Loulé: the anatomy of a squeezed diapir, Algarve Basin, southern Portugal

2016 ◽  
Vol 174 (1) ◽  
pp. 41-55 ◽  
Author(s):  
Ian Davison ◽  
Pedro Barreto ◽  
Alexandre J. M. Andrade
Keyword(s):  
Southern Portugal ◽  
Algarve Basin

Constraining the age of the first pulse of continental rifting associated with the breakup of Pangea in Southwest Iberia

2021 ◽  
Author(s):  
Margarida Vilas-Boas ◽  
Niall W. Paterson ◽  
Zélia Pereira ◽  
Paulo Fernandes ◽  
Simonetta Cirilli
Keyword(s):  
Financial Support ◽  
Depositional Environment ◽  
Late Triassic ◽  
The North ◽  
Low Diversity ◽  
Southern Portugal ◽  
Palynological Study ◽  
Algarve Basin ◽  
Central Atlantic ◽  
Red Bed

<p>The Algarve Basin is a Mesozoic sedimentary basin located in southern Portugal. The basin was initiated by rifting associated with the opening of the North and Central Atlantic Ocean during the initial breakup of Pangea. Sedimentation commenced with continental red beds, which unconformably overlie folded and faulted late Carboniferous strata. The red bed succession (Silves Sandstones) consists mainly of sandstones and conglomerates at the base, overlain by variegated mudstones interbedded with siltstones and dolomites (Silves Mudstones, Siltstones and Dolomites). The sandstones were deposited in alluvial environments, and the mudstones in alluvial to shallow lacustrine environments. Upper Triassic (Carnian to Norian) macrofossils are scarce in the red bed succession, occurring predominantly in the upper beds of the succession above the Silves Sandstones, and do not accurately constrain the age of the beginning of the Algarve Basin.</p><p>A palynological study of a new road cut outcrop of Silves Sandstones, located in central Algarve, was undertaken in order to ascertain its age. A 3 m thick bed of grey siltstones located ca. 2.5 m above the unconformity yielded age-diagnostic palynomorphs, which date the onset of sedimentation in the basin. Samples from the latter bed yielded a moderately well preserved, low diversity palynomorph assemblage, which is dominated by <em>Aulisporites astigmosus, Converrucosisporites</em> sp. and <em>Tulesporites briscoensis</em>. Other taxa present in the assemblage include <em>Alisporites</em> sp., <em>Calamospora</em> sp., <em>Cycadopites</em> sp., <em>Deltoidospora</em> sp., <em>Ovalipollis</em> cf. <em>ovalis</em>, <em>Triadispora</em> sp., and <em>Vallasporites ignacii</em>.</p><p>The dominance of <em>A. astigmosus</em> together with <em>V. ignacii</em> is indicative of an early Carnian age based on comparison with independently dated sections described elsewhere in Europe. This new dating evidence thus constrains the beginning of sedimentation in the Algarve Basin to the earliest Late Triassic. The co-occurrence of <em>T. briscoensis</em> and <em>A. astigmosus</em> suggests a mixing of palynofloral elements typical of North American and central European Carnian assemblages respectively, which is consistent with the intermediate position of Portugal between those regions. The dominance of phytoclasts and the absence of marine palynomorphs confirms a continental depositional environment as also suggested by sedimentary lithofacies.</p><p><strong>Acknowledgements</strong></p><p>The authors would like to acknowledge the financial support of the Portuguese Foundation of Science and Technology (FCT) with the scholarship with the reference SFRH/BD/144125/2019 and would also like to acknowledge the financial support of the FCT to CIMA through UIDP/00350/2020.</p>

Organic maturation of the Algarve Basin (southern Portugal) and its bearing on thermal history and hydrocarbon exploration

2013 ◽  
Vol 46 ◽  
pp. 210-233 ◽  
Author(s):  
Paulo Fernandes ◽  
Bruno Rodrigues ◽  
Marisa Borges ◽  
Vasco Matos ◽  
Geoff Clayton
Keyword(s):  
Thermal History ◽  
Hydrocarbon Exploration ◽  
Southern Portugal ◽  
Algarve Basin

scholarly journals The Jurassic (Pliensbachian to Kimmeridgian) palynology of the Algarve Basin and the Carrapateira outlier, southern Portugal

2011 ◽  
Vol 163 (3-4) ◽  
pp. 190-204 ◽  
Author(s):  
Marisa E.N. Borges ◽  
James B. Riding ◽  
Paulo Fernandes ◽  
Zélia Pereira
Keyword(s):  
Southern Portugal ◽  
Algarve Basin

scholarly journals Callovian (Middle Jurassic) dinoflagellate cysts from the Algarve Basin, southern Portugal

2012 ◽  
Vol 170 ◽  
pp. 40-56 ◽  
Author(s):  
Marisa E.N. Borges ◽  
James B. Riding ◽  
Paulo Fernandes ◽  
Vasco Matos ◽  
Zélia Pereira
Keyword(s):  
Middle Jurassic ◽  
Dinoflagellate Cysts ◽  
Southern Portugal ◽  
Algarve Basin

