Results 11 to 20 of about 15,324 (216)

Element Migration of Mineralization-Alteration Zones and Its Geological Implication in the Beiya Porphyry–Skarn Deposit, Northwestern Yunnan, China

open access: yesApplied Sciences
Porphyry and the associated skarn-type deposit is one of the most important types of ore deposits worldwide, which usually exhibit significant zoning of mineralization-alteration, but the research on element migration in these mineralization-alteration ...
Fei Liu   +4 more
doaj   +2 more sources

Porphyry copper enrichment linked to excess aluminium in plagioclase [PDF]

open access: yes, 2016
Porphyry copper deposits provide around 75%, 50% and 20% of world copper, molybdenum and gold, respectively1. The deposits are mainly centred on calc-alkaline porphyry magmatic systems2, 3 in subduction zone settings1.
RJ Herrington (16105466)   +2 more
core   +5 more sources

Study of the degradation and microstructural characteristics of granite porphyry with freeze–thaw cycles [PDF]

open access: yesScientific Reports
In this research, the microstructural damage and the degradation law are investigated for the rock mass in open-pit mine slopes with freeze–thaw cycles.
Yibin Zhang, Yihai Zhang, Xutong Jiang
doaj   +2 more sources

Large Igneous Provinces (LIPs) and Anoxia Events in “The Boring Billion”

open access: yesGeophysical Monograph Series, Page 449-486., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Shuan‐Hong Zhang   +4 more
wiley  

+1 more source

A Comparison between the Pagan and Christian Apologies for Holy Images [PDF]

open access: yesحکمت و فلسفه, 2021
This paper is going to draw a comparison between pagan and Christian apologies for holy images. To this end, after giving a general history of the issue, the most important criticisms made of the images and veneration of them will be briefly considered ...
Alireza Esmaeilzadeh Barzi
doaj   +1 more source

Chlorite geochemical vectoring of ore bodies: a natural kind clustering approach

open access: yesFrontiers in Earth Science, 2023
Chlorite has long been considered a mineral group likely to have different trace element chemistry with proximity to mineralization, and therefore can be used to vector towards ore bodies.
Nicole Freij   +3 more
doaj   +1 more source

Antyczna tradycja o Pitagorasie z Samos jako twórcy fizjonomiki [PDF]

open access: yesStudia Antiquitatis et Medii Aevi Incohantis, 2023
(The ancient tradition concerning Pythagoras of Samos’ role as the founder of physiognomy): This paper collects and analyzes ancient sources that refer to Pythagoras of Samos as the founder of physiognomy.
Radosław Domazet
doaj   +1 more source

Particular and Universal in Isagoge [PDF]

open access: yesJournal of Philosophical Investigations
Porphyry's work titled Isagoge is commonly seen as an analysis of Aristotle's Categories, focusing on universal concepts, with the five predicables considered as different types of universals.
Amirhossein Saket
doaj   +1 more source

The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan

open access: yesInternational Journal of Economic and Environment Geology, 2021
Subduction related Miocene porphyry type deposits are found in the east-west trending Chagai magmatic belt (CMB) in Pakistan's western margin, Balochistan.
Fida Murad, Abdul Ghaffar, Innayat Ullah, Abdul Shakoor Mastoi, Muhammad Tariq Zaman
doaj   +1 more source

Lithological and Hydrothermal Alteration Mapping of Epithermal, Porphyry and Tourmaline Breccia Districts in the Argentine Andes Using ASTER Imagery

open access: yesRemote Sensing, 2018
The area of interest is located on the eastern flank of the Andean Cordillera, San Juan province, Argentina. The 3600 km2 area is characterized by Siluro-Devonian to Neogene sedimentary and igneous rocks and unconsolidated Quaternary sediments ...
Francisco J. Testa   +3 more
doaj   +1 more source

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