Manuel Vieira

Manuel Vieira
Lundin Norway · Exploration

PhD

About

56
Publications
20,319
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405
Citations
Introduction
Manuel Vieira currently works at Lundin Energy Norway as a Senior Biostratigrapher Stratigrapher supporting the exploration teams working in the Norwegian continental shelf. Also an active member of GEOBIOTEC (Portugal). Manuel does research in Biogeography, Paleoclimatology, taxonomy and paleoenvironment.
Additional affiliations
September 2019 - present
Shell U.K. Limited
Position
  • Senior Stratigrapher
May 2013 - August 2019
Shell U.K. Limited
Position
  • Stratigrapher
January 2009 - April 2013
Ichron Ltd
Position
  • Palinologist
Education
November 2004 - November 2008
University of Minho
Field of study
  • Geology - Palynology

Publications

Publications (56)
Article
A stable carbon isotope (δ¹³C) profile of the Early Cretaceous to Paleogene (Berriasian – Danian) was generated from ditch-cuttings material recovered from well 30/2a-7, Central North Sea. The profile of δ¹³C values was integrated with calcareous nannofossil biostratigraphy and sequence stratigraphy from the Cromer Knoll Group to provide an integra...
Article
Among the predicted responses to ongoing climate warming is that coastal and inland areas may experience increasingly extreme weather, with potentially more droughts and floods. Such changes will have corresponding impacts on sedimentary systems. The Paleocene-Eocene thermal maximum (PETM, ∼56 Ma) was the most abrupt extreme warming event of the Ce...
Article
The Late Cretaceous and Paleogene sediments of the Norwegian continental shelf are rich and diverse in fossil dinoflagellate cysts. The assemblages are generally well-preserved which allow high resolution biostratigraphical studies and sometimes identify new species with chronostratigraphic significance. This paper proposes the formal description o...
Article
Full-text available
The fossil record of Lythrum is scarce and every new find brings an extra piece of the puzzle to the obscure phytogeographic history of this genus. Lythrum pollen is unique and has the potential to be recognized in palynological assemblages. Therefore, the few pre-Holocene fossil records are all pollen described from North America, Russia, and Euro...
Article
This work presents high-resolution palynological and micropalaeontological analyses of a cored succession across the upper Maastrichtian from a well in the Møre Basin (Norwegian continental shelf). Diverse assemblages of dinoflagellate cysts and foraminifera provide insights into the palaeobiogeography and palaeoenvironmental conditions during the...
Article
High-pressure/high-temperature wells are traditionally very challenging for biostratigraphical analyses. The temperatures achieved cause the organic matter to become highly mature and palynomorphs are altered, to an extent that can make identification extremely challenging. This study compares two wells and shows that the type of drilling bit and t...
Article
A highly resolved record of stable carbon isotope values (δ13C) of the Late Cretaceous to Palaeogene (Cenomanian – Danian) was generated from ditch-cuttings material recovered from the Shearwater A9 hydrocarbon production well, Shearwater Field, Central North Sea. The profile of δ13C values was integrated with calcareous nannofossil and foraminifer...
Article
Full-text available
A new species of dinoflagellate cyst, Desmocysta hadra sp. nov., is described from the early Campanian (Late Cretaceous) in the Norwegian Sea. This new taxon differs from the other three known species by its particularly robust but highly folded wall and the short, fine filaments arising from the antapex. The short stratigraphic range of early Camp...
Article
The Cenozoic of the North Sea is among the best documented stratigraphical successions in the world, and multiple palynological events have been recognised for chronostratigraphical control across the region. The ever-increasing number of wells studied for hydrocarbon exploration and production results in the generation of new biostratigraphical da...
Article
The Paleogene Sele Formation spans across the basinal areas of the UK Central North Sea and comprises a very laterally extensive deep-marine fan system, namely the Forties Sandstone Member, a very important oil and gas reservoir horizon. The development of this turbidite system across the basin floor resulted from the response to sea-level changes...
Article
The section of São Pedro da Torre (NW Portugal) is relevant because its rich pollen content, chronologically correlated to the late Pliocene assemblages of the reference section of Rio Maior. The purpose of this study was to carry out, for the first time in the area, a taxonomic analysis of the carpological remains and integrate the results with th...
Article
This paper presents the high resolution biostratigraphic zonation scheme for the Paleocene of the Central North Sea area (UK) and the application to formation characterization, well correlation, reservoir modelling and wellsite activities. The scheme is developed from detailed and consistently recorded palynological events, supported by microfossil...
Article
This article presents the formal description of three dinoflagellate cyst species recovered from Selandian sediments in the Faroe-Shetland Basin and offshore Norway. These species have been recognized informally by the regional biostratigraphy community to support the sequence stratigraphic subdivision of Paleocene sediments and used as intra-Selan...