Firing Tests on Clay-Rich Raw Materials from the Algarve Basin (Southern Portugal): Study of Mineral Transformations with Temperature

2010 ◽  
Vol 58 (2) ◽  
pp. 188-204 ◽  
Author(s):  
Maria José Trindade ◽  
Maria Isabel Dias ◽  
João Coroado ◽  
Fernando Rocha
Keyword(s):  
Raw Materials ◽  
Southern Portugal ◽  
Algarve Basin ◽  
Mineral Transformations ◽  
Firing Tests

Bioactivity of Mentha cervina (Hortelã da Ribeira) from Southern Portugal

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
SC Gouveia ◽  
PC Castilho ◽  
O Póvoa ◽  
TS Weinhold
Keyword(s):  
Southern Portugal

scholarly journals Molecular survey of vector-borne diseases in two groups of domestic dogs from Lisbon, Portugal

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Ana Mafalda Dordio ◽  
Relja Beck ◽  
Telmo Nunes ◽  
Isabel Pereira da Fonseca ◽  
Jacinto Gomes
Keyword(s):  
Clinical Status ◽  
Molecular Methods ◽  
Hepatozoon Canis ◽  
Clinical Approach ◽  
Limited Information ◽  
Vector Borne Diseases ◽  
Wide Range ◽  
Other Information ◽  
Southern Portugal ◽  
Vector Borne

Abstract Background Canine vector-borne diseases (CVBDs) are caused by a wide range of pathogens transmitted by arthropods. They have been an issue of growing importance in recent years; however, there is limited information about the vector-borne pathogens circulating in Portugal. The aim of the present study was to detect canine vector-borne bacteria and protozoa of veterinary and zoonotic importance using molecular methods. Methods One hundred and forty-two dogs from Lisbon, southern Portugal, were tested: 48 dogs from a veterinary hospital clinically suspected of vector-borne diseases and 94 apparently healthy dogs from shelters. Anaplasma spp./Ehrlichia spp., Babesia/Theileria spp., Hepatozoon spp., and Mycoplasma spp. infections were detected by PCR from blood samples and examined under light microscopy. Other information including clinical status and diagnostic test results were collected for each animal. Results Infections were detected by PCR in 48 (33.80%) dogs. Single infections were found in 35 dogs (24.64%), and co-infections were found in 13 (9.15%) dogs. Twenty-nine (20.42%) dogs were positive for Hepatozoon spp., 15 (10.56%) for Mycoplasma spp., 11 (7.75%) for Anaplasma spp./Ehrlichia spp., and six (4.21%) for Babesia spp. DNA sequencing was used to identify Babesia vogeli (2.81%), Babesia canis (1.40%), Hepatozoon canis (20.42%), Mycoplasma haematoparvum (2.11%), Mycoplasma haemocanis (8.45%), Anaplasma platys (7.04%), and Ehrlichia canis (0.70%). Conclusions This is the first molecular identification of B. canis and M. haematoparvum in dogs from southern Portugal. This study highlights the importance of molecular methods to identify CVBD pathogens in endemic areas and helps to guide the clinical approach of veterinarians in practice.

scholarly journals Modeling Energy Communities with Collective Photovoltaic Self-Consumption: Synergies between a Small City and a Winery in Portugal

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 323
Author(s):  
Guilherme Pontes Luz ◽  
Rodrigo Amaro e Silva
Keyword(s):  
Economic Feasibility ◽  
Small City ◽  
Total System ◽  
Trade Offs ◽  
Southern Portugal ◽  
Energy Community ◽  
Individual Self ◽  
The Impact ◽  
The City ◽  
Modest Reduction

The recently approved regulation on Energy Communities in Europe is paving the way for new collective forms of energy consumption and production, mainly based on photovoltaics. However, energy modeling approaches that can adequately evaluate the impact of these new regulations on energy community configurations are still lacking, particularly with regards to the grid tariffs imposed on collective systems. Thus, the present work models three different energy community configurations sustained on collective photovoltaics self-consumption for a small city in southern Portugal. This energy community, which integrates the city consumers and a local winery, was modeled using the Python-based Calliope framework. Using real electricity demand data from power transformers and an actual winery, the techno-economic feasibility of each configuration was assessed. Results show that all collective arrangements can promote a higher penetration of photovoltaic capacity (up to 23%) and a modest reduction in the overall cost of electricity (up to 8%). However, there are clear trade-offs between the different pathways: more centralized configurations have 53% lower installation costs but are more sensitive to grid use costs (which can represent up to 74% of the total system costs). Moreover, key actor’s individual self-consumption rate may decrease by 10% in order to benefit the energy community as a whole.

Waynea giraltiae, a new lichen species from the Iberian Peninsula

2009 ◽  
Vol 42 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Pieter P.G. van den BOOM
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
Lichen Species ◽  
Southern Portugal

AbstractA new lichen species, Waynea giraltiae van den Boom, is described from southern Portugal and Spain. It is characterized by a very fine tomentum on the squamulose thallus, fusiform, 3-septate ascospores, and strongly curved filiform conidia. It is the first species of the genus containing argopsin. The new species is compared with related Waynea species. Waynea cretica is recorded as new to the Iberian Peninsula.

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