(1) The thermal input from hydrothermal springs along submarine spreading centers may drive major patterns of deepwater circulation.

(2) These hills result from hydrothermal alteration of the granites which are characteristic of the area.

(3) Through a stroke of geologic good fortune, hydrothermal water percolates up through the landscape and feeds into the Colorado.

(4) Even animals that normally live in warm hydrothermal waters survive only when kept chilled.

(5) But proving that life originated at hydrothermal vents involves more than just showing that it could have.

(6) The fine sediments are fallout from a hydrothermal chimney that had been belching out smoke for years.

(7) In the eyes of geophysicists, hydrothermal circulation is inextricably intertwined with the pulsing bank of heat inside the planet.

(8) Hydrothermal alteration and mineralisation continued for up to 30 Ma after the emplacement of the intrusions at about 400 Ma.

(9) It is as if they are on a hydrothermal treadmill.

(10) The deposit middle temperature meteoric hydrothermal ore deposit.

(11) Hydrothermal reaction and sinter condition was discussed.

(12) Mineralized hydrothermal water mainly originated from the atmospheric rainfall.

(13) In addition, the evolutional process of minerogenic hydrothermal system from the meta-acid reducing environment to the weak-acid oxidizing environment is described.

(14) Taoyuan molybdenum ore belongs to mesothermal hydrothermal vein deposit. Alteration of country rock has linear feature.

(15) Precipitation of metals under hydrothermal conditions has the advantage of a compact plant but the disadvantage of producing ammonium sulfate as a coproduct.

(16) The hydrothermal processing greatly influences the trophic Structure and the dewaterability of the wastes.

(17) Geothermal energy is of great interest in certain locations where hydrothermal steam is vented into the atmosphere.

(18) The ultrabasic rocks have been extensively affected by several phases of hydrothermal alteration.

(19) Typically(/hydrothermal.html), albite of this purity results from secondary alteration processes such as hydrothermal metasomatism or authigenic growth during burial diagenesis.

(20) My eyes and head begin to ache from looking so intently for any sign of hydrothermal activity in the area.

(21) Precision dating of mineral deposits Many mineral deposits are the result of large-scale circulation of hydrothermal fluid in the upper crust.

(22) As well as the crushing effects described above, many of the rocks in the thrust zone suffered hydrothermal alteration.

(23) We began to wonder about other sources of light that might be peculiar to the extreme hydrothermal vent environment.

(24) We had hoped to find 400oC vents, a certain sign of complicity between magmatic intrusion and hydrothermal plumbing.

(25) Gold bodys are metasomatic vains, and was generated by diorite and surrounding rock which suffered multi-stage breccia, silicification and sericite hydrothermal alteration.

(26) The calcium borate product was prepared with natural ulexite powder, through hydrothermal depolymerization and phase inversion.

(27) This paper presents two different decomposition and coordination methods in short term hydrothermal optimal scheduling.

(28) The Mississippi Valley - type ( MVT ) lead - zinc deposits are the classic epigenetic hydrothermal ores.

(29) For FCC resid processing, USY zeolite is perferred because of its superior hydrothermal stability, vanadium resistance and coke selectivity compared to conventional zeolites.

(30) Banpo antimony deposit is a typical fracture - controlling and hydrothermal fluid filling deposit.

(31) An experiment on hydrothermal growth are in process in a sealed tube with a precious metal liner.

(32) It is cinnabar and dickite, kaolinite petrochemical and hydrothermal alteration of the product of mercury.

(33) The hydrothermal gold mineralization in eastern Kunlun Mountains is strong and is closely related to tectonic-magmatic activities.

(34) Nano- hydroxyapatite was synthesized by hydrothermal method in the submerged circulating impinging stream reactor, using calcium nitrate and sodium phosphate as reactants and acetamide as dispersant.

(35) Research results on growth of amethyst crystal by hydrothermal method are presented.

(36) Concerning the genesis of the deposit, there are two points of view, i. e. low-temperature hydrothermal origin and exogenetic infiltration origin.

(37) Thegenesis pertains to dynamo metamorphism hydrothermal metasomatic deposit under structural control.

