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occurs in the following areas: St Arnaud 7524, Dunolly 7624, Charlton 7525, Wedderburn 7625 and part of Ararat 7423 are superseded by St Arnaud SJ54-4. Bendigo 7724, Heathcote 7824 and Nagambie 7924 are superseded by Bendigo SJ55-1.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.

本数据集基于1:100000比例尺下航空磁法、放射性测量与重力调查数据的联合解译成果编制，展示接触变质与区域变质作用的分布区及变质作用类型。当制图比例尺大于1:120000时，展示内容结合了1:100000与1:250000比例尺的物探编图成果。近年来完成的1:250000比例尺物探编图凭借更优异的质量与细节精度，已取代原有同区域的1:100000比例尺编图成果，具体涉及以下图幅：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成果替代；本迪戈（Bendigo）7724、希思科特（Heathcote）7824与纳甘比（Nagambie）7924图幅，由本迪戈SJ55-1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与圣阿诺德SJ54-4成果将取代格兰扁（Grampians）7323编图成果。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、构造线及其他杂线要素。