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occurs in the following areas: St Arnaud 7524, Dunolly 7624, Charlton 7525, Wedderburn 7625 and part of Ararat 7423 are superseded by St Arnaud SJ54-4. Bendigo 7724, Heathcote 7824 and Nagambie 7924 are superseded by Bendigo SJ55-1.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与区域变质作用分布区以及变质作用类型，其编图基于1:100,000比例尺的航空磁测、放射性测量与重力测量数据的综合解译成果。当图件比例尺大于1:120,000时，展示内容将结合1:100,000与1:250,000两种比例尺的地球物理编图成果。近期完成的1:250,000地球物理编图因其优质的成果与精细的细节，已被用于取代同一区域内老旧的1:100,000比例尺编图。下述区域已完成此项替换：圣阿诺（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SJ54-4编图取代；本迪戈（Bendigo）7724、希思科特（Heathcote）7824与纳甘比（Nagambie）7924则由本迪戈SJ55-1编图取代。在重叠区域内，巴莫拉尔（Balmoral）7223、阿拉拉特7423、霍舍姆（Horsham）SJ54-3以及圣阿诺SJ54-4编图将取代格兰扁（Grampians）7323编图。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、构造线以及杂项线要素。