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 (

哈里斯绿岩域（Harris Greenstone Domain, HGD）是位于Gawler克拉通（Gawler Craton）中部的新太古代-元古代弧形构造地层地体。其南侧以Yerda剪切带（Yerda Shear Zone）为界，北侧与Wilgena域（Wilgena Domain）以岩性带边界分隔。基底岩系包括太古代超镁铁质-镁铁质喷出岩（Lake Harris科马提岩，Lake Harris Komatiite）、富铝变沉积岩（Christie片麻岩，Christie Gneiss）、长英质喷出岩与侵入岩（Kenalla片麻岩，Kenalla Gneiss）、长英质侵入岩（Glenroth花岗岩，Glenroth Granite），以及元古代长英质侵入岩（Hiltaba套花岗岩，Hiltaba Suite Granite、St Peter套花岗岩，St Peter Suite）、长英质与镁铁质喷出岩（Gawler Range火山岩，Gawler Range Volcanics），还有河流-海洋沉积岩（Tarcoola组，Tarcoola Formation、Pandurra组，Pandurra Formation）。HGD以一系列近于平行的北东向蜿蜒磁异常高值带为典型特征，其两侧分布有大型卵形至伸长形的磁异常高低值区。这些显著的狭窄磁异常高值带即为太古代哈里斯绿岩带（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）、科马提岩质玄武岩、拉斑玄武岩，以及少量条带状铁建造、变沉积岩、长英质火山岩和在约2440 Ma的斯利福德造山运动（Sleafordian Orogeny）中变质至角闪岩相的火山碎屑岩。Lake Harris科马提岩是澳大利亚境内科马提岩分布最东端的产出体，具备形成Ni-Cu-PGE硫化物矿床与脉状金矿化系统的潜力。这套具有找矿前景的绿岩序列被薄层（