نتایج جستجو برای: iocg

تعداد نتایج: 110  

2009
Mark D. Barton

During the latter part of the Phanerozoic, numerous iron oxide(-Cu-Au) (IOCG) systems formed in parts of the Cordillera of North and South America. They occur in diverse tectonic and magmatic settings with considerable variety in deposit associations and characteristics. Although there are general patterns, there is no simple, all-encompassing descriptive model; a comparison with the diversity ...

2005
Stephen T. Johnston Leanne Pyle

Iron ox ide cop per gold (IOCG) de pos its are rec og nized world-wide and in clude a num ber of world-class, high-ton nage, low-grade Cu-Au de pos its that are typ i cally hosted in in tru sive-hy dro ther mal brec cias and in clude the Mesoproterozoic Olym pic Dam (Aus tra lia) and IgarapeBahia Alemao (Brazil) de pos its (Hitzman et al., 1992). In the Ca na dian Cor dil lera, nu mer ous Mesop...

Journal: :Gastrointestinal endoscopy 1999
A V Sahai P D Mauldin V Marsi R H Hawes B J Hoffman

BACKGROUND The least costly management strategy for patients undergoing laparoscopic cholecystectomy is unclear. METHODS A decision model incorporating cost ratios, test accuracy, complication, and failure rates was used to determine the costs of 4 peri-laparoscopic cholecystectomy strategies: endoscopic retrograde cholangiopancreatography (ERCP), intraoperative cholangiography (IOCG), endosc...

2012
Michael S. Zhdanov Alexander Gribenko Glenn Wilson

[1] We introduce a new approach to the joint inversion of multimodal geophysical data using Gramian spaces of model parameters and Gramian constraints, computed as determinants of the corresponding Gram matrices of the multimodal model parameters and/or their attributes. We demonstrate that this new approach is a generalized technique that can be applied to the simultaneous joint inversion of a...

2004
Mark D. Barton David A. Johnson

Recognizing footprints of Fe-oxide(-Cu-Au) ("IOCG") mineralization depends on the perspective that the beholder has on the nature and origin of these deposits. This follows from the fact that no simple descriptive model can adequately capture the diversity of the systems that are included in this family (any more than for epithermal deposits or similar broad classes). Nor, is there any semblanc...

Journal: :The International journal of oral & maxillofacial implants 2012
Steven E Eckert

8:45am Welcome and Introduction Innovations in Deep Exploration 9:00 Richard Hillis (DETCRC) The Deep Exploration Technologies CRC 9:30 Steven Hill (The University of Adelaide) Some deep thinking about deep regolith 9:50 Andreas Schmidt-Mumm (The University of Adelaide) Tracing ore systems using mineral chemistry 10:10 Graham Heinson (The University of Adelaide) Joint inversion of seismic and M...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده علوم 1391

آتشفشانی، نفوذی، iocg، طلا، کاشمر

Journal: :زمین شناسی اقتصادی 0
علیرضا الماسی محمد حسن کریم پور خسرو ابراهیمی نصرآبادی بهنام رحیمی اورس کلوتزلی ژوزه فرانسیسکو سانتوس

introduction the study area is located in central part of the khaf- kashmar-bardeskan belt which is volcano-plutonic belt at the north of the dorouneh fault in the north of lut block. the north of the lut block is affected by tectonic rotation and subduction processes which occur in the east of iran (tirrul et al., 1983). the magmatism of lut block begins in jurassic and continues in tertiary (...

Journal: :Ore Geology Reviews 2021

Key constraints related to the nature of alteration and mineralization in geologically complex economically important iron oxide copper–gold (IOCG) systems remain highly speculative, especially, physicochemical characteristics hydrothermal fluids. This study was conducted on samples from Khetri Copper Belt (KCB) western India that hosts several IOCG-type deposits. The aims constrain qualitative...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده مهندسی معدن 1391

نحوه توزیع عناصر کمیاب و نادر خاکی در کانسارهای آهن همواره مورد توجه پژوهشگران حوزه معدن بوده است. توزیع عناصری چون خاکی های نادر، فسفر، تیتانیوم، وانادیوم و... از جهات مختلف از جمله به عنوان یک عنصر مزاحم، محصول جانبی و... در کانسارهای مختلف آهن مورد بررسی قرار می گیرد. در این نوشتار با هدف بررسی نحوه توزیع عناصر کمیاب و نادر خاکی در کانسار آهن چغارت بافق، ابتدا کلیاتی در مورد تیپ کانسارهای io...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید