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tuff n.【地質學;地理學】凝灰巖。adj.-aceous

tuffet

The hydrothermal breccia and karst in the beiya area are divided into 4 types and zones , including : sedimentary tuff and breccia induced by hydrothermal explosion and sedimentation on land surface ; hydrothermal sedimentary conglomerate and gas - explosive ejecting breccia related to sedimentation in and collapsing of some shallow karst caves ; netted hydotherma1 limcstone breccia and hydrothermal explosive breccia pipe related to hydrofracturing , corrosion and explosion in the hydrothermal channels ; and yellow granular limestone formed by simmering and alteration in the deep heated water reservoir 北衙地區熱水角礫巖和熱水巖溶可分為4種類型和層次,即地表相爆發沉積作用形成的沉積凝灰角礫巖、熱水沉積鮞狀灰巖與鈣華膠結角礫巖;與近地表洞穴沉積和垮塌作用有關的熱水沉積礫巖和汽爆射流角礫巖;與熱水通道相蝕裂和爆破角礫化作用有關的網絡狀灰巖角礫巖筒和熱水隱爆角礫巖筒;深部相熱水浸煮蝕變灰巖。

The basement of the basin is consist of precambrian crystal basement and paleozoic folding basement , while the cover has undergone the evolution of intra - continental rife in permian , down warped basin in triassic - cretaceous period and inter - mountains basin in tertiary . the main sediments are huge - thick volcanic rock , shallow intrusive rock and tuff in early permian , dark mudstone , marl and muddy dolostone in lucaogou formation in middle permian , huge thick volcanic rock , intruder in tiaohu formation in middle permian , miscellaneous sandy gravel , sandstone and gray mudstone in triassic ( the red is under the gray , and huge - thick dark gray , gray sandy gravel , sandstone , mudstone with coal layer in jurassic 盆地基底由前寒武紀結晶基底和古生代褶皺基底組成,盆地蓋層則經歷了二疊紀的裂谷盆地、三疊紀?白堊紀的坳陷盆地和第三紀后的山間盆地的演化過程。盆地主要沉積了下二疊統巨厚火山巖、淺成侵入巖和凝灰巖;中二疊統蘆草溝組的暗色泥巖、泥灰巖、白云質巖石以及條湖組的巨厚層火山巖、侵入巖;三疊系雜色砂礫巖、砂巖及灰色泥巖(下紅上灰) ;以及侏羅紀厚層深灰、灰色砂礫巖、砂巖、泥巖夾煤層。

Lithologically different rock sheets intertexturally superimposed with faults and folds of various styles . while , the southern belt is chiefly of devonian tuff , tuffaceous schist , marble relatively stable in strata and manifested by regional asymmetric fold easi - westward in axis , with well developed superimposed overthrust south - northward which controlled the whole structural framework in this area 南帶以泥盆系凝灰巖、凝灰質片巖、大理巖為主,地層相對穩定,表現為軸向東西的區域性不對稱褶皺,廣泛分布控制全區構造格局的南北向逆沖推覆的疊瓦式斷裂。

Four major rock types are found within the reserve . from the oldest to the youngest , they are the tuffs with volcanic bombs , granodiorites , porphyritic rhyolites and basaltic dykes , respectively . geomorphologically , the marine reserve has typical exposed rocky shore of south - easterly - directed capes and headlands in hong kong 鶴咀海岸保護區內可以找到四種主要巖石種類,以巖石形成的年代計算,最古老的是火山爆發形成的凝灰巖,然后依次是花崗閃長巖,流紋斑巖及玄武巖。

The main characters of the thermal fluid activity are recognized as follow : many types and stages of veins are widely developed ; vitrinite reflectivity of different areas varies apparently with the depth ; there was a high temperature field during the formation of the thermal fluid , meanwhile , the volcaniclastic rocks were modificated by the thermal fluid activity , for example , sericitization of plagioclase , chloritization of volcanic detritus in andesitic detris tuff ; in the tufaceous mud , the thermal fluid activity accelerates “ maturating “ of the organic carbon by heating ; and the trace elements show an anomaly in the wall rocks 同時,受熱流體活動的影響,熱流體對火山碎屑巖具有一定改造作用,如在安山質巖屑凝灰巖中,斜長石絹云母化、火山巖巖屑綠泥石化明顯;在凝灰質泥巖中,熱流體對圍巖中有機碳具有明顯的“催熟”加熱作用,微量元素則出現異常現象。

