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

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.\n\nAt 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occurs in the following areas: St Arnaud 7524, Dunolly 7624, Charlton 7525, Wedderburn 7625 and part of Ararat 7423 are superseded by St Arnaud SJ54-4. Bendigo 7724, Heathcote 7824 and Nagambie 7924 are superseded by Bendigo SJ55-1. \n\nBalmoral 7223, Ararat 7423, Horsham SJ54-3 and St Arnaud SJ54-4 supersede Grampians 7323 where there is overlap.\n\nThis 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与区域变质作用的分布范围及变质样式，基于航空磁法、放射性测量与重力勘探数据的联合解译进行编绘，编绘比例尺为1:100000。

当成图比例尺大于1:120000时，该展示成果为1:100000与1:250000两种地球物理编绘成果的结合体。近期完成的1:250000比例尺地球物理编绘成果在质量与细节精度上均表现优异，可替代原有重合区域的1:100000比例尺编绘成果。具体涉及以下区域：圣阿诺德（St Arnaud）7524、达诺利（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替代；本迪戈（Bendigo）7724、希思科特（Heathcote）7824与纳甘比（Nagambie）7924，则由本迪戈SJ55-1替代。

巴尔莫勒尔（Balmoral）7223、阿拉拉特7423、霍舍姆（Horsham）SJ54-3以及圣阿诺德SJ54-4，在图幅重叠区域内替代了格兰扁（Grampians）7323的编绘成果。

本数据集由维多利亚地质调查局（Geological Survey of Victoria）采集。该数据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、构造线与杂项线要素。