Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Ebrahim Tale Fazel"'
Publikováno v:
پترولوژی, Vol 14, Iss 2, Pp 31-58 (2023)
Tourmaline is a borosilicate mineral with general formula of XY3Z6[T6O18](BO3)3V3W. Experimental studies demonstrate a wide range of stability for tourmaline-supergroup minerals to record different geological processes. They occur in metamorphic, gra
Externí odkaz:
https://doaj.org/article/6d054151be3940e4a15629ee2eecfa1f
Publikováno v:
Journal of Economic Geology, Vol 14, Iss 4, Pp 89-114 (2022)
Iron and arsenic sulfides are considered as the most important gold hosts in the sediment-hosted disseminated invisible gold deposits. The Zarshuran gold deposit (155 tons Au with average grade of 2.63 g/t) is formed in the Lower Cambrian black shale
Externí odkaz:
https://doaj.org/article/b62b203f6e7543c0aa07dc4a5d3b85b2
Publikováno v:
Journal of Economic Geology, Vol 14, Iss 2, Pp 29-64 (2022)
Introduction The Himalayan-Tibetan and Zagros Mountain ranges which are the youngest and most extensive continental-collision orogens in Tethyan domain host many important sediment-hosted Pb-Zn deposits, including the world-class Jinding, Huoshaoyun
Externí odkaz:
https://doaj.org/article/3e050da5aa9042dcb5c8ac2f59cf56b5
Publikováno v:
پترولوژی, Vol 13, Iss 2, Pp 121-150 (2022)
The NW-trending Urumieh-Dokhtar Magmatic Belt (UDMA) in the central-western Iran is a part of the Eastern Tethyan orogenic belt (Deng et al., 2018) and over past decades, it has become one of the most significant polymetallic (Au-Cu-Fe-Pb-Zn) provinc
Externí odkaz:
https://doaj.org/article/3374cb92c71846859cd472947e6c306a
Publikováno v:
Journal of Economic Geology, Vol 14, Iss 1, Pp 67-108 (2022)
Introduction The Saveh-Kashan-Qom copper belt, in the northern part of the Urumieh-Dokhtar Magmatic Arc (UDMA) consists of two of the oldest (gold and copper) zones in Iran (Samani, 1998; Rajabpour et al., 2017) where Upper Eocene-Oligocene Mard Aba
Externí odkaz:
https://doaj.org/article/b5fe83e2738540399b51c9553c9fc0ea
Publikováno v:
Journal of Economic Geology, Vol 13, Iss 2, Pp 327-352 (2021)
Introduction The Lakehsiah mining district is hosted in Early Cambrian volcano-sedimentary units (CVSU) of the Kashmar–Kerman zone, Central Iran. The Kashmar-Kerman belt is located between the Yazd block in the west and the Tabas block in the east
Externí odkaz:
https://doaj.org/article/d8b60c95e1414337b502a84b33c680f6
Publikováno v:
پترولوژی, Vol 12, Iss 1, Pp 1-18 (2021)
The Meshkin-Rasht Abad area is a small part of the western Alborz-Azarbaijan magmatic belt (AAMB). Field investigations reveal that andesitic-basalt rocks are the dominant rock units of the area with high-K calc-alkaline to shoshonitic affinities. On
Externí odkaz:
https://doaj.org/article/f452a06c20414e7ca95e09a2fd52ace8
Publikováno v:
Journal of Economic Geology, Vol 13, Iss 1, Pp 85-111 (2021)
Introduction The Takab-Angouran ore field, one of the Iran’s largest gold districts, is located in northwestern Zagros and belongs to the northwestern part of the Sanandaj-Sirjan Zone. This area has a dominant NW-SE structural trend and is spatial
Externí odkaz:
https://doaj.org/article/9cd931d7577b49419ba8f57d7a7a3f39
Publikováno v:
Journal of Economic Geology, Vol 12, Iss 2, Pp 131-155 (2020)
Introduction The Zarshuran gold deposit is located in the Takht-e-Soleyman complex, NW Iran. It is formed in the Iman Khan NW-trending anticline (Mehrabi et al., 1999; Samimi, 1992). The rock units at Zarshuran mainly consist of Precambrian sequence
Externí odkaz:
https://doaj.org/article/695d7dea2e384b28bfc5990acffc360d
Publikováno v:
پترولوژی, Vol 11, Iss 1, Pp 73-102 (2020)
The Lakeh-Siah region is situated in the Central Iran Zone (CIZ), 40 km northeast of Bafq city in the Yazd province. The rocks of the study area belonging to the lower Cambrian; including rhyolite, andesite and pyroclastic surge with porphyry to glom
Externí odkaz:
https://doaj.org/article/289308ee89cc4bffa7897dea8fc8a800