1 . the framework of mesozoic strata in the north margin of the dabie orogenic belt was reestablished according to the discovery of the tuff beds and volcanic debris in zhougongshan and fenghaungtai formations , along with their isotope ages and the correlations of sedimentary facies and heavy minerals 在周公山組中在鳳凰臺組中發現了火山凝灰巖層利火山巖碎屑,結合同位素年代學研究以及沉積相和重礦物對比,重新厘定了大別造山帶北緣中生代地層的格架。

The stratum , deposited in nongba which in eastern part of gengma area and composed by sandstone , mudstone and silicate and tuff interlayers , was named by former man as nanpihe formation and papai formation , and their age were later permian and early triassic respectively 耿馬弄巴地區出露一套以砂泥質巖為主體夾硅質巖、凝灰巖的地層,前人將它命名為南皮河組和怕拍組,并分別定名為晚二疊世和早三疊世。

Based on these and other experiments and field observations from the 1990s , geologists now think that the bishop tuff ? and probably most other supererupted debris ? was expelled in a single event lasting a mere 10 to 100 hours 根據這些實驗,以及自1990年代就開始進行的野外觀察,目前地質學家認為,畢夏普凝灰巖是一次持續約10 ~ 100小時的噴發而形成,其他大多數的超級噴發很可能也是如此。

The local volcanic tuff and the secondary structure mainly control the formation of this ore deposit , which metallogenic principle is relevant to the tectonic movements 雄村礦床成礦主要受到礦區內的火山凝灰巖巖和二級構造來控制。它的成礦機制與構造運動有關。

The reservoir types in lucaogou formation is carbonate rock , clastic rock and tuff , while the reservoir types in tiaohu formation is mainly tuff and volcanic rock 蘆草溝組儲層巖石類型主要有碳酸鹽巖、碎屑巖及沉凝灰巖,而條湖組則主要為火山巖和沉凝灰巖。

For decades , many geologists assumed that a series of distinct eruptions over millions of years must have occurred to produce the extensive bishop tuff 數十年來,許多地質學家認為,過去數百萬年必定發生了一連串的個別噴發,才能造成廣大的畢夏普凝灰巖。

The two early carboniferous fragments are composed of basalt and ash - black , fuchsia radiolaria silicalite , siliceous mudstone , tuff 早石炭世兩個斷片由玄武巖和灰白色、紫紅色放射蟲硅質巖、硅質泥巖、凝灰巖組成。

The rocks around austin are mostly limestone , but dolomite , clay , basalt , tuff , sandstones , and river gracel are also present 奧斯汀的巖石大部份是石灰巖,但也有大理石,粘板巖,玄武巖,凝灰巖,沙石等。

According to the lithologic characteristics of tuff clasts , descendant tuff clasts and water - carried tuff clasts can be divided 根據凝灰碎屑的巖石學特徵,可將其分為降落型凝灰碎屑和水攜型凝灰碎屑兩類。

If you count heads of our group we have a dozen . but only two of them can be counted on when you have a tuff job 如果你要算人頭,我們組有一打。可是,當有艱難的工作時,只有兩人可以算數。

Thick volcanic rock layers ( tuff ) occurred along the coast and on offshore islands of eastern hong kong 濃厚的火山巖層(凝灰巖)出現于本港沿岸及東面的離岸島嶼。

The reservoirs in permian is consist of carbonate rock , tuff , clastic rock and volcanic rock 二疊系儲集層主要由碳酸鹽巖、沉凝灰巖、碎屑巖和火山巖組成。

Manufactures and distributes tuff stuff monofilament and fluorocarbon fishing lines , crimps and sabiki rigs -生產實心漁竿船釣竿及漁竿梢等漁具產品。

Coarse ash tuff 粗粒凝灰巖