(38) The most common synthesis technique of zeolite membranes - hydrothermal growthgrowth method, was introduced.

(39) Arsenian pyrite is the most important Au-bearing mineral, and silicification with quartz veins is the well-marked hydrothermal alteration.

(40) The conversion of -SH groups on the pore surface of the mercapto-functionalized mesoporous silicas with high hydrothermal stability to -SO3H gave rise to a series of solid acidic catalysts.

(41) Illite jade, in vein, was discovered in some copper mine, located in Daye county, HubeiProvince, and is a rind hydrothermal alteration rock from anorthosite.

(42) Seafloor hydrothermal activities have been found in tbe Red Sea, Galapagos, East Pacific Rise, Gulf of California, and Mid-Atlantic Ridge since 1960s.

(43) MSD is remaked by metamorphism, deformation and pegmatization, and telescoped the hydrothermal polymetallic mineralization concerned with basic rocks in the period of principal folding phase.

(44) Some mesoporous materials of zirconium phosphate were synthesized by hydrothermal method using some templates such as CTAB, TBAB, diethyl amine, ethylenediamine and urea, respectively.

(45) Thus, the high-temperature-loving microbes that swarm around deep-sea hydrothermal vents are often genetically and metabolically similar to the microbes in the hot springs of Yellowstone.

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(46) The wall rock alteration is weak, with characteristics of medium - low T hydrothermal ore deposit.

(47) It is showed that the ammonium sulfamate could anchor on the surface of the SWNTs via covalent bonds through the hydrothermal routes.

(48) In addition, the hydrothermal synthesis of transition metal stannate, titanium oxide and titanate have been performed.

(49) Bimodal granite is considered to be a mineralizing mother rock for magmatic hydrothermal gold deposits in south Liaoning provice.

(50) Calcium sulphate whisker was prepared by hydrothermal method using seawater or brine as raw material.

(51) The hydrothermal fluid and the spaces of ore-bodies in the deposit are provided by the granite magmas and the Permian period.

(52) But researchers had not found a multi-cellular or metazoan animal that did so until now — the giant tube worms that live by hydrothermal vents, for instance, rely on dissolved oxygen.

(53) Preparation of ultrafine chromic particles by hydrothermal reduction and size control was investigated.

(54) After hydrothermal treatment the phase changed to boehmite. The obtained product also has good crystallinity.

(55) Subaerial fumarolic or hydrothermal activity is implied by a large thermal plume in the center of the lake which slowly convects the water.

(56) After the purification, three routes, including solid, solution and hydrothermal routes, were adopted to modify the purified SWNTs with ammonium sulfamate.

(57) The genetic type belongs to the polygenetic and compound iron deposit formed by the exhalation sediment, metamorphic reconstruction and magmatic hydrothermal superposition enrichment.

(58) By means of hydrothermal method, high quality calcium stearate were cleanly synthesized by the reaction of calcium hydroxide with stearic acid in water.

(59) The test run result showed that LHA-28 possessed good hydrothermal stability, high bottoms crackability, good coke selectivity and high light oil yield.

(60) Original Co-deposits of Pule and Hengdong in northeast Hunan occurred in tectonic, hydrothermal, altered rock zone of the lower plate of main fracture belt F2, Changping fracture zone.

(61) This trait, along with the group's deep branching in the tree of life, has lead to the belief that the last common ancestor of life may be a thermophilic autotroph growing in a hydrothermal system.

(62) Metal - biogenic type is a post magmatic mesothermal hydrothermal solution filling metasomatic ore deposit correlated with diabase.

(63) At first, the craft and conditions of the synthesis of micaceous iron oxide with by-product of TiO2-ferrous sulfate by hydrothermal method was studied through experiments.

(64) The alabandite and getchellite of hydrothermal origin, cement anatase of alkaline volcanic origin, and the high content of chlorite in coal were fist found in coals.

(65) The hydrothermal area distributes mostly at the mid ocean ridge, back arc basin and hot spot.

(66) The ore deposit can be named as subvolcanic hydrothermal garnet - diopside - magnetite deposit.

