NORTH SEA CORE DATA
We recognise the importance of having access to both physical and digital geoscience data. In addition to making core material available, we hope to make more data available for download in time. Please contact us if you with any questions regarding our online material or if you are interested in something we have not yet made available for download.
North Sea Core data is licensed under a CC-BY-4.0 License. Please credit North Sea Core for any material used.
CT SCANS OF CORE SAMPLES
There are many ways to analyse core samples, each with different purposes. Computerised Tomography (CT) scans are more commonly used in medicine but can be used as a non-destructive tool to image core material. Powerful x-ray photons create a 3D model where dense material appear brighter and less dense material appear dull. CT scans can be used to investigate pore networks, fractures, sedimentary bedding and more.
The resolution of the CT scans is 300 microns per slice thickness, with data produced by Core Specialist Services.
All videos and images are downloadable. Videos produced by North Sea Core. End credits by Studio No. 7.
Photos of the various core samples used in the CT scans available for download.
UPPER JURASSIC OOLITIC LIMESTONE
This sample of oolitic limestone from the Upper Jurassic is from the Southern North Sea (Well 48/11b-5). It is composed of bioclasts (shell fragments) and oolites. It is interpreted to have been deposited in a shallow marine or lagoonal environment, where calcium carbonate was able to build up on the surface of sand grains rolling back and forth on the sea floor.
The CT scan shows the gradual removal of the slightly less dense, carbonate-rich, fine grained lime mud until only the denser, carbonate oolites and shell fragments remain.
MIDDLE JURASSIC BROOM FORMATION
This sample of sandstone from the Middle Jurassic Broom Formation is from the Northern North Sea (Well 211/23-A18). The sandstone is coarse grained with many carbonate fragments. It is interpreted to have been deposited in a marine fan delta system.
The CT scan shows the gradual removal of the less dense sand material, leaving behind the denser carbonate material. These are most likely shell fragments that were transported with the sand into the basin.