@article{Patruno:2015:10.1111/sed.12153,
author = {Patruno, S and Hampson, GJ and Jackson, CA and Dreyer, T},
doi = {10.1111/sed.12153},
journal = {Sedimentology},
pages = {350--388},
title = {Clinoform geometry, geomorphology, facies character and stratigraphic architecture of a sandrich subaqueous delta: Jurassic Sognefjord Formation, offshore Norway},
url = {http://dx.doi.org/10.1111/sed.12153},
volume = {62},
year = {2015}
}

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TY  - JOUR
AB  - <jats:title>Abstract</jats:title><jats:p>The integration of core sedimentology, seismic stratigraphy and seismic geomorphology has enabled interpretation of deltascale (i.e. tens of metres high) subaqueous clinoforms in the upper Jurassic Sognefjord Formation of the Troll Field. Mudprone subaqueous deltas characterized by a compound clinoform morphology and sandy deltascale subaqueous clinoforms are common in recent tideinfluenced, waveinfluenced and currentinfluenced settings, but ancient examples are virtually unknown. The data presented help to fully comprehend the criteria for the recognition of other ancient deltascale subaqueous clinoforms, as well as refining the depositional model of the reservoir in the supergiant Troll hydrocarbon field. Two 10 to 60 m thick, overall coarseningupward packages are distinguished in the lower Sognefjord Formation. Progressively higher energy, wavedominated or currentdominated facies occur from the base to the top of each package. Each package corresponds to a set of seismically resolved, westerly dipping clinoforms, the bounding surfaces of which form the seismic ‘envelope’ of a clinoform set and the major marine flooding surfaces recognized in cores. The packages thicken westwards, until they reach a maximum where the clinoform ‘envelope’ rolls over to define a topset–foreset–toeset geometry. All clinoforms are consistently oriented subparallel to the edge of the Horda Platform (N005–N030). In the eastern half of the field, individual foresets are relatively gently dipping (1° to 6°) and bound thin (10 to 30 m) clinothems. Core data indicate that these proximal clinothems are dominated by finegrained, hummocky crossstratified sandstones. Towards the west, clinoforms gradually become steeper (5° to 14°) and bound thicker (15 to 60 m) clinothems that comprise mediumgrained, crossbedded sandstones. Topsets are consistently
AU  - Patruno,S
AU  - Hampson,GJ
AU  - Jackson,CA
AU  - Dreyer,T
DO  - 10.1111/sed.12153
EP  - 388
PY  - 2015///
SN  - 0037-0746
SP  - 350
TI  - Clinoform geometry, geomorphology, facies character and stratigraphic architecture of a sandrich subaqueous delta: Jurassic Sognefjord Formation, offshore Norway
T2  - Sedimentology
UR  - http://dx.doi.org/10.1111/sed.12153
UR  - https://doi.org/10.1111/sed.12153
VL  - 62
ER  - 

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