Chagan sag is a secondary tectonic unit in chagandelesu depression, northeastern yingen - eji ' naqi basin, and the basement of the basin is a paleozoic fold belt of continental margin or island arc at the connection region of north china plate * tarim plate and kazakstan plate, with the character of erogenic belt. in working area and its adjacent area, the forming tectonic setting of indosinian intrusion was that orogenic belt pressed strongly, intracontinental subduction ; that of early yanshan movement epoch was the stress field transferred from compression to extension meanwhile the incrassate crust of orogenic zone turned to extensional collapse ; and that of early cretaceous volcanics was that the area structure extensional collapse further more during the post period of orogenic phase
查干凹陷屬于銀根?額濟納旗盆地東北端查干德勒蘇坳陷內的一個次級構造單元,其盆地基底為古生代時期華北板塊、哈薩克斯坦板塊和塔里木板塊交接部位形成的陸緣或
島弧褶皺帶,具有古生代造山帶的性質。研究區及鄰區印支期侵入
巖形成於造山帶強烈擠壓陸內俯沖的構造環境;燕山早期侵入
巖形成於由擠壓轉向拉伸、造山帶的增厚陸殼開始發生伸展垮塌的構造環境;早白堊世火山
巖形成於造山期后進一步發生伸展垮塌的區域構造環境。
Geotectonically, the youjiang sedimentary basin was referred as youjiang yindosinian folded belt. triassic turbidites accumulated in the basin were derived from surrounding ancient lands including yuebei, jiangnan, and yunkai. tectonic setting of the sedimentary basin was in between an active continental margin and a continental island arc
賦礦濁積
巖系的主要物源區為盆地周圍的「越北古陸」 、 「江南古陸」和東邊地區包括欽防海西褶皺帶在內的「雲開古陸」 ,沉積構造背景介於大陸
島弧和活動大陸邊緣之間的過渡構造環境。
This area was in an arc and rear - arc basin on convergent plates in the middle devonian
其
巖石化學及地球化學顯示
島弧火山
巖特徵。
4. it is the first time that eclogite conglomerates are discovered in maotangchan and fenghuangtai formations. this suggests that ultra - high pressure metamorphic rocks in the dabie orogenic belt exhumed to the earth ' s surface in lower cretaceous. the geochemistry data indicates that the protoliths of the eclogite gravels formed in a structure setting of volcanic arc
首次在毛坦廠組、鳳凰臺組中發現了榴輝
巖礫石,這一發現表明大別造山帶超高壓變質
巖在早白堊世已經折返到地表,而且地球化學研究表明這些榴輝
巖礫石的原
巖形成於
巖漿
島弧構造背景。
The outer hard crust of earth is made up of a dozen or so hard plates that drift on extremely hot, soft rock like floating islands on a sea
地球外部的堅硬外殼由大約12個板塊構成。就像在海上漂流的
島嶼一樣,這些板塊在極端高溫的地下
巖漿上漂移。
The zircon shrimp u - pb dating results suggest that the qiongzhong and danxian granites were emplaced at 237 3 ma and 186 3 ma, respectively, which argued against the previous thoughts that all the foliated granites with orientated structure in hainan island formed duing the hercynian - indosinian episode
高精度shrimp鋯石u - pb定年顯示瓊中
巖基形成於印支期( 237 3ma ) ,而儋縣
巖基形成於燕山早期( 186 3ma ) ,修正了前人將海南
島具有定向構造的變形花崗
巖等同於海西?印支期花崗
巖的認識。
The qiongzhong and danxian granites are belong to the kcg - type ( k - rich calc - alkaline ) granitoids according to the tectonic nomenclature by barbarin ( 1999 ). these foliated kcg - type granites with original orientated structure are the results generated in a changing geodynamic orogenic environment with alternating compressional to extensional stress field. this suggests that hainan island has been a part of south china since latest permian, and been major in extrusion environment of the tethys tectonic system
根據barbarin ( 1999 )分類,瓊中和儋縣
巖基花崗
巖屬于高k及含鉀長石斑晶的鈣堿性花崗
巖,同時它們具有原生定向構造,是擠壓?鬆弛?擠壓的構造演化過程的產物,表明海南
島從二疊紀末期開始已經是華南大陸的一部分,主要受到了特提斯構造域的影響。
Millions of years ago, metamorphic schists, gneisses and quartzites formed impressive, flat - topped inselbergs on a vast plain in the shadow of kilimanjaro
百萬年前,變質的石板片麻
巖和石英
巖,在乞力馬札羅山附近廣闊的平原形成壯觀
島嶼似的
2. 6 2. 7ga, these granitoids are most likely to be derived from the partial melting of hybrids both 2. 6ga metavolcanic materials in archean wutaishan magmatic arc and older continent crustal materials under lower than 1. 2gpa. petrological and geochemical characteristics of wangjiahui granitoid intrusion suggest that is probably fored under post - collisional tectonic background
2 . 1ga在- 3 . 82 - 2 . 80范圍,表明王家會古元古代花崗
巖最有可能形成於大約2 . 6ga五臺山大洋
島弧火山
巖物質和更老的陸殼物質在
" what, are there no grottos at monte cristo ?
「什麼!基督山
島上沒有
巖洞? 」
Compare the anti - predator strategies of several different species : rat, prairie dog, ground squirrel, meerkat, gazelle or other antelope or deer, and vervet monkey
比較一些不同物種躲避掠食者的策略?老鼠,草原犬鼠,地松鼠,海
島貓鼬,
巖羚或其他羚羊或鹿和草原猴。
They were those which treat of the haunts of sea - fowl ; of the solitary rocks and promontories by them only inhabited ; of the coast of norway, studded with isles from its southern extremity, the lindeness, or naze, to the north cape - where the northern ocean, in vast whirls, boils round the naked, melancholy isles of farthest thule ; and the atlantic surge pours in among the stormy hebrides
內中寫到了海鳥生息之地寫到了只有海鳥棲居的「孤零零的
巖石和海岬」寫到了自南端林納斯尼斯,或納斯,至北角都遍布小
島的挪威海岸:那裡,北冰洋掀起的巨大漩渦,咆哮在極地光禿凄涼約小
島四周。而大西洋的洶涌波濤,瀉入了狂暴的赫布里底群
島。
On the sovereignty ownership of scarborough reef based on history and international law of the sea
從歷史與國際海洋法看黃
巖島的主權歸屬
Then proceed to the unique beauty of mont st. michel, which stands on an island reached by a causeway. the crowning glory of mont st. michel is its abbey, which seems to be hanging in mid0air on the side of the rock
午後來到海上
巖島聖米歌爾山,在常年海霧迷漫的山頂上,巍然矗立一座結合羅馬式和哥德式建築精華的古世紀修道院,許多遊客專程前來朝聖。
No man has ever set foot on that rocky island ; it 's impossible to land there.
沒人涉足那個
巖島,不可能在那兒上岸。
Although most spoonbills spend the winter along open muddy coastlines all known breeding sites are on rocky islands
雖然大部份琵鷺于泥灘越冬,但所有已知的繁殖地都位於巖島上