Failure to predict igneous rocks encountered during exploration of sedimentary basins : a case study of the Bass Basin, Southeastern Australia

This work was carried out during a research visit to the Australian School of Petroleum at the University of Adelaide, and forms part of the lead author's PhD research, which is funded by a University of Aberdeen College of Physical Sciences Scholarship. Seismic interpretation was conducted using IHS Kingdom, and well log interpretation using Schlumberger Techlog software. Synthetic seismic response modelling was performed using Ikon RokDoc software. This paper greatly benefited from the reviews of Sverre Planke, Kamal'deen Omosanya and an anonymous reviewer.Peer reviewedPostprin

Overpressure transmission through interconnected igneous intrusions

JX Nippon UK Ltd are thanked for PSDM seismic data used in this study. Well data is from the Common Access Database (CDA). IHS Kingdom Software and Schlumberger Petrel Software was used for seismic interpretation. Schlumberger Techlog was used for display of wireline and FMI data. We would like to thank Joe Cartwright, Richard Swarbrick, Clayton Grove and Stephen O’Connor for the constructive and helpful reviews and discussions of this manuscript. PGS are thanked for continued support of the research group at Aberdeen. Barry Katz is thanked for editorial guidance and input.Peer reviewedPublisher PD

Contemporary stress orientations in the Faroe-Shetland region

The Faroe-Shetland Region (FSR) of the NE Atlantic continental margin contains a number of complexly structured Mesozoic-Palaeogene-age rift basins, but in comparison to the contiguous British Isles and North Sea Basin, the state of crustal stress in the FSR is poorly understood. The orientation of maximum horizontal compressional stress (σHmax) across most of NW Europe is ~NW-SE, which is considered to be controlled by forces acting at the plate boundaries. We have determined 16 B-D quality σHmax orientations based on borehole breakouts interpreted in petroleum wells, and define three distinct stress provinces within the FSR. Stress orientations in the NE are ~NW-SE, consistent with the regional pattern of stresses in NW Europe and local neotectonic structural trends. However, contemporary stress orientations in the central and SW of the FSR exhibit short-wavelength (distances <10-50 km) variation, with NE-SW, N-S and E-W orientations that are parallel or sub-parallel to underlying structural trends. This variation is interpreted in terms of stress deflections towards weak faults that downthrow the Mesozoic-Cenozoic sedimentary successions against basement highs. These local-scale sources are superposed on a background ~WNW-ESE σHmax orientation that is controlled by both plate boundary forces and regional-scale sources of stresses

Controls on the Distribution of Volcanism and Intra-Basaltic Sediments in the Cambo-Rosebank Region, West of Shetland

This paper forms part of a NERC Oil & Gas CDT PhD. PGS and TGS are thanked for donation of the FSB2011/12 MultiClient GeoStreamer® Survey without which this research would have been impossible. Stephen Morse is thanked for his constant input and support throughout the project. Chevron North Sea Limited are thanked for their interest and discussions on the Rosebank Field. All views, interpretations and opinion expressed in this article are entirely those of the authors and do not necessarily represent the views, interpretations or opinions of Chevron North Sea Limited. Jonathan Dietz is thanked for fieldwork in Iceland.Peer reviewedPostprin

Emplacement of the Little Minch Sill Complex, Sea of Hebrides Basin, NW Scotland

Acknowledgements The work contained in this paper contains work conducted during a PhD study undertaken as part of the Natural Environment Research Council (NERC) Centre for Doctoral Training (CDT) in Oil & Gas [grant number RG12649-12] and is fully funded by NERC whose support is gratefully acknowledged. We are also grateful to IHS Markit for provision of, and permission to publish an example from their 2D seismic data volumes and gravity and magnetics database, and to Schlumberger for the donation of Petrel seismic interpretation software licences to Aberdeen University. We acknowledge the UKOilandGasData.com website owned by UK National Data Repository administered by Schlumberger, for access to the seismic data volumes and released UK well database. Stephen Jones and Thomas Phillips are thanked for considered and constructive reviews which helped improved and broaden the appeal of the paper. Stephen Daly is thanked for giving helpful editorial steer and comments on how to improve paper. Funding This work was funded by the Natural Environment Research Council (RG12649-12). Dougal Jerram is partly supported by the Research Council of Norway through its Center of Excellence funding scheme, project 223272 (CEED)Peer reviewedPostprin

