New insights into multiple provenances evolution of the Jurassic from heavy minerals characteristics in southern Junggar Basin, NW China

Tianqi ZHOU,Chaodong WU,Bo YUAN,Zhongkui SHI,Jialin WANG,Wen ZHU,Yanxi ZHOU,Xi JIANG,Jinyong ZHAO,Jun WANG,Jian MA

Table 1 Characteristics of parent rocks of Jurassic potential provenances in the southern Junggar Basin.

Provenance Age of parent rock/Ma Lithology of parent rock Heavy mineral assemblage North Tianshan 360-420, 250-316 Intermediate acidic-acidic volcanic rock, volcanoclastic rock and tuff Zircon (automorphous)-Tourmaline (pink)- Apatite-Hornblende-Monazite-Mica-Rutile Central Tianshan 320-360, 230-300 Post-collision type A granite, Early Paleozoic volcanic rock and granite Apatite-Zircon-Tourmaline - Magnetite + Titanite 320-485 Medium-high rank metamorphic rock (e.g. metamorphic rock evolved from granite, granite mylonite, granite gneiss), and Pre-Cambrian metamorphic rock Leucoxene-Garnet-Epidote -Muscovite- Zoisite-Sillimanite Bogda Mountains (western) 210-390 Granite, rhyolite and volcanoclastic rock Zircon-Tourmaline -Apatite-Muscovite- Titanite-Ilmenite-Sericite 270-350, 221.0±6.5 Intermediate-basic volcanic rock: basalt and andesitic basalt Magnetite-Ilmenite-Leucoxene-Augite- Olivine-Orthopyroxene -Chlorite-Sericite Zhayier Mountains 220-350 Intermediate acidic-acidic rock matrix: granite, moyite, alkali granite and syenite porphyry Ilmenite + Apatite + Zircon + Apatite + Hornblende 360-425, 472 Ophiolite belt: basalt, ophiolite and gabbro Ilmenite + Chromite Kalamaili Mountains 250-300, 350-380 400-413, 475-520 Intermediate acidic-acidic eruptive rock, volcanoclastic rock; Ophiolite belt: amphibolite Zircon-Tourmaline-Apatite-Magnetite- Titanite-Rutile 300-350, 388-420, 485-510 Ophiolite belt: basalt, diabase and gabbro Magnetite-Augite-Garnet-Chromite- Ilmenite-Zoisite