(67) Its materials might come from both magmas and host rocks, indicating that it was formed when the ichor (or hydrothermal solution) replaced the Devonian siliceous shale and so on.

(68) Metamorphic water constitutes most of ore-bearing metamorphic hydrothermal water, which tends to mineralize in metamorphic front region and before the front region.

(69) Subvocanics is the final carrier of hydrothermal fluid of magmatism thus is the prospecting target.

(70) Mullite particles was synthesized by hydrothermal crystallization from kaolinite in coal measures.

(71) A thermal plume in the northwest part of the lake indicates underlying subaerial fumarolic or hydrothermal activity.

(72) The source of hydrothermal solutions is one of the cruxes of the genesis of hydrothermal deposits.

(73) The early deformational environment was favourable for movement of ore -forming hydrothermal solution and precipitation of gold and other metals.

(74) At the same time, the mercury was hydrothermal particulate cinnabar - type precipitates, which formed.

(75) The composite nanocrystalline of mullite was prepared via hydrothermal reaction of calcined kaoline. It was observed that growth of the nanocrystalline grain was good in TEM.

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(76) Remelting magmatism, hydrothermal circulation drived by heat from granitic bodies and concentration of water in thermal fluid may be the most important factors to mineralization of gold.

(77) Ge nanoneedles were prepared by hydrothermal deposition process using Ge and GeO2 as the starting materials and copper sheet as the deposition substrate.

(78) In the end, the significance and prospect of the hydrothermal system study are introduced.

(79) Ion exchange and hydrothermal reactions of zeolite under alkaline conditions are studied.

(80) However, its application to petrochemical industry is limited due to the amorphous character of mesopore wall and weak acidity, as well as poor hydrothermal stability.

(81) Xiangluwanzi gold deposit is a volcanogenic hydrothermal ore deposit related to volcanic cryptoexplosive breccia body.

(82) The brown coal and long flame coal were selected, which have representability and operability, and hydrothermal pretreatment on liquefaction reactivity were studied.

(83) A new type of germanic zeolite was synthesized in hydrothermal system.

(84) Xiangshan uranium ore - field is a famous hydrothermal uranium ore - field.

(85) P sieve was synthesized from series kaolinite by calcinating the kaolinite twice and hydrothermal procedures.

(86) Through correlation and analysis, we suggest that Bailongjiang tectonic belt is an advantageous metallogenic belt to hydrothermal re-formed Pb-Zn ore deposit, the northern however, at souths...

(87) Generation of uranium was closely related to migration and escaping of natural gas and may be also relevant to hydrothermal solution activities during epigenesis period.

(88) A new uranium coordination compound has been synthesized with o-phenylenediamine and UO2 by hydrothermal method, and characterized by IR, UV and TGA.

(89) Hydrothermal process and solvent thermal process have been successfully applied to prepare nanocrystalline CdS via the reaction of CdSO_4 with Na_2S or thioacetamide.

(90) Catalytic performances of hydrothermal dealuminated ZSM-5/Y composite zeolite in the cracking of Daqing VGO were studied in comparison with the mechanical mixture of ZSM-5 and Y zeolite.

(91) There are plenty sources of hydrothermal gold deposits in eastern Kunlun Mountains.

(92) Digestion high - pressure tank, also known as hydrothermal synthesis reactor, pressure melting shells, can digest.

(93) The formation of the gold deposit had undergone the process of migmatization , ductile sheering and magmatic hydrothermal superimposition.

(94) The discovery of modern sea-floor hydrothermal activity and the study on their distribution and genetic models represent a major achievement in marine geology and economic geology.

(95) Based on the XRD data of the field samples, the following hydrothermal sedimentation indicators are discovered: silicious sediment, rock salt, gypsum and natural sulphur.

(96) The effects of raw materials on the formation of silicon oxide nanospheres by hydrothermal deposition were investigated using Si and SiO2 as the silicon sources.

(97) Vertically aligned hierarchical ZnO rod-in-tube nano-architecture arrays are produced via a two-step process including an initial hydrothermal reaction followed by ultrasonication growth.

