Table 1 Age statistics of main magmatic rocks in Xilinhot area.
Period | Age (Ma) | Lithology | Geographic location | Petrogenesis/magma source regions | Tectonic setting | Data sources |
|---|---|---|---|---|---|---|
Carboniferous | 354 ± 7 | Gabbro | Xiaobalaing | SSZ | oceanic crustal subduction | |
334.5 ± 3.5 | Meta Basic Volcanic Rock | Xiaojingzi | depleted mantle wedge induced by dehydration of subducted slab | island arc | ||
333.4 ± 8.5 | pillow basalt | Dahate | SSZ | oceanic crustal subduction | ||
333 ± 4 | plagioclase granite | Xiaobalaing | SSZ | oceanic crustal subduction | ||
330.1 ± 1.1 | quartz diorite | Chagandele | Middle Neoproterozoic basement lower crust | island arc | ||
328.2 ± 1.3 | Granodiorite | Chagandele | Middle Neoproterozoic basement lower crust | island arc | ||
323.4 ± 2.4 | Meta Basic Volcanic Rock | Dongyingpan | A depleted mantle wedge accounted for by dehydration of subducted slabs | island arc | ||
318.6 ± 1.3 | Granodiorite | Chagandele | Middle Neoproterozoic basement lower crust | island arc | ||
317 ± 4 | Granite | Xilinhot Reservoir | Type I granitoid/subduction-accounted enriched mantle wedge | island arc | ||
315 ± 2.3 | basalt andesite | Zhagayin | High-magnesium andesite/subduction melts account for mantle | island arc | ||
314.5 ± 4.4 | Layered Basalt | Daqing pasture | SSZ | oceanic crustal subduction | ||
313 ± 2 | Moyite | Ulan Tolgoi | Type I granitoid/subduction-accounted enriched mantle wedge | island arc | ||
310.1 ± 1.2 | quartz diorite | Chagandele | Middle Neoproterozoic basement lower crust | island arc | ||
310 ± 2 | Granite | Yiheaole | Type I granitoid/subduction-accounted enriched mantle wedge | island arc | ||
309.2 ± 1.6 | dichroic granite | Baiyinshuhu | TTG/Basalt Slab Flake Dehydration | island arc | ||
300.9 ± 1.6 | Bembatu Group Yinganyan | Sunite | Subduction plate sheet dehydration accounts for mantle wedge | island arc | ||
Early Permian | 297 ± 2 | high magnesium diorite | Huerqin | Subduction-accounted enriched mantle wedge | island arc | |
282 ± 2 | high magnesium diorite | Bagahaer | SSZ/subducted material melt accounting mantle wedge | island arc | ||
281 ± 2 | Granite | Houtoumiao | Type I granitoid/subduction-accounted enriched mantle wedge | island arc | ||
279.3 ± 1.4 | Granodiorite | Wulangou | Edakite/Si-rich melt-accounted mantle | island arc | ||
275.6 ± 1.3 | Wulashan orthogonal granite | Balbaqiwula | Highly differentiated type I granitoid/lower crust | island arc | ||
274.2 ± 1.4 | Wulashan orthogonal granite | Balbaqiwula | Highly differentiated type I granitoids/lower crust | island arc | ||
Middle Permian | 268.7 ± 1.8 | Granodiorite | Zhalage | Type I granitoid/newborn lower crust | island arc | |
266.4 ± 1.7 | granitoids | Narendle | Type I granite/newborn lower crust | island arc | This study | |
Late Permian | 255.2 ± 2.0 | granite | Narendle | Type I granitoid /newborn lower crust | island arc | This study |
Triassic | 250 ± 1 | Biotite granite | Mengentaolegai | Edakite/thickened lower crus | Post-Collision Delamination | |
248.5 ± 2.3 | Granodiorite | Jianshetun | Edakite/thickened lower crus | Post-Collision Delamination | ||
245.6 ± 0.9 | Granite | Zhuanshanzi | Type I granitoid/newborn lower crust | Stretching the background | ||
244 ± 2 | Granodiorite | Wunite Ranch | Edakite/thickened lower crust | Post-Collision Delamination | ||
242.9 ± 1.5 | monzonitic granite | Aertala | Type A granitoid | Post-Orogenic Delamination | ||
240 ± 2 | Granite | The Road to Happiness | Edakite/thickened lower crust | Post-Collision Delamination |
