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Unraveling the link between worldwide adakite-like rocks and porphyry Cu deposits
Chemical GeologyAdakite-like rocks, as an important recorder of magmatic evolution in mantle and crust, are closely associated with major porphyry Cu deposits. However, the underlying mechanism connecting these associations remains insufficiently elucidated.
Guoxiong Chen, Huayong Chen
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A review of research on adakites
International Geology Review, 2019Taking account of their importance in inferring continental geodynamic processes, adakites have been the subject of considerable research since their discovery and identification.
Lingyu Zhang, Shichao Li, Qingying Zhao
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Adakites and adakitic melts: Compositions of rocks, quenched glasses, and inclusions in minerals
Petrology, 2017Data set of rocks and glasses whose compositions correspond to the term “adakite” (SiO2 > 56 wt %, Sr > 400 ppm, Sr/Y > 18) was compiled from two large geochemical data bases. It was revealed that the adakitic melts are characterized by extremely low abundance as compared to adakitic rocks.
M. L. Tolstykh +2 more
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Lithos, 2019
Abstract Late Paleocene adakitic granitoids are rare in Iran except in the northwest. We focused on the adakitic Saqqez-Takab pluton, which occupies an area of ~600 km2. New U-Pb zircon dating yield crystallization ages of 58–56 Ma (Thanetian). These granitoids comprises granite, quartz monzonite and monzogranite with granular to mylonitic textures ...
Hossein Azizi +4 more
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Abstract Late Paleocene adakitic granitoids are rare in Iran except in the northwest. We focused on the adakitic Saqqez-Takab pluton, which occupies an area of ~600 km2. New U-Pb zircon dating yield crystallization ages of 58–56 Ma (Thanetian). These granitoids comprises granite, quartz monzonite and monzogranite with granular to mylonitic textures ...
Hossein Azizi +4 more
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Discovery of Eocene adakites in Primor’e
Doklady Earth Sciences, 2011This paper presents the first results of petrochemical and geochemical studies (by the ICP-MS technique) of adakites comprising a small extrusive body in the Ilistaya River basin (West Primor’e). Based on the data of radioisotopic dating (K-Ar method), the age of adakites corresponds to the Middle Eocene (45.52 ± 1.1 Ma).
A. A. Chashchin +3 more
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Lithos, 2018
Abstract The Satkatbong diorite (190 Ma) and the older Yeongdeok granite (250 Ma) in the Yeongnam massif, which is part of the southeastern margin of the Eurasian plate, are affected by a subduction system that is associated with the Izanagi and Farallon plates.
Hoseong Lim +4 more
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Abstract The Satkatbong diorite (190 Ma) and the older Yeongdeok granite (250 Ma) in the Yeongnam massif, which is part of the southeastern margin of the Eurasian plate, are affected by a subduction system that is associated with the Izanagi and Farallon plates.
Hoseong Lim +4 more
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Underplating-related adakites in Xinjiang Tianshan, China
Lithos, 2008Abstract Intermediate to acidic porphyries and dacites in the Awulale and Sanchakou area of the Xinjiang Tianshan region, China, conform to the definition of high-SiO2 adakite (HSA). These volcanic or subvolcanic rocks are characterized by high Na2O (Na2O > K2O), high Sr/Y (51–327), and strong depletions in HREE and HFSE (Nb, Ta, and Ti).
Z.H. Zhao +6 more
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Association of adakites with gold and copper mineralization in the Philippines
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science, 1998Adakites are intermediate or acidic volcanic and plutonic rocks which derive from partial melting of subducted oceanic crust when the subducting slab is young (< 20 Ma) and hot, and at the start and the end of subduction. In the Philippines, most of porphyry Cu and epithermal Au deposits are either spatially and temporally related or cogenetic with ...
Fernando G. Sajona, René C. Maury
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Gondwana Research, 2017
Abstract Post-collisional adakitic rocks (26–9 Ma) have been recognized in southern Tibet for almost 20 years; however, their origins and geodynamics remain highly controversial. This paper reports geochronological and geochemical data for the Lasa intrusion exposed in the Zhongba terrane and proposes implications for the origins of the Miocene ...
Yalin Li +7 more
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Abstract Post-collisional adakitic rocks (26–9 Ma) have been recognized in southern Tibet for almost 20 years; however, their origins and geodynamics remain highly controversial. This paper reports geochronological and geochemical data for the Lasa intrusion exposed in the Zhongba terrane and proposes implications for the origins of the Miocene ...
Yalin Li +7 more
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Adakites—the key to understanding LILE depletion in granulites
Lithos, 2005Abstract For more than 20 years, it has been argued that granulites of the lower continental crust are depleted in fluid-mobile elements such as Cs, Rb, U and Th, either because they were removed by melting of the lower crust or through dehydration. We argue that there is little evidence for a simple relationship between granulite-facies metamorphism
Hugh R. Rollinson, John Tarney
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