搜索结果: 1-11 共查到“地球化学 origin”相关记录11条 . 查询时间(0.093 秒)
Origin of unusual fractionation of Pb isotope ratios with calcium in thalliumspiked multiple collector-inductively coupled plasma mass spectrometry
Pb isotope, fractionation, MC-ICPMS
2017/4/10
We report the origin of significant fractionation of Pb isotope ratios in Ca-doped 0.08 mol L–1 HNO3 solutions. We
applied Tl-spiked standard bracketing mass fractionation correction using solution-b...
Isotope geochemistry and its implications in the origin of Yangla copper deposit, western Yunnan, China
Yangla copper deposit isotopes western Yunnann
2017/4/10
The Yangla copper deposit is located in western Yunnan Province, China, with an estimated Cu reserve of approximately
1.2 million tons. It is a typical giant copper deposit, and its mining started on...
Origin of boron in the Damxung Co Salt Lake (central Tibet): Evidence from boron geochemistry and isotopes
boron geochemistry origin quaternary deposits Damxung Co Salt Lake Tibet
2017/4/11
The origin of boron in boron-rich salt lakes in the Tibetan Plateau has long been the subject of debate. The Damzung
Co Salt Lake in central Tibet has high boron concentrations (B = 276–313 mg/L) and...
Lithium–strontium isotope and heavy metal content of fluid inclusions and origin of ore-forming fluid responsible for tungsten mineralization at Takatori mine, Japan
fluid inclusion lithium isotope initial 87Sr/86Sr ratio Takatori mine tungsten mineralization
2017/4/11
Ore-forming fluid trapped in vein quartz as fluid inclusions from tungsten ore at the Takatori mine was extracted by a
crush-leach technique. The trace metal content and isotopic composition (δ7Li an...
Origin of hotspots in the South Pacific: Recent advances in seismological and geochemical models
otspot South Pacific seismic tomography geochemical heterogeneities HIMU thermochemical superplume
2017/4/11
In this study, we review recent seismological and geochemical studies of the hotspots in the South Pacific superswell.
Extensive studies on global-scale seismic tomography have revealed the presence ...
U–Pb zircon age, geochemical, and Sr–Nd isotopic constraints on the age and origin of granodiorite porphyries in the Guilong area, southern Yunnan Province, South China
granodiorite porphyries U–Pb age-dating origin southern Yunnan Province South China
2017/4/11
Associated with several important polymetallic mineral deposits, the origin of the investigated Guilong area granodiorite
porphyries (southern Yunnan Province) are presently poorly understood. For th...
Lithium abundance and isotope composition of Logudoro basalts, Sardinia: Origin of light Li signature
lithium isotopes diffusion mantle heterogeneity Sardinia
2017/4/12
Basalts from Logudoro, Sardinia (Italy), showing geochemical features similar to EM1-type mantle source, have been
analyzed for their Li isotopic composition to provide data related to a heretofore u...
Origin and fate of deep-sea seeping methane bubbles at Kuroshima Knoll, Ryukyu forearc region, Japan
thermogenic hydrocarbons methane hydrates carbon isotopes helium isotopes Kuroshima Knoll microbial alteration propane
2017/8/9
Seafloor seeping methane bubbles were successfully sampled on the summit area of the Kuroshima Knoll (depth of ca. 640 m) using the gas-tight sampler WHATS attached to the Shinkai 2000. To evaluate th...
Geochemistry and Origin of the Oligocene Binkılıç Manganese Deposit：Thrace Basin, Turkey
Geochemistry Oligocene Binkı lı ç Manganese Deposit
2009/7/8
Many Oligocene Manganese deposits are found in the Trace basin, a Tertiary collisional-collapse type basin in the northwestern part of Turkey. All the mineralizations are originally sedimentary type. ...
Constraints on the Origin of the Balıkesir Thermal Waters (Turkey) from Stable Isotope (d18O, dD, d13C, d34S) and Major-Trace Element Compositions
water-rock interaction stable isotope compositions major-trace element geochemistry Balı kesir thermal waters Turkey
2009/7/7
The Balıkesir thermal waters in northwestern Turkey have discharge temperatures in the range of 31.8-98.5 ºC, near neutral pH values of 6.40 to 8.40 and TDS contents between 327 and 2578 mg/...
On the Origin and Age of the Arıburnu Beachrock, Gelibolu Peninsula, Turkey
beachrock carbonate cement intertidal lithification diagenesis Gelibolu Peninsula Turkey
2009/7/7
The beachrock formation on the Arıburnu coast situated in the Gelibolu Peninsula has been studied by field observation, thin-section interpretation, physicochemical analyses including ICP-AES and...