نتایج جستجو برای: geochemical profile

تعداد نتایج: 232683  

Journal: :Ground water 2011
Aly I El-Kadi L Niel Plummer Pradeep Aggarwal

NETPATH-WIN is an interactive user version of NETPATH, an inverse geochemical modeling code used to find mass-balance reaction models that are consistent with the observed chemical and isotopic composition of waters from aquatic systems. NETPATH-WIN was constructed to migrate NETPATH applications into the Microsoft WINDOWS® environment. The new version facilitates model utilization by eliminati...

2004
D. B. Skillicorn

Detecting deep mineralization from partial element concentrations in surface and near-surface samples requires detecting the signature of one geochemical process against a background that arises from many other geochemical processes. Since the last glaciation of the Canadian Shield, it is believed that only H+ can have diffused through substantial overburden, and hence that the only available s...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2005
Wagner J Barreto Maira R Ribeiro Maria C Solci leda S Scarminio Jorge Nozaki Elisabeth de Oliveira Sônia R G Barreto

The hydrological cycle of Lake Ipê and the principal parameters that could affect its abiotic parameters and its metal (Fe, Mn, and Cd) concentrations were investigated. A detailed study of seasonal variations using Principal Components Analysis (PCA) for the most relevant metals (Fe, Mn and Cd) was performed, assisted by the MINTEQA2 geochemical equilibrium program using 15 water abiotic param...

Journal: :زمین شناسی اقتصادی 0
حسین حاجی میرزاجان محمد حسن کریم پور آزاده ملکزاده شفارودی محمد رضا حیدریان شهری سید جواد هامونی

roudgaz prospect area is a cu, sn, pb, zn, and au polymetal vein system located to the southeast of gonabad and in the northeast of lut block. oxidan subvolcanic tertiary rocks with monzonite to monzodiorite porphyry composition intruded the metamorphic rocks of middle jurassic. the majority of intrusive bodies are affected by carbonation, argillic, sericitic, and silicification-tourmaline alte...

Journal: :Dalton transactions 2007
R J P Williams

A novel approach to the evolution of organisms is given. It asserts that biological evolution was consequential upon geochemical, environment, change and was inevitable not accidental.

Journal: :geopersia 2014
hossein shahi reza ghavami abolghasem kamkar rouhani hoshang asadi haroni

the analysis of geochemical data in frequency domain, as indicated in this research study, can provide new exploratory informationthat may not be exposed in spatial domain. to identify deep geochemical anomalies, sulfide zone and geochemical noises in dalli cu–au porphyry deposit, a new approach based on coupling fourier transform (ft) and principal component analysis (pca) has beenused. the re...

Journal: :journal of mining and environment 0
h. moeini faculty of mining and metallurgy, university of yazd, yazd, iran a. aryafar department of mining, faculty of engineering, university of birjand, birjand, iran

anomaly recognition has always been a prominent subject in preliminary geochemical explorations. among the regional geochemical data processing, there are a range of statistical and data mining techniques as well as different mapping methods, which serve as presentations of the outputs. the outlier’s values are of interest in the investigations where data are gathered under controlled condition...

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