The deep water deposition means the deposition in the area where the water depth is larger than 30 meters, in which the major sediments are coarse sand and gravel. This kind of deposition is the relic deposition formed by the Pleistocene alluvial-lacustine deposition reworked under modern channel currents actions, and ususally the Holocene acummulation lack in the deep waters. The transitional zone deposition is the deposition between the low tidal level line and the 30 meters isobath, where the sediment types is changeable and the grain sizes are gradually coarsening from the low tidal line to the deep water area. This kind of deposition is developed by the deep water eroded sediments sorting under the transitional zone current action. The different types distributed along the isobath. The tidal flat deposition is the fine sediment deposition on the tidal flat which is flo sedimentation of the silty clay under the tidal flat dynamic action and ususally developed fluid mud on the lower tidal flat. The channel mouth deposition is the deposition in the channel mouth area. According to the sediment types, it includes sand deposition where there are coarse sediments supply and silt deposition where there are only fine sediments surpport.

峽道深水區(qū)沉積是指水深大于30米的峽道底部沉積，它以粗顆粒砂礫石沉積為特色亚洲欧美日韩国产综合在线一区，是現(xiàn)代峽道水動(dòng)力對(duì)第四紀(jì)海退時(shí)發(fā)育的沖洪積和坡積物進(jìn)行改造形成的蝕余沉積免费在线性爱视频网，全新世沉積地層往往缺失；峽道過渡帶沉積是指水深介于低潮位線至30米水深線之間發(fā)育的峽道邊坡沉積，該帶沉積以沉積物類型多樣為特色精品在线视频三级片，自低潮位線至30米水深線最新国产色，沉積物粒級(jí)逐漸變粗，由粉砂質(zhì)粘土逐漸遞變?yōu)橹写稚懊夥岩患段蘼雼H片AA片A片，是峽道深水區(qū)沉積物經(jīng)多次分選沉積而發(fā)育的国产精品久久久厕所偷窥盗摄，基本平行于等深線分布的條帶狀沉積，在岸坡較陡岸段美女黄色网站99，過渡帶下部可發(fā)育重力沉積中文无码在线视频伊人；峽道潮灘沉積是指在低潮線與海岸線之間發(fā)育的細(xì)顆粒沉積，它是粘性細(xì)顆粒泥沙在潮灘動(dòng)力作用下曰批免费网站播放免费，發(fā)生動(dòng)水絮凝沉積而形成的粉砂質(zhì)粘土沉積色欲性爱视频在线观看，在低潮灘可發(fā)育浮泥；峽道口門區(qū)沉積則是在峽道匯入大号访啦俦拼蚩苯涌吹幕破或海灣時(shí)，在峽道出口水流影響所及范圍的沉積黄色网站线在线观看入口，根據(jù)峽道口門區(qū)供給泥沙的特性高清A片一区，峽道口門區(qū)沉積有粉砂質(zhì)淤泥沉積和砂質(zhì)沉積兩種類型。

Results demonstrate that climate fluctuations recorded by the two boreholes correspond to the marine oxygen isotope stages. Thick layer of coarser grained fluvial deposits and the third layer of "hard mud" were deposited in the study area during MIS 6, reflecting a cold climate. The sediments became fine-grained and indicate a coastal marsh depositional environment during MIS 5. The second layer of "hard mud" was deposited during MIS 4. Fine-grained coastal marsh deposits dominated in the study area during early MIS 3, while lagoon-beach ridges prevailed during middle and late MIS 3, forming a layer of silt and fine sand in the coastal plain. The MIS 2 strata are composed of a typical sedimentary sequence with coarse grain in the lower section and fine grain in the upper section, i. e. yellowish grey or brownish yellow silt and brownish yellow or dark green "hard mud", respectively.

研究結(jié)果顯示亚洲AV免费在线观看，兩孔記錄的古氣候波動(dòng)可與深海氧同位素曲線進(jìn)行對(duì)比：對(duì)應(yīng)于深海氧同位素曲線第6階段(MIS6)亚洲黄色视频在线观看你懂的，堆積厚層的河道相粗顆粒沉積及第3硬土層，反映當(dāng)時(shí)氣候寒冷www.丝袜.com；第5階段(MIS5)少妇31p，為濱海湖沼沉積，沉積物的顆粒顯著變細(xì)全免国内国外A片；第4階段(MIS4)操操操操操操黄片免费看，本區(qū)形成第2硬土層；第3階段(MIS3)的早期玖性殴美，本區(qū)也發(fā)育濱海湖沼沉積最新高清麻豆AV在线播放，中晚期則形成潟湖—砂壩體系，在濱海平原區(qū)普遍發(fā)育粉手机看片人人干日韩不卡z、細(xì)砂層樱花草黄色一级视频；第2階段(MIS2)，地層由下粗上細(xì)的沉積序列構(gòu)成色玖玖在线，下部為黃灰com.在线久久特、棕黃色粉砂，上部則為棕黃色或暗綠色硬粘土高潮毛片无遮挡高清视频播放。

Soil-aggregate mixture is composed of gravel or cobble as its coarse grain and clay or sand as its filling. Whether natural or man-made, the mechanical properties of this material are widely different from homogeneous and continuous soil or rock.

土石混合體是由作為骨料的礫石或卵石與作為填充料的黏土或砂土組成的特殊工程地質(zhì)材料ww.黄色视频，無論天然形成或人工合成，其力學(xué)特性與均質(zhì)土體或巖體相比均有較大差異。

coarse-grained：粗粒的

coarse grain sand 粗粒砂 | coarse grained 粗粒的 | coarse gravel 粗礫