To provide further stratigraphic resolution through the Gustav Group a key section through the Kotick Point, Whisky Bay and Hidden Lake formations, adjacent to Brandy Bay on northern James Ross Island was re-measured and sampled for both Sr isotope stratigraphy and palynostratigraphy. In total, a sedimentary succession about 1600m thick, that encompasses the initial three stages of the Upper Cretaceous period, was measured and a suite of invertebrate macrofossils, palynology samples, palaeobotanical and general lithological samples were collected along the lines of measured samples.