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occurs in the following areas: St Arnaud 7524, Dunolly 7624, Charlton 7525, Wedderburn 7625 and part of Ararat 7423 are superseded by St Arnaud SJ54-4. Bendigo 7724, Heathcote 7824 and Nagambie 7924 are superseded by Bendigo SJ55-1.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类型，其基于1:10万比例尺的航空磁法、放射性测量与重力测量数据联合解译成果完成填图。当比例尺大于1:12万时，该数据集的展示内容为1:10万与1:25万地球物理填图的结合成果。近期完成的1:25万地球物理填图因数据质量与细节精度达标，已用于替代原有同区域的1:10万填图成果，涉及区域如下：斯图阿诺（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的部分区域，其原有填图成果均由斯图阿诺SJ54-4的填图成果替代。本迪戈（Bendigo）7724、希思科特（Heathcote）7824与纳甘比（Nagambie）7924的原有填图成果，则由本迪戈SJ55-1的填图成果替代。当存在区域重叠时，巴莫拉尔（Balmoral）7223、阿拉拉特7423、霍舍姆（Horsham）SJ54-3与斯图阿诺SJ54-4的填图成果将替代格兰扁（Grampians）7323的原有成果。本数据集由维多利亚地质调查局（Geological Survey of Victoria）采集。本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、构造线及杂项线条等数据图层。