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The exposed Jurassic succession in East and North-East Greenland has long been presented as an analogue for equivalent deeply buried strata on the Norwegian conjugate shelf and offshore North East Greenland. In particular, the Upper Jurassic marine mudstone succession is often ascribed source-rock potential as proven from coeval rocks on the Northwest European margin. Previous outcrop investigations have not convincingly confirmed this potential, however, and three boreholes were drilled between 2008 and 2010 to provide full coverage of the Upper Jurassic - Lower Cretaceous petroleum source-rock succession in eastern Greenland. The Blokely-1 borehole was drilled in 2008 in central Jameson La...
This book summarizes new discoveries on fracturing in chalk. Based on studies on the Danish North Sea, this book shows how observations from outcrop analogues, core and seismic data can be used to characterize the density, distribution and geometry of natural fractures in chalk and marl. Laboratory experiments on chalk samples reveal the controls on the geomechanical properties of chalk and thus on the growth of natural fractures. Finally, various modeling techniques are employed to investigate the mechanical deformation in the chalk structures of the Danish North Sea and to predict fracture distribution and geometry in the subsurface. An understanding of fracture density, distribution and geometry is essential for planning efficient fluid extraction or injection strategies and CO2 sequestration. This book provides the necessary knowledge.
The Jurassic sedimentary succession in East and North-East Greenland reflects deposition during the early stages of rifting between Greenland and Norway. Jurassic sediments are exposed over a distance of more than 600 km, from Jameson Land in the south to Store Koldewey in the north, and form one of the best-known exposed ancient rift successions. This collection of papers deals with stratigraphic and depositional aspects of the Middle-Upper Jurassic sediments from isolated and less well-known localities outside the main outcrop areas.
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