Failure of interpolation in the intuitionistic logic of constant domains

This paper shows that the interpolation theorem fails in the intuitionistic logic of constant domains. This result refutes two previously published claims that the interpolation property holds.Comment: 13 pages, 0 figures. Overlaps with arXiv 1202.1195 removed, the text thouroughly reworked in terms of notation and style, historical notes as well as some other minor details adde

Structural and lithological controls on the architecture of igneous intrusions : examples from the NW Australian Shelf

N.J Mark's PhD is funded by JX Nippon Exploration and Production (UK) as part of the Volcanic Margin Research Consortium Phase 2. S.P. Holford is supported by ARC Discovery Project DP160101158.Peer reviewedPostprin

Seismic Geomorphology, Architecture and Stratigraphy of Volcanoes Buried in Sedimentary Basins

Our ability to investigate both the intrusive and extrusive parts of individual volcanoes has evolved with the increasing quality of seismic reflection datasets. Today, new seismic data and methods of seismic interpretation offer a unique opportunity to observe the entire architecture and stratigraphy of volcanic systems, with resolution down to tens of meters. This chapter summarises the methods used to extract the geomorphic aspects and spatio-temporal organisation of volcanic systems buried in sedimentary basins, with emphasis on the utility of 3D seismic reflection volumes. Based on descriptions and interpretations from key localities worldwide, we propose classification of buried volcanoes into three main geomorphic categories: (1) clusters of small-volume (5 km3) composite, shield and caldera volcanoes, and (3) voluminous lava fields (>10,000 km3). Our classification primarily describes the morphology, size and distribution of eruptive centres of buried volcanoes, and is independent of parameters such as the magma composition, tectonic setting, or eruption environment. The close correlation between the morphology of buried and modern volcanoes provides the basis for constructing realistic models for the facies distribution of igneous systems buried in sedimentary strata, establishing the principles for a new discipline of seismic-reflection volcanology

Geology and Petroleum Prospectivity of the Sea of Hebrides Basin and Minch Basin, Offshore Northwest Scotland

Funding: This work was funded by the Natural Environment Research Council (RG12649-12). Acknowledgements: The work contained in this paper contains work conducted during a PhD study undertaken as part of the Natural Environment Research Council (NERC) Centre for Doctoral Training (CDT) in Oil and Gas. We are also grateful to IHS Markit for provision of, and permission to publish examples from, their 2D seismic data volumes and gravity and magnetics database, and to Schlumberger for their donation of Petrel seismic interpretation software licences to Aberdeen University. We also thank Geognostics for the kind permission to use the Frogtech Geoscience, 2016 depth to basement map (SEEBASE) of offshore northwest Scotland. We acknowledge the UKOilandGasData.com website, owned by UK National Data Repository administered by Schlumberger, for access to the seismic data volumes and released UK well database. We are also grateful to the UK National Onshore Data Library who kindly provided seismic data (UKOGL request 100891 and 100890) to the University of Aberdeen. Dr. Iain Scotchman and Dr. Clayton Grove are thanked for constructive and helpful reviews, which have improved this paper. Laura-Jane would also like to personally thank the late Professor Bernard Owens, who passed away in July 2019, for his informative discussion on Carboniferous outliers along the west coast early on in her PhD. The views held within this paper do not necessarily represent the views of IHS Markit.Peer reviewedPostprin

Inside the volcano : Three-dimensional magmatic architecture of a buried shield volcano

Acknowledgements: Funding from NERC (Oil and Gas CDT) and BGS is gratefully acknowledged. DAJ and SP are part-funded by the Research Council of Norway Centre of Excellence funding scheme (project No. 223272). TGS is thanked for providing seismic data to the University of Aberdeen. Seismic interpretation was undertaken using Schlumberger Petrel software and gravity modelling using ARK CLS XField software. Thanks go to Steffi Burchardt, Eric Horsman and Christian Eide for constructive reviews which greatly improved the manuscript.Peer reviewedPublisher PD