New progress of geology and mineral resources mapping in Oceania
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摘要:
介绍了大洋洲地区编图方面的新进展。项目组编制出版了《大洋洲地区地质图》（1：250万）及《大洋洲地区金属矿产图》（1：250万）。在图件说明书中将大洋洲地区原来的3个一级构造单元重新划分为4个一级构造单元，强化了巴布亚新几内亚-新西兰造山系中生代构造单元的重要性，与西南太平洋岛弧区新生代构造单元分开。将4个一级构造单元进一步细化为12个二级构造单元和42个三级构造单元，编制对应的地层柱状图、侵入岩序列图。根据大洋洲各构造单元的成矿特征划分了相应的成矿区带，将大洋洲地区分为4个一级成矿系列，即中西澳陆块区前寒武纪克拉通成矿系列、东澳古生代造山系成矿系列、巴布亚新几内亚-新西兰中生代岛弧成矿系列、西南太平洋新生代多岛弧盆系成矿系列，对各个成矿系列的地质矿产特征进行了总结。
Abstract:This paper mainly deals with new progresses that have been made in the map compilation of Oceania. The research party has compiled The Geological Map of Oceania region (1:2500000) and The Metallic Mineral Map of Oceania (1:2500000). In the manual of the map, the authors re-divided the original three primary tectonic units of Oceania into four primary tectonic units, highlighted the importance of Mesozoic tectonic units in the Papua New Guinea-New Zealand orogenic system, and separated them from the Cenozoic tectonic unit of southwest Pacific island arc. The four primary tectonic units were redefined into 12 secondary tectonic units and 42 third-level units, and the corresponding stratigraphic column graphs and intrusive sequence diagrams were prepared. The tectonic evolution of Oceania was described in this paper. According to the metallogenic characteristics of corresponding mineralization belts, the Oceania region was divided into 4 metallogenic domains, i.e., the central-western Australia continental Precambrian cratonic metallogenic domain, the eastern Australia Paleozoic orogenic metallogenic domain, the Papua New Guinea-New Zealand Mesozoic island arc metallogenic domain and the southwestern Pacific Cenozoic archipelagic arc-basin system metallogenic domain. This paper also summarized the geological and mineral resource characteristics of each metallogenic belt.
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Key words:
- Oceania /
- geology and mineral resources /
- tectonic units /
- metallogenic series
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表 1 大洋洲地区构造单元划分
Table 1. Tectonic units of Oceania area
一级 二级 三级 Ⅰ中西澳(Centralwestern Australia)陆块区 Ⅰ-1西澳(West Australia)陆块 Ⅰ-1-1皮尔巴拉(Pilbara)古陆核(Ar-Pt1) Ⅰ-1-2南回归线(Capricorn)基底杂岩带(Pt1) Ⅰ-1-3伊尔岗(Yilgarn)古陆核(Ar-Pt1) Ⅰ-1-4平贾拉(Pinjarra)陆缘盆地(Pt2) Ⅰ-2北澳(North Australia)陆块 Ⅰ-2-1金伯利(Kimberley)陆缘盆地(Pt1) Ⅰ-2-2金利奥波德-霍尔斯克里克(King leopold-Halls Creek)基底杂岩带(Pt1) Ⅰ-2-3派恩克里克(Pine Creek)古陆核(Pt1) Ⅰ-2-4塔纳米(Tanami)基底杂岩带(Pt1) Ⅰ-2-5滕南特克里克(Tennant Creek)基底杂岩带(Pt1) Ⅰ-2-6阿伦塔(Arunta)基底杂岩带(Pt1) Ⅰ-2-7芒特艾萨(Mount Isa)基底杂岩带(Pt1) Ⅰ-2-8麦克阿瑟(McArthur)陆缘盆地(Pt1) Ⅰ-2-9乔治敦-科恩(Georgetown-Coen)基底杂岩带(Pt1) Ⅰ-2-10北澳(North Australia)陆表盆地(Pt1) Ⅰ-3南澳(South Australia)陆块 Ⅰ-3-1高勒(Gawler)古陆核(Ar-Pt1) Ⅰ-3-2柯纳莫纳(Curnamona)古陆核(Pt1) Ⅰ-3-3阿德莱德(Adelaide)陆内裂谷(Pt2) Ⅰ-3-4南澳(South Australia)陆表盆地(Pz) Ⅰ-4中澳(Central Australia)接合带 Ⅰ-4-1派特森(Paterson)基底杂岩带(Ar) Ⅰ-4-2玛斯格雷夫(Musgrave)基底杂岩带(Pt2) Ⅰ-4-3阿尔巴尼-弗雷泽(Albany-Fraser)基底杂岩带(Pt2) Ⅰ-4-4中澳(Central Australia)陆表盆地(Pt3) Ⅱ东澳造山系
(Eastern Australian Orogen)Ⅱ-1德拉梅里亚(Delamerian Orogen)弧盆系(Pt3-Pz) Ⅱ -2拉克兰(Lachlan)
弧盆系Ⅱ-2-1拉克兰西部(Western Lachlan)弧后盆地(Pz) Ⅱ-2 -2拉克兰中部(Central Lachlan)增生杂岩带(Pz) Ⅱ-2-3拉克兰东部(Eastern Lachlan)增生杂岩带(Pz) Ⅱ-3新英格兰(New England)弧盆系 Ⅱ-3-1新英格兰西部(Western New England)弧陆碰撞带(Pz) Ⅱ-3-2新英格兰中部(Central New England)弧前盆地(Pz) Ⅱ-3-3新英格兰东部(Eastern New England)变质增生杂岩带(Pz) Ⅱ-4北昆士兰(North Queensland)弧盆系 Ⅱ-4-1霍奇森(Hodgkinson)弧后盆地(Pz) Ⅱ-4-2格林维尔(Greenvale)增生杂岩带(Pt3-Pz) Ⅱ-4-3布洛肯溪(Broken River)弧前盆地(Pz) Ⅱ-4-4查特斯堡(Charters Towers)弧后盆地(Pz) Ⅱ-4-5巴纳德(Barnard)弧后盆地(Pt3-Pz) Ⅱ-5汤姆森(Thompson)弧盆系(Pt3-Pz) Ⅲ巴新-新西兰
(Papua New Guinea-New Zealand)造山系Ⅲ-1新西兰(New Zaeland)接合带 Ⅲ-1-1新西兰西部(Western New Zealand)前陆盆地(Mz) Ⅲ-1-2新西兰东部(Eastern New Zealand)俯冲增生杂岩带(Mz) Ⅲ-2巴布亚新几内亚
(Papua New Guinea)
接合带Ⅲ-2-1弗莱陆缘盆地(Mz) Ⅲ-2-2巴新中央弧陆碰撞带(Mz) Ⅳ西南太平洋
(Southwestern Pacific)多岛弧盆系Ⅳ-1新生代
(Cenozoic)岛弧区Ⅳ-1-1新几内亚群岛(New Guinea archipelagic)岩浆弧(Cz) Ⅳ-1-2所罗门群岛(Solomon archipelagic)岩浆弧(Cz) Ⅳ-1-3瓦努阿图群岛(Vanuatu Archipelagic)岩浆弧(Cz) Ⅳ-1-4斐济群岛(Fiji archipelagic)岩浆弧(Cz) Ⅳ-1-5新喀里多尼亚岛(New Caledonia Island)蛇绿混杂岩带(Cz) 
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