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occurs in the following areas: St Arnaud 7524, Dunolly 7624, Charlton 7525, Wedderburn 7625 and part of Ararat 7423 are superseded by St Arnaud SJ54-4. Bendigo 7724, Heathcote 7824 and Nagambie 7924 are superseded by Bendigo SJ55-1.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作用类型，其基于1:10万比例尺航空磁法、放射性测量与重力勘探数据的联合解译成果编制而成。

当比例尺大于1:12万时，本数据集的展示内容为1:10万与1:25万比例尺地球物理编图的结合成果。近年来的1:25万地球物理编图在质量与精度上均已达标，因此被用于取代旧的同区域1:10万编图，具体涉及以下区域：圣阿诺（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，上述区域的旧编图已由圣阿诺SJ54-4取代；本迪戈（Bendigo）7724、希思科特（Heathcote）7824与纳甘比（Nagambie）7924的旧编图则由本迪戈SJ55-1取代。

巴尔莫勒尔（Balmoral）7223、阿拉拉特7423、霍舍姆（Horsham）SJ54-3及圣阿诺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，同时配套包含其他数据集，涵盖地质多边形与边界、地下地质多边形、构造线及杂项线状要素。