نتایج جستجو برای: alteration

تعداد نتایج: 45560  

Onzon-Kanbani area is a western flank of Mogok Metamorphic Belt where gold mineralization is hosted as auriferous quartz-vein with epithermal low-sulphidation characters. Mineralization is closely associated with NE-SW trending fracture or shear zone probably related to the dextral movement of the Sagaing Fault system. Mineralization related hydrothermal alteration is developed as narrow zones ...

H. Ranjbar S. Alirezaei S. Dargahi S. J. Yousefi

The study area is located in Jabal-Barez Ranges, southeastern part of Kerman Copper Belt (KCB), where the porphyry copper mineralization such as Kerver occurs. This article deals with the enhancement of hydrothermal alteration minerals for exploration of porphyry Cu mineralization, and differentiates intense hydrothermal alteration zones from those with low intensity. Shortwave Infrared (SWIR) ...

Journal: :journal of tethys 0

ramand region is a part of qazvin province located in south west of buin-zahra. in this region, hydrothermal alterations have been extended within magmatic occurrences and therefore are mostly detectable by remote sensing techniques. altered facies could be well enhanced after applying selective principle component analysis (spca), least squares fitting method (ls-fit) and spectral angel mapper...

Journal: :journal of tethys 0

expensive to provide these maps  with field measurements  therefore  it is better to use new methods. this study provides a lithological and alteration mapping units with dominant minerals based on hyperspectral images of eo1-hyperion satellite. to do so, two different zones  were  investigated:  the  cuprite-nevada  and  mozahem  volcano  in  iran  which  have suitable conditions for our study...

جعفری, محمد , شفیعی, بهنام , شمعانیان, غلامحسین , عظیم محسنی, مجید, نوری اصل, فرزانه ,

The Argash antimony ore deposit is located at south of Neyshabour and the eastern part of the Sabzevar zone. This deposit occurs within a sequence of Eocene-Oligocene volcanic-intrusion rocks. The mineralization occurs as open space filling, taking place as irregular veins, veinlets and hydrothermal breccias. The mineralogy of the veins is comparatively simple. The primary antimony-bearing mine...

2004
H. PORTER J. B. LANGSTON

201(5): 897-900. I g6 I .-Dogs under chloralose anesthesia show augmented reflex responses of systolic arterial pressure, mean arterial pressure, diastolic arterial pressure, and pulse rate to bilateral occlusion of the common carotid arteries over the responses of these same parameters before any a nesthesia. H yporeflexia, as indicated by these parameters, is observed when the anesthetic is c...

2013
Kevyn B. Collins-Thompson

(57) A model generation module is described herein for using a machine learning technique to generate a model for use by a search engine. The model assists the search engine in gener ating alterations of search queries, so as to improve the rel evance and performance of the search queries. The model includes a plurality of features having Weights and levels of uncertainty associated thereWith, ...

2008
M. MCINTOSH CLAUDIUS KULVINSKAS B. KAUFMAN

Streptococcus pyogenes type 12, isolated from the pharynx of a patient with acute poststreptococcal glomerulonephritis, was subcultured in Todd-Hewitt broth and incubated at 37°C for 24 hr. The organisms were removed by centrifugation and washed with Dulbecco’s solution, and serial dilutions were plated on blood-agar plates; 1 ml of suspension containing 3 x 104 organisms was used for treatment...

In this paper, we aim to achieve two specific objectives. The first one is to examine the applicability of wavelet neural network (WNN) technique in ore grade estimation, which is based on integration between wavelet theory and Artificial Neural Network (ANN). Different wavelets are applied as activation functions to estimate Cu grade of borehole data in the hypogene zone of porphyry ore deposi...

کریم‌پور, محمد حسن, ملک‌زاده شفارودی, آزاده ,

The Homond Cu-Au porphyry prospecting area is located southwest of Birjand. Subvolcanic monzonitic to dioritic rocks are highly altered. The main alteration zones are: quartz-sericite-calcite-pyrite, propylitic and carbonate. The content of major, trace and rare earth elements (REE) of the rocks changes due to alteration. The changes are less in some such as TiO2, MnO, P2O5, Nb, Gd, Y, Eu and h...

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