Cretaceous Sandstone Slide

Cretaceous sandstone thin section slide exhibiting the well sorted, fine and rounded nature of this arenaceous sandstone. In hand specimen the rock is yellow to buff in colour and it is quite soft , friable & flaggy in places & so is extracted mainly for concreting & building sand. It is from the Wealen Group (Hastings sub-group) of the Lower Cretaceous, approximately 100 Mya and large scale cross bedding indicative of fast flowing tidal currents can be identified. Although such structures cannot be seen in thin section, the slide allows for a more detailed grain analysis to be delivered in order to provide a more accurate transportation and diagenetic history for the sediment. The slides are 30 microns thick and measure 46 x 27 mm in size and have a cover slip of the section along with a protective cardboard sleeve.