Results 31 to 40 of about 13,754 (164)
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
Genesis of an Archaean Quartz-Feldspar Porphyry [PDF]
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
Qian'echong low-F porphyry Mo deposits in the Dabie Mountains, central China
The Qian'echong Mo deposit is a large porphyry Mo deposit located in the northwest Dabie Mountains, central China, with proven Mo reserves of 741 Mt at 0.081%.
Mi, Mei, Sun, Wei-dong, Li, Cong-ying
core +1 more source
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
Affirmation and Negation: Reading Avicenna’s Al-‘Ibara Alongside Hellenistic Commentators [PDF]
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]
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
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-Cu Deposits of Turkey
Turkey, located within the western Tethyan-Eurasian Belt contains numerous porphyry copper deposits formed by the subduction, collision and post-collisional events during the closure of NeoTethys Ocean between the latest Cretaceous and late Miocene ...
Gençalioğlu-Kuşcu, Gonca +5 more
core +1 more source
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
Porphyry, tuff and loose specifications [PDF]
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

