--> Mesozoic Sequences in the Maloy area, Northern North Sea, by M. Skibeli, R. E. Dunay, and T. Jacquin; #90986 (1994).

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Abstract: Mesozoic Sequences in the Maloy area, Northern North Sea

M. Skibeli, R. E. Dunay, T. Jacquin

The evolution of the Mesozoic successions in the Malay area, northern North Sea, (61.3° N lat. to 62.0° N lat., and 3.0° E long. to 4.2° E long.) has been interpreted using a sequence stratigraphic approach to understand the geological evolution of the area, and the areal distribution of the sequences. This study represents an integrated interpretation of high resolution biostratigraphic data, well logs and cores from six wells together with seismic tie lines.

The tectonic elements defining the study area are the Sogn Graben to the west, the Oygarden fault zone to the east, the More Basin to the north and the Horda Platform to the south.

Wells in the Malay area have encountered both Cretaceous and Jurassic sandstone reservoirs. These successions have been very difficult to correlate due to complex tectonic and depositional setting, and low quality seismic sections. Sequence stratigraphy has enhanced the geological understanding of the area and the sequence correlations between wells.

Major flooding events are identified by abundance and diversity peaks on palynological and micropalontological semi-quantitative plots. These flooding events are also chronostratigraphically defined by specific palynomorph and foraminifera assemblages. The flooding events are linked to condensed intervals and sometimes represents 3rd order maximum flooding surfaces, but typically coincide with the 2nd order peak transgressions.

Several 3rd order and 2nd order sequences are recognized within the Cretaceous and Jurassic interval. These sequences have been correlated to the cycle chart generated by T. Jacquin, et al. (1993) for the European basins.

AAPG Search and Discovery Article #90986©1994 AAPG Annual Convention, Denver, Colorado, June 12-15, 1994