Article
The Rio Maior deposits, part of the Tagus Basin located in western Portugal, are comprised of sediments from late Pliocene to earliest Gelasian age. Using combined light and scanning electron microscopy, we report, for the first time, nine important taxa in late Pliocene, Piacenzian sediments from south-western Europe. Eight pollen-taxa (Cercidiphy...
Article
X-Ray Fluorescence (XRF) data from a series of high-pressure, high-temperature (HPHT) wells drilled in the Shearwater Field, UKCS are presented. These data comprise a total of 789 samples across a series of eight study wells. Chemical stratigraphy was utilised in conjunction with other geological data (i.e. well logs, ditch cutting descriptions...
Article
This paper presents the formal description of Impagidinium obscurum sp. nov. from Thanetian deposits of northwest Europe. The palaeogeographic distribution of this species covers a wide area, ranging from the North Sea to the Barents Sea. Palynologists working in the region have long referred to Impagidinium obscurum sp. nov. as Leptodinium? “obscu...
Article
Industrial palynological studies of the Paleocene of North Sea and Norwegian Sea basins over several decades have led to the consistent recognition of six distinctive species of organic-walled dinoflagellate cyst genus Spiniferites. These species, however, have not previously been formally described, a situation that we remedy herein. Hence, we pro...
Article
Three dinoflagellate cysts species are formally described from Selandian and Danian sedimentary rocks of the North Sea and Norwegian Sea. The taxa are well known within the regional biostratigraphy community as important age markers, but have never been formally described. Thalassiphora lacunata sp. nov. differs from Thalassiphora delicata by posse...
Conference Paper
Full-text available
In the North Sea Basin, the use of dinoflagellate cysts in the oil and gas industry has become an extremely useful tool in the development of robust and multi-disciplinary biostratigraphic schemes. In some sequences they can now provide higher stratigraphic resolution than calcareous microfossils. During the initial stages of exploration and field...
Article
Link: https://authors.elsevier.com/a/1Wbbe73NzqmPp Using a revised chronology, a new palynological study on the late Pliocene (Piacenzian and earliest Gelasian) Rio Maior site of the Tagus Basin in western Portugal has been undertaken from the F98 core. Combining light microscopy and scanning electron microscopy, a total of 127 different pollen a...
Conference Paper
Full-text available
The Ormen Lange field is located in the Møre Basin, Norwegian Continental Shelf. The reservoir interval comprises deep marine turbidite deposits of Late Cretaceous (Maastrichtian) to Early Paleocene (Danian) age. Across the Ormen Lange field, high-resolution palynological studies been performed, targeting the intra-reservoir shales and siltstones....
Article
Full-text available
A high-resolution palynological study of a recently acquired core from the southern part of the Ormen Lange field (Norway) over the Danian-aged reservoir interval revealed rich, diverse and well-preserved palynomorph assemblages. Review of these assemblages has allowed the opportunity to formally describe some dinoflagellate cysts previously left i...
Article
Spore and pollen (sporomorph) assemblages from Middle Jurassic marine deposits of the Brent Group in the northern North Sea are investigated to assess temporal and spatial variations in vegetation and depositional processes. Four wells were sampled for palynology from the Penguins Cluster and the Don North East fields through the Rannoch Formation...
Conference Paper
High pressure – High Temperature (HPHT) conditions can pose a number of challenges in drilling operations necessitating careful well-planning and the acquisition of robust real-time data in order to reduce uncertainty and to ensure effective well delivery. We present here data from a series of HPHT wells drilled in the Shearwater Field, UKCS, where...
Conference Paper
Full-text available
Study is focused on a Shell-operated Central North Sea field where significant thickness of reservoir sands are assigned to the Late Palaeocene (Thanetian) Forties Sandstone Member of Knox and Holloway (1992). Despite the high net to gross of the system, a high level of stratigraphic resolution can be achieved using a combination of marine and non-...
Conference Paper
The Late Jurassic to Early Cretaceous deposits of the Eastern Gulf of Mexico (EGoM) are one of the world’s major hydrocarbon reserves. However, there is a distinct lack of published studies on dinoflagellate cysts from these strata. This research aims to fill that data gap and produce a higher resolution dinoflagellate cyst biostratigraphy from dat...
Conference Paper
Full-text available
The Paleocene to Eocene Sele Formation is developed in the basinal region of the Central North Sea and consists of four deep-sea fan complexes; the Forties, Bittern, Cromarty, and Gannet fans. The Forties Fan is the most extensive, and is characterized as a mixed mud-sand, rampsourced system. The proximal part of the fan comprises channel complexes...
Article
Full-text available
The Paleocene–Eocene-aged Sele Formation is developed across the basinal region of the Central North Sea. The section comprises a number of deep-marine fan systems that expanded and contracted across the basin floor in response to relative sea-level changes on the basin margin and fluctuating sediment yield off the Scottish landmass modulated by cl...
