Harris Greenstone Belt GIS Dataset

The Harris Greenstone Domain (HGD) is a late Archean-Proterozoic arcuate tectnostratigraphic terrane in the centre of the Gawler Craton. It is bound to the south by the Yerda Shear Zone and has a lithological zone boundary to the north with the Wilgena Domain. The basement comprises Archean ultramafic-mafic extrusives (Lake Harris Komatiite), aluminous metasediments (Christie Gneiss), felsic extrusives and intrusives (Kenalla Gneiss), felsic intrusives (Glenroth Granite), and Proterozoic felsic intrusives (Hiltaba Suite Granite, St Peter Suite), felsic and mafic extrusives (Gawler Range Volcanics), and fluvial-marine sedimentary rocks (Tarcoola Formation, Pandurra Formation).The HGD is characterised by a series of sub-parallel east-northeast trending sinuous magnetic high features flanked by large ovoid to elongate magnetic highs and lows. The prominent narrow magnetic highs constitute the Archean Harris Greenstone Belt (HGB). Rock types in this poorly exposed belt include komatiite, komatiitic basalt, tholeiitic basalt, and subordinate banded iron formation, metasediments, felsic volcanics, and pyroclastics metamorphosed to amphibolite facies during the Sleafordian Orogeny at ~2440 Ma. The Lake Harris Komatiite, which represents the most eastern occurrence of komatiite in Australia, has potential for Ni-Cu-PGE sulphide and lode-Au mineralising systems. The prospective greenstone sequence is covered by thin (

哈里斯绿岩地体（Harris Greenstone Domain, HGD）是高勒克拉通（Gawler Craton）中部的晚太古代-元古宙弧形构造地层地体。其南侧以耶尔达剪切带（Yerda Shear Zone）为界，北侧与威尔吉纳地体（Wilgena Domain）以岩性带边界分隔。基底包括晚太古代超镁铁质-镁铁质喷出岩（哈里斯湖科马提岩Lake Harris Komatiite）、富铝变质沉积岩（克里斯蒂片麻岩Christie Gneiss）、长英质喷出岩与侵入岩（凯纳拉片麻岩Kenalla Gneiss）、长英质侵入岩（格伦罗思花岗岩Glenroth Granite），以及元古宙长英质侵入岩（希尔塔巴套花岗岩Hiltaba Suite Granite、圣彼得套岩体St Peter Suite）、长英质与镁铁质喷出岩（高勒岭火山岩Gawler Range Volcanics），还有陆源-海相沉积岩（塔库鲁组Tarcoola Formation、潘杜拉组Pandurra Formation）。
哈里斯绿岩地体以一系列近平行、北东向展布的蜿蜒磁异常高值区为特征，其两侧伴生大型卵形至伸长状的磁异常高低值区。其中显著的狭窄磁异常高值区即为晚太古代哈里斯绿岩带（Archean Harris Greenstone Belt, HGB）。该出露条件较差的绿岩带内的岩石类型包括科马提岩（komatiite）、科马提岩玄武岩（komatiitic basalt）、拉斑玄武岩（tholeiitic basalt），以及少量条带状含铁建造（banded iron formation）、变质沉积岩、长英质火山岩和火山碎屑岩（pyroclastics），这些岩石在约24.4亿年前的斯利弗德造山运动（Sleafordian Orogeny）中变质至角闪岩相（amphibolite facies）。哈里斯湖科马提岩是澳大利亚境内科马提岩分布最东端的露头，具备镍-铜-铂族元素（Ni-Cu-PGE）硫化物矿床与脉金（lode-Au）成矿系统的成矿潜力。这套具有成矿远景的绿岩序列被薄层（