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occurs in the following areas: St Arnaud 7524, Dunolly 7624, Charlton 7525, Wedderburn 7625 and part of Ararat 7423 are superseded by St Arnaud SJ54-4. Bendigo 7724, Heathcote 7824 and Nagambie 7924 are superseded by Bendigo SJ55-1.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作用与区域变质作用的分布范围及变质作用类型，其基于1:100000比例尺的航空磁法、航空放射性测量与重力测量数据的联合解译成果绘制而成。

当地图比例尺大于1:120000时，本数据集的展示内容为1:100000与1:250000比例尺地球物理填图的融合成果。近年完成的1:250000比例尺地球物理填图因其优异的精度与细节表现力，已用于替代原有重合区域的1:100000比例尺填图成果。此类替代涉及以下区域：斯阿诺（St Arnaud）7524、达诺利（Dunolly）7624、查尔顿（Charlton）7525、韦德本（Wedderburn）7625及阿拉拉特（Ararat）7423的部分区域，上述区域的原有填图已由斯阿诺SJ54-4成果替代；本迪戈（Bendigo）7724、希思科特（Heathcote）7824与纳甘比（Nagambie）7924区域的原有填图则由本迪戈SJ55-1成果替代。

巴尔莫勒尔（Balmoral）7223、阿拉拉特7423、霍舍姆（Horsham）SJ54-3与斯阿诺SJ54-4的填图成果，在重叠区域内替代了格兰扁（Grampians）7323的原有填图成果。

本数据集由维多利亚地质调查局（Geological Survey of Victoria）采集，同步配套的其他数据集涵盖地质多边形与边界、地下地质多边形、构造线及杂项线要素。