Oases of the Western Desert of Egypt host numerous geoheritage features. Field investigations in the Farafra Oasis have permitted to establish the presence of brown dolostones occurring in channels incised in the Upper Cretaceous rocks, on slopes of topographic highs, as fills of the karst features, and directly on wide depressions floor. Their origin is linked to carbonate deposition in a palaeolake that existed in the pluvial conditions of the Pleistocene. Such dolostones are rare on regional, national, and even global scales, and, thus, they constitute a high-value geoheritage feature. The latter can be assigned to sedimentary, palaeogeographical, and stratigraphical geoheritage types. The most typical locality of these lacustrine dolostones is North Ain El-Wadi that is proposed as a geosite. This new evidence extends the previous knowledge of the geoheritage of the Farafra Oasis. Although the main utility of the proposed geosite is scientific, this object can also be used for the purposes of geoeducation and geotourism in combination with the other geoheritage resources of the central part of the Western Desert of Egypt.

中文翻译：

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撒哈拉第四纪湖相白云岩：来自法拉夫拉绿洲（埃及）的新地质遗迹证据

埃及西部沙漠的绿洲拥有众多地质遗迹特征。Farafra 绿洲的实地调查已经允许确定棕色白云岩的存在，这些白云岩存在于上白垩统岩石切割的通道中，在地形高坡的斜坡上，作为喀斯特特征的填充物，以及直接在宽阔的洼地底部。它们的起源与存在于更新世雨洪环境中的古湖中的碳酸盐沉积有关。这样的白云岩在区域、国家甚至全球范围内都是罕见的，因此它们构成了高价值的地质遗产特征。后者可归为沉积、古地理和地层地质遗产类型。这些湖相白云岩最典型的产地是北艾因瓦迪，建议作为地质遗址。这一新证据扩展了之前对 Farafra 绿洲地质遗产的了解。尽管拟建地质遗址的主要用途是科学，但该物体也可与埃及西部沙漠中部的其他地质遗产资源结合用于地理教育和地质旅游。