Results 31 to 40 of about 15,324 (216)

Travailler pour l'empereur

open access: yesLes Nouvelles de l’Archéologie, 2016
The recent excavations at Samut have confirmed the evidence of Agatharchides on the use of forced labour in the Ptolemaic gold-mines. On the other hand, there is almost no evidence for the presence of prisoners in the imperial quarries at Mons Claudianus
Hélène Cuvigny
doaj   +1 more source

Affirmation and Negation: Reading Avicenna’s Al-‘Ibara Alongside Hellenistic Commentators [PDF]

open access: yesNazariyat: Journal for the History of Islamic Philosophy and Sciences, 2022
The relation of priority and posteriority between the affirmation and negation, which Aristotle put forth in Peri Hermêneias, has had some important consequences in terms of logical attribution and judgement.
E. Burak Şaman
doaj  

An Introduction to Aristotle's Philosophy of Logic [PDF]

open access: yesحکمت و فلسفه, 2008
The philosophy of logic is a posterior science, which examines the philosophical principles of logic as well as the matters derived from the logical debates.
gholamreza zakyani
doaj   +1 more source

Genesis of an Archaean Quartz-Feldspar Porphyry [PDF]

open access: yes, 1985
Three conformable units of fine-grained quartz-feldspar porphyry were mapped in the Berry River Formation, Warclub Group, Northwestern Ontario. The largest unit (Unit 1) is compared geochemically and petrographically to quartz-feldspar porphyry ...
Cooper, Ian S.
core   +1 more source

Geology and mineralization of the Tiegelongnan supergiant porphyry-epithermal Cu (Au, Ag) deposit (10 Mt) in western Tibet, China: A review

open access: yesChina Geology, 2022
The Tiegelongnan Cu (Au, Ag) deposit in central Tibet contains more than 10 Mt of copper ranking 29th in the world. It is characterized by typical porphyry-epithermal alteration and mineralization.
Huan-huan Yang   +17 more
doaj   +1 more source

Origin of porphyry dolomite in the 5th sub-member of the 5th member of Ordovician Majiagou Formation (M55sub-member), Ordos Basin

open access: yesShiyou shiyan dizhi, 2022
Large number of heterogeneous porphyry dolomites have been found in the 5th sub-member of the 5th member of Ordovician Majiagou Formation (M55 sub-member) in the central and eastern parts of Ordos Basin, and many drilled wells have shown good oil and gas
Huihong LIAO   +7 more
doaj   +1 more source

Porphyry, tuff and loose specifications [PDF]

open access: yes, 1999
There is a common practice of using the terms Porphyry and Tuff interchangeably. The two materials are distinctly different in origin and resultant properties, appearance and\ud availability and should not be ...
Thomas, Glenn S.
core  

Devonian porphyry Cu deposits in NW China: the Xiaotuergen example

open access: yes, 2017
The Nuoerte Basin in northern Altay contains numerous mineral discoveries, including the Xiaotuergen porphyry Cu, Kumasu VMS Pb–Zn, and Hongshanzui orogenic Au deposits.
Jihua Qin (3377126)   +3 more
core   +1 more source

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

open access: yesGeological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang   +6 more
wiley   +1 more source

Spatial Overlay Analysis of Geochemical Singularity Index α-Value of Porphyry Cu Deposit in Gangdese Metallogenic Belt, Tibet, Western China

open access: yesApplied Sciences, 2023
The statistical modeling with ILR-RPCA-back CLR has two problems when dealing with the closure effect of geochemical data. Firstly, after performing isometric logratio (ilr) transformation, robust principal component analysis (RPCA) is employed for ...
Shunli Zheng, Xiaojia Jiang, Shunbao Gao
doaj   +1 more source

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