北大學理學部地質學古生物學教室研究邦文報告 51, 1-45, 1960-10-27
- … However, in the Mikasa group, rock samples of 400g. … Rock samples were collected from quadrangles of 1 meters by 0.05 meters parallel to the bedding plane in the manner shown in Fig. 7. … The rocks from the Ooigawa and Mikasa groups are well indurated and therefore they were treated with Glauber's salt hard rock maceration method. …
- NAID 110004643409
- 吉野 言生,小島 丈兒
- 地質學雜誌 59(696), 424-434, 1953-09-25
- … Ehime mine is situated about 5.,5km to the south of Niihama., Crystalline schists of the Sambagawa Group outcrop in the district., The crystalline schists of the district are composed of black-schists, originated from argillaceous rocks, sandstone-schists, derived from arenaceous rocks, siliceous schists from quartzose rocks, and green-schists, accompanied by serpentinite., The schistosity planes generally coincide with the original planes of stratification, and they dip mainly to the north., The crystalline schists can be divided litbologically into …
- NAID 110003012245
Related Links
- Thesaurus Antonyms Related Words Synonyms Legend: Noun 1. arenaceous rock - a sedimentary rock composed of sand sedimentary rock - rock formed from consolidated clay sediments sandstone - a sedimentary rock consisting ...
- Definitions of arenaceous rock 1 n a sedimentary rock composed of sand Types: show 8 types... hide 8 types... sandstone a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.) firestone grit, ...
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