Source Rock Development in an Evolving Half Graben: Upper Jurassic-Lower Cretaceous of Wollaston Forland, Northeast Greenland. Report Supplement to Rødryggen-1 and Brorson Halvø-1 Data Packages

This report supplement presents integration of selected data sets of the Rødryggen-1 and Brorson Halvø-1 core data packages. The report is delivered to the participating sponsoring companies of the specific analytical programs of the above mentioned cores as described in Appendixes B2 and B3 in the collaboration agreement between GEUS and sponsoring oil companies regarding petroleum geological studies, services and data in East and Northeast Greenland.

The Rødryggen-1 and Brorson Halvø-1 cores were drilled in northern Wollaston Forland, NE Greenland, in 2009 and 2010, respectively. The Brorson Halvø-1 drill site is situated approximately 10 km to the NE from the Rødryggen-1 drill site, being located near the elevated hanging wall crest of the Permpas/Hühnerbjerg fault block (Fig. 1; Surlyk, 1978), whereas the Rødryggen-1 is located near the basin centre of the same block. The main target of the drilling in both cores was the same Kimmeridgian–Ryazanian black mudstone succession with the primary objective being to delineate the quality and lateral development of the Upper Jurassic – Lower Cretaceous source rock in an evolving half-graben system in the Wollaston Forland area.

In this report supplement, the source rock data and basin development are summarized chronostratigraphically. In addition, estimated relative sea level trend and three palaeo-geographical models are presented, which represent the Kimmeridgian, the Early Volgian and the Middle Volgian–Ryazanian tectonic and palaeoenvironmental development in the Wollaston Forland area. The data are supplemented by unpublished (Appendix 6.3) and published field data.