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occurs in the following areas: St Arnaud 7524, Dunolly 7624, Charlton 7525, Wedderburn 7625 and part of Ararat 7423 are superseded by St Arnaud SJ54-4. Bendigo 7724, Heathcote 7824 and Nagambie 7924 are superseded by Bendigo SJ55-1.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作用与区域变质作用的分布区域及变质作用类型，基于1:10万航空磁法、放射性与重力测量数据的联合解译完成编绘。当比例尺大于1:12万时，展示内容整合了1:10万与1:25万的地球物理编绘成果。近期完成的1:25万地球物理编绘成果因具备更优的精度与细节表现，已替代与之重合的早期1:10万编绘成果，具体替代范围如下：圣阿诺德（St Arnaud）7524、邓诺利（Dunolly）7624、查尔顿（Charlton）7525、韦德本（Wedderburn）7625以及阿拉拉特（Ararat）7423的部分区域，均由圣阿诺德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；存在重叠区域的巴尔莫勒尔（Balmoral）7223、阿拉拉特7423、霍舍姆（Horsham）SJ54-3及圣阿诺德SJ54-4，则取代了格兰扁（Grampians）7323的对应区域。本数据集由维多利亚地质调查局（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、构造线及杂项线要素。