(98) The characteristics of the hydrothermal activity in West Yunnan region have been discussed through statistical analysis of a number of thermal spring data in this paper.

(99) The Middle Silurian stratabound uranium deposits in Western Qinling were formed due to hydrothermal modification of ground water and reconcentration of uranium from the sedimentary source rocks.

(100) The paper discusses the hydrothermal filling deposit of W-Bi-Mo quartz vein type and the vertical reverse zoning distribution of wolframite-bismuthinite- molybdenite mineral group .

(101) The kinetic of heterogeneous isotopic exchange reaction in hydrothermal melt state is studied and the results show that this labelling method gives high yield, rapid rate and good purity.

(102) The genesis of the deposit belongs to hydrothermal - exhalation stratabound deposit of syngenetic fault.

(103) Lead titanate nanorods with different length and diameter ratios have been successfully fabricated via hydrothermal method, PVA and PAA with different concentrations assisted as additives.

(104) Nano - sized sulphate ( PFS ), a new kind of inorganic coagulant, was prepared through the hydrothermal method.

(105) Hydrothermal synthesis reactor is in a certain temperature and pressure conditions, certain synthetic chemical reactor provided.

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(106) Magnesium hydroxide particles were synthesized via decomposition of hydrosulfide compound followed with hydrothermal treatment.

(107) From early to late stage metallogenic hydrothermal activity evolves from high to low altitude in space, and the oxygen fugacity changes frow lowto high value.

(108) The titanate nanotubes prepared by the hydrothermal method have growing interest due to their simple operation, cheap fabrication and high yield.

(109) Two Ga - substituted saponites with different amount of gallium were synthesized by hydrothermal method.

(110) The ZnO nanorod arrays grow firstly on FTO glass through a hydrothermal process and then act as templates for the fabrication of rod-in-tube nano-architectures during ultrasonication.

(111) In all hydrothermal deposits the minerals formed are not solely the sulfide ore minerals.

(112) Laminated siliceous rocks in country rocks might represent the nature of the Devonian hydrothermal sedimentary rocks.

(113) The formation of the ore -bearing hydrothermal fluid has under gone some phases:rainfall, normally -temperatured stratigraphical water , hypothermal fluid , and hypothermal ore -bearing brine.

(114) A novel uncertainty model for short-term optimization scheduling of the hydrothermal power system based on chance-constrained programming is presented.

(115) Xiangshan Uranium ore field is a famous Volcanic type hydrothermal uranium ore field.

(116) The genetic type of deposit belongs to shallow epithermal hydrothermal one.

(117) The oxygen isotype method was used to test the hydrothermal chimney and sulfide samples collected from the Mariana Island Arc, the Mariana Trough, the Okinawa Trough and the Galapagos Rift.

(118) For investigated crystal growth mechanism, the ZnO nanocrystal syntheses by different base ratio and surfactant have been conducted in hydrothermal process.

(119) It is common for almost all of large_and medium_size hydrothermal deposits to develop widespread hydrothermal alteration, accompanied by inspissation of ore_forming fluids.

(120) In addition, the effect of different templates was discussed on distribution of pore radius during the preparation of the mesoporous zirconium phosphate material by hydrothermal synthesis.

(121) Mg - Al anionic clay was prepared by coprecipitation and the hydrothermal method, and the removal of arsenate anions from the clay's aqueous solution was investigated.

(122) Pure sodium zirconium phosphate [ NaZr 2 ( PO 4 ) 3 ] powder has been prepared by hydrothermal synthesis method.

(123) On the pilot digestor, hydrothermal degradation (HTD) experiments of lawn-grass by the catalytic action of di- lute vitriol and no additional catalyzer were carried out.

(124) A comprehensive study of Hanwang BIF shows that its ferruginous material was associated with volcanic hydrothermal solution and was formed in a marine chemical sedimentary environment.

(125) The predicted metallogenic model is the hydrothermal fluid of the granodioritic porphyry origin ascending through F2 and F3 faults, which is different from the Yangxin rock mass.

(126) Spherical nanoscale silicon oxide have been prepared by hydrothermal deposition process using silicon and silica as the starting materials.