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A series of quartz granodiorite-granodiorite rock assemblage has been identified in Heiwan area of the Guanzi Town ophiolite mélange. In order to determine the formation mechanism of them, the petrology and whole rock geochemistry of gneissic granodiorite and metamorphic tonalite were conducted, and the zircon U-Pb dating, Lu-Hf isotope, Rb-Sr and Sm-Nd isotope of gneissic granodiorite were conducted. The results show that gneissic granodiorite and metamorphic tonalite have low contents of rare earth and trace elements, and metamorphic tonalite has obvious Eu positive anomaly, and both of them have the characteristics of oceanic plagiogranite. The age of granodiorite obtained is 512.6±2.0 Ma, and the εHf(t) value varies from +8.9 to +13.8, indicating that its magma source area is depleted mantle. The ISr value of granodiorite ranges from
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| 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 |
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