Conference Paper
The Shell Group, as a global hydrocarbon player, maintains a steady investment into the maturing of technical staff who study subsurface geology. With the need to drill for hydrocarbons in increasingly challenging settings, coinciding with many fields reaching “maturity”, there is a greater need to employ “specialist geologists”, such as biostratig...
Conference Paper
Full-text available
The Shell Group, as a global hydrocarbon player, maintains a steady investment into the maturing of technical staff who study subsurface geology. With the need to drill for hydrocarbons in increasingly challenging settings, coinciding with many fields reaching “maturity”, there is a greater need to employ “specialist geologists”, such as biostratig...
Article
Geochemical and mineralogical data from a Pliocene to Pleistocene alluvial sequence are integrated to access the factors that control rare earth elements (REE) geochemistry and the evolution and spatial differences in provenance. The studied alluvial system is situated in a tectonic active setting at the contact between the Variscan Massif, with se...
Article
Full-text available
Flore pliocène des dépôts de S. Pedro Da Torre (Minho, NW Portugal). Ce travail concerne la description botanique et systématique d'éléments microfloraux du Pliocène de S. Pedro da Torre (NW Portugal), la caractérisation du paléoenvironnement et du paléoclimat, ainsi qu'une tentative de corrélation avec d'autres dépôts du Pliocène. Cette localité e...
Article
Full-text available
Abstract This paper presents some data concerning marine/lagoon sequences from last interglacial visible at outcrops near Oporto. The best outcrop of Eemien deposits stays at Circunvalação beach and the this Autumn spring tides associated with a stormy weather allowed us to see a better perspective of the sequence and to understand its stratigraph...
Article
Full-text available
The aim of this work is to provide a first approach to the evolution of Iberia's vegetation during the Cenozoic (with the exclusion of the Quaternary). The Palaeogene was floristically defined by Palaeotropical elements forming tropical/subtropical rainforests, mangrove swamps, edaphically-mediated laurophyllous forests and leguminous-sclerophyllou...
Article
Full-text available
RESUMO: Este trabalho apresenta o estudo polínico de sedimentos turfo-lignitosos provenientes dos depósitos sedimentares da sub-bacia da Anadia com vista a caracterizar a flora Pliocénica da região. Descreve-se uma associação polínica diversa, indicando ambiente pantanoso/lagunar com hidroperíodos longos, rodeado por floresta dominada por Pinus e E...
Thesis
The aim of this work is to study the palynology of deposits attributed to the Pliocene in the Portuguese Atlantic Occidental margin; characterize the history of vegetation; obtain information about the evolution of climatic conditions and contribute to the chronostragraphic knowledge of the different units. Ten different geographical localities wer...
Article
Full-text available
A combined Light Microscope and Scanning Electronic Microscope (LM-SEM) technique for observation and study of the samepalynomorph is presented. Usually, the simple observation of the palynomorphs at LM or SEM, currently, is not enough for the positive identification of the different species. The correct identification of the different forms allows...
Article
Full-text available
A combined Light Microscope and Scanning Electronic Microscope (LM-SEM) technique for observation and study of the same palynomorph is presented. Usually, the simple observation of the palynomorphs at LM or SEM, currently, is not enough for the positive identification of the different species. The correct identification of the different forms allow...
Conference Paper
Full-text available
Abstract Book "International Conference on Geological Collections and Museums: Mission and Management"
Conference Paper
Full-text available
The palynological study of the lower levels of Carnide Formation is presented. Till now, nine samples were collected for palynological studies in the lower levels of the Carnide Formation. The palynomorphs are well represented and preserved. Dinoflagellate cysts predominate and are more abundant to the top of the fossiliferous levels. The dinoflage...

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Projects (4)
Archived project
Collecting samples in a Barremian - Hauterivian interval from a drilling core in the North Sea, Stavanger area in an interval called Munk Marl to study Dinoflagellate cysts and Biostratigraphical interpretation.
Project
La finalidad del presente proyecto consiste en generar conocimiento sobre el paleoambiente y la dinámica y adaptación de los bosques de las montañas Centro Occidentales lbéricas (Sistema Central y Gerês) a los cambios climáticos y a la presión antrópica en los últimos 10000 años. En concreto, para responder a las preguntas planteadas sobre la naturalidad y previsible evolución de distintas masas forestales frente al cambio global, se plantea estudiar, desde un punto de vista paleobotánico (estudio de micro y macrorrestos, anillos de crecimiento y carbones del suelo), localizaciones con un alto interés biogeográfico y ambiental.
Project
Goal is to generate high-resolution calibrated stable isotope stratigraphies in expanded rock records using ditch-cuttings from Oil and Gas wells