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Hydrogeology of the Melbourne Area

机译:墨尔本地区的水文地质

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The hydrogeology of the Melbourne Area is complex. The area includes the Tertiary Port Phillip Basin and the underlying and surrounding older predominantly Siluro-Ordovician bedrock and Devonian granitic rocks. The Port Phillip Basin contains a system of aquifers separated by aquitards. The aquifers are varyingly hydraulically interconnected. The Werribee and Bridgewater formations are the most productive aquifers. Important aquifers occur in the Brighton Group, basalts of both the Older Volcanics and Newer Volcanics, and deltaic deposits of the Werribee and Yarra rivers. Knowledge of groundwater occurrence, aquifer types and hydraulic parameters, and groundwater chemistry is critical for most if not all civil engineering projects. This paper provides an overview of the hydrogeology of the Melbourne area. The location of major aquifers (and aquitards) is broadly mapped, aquifer types are identified and hydraulic parameters and groundwater chemistry in the different hydrostratigraphic units summarized. It is emphasized that the information provided is very generalized and that more detailed information based on local and site specific investigations are required to fully assess the impact of groundwater on proposed civil engineering projects and the impact of proposed projects on groundwater.
机译:墨尔本地区的水文地质很复杂。该地区包括第三纪菲利普盆地和下层及周围较旧的主要为志留-奥陶纪的基岩和泥盆纪的花岗岩。菲利普港湾盆地包含一个由阿奎德分开的含水层系统。含水层以液压方式相互连接。 Werribee和Bridgewater地层是生产力最高的含水层。重要的含水层出现在布莱顿群,旧火山和新火山的玄武岩以及韦里比河和雅拉河的三角洲沉积物中。对于大多数(如果不是全部)土木工程项目,了解地下水的发生,含水层类型和水力参数以及地下水的化学性质至关重要。本文概述了墨尔本地区的水文地质。广泛地绘制了主要含水层(和无水层)的位置,确定了含水层类型,总结了不同水文地层单位中的水力参数和地下水化学。需要强调的是,所提供的信息非常笼统,需要基于当地和特定地点的调查获得更详细的信息,以充分评估地下水对拟建土木工程项目的影响以及拟议项目对地下水的影响。

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