PDF
Full
Outline
A series of high Ba-Sr granitoids, developed in the Taihang Mountains region, are associated with a large amount of metal mineralization. To analyze their genesis is of great significance for studying the crust-mantle interaction and the evolution of its corresponding magmatic mineralization system in the destruction process of the North China Craton. This study takes the Guanyintang intrusion in the central section of the Taihang Mountains as an example to conduct zircon U–Pb geochronological, lithogeochemical, and genetic mineralogical researches of its different rocks. The research results show that main components of the Guanyintang intrusion are quartz monzonite, granodiorite, with minor diorite as the marginal phase of the intrusion. The compositions of dikes associated with the intrusion are consistent with those of main components of the Guanyintang intrusion. The diorite was formed at 125.2 Ma. Three measured ages for porphyritic quartz monzonite, granodiorite, and porphyritic granodiorite are 124.6 Ma,129.9 Ma, and 130.33 Ma, respectively. The Lu-Hf isotopic characteristics of zircons indicate that the Guanyintang intrusion was formed by the mixture of acidic magma produced by the partial melting of ancient crust and basic magma produced by the partial melting of lithospheric mantle. Characteristics of the zoning texture of orthoclase indicate that the Guanyintang high Ba-Sr granitoid was formed by the mixture of the granitic magma in the magma chamber and the mantle derived magma which were intruded into the acidic magma chamber in multiple pulsations.
PDF
35
15
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
