Geophysical metamorphism (1:100,000), Geophysical Interpretation of Contact and Regional Metamorphism Polygon

This dataset displays areas of contact and regional metamorphism, and the style of metamorphism, mapped using using combined interpretations of airborne magnetic, radiometric and gravity survey data at 1:100,000.At scales larger than 1:120,000 the display is a combination of both 1:100,000 and 1:250,000 geophysical mapping. Recent 1:250,000 geophysical mapping has been of such quality and detail it has been used to supersede older coincident 1:100,000 mapping. This occurs in the following areas: St Arnaud 7524, Dunolly 7624, Charlton 7525, Wedderburn 7625 and part of Ararat 7423 are superseded by St Arnaud SJ54-4. Bendigo 7724, Heathcote 7824 and Nagambie 7924 are superseded by Bendigo SJ55-1. Balmoral 7223, Ararat 7423, Horsham SJ54-3 and St Arnaud SJ54-4 supersede Grampians 7323 where there is overlap.This data has been collected by the Geological Survey of Victoria. This dataset is accompanied by other datasets representing geological polygons and boundaries, sub-surface geological polygons, structural lines and miscellaneous lines.

本数据集展示了接触变质区、区域变质区的分布范围与变质作用类型，基于1:10万比例尺的航磁、放射性航测与重力测量数据的综合解译成果编绘而成。当图件比例尺大于1:12万时，成果内容结合了1:10万与1:25万比例尺的地球物理编图成果。近期完成的1:25万地球物理编图因数据质量与细节精度优异，已用于取代与之重叠的旧版1:10万编图成果，具体替换涉及以下区域：圣阿诺德（St Arnaud）7524、邓诺利（Dunolly）7624、查尔顿（Charlton）7525、韦德本（Wedderburn）7625及阿拉拉特（Ararat）7423部分区域，由圣阿诺德SJ54-4取代；本迪戈（Bendigo）7724、希思科特（Heathcote）7824与纳甘比（Nagambie）7924，由本迪戈SJ55-1取代；鲍莫拉尔（Balmoral）7223、阿拉拉特7423、霍舍姆（Horsham）SJ54-3及圣阿诺德SJ54-4，在重叠区域内取代了格兰扁（Grampians）7323的编图成果。本数据集由维多利亚州地质调查局（Geological Survey of Victoria）采集，配套包含其他相关数据集，涵盖地质多边形与边界、地下地质多边形、构造线及杂类线状要素。