نتایج جستجو برای: geochemical survey

تعداد نتایج: 383580  

2012

Khatunabad area is situated geologically in UrmiehDokhtar magmatic belt in NW of Iran. In this research, studied area has been investigated in order to recognize the potential copper and molybdenum-bearing target areas. The survey layers include the lithologic units, alteration, geochemical result, tectonics and copper and molybdenum occurrence. As an accurate decision can have a considerable e...

2015
Mace G. Barron Jill Awkerman Sandy Raimondo

Barrier islands of Northwest Florida were heavily oiled during the Deepwater Horizon spill, but less is known about the impacts to the shorelines of the associated estuaries. Shoreline sediment oiling was investigated at 18 sites within the Pensacola Bay, Florida system prior to impact, during peak oiling, and post-wellhead capping. Only two locations closest to the Gulf of Mexico had elevated ...

2000
Magnús Ólafsson

The preliminary results of a geochemical survey of fumaroles and hot springs in the Torfajökull geothermal area, South Iceland, are presented. The total gas content in fumarole steam ranges from about 20 to roughly 25,000 mmole/kg, with carbon dioxide as the main component. Gas geothermometers indicate subsurface temperatures of about 300°C in the northern, western, and central parts of the are...

2009
Z. S. Žunić I. V. Yarmoshenko N. Veselinović M. V. Zhukovsky P. Ujić I. Čeliković J. P. Mc Laughlin S. E. Simopoulos A. Birovljev K. Fujimoto J. Paridaens F. Trotti S. Tokonami P. Olko K. Kozak F. Bochicchio R. Ramola J. W. Mietelski B. Jakupi G. Milić G. Ciotoli K. Kelleher M. Budzanowski S. K. Sahoo H. Vanmarcke

The paper deals with a specific aspect of a general survey, that is being carried out during last ten years in several regions of Serbia (former Yugoslavia, former Serbia and Montenegro) to assess population exposure to natural radioactivity based on geochemical and integrative pattern research approach. The originality regarding this work is related to the facts such as follows: the first iden...

In this research work, the frequency domain (FD) of surface geochemical data was analyzed to decompose the complex geochemical patterns related to different depths of the mineral deposit. In order to predict the variation in mineralization in the depth and identify the deep geochemical anomalies and blind mineralization using the surface geochemical data for the Dalli Cu-Au porphyry deposit, a ...

Journal: :مهندسی معدن 0
رضا قوامی ریابی دانشگاه صنعتی شاهرود میرمهدی سید رحیمی نیارق دانشگاه صنعتی شاهرود رضا خالوکاکایی دانشگاه صنعتی شاهرود محمد رضا هزاره سازمان زمین شناسی و اکتشافات معدنی کشور

the gold mineralization in kurdistan province of iran was classified as shear zone gold type by some of the researchers. in the current study, the geochemical samples collected from the secondary environment, stream sediments, at the sw of saqquez area were used to investigate the geochemical characteristics of the gold mineralized zones in this environment. the multi-variant statistical analys...

2010
Defne S. Apul Maria E. Diaz Jon Petter Gustafsson Lakhwinder S. Hundal

Biosolids-borne trace elements may be released to the environment when biosolids are used as fertilizers in farm land. Trace element leachate concentrations from biosolids are known to be limited by both organic and inorganic sorbent surfaces; this experimental evidence has not been previously verified with geochemical modeling of sorption reactions. In this study, pH-dependent leaching experim...

2004
B. L. N. Kennett

Both geophysical and geochemical techniques contribute to our understanding of the complex nature of the Earth’s mantle, but the two sources of information provide very different viewpoints. Most geophysical evidence provides an instantaneous snapshot of current structure, whilst geochemical evidence has much more information on age. Further, geophysical probes are naturally integrative since t...

Journal: :Geochemical Transactions 2008
Jeffrey M Dick

BACKGROUND Proteins of various compositions are required by organisms inhabiting different environments. The energetic demands for protein formation are a function of the compositions of proteins as well as geochemical variables including temperature, pressure, oxygen fugacity and pH. The purpose of this study was to explore the dependence of metastable equilibrium states of protein systems on ...

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