Popovia johnrolandi n.sp., a new smaller agglutinated foraminifera from northern Venezuela: a biostratigraphic example of the second law of thermodynamics

We describe a previously unrecognised species of Popovia, here named Popovia johnrolandi n.sp. from the Miocene of Eastern Falcon state in Venezuela. The internal complexity of this new species increased through the Serravalian from Zone N10 to N14. This apparent trend towards increasing internal complexity reflects increasing entropy through time, and is here interpreted as an evolutionary adaptation to life within an oxygen minimum zone

Report of the "Comissão Geológica do Reino" on the scientific voyage to several European countries by its Member Carlos Ribeiro in 1858

Relatório original, datado de 31 de Janeiro de 1859, do espólio do "Arquivo Histórico do LNEG"Apresentação do Relatório da viagem de Carlos Ribeiro, da Comissão Geológica do Reino, a diversos países da Europa (França, Áustria, Hungria, Itália e Espanha) de 4 de julho a 14 de dezembro de 1858. A viagem teve por objetivos adquirir coleções e livros científicos, classificar os fósseis das bacias terciárias marinhas do Tejo e do Guadiana e estabelecer contactos com os cientistas das instituições europeias congéneres

Prospect Analysis and Hydrocarbon Reservoir Volume Estimation in an Exploration Field, Shallow Offshore Depobelt, Western Niger Delta, Nigeria

The daunting challenge in the exploration and production of oil and gas in the face of continual rise in the world’s energy consumption has long been how to economically recover bypassed reserves within existing assets. This research is focused on the analysis of prospects and volumetric estimation of the hydrocarbon reservoirs delineated within an exploratory field using 3D seismic data and suites of wireline logs. The prospectivity of the delineated reservoir was carried out using seismo-structural interpretation and formation evaluation towards the assessment of the prolific hydrocarbon occurrence within the field. The reservoirs have porosity (0.29–0.32) for H1, (0.20–0.31) for H2 and (0.30–0.40) for H3 and the average computed hydrocarbon saturation of (0.31–0.62) for H1, (0.16–0.52) for H2 and (0.64–0.73) for H3, hydrocarbon pore volume (HCPV) of 28,706.95, 33,081.2 and 45,731.49 barrels for H1, H2 and H3, respectively, while the estimated stock tank oil initially-in-place (STOIIP) range (136.8–140.73) MMSTB for H1, (36.77–489.64) MMSTB for H2 and (166.62–308.14) MMSTB for H3. The observed porosity and hydrocarbon saturation for the delineated reservoirs as well as the estimated hydrocarbon pore volume and storage total oil in place indicate that the reservoirs are highly prolific. The study has therefore contributed to the understanding of hydrocarbon resource potential within the study area

Commented correspondence of Carlos Ribeiro and Nery Delgado : a contribution to the history of archaeology in Portugal

Apresenta-se a correspondência actualmente conservada no Arquivo Histórico do Instituto Geológico e Mineiro (IGM), com interesse para a história da Arqueologia em Portugal, a qual ainda não tinha sido objecto de estudo arquivístico e documental, de que se encarregou um dos autores (A. A. M.). O outro dos autores (J. L. C.) encarregou-se, sobretudo, da análise de cada documento, procurando-se através de breves comentários integrar as questões referidas, bem como os seus intervenientes, na respectiva época, e, dentro do possível, no âmbito das grandes questões científicas que então se discutiam. Em tal discussão, tanto Carlos Ribeiro como Nery Delgado tiveram papel dominante, correspondendo-se com os vultos, mais destacados da época: Barão de Baye; de Marsy; Barboza du Bocage; H. Howorth; H. Schliemann; Boucher de Perthes; E. Dupont; Casalis de Fondouce e Estácio da Veiga, entre outros. Avultam os documentos relativos à IX Sessão do Congresso Internacional de Antropologia e Arqueologia Pré-Históricas de 1880, realizado em Lisboa. O conjunto é valorizado pela existência de minutas de resposta a alguma da correspondência recebida pelos dois eminentes pré-historiadores portugueses. Transcrevem-se, ainda, na íntegra, dois documentos autobiográficos, redigidos por Nery Delgado e por Carlos Ribeiro, também inéditos. Com a publicação destes documentos, salienta-se o papel desempenhado na investigação arqueológica pelos membros da Segunda Comissão Geológica de Portugal (1857-1868), bem como pelos organismos que, com outros nomes, lhe sucederam, a Secção dos Trabalhos Geológicos de Portugal (1869-1886) e a Comissão dos Trabalhos Geológicos de Portugal (1886-1892), corporizando a chamada "Idade de Ouro" da Arqueologia Portuguesa.The correspondence belonging to the IGM's hi storical files and relevant to the History of Portuguese Archaeology, was studied. This correspondence was gathered for the first time as documental files by A. A. M. The other author, J. L. C., has made the analysis of each document and, using brief comments, integrated the quoted issues and their intervenients on the main scientific subjects thereonce debated. ln such issues, Carlos Ribeiro anel Nery Delgado held an important role, and kept correspondence with many societally and scientifically known men of that period, such as Baron de Baye, de Marsy, Barboza du Bocage, H. Howorth, H. Schliemann, Boucher de Perthes, E. Dupont, Casal is de Fondouce and Estácio da Veiga, amongst others. There are many documents related to the IX Session of the lnternational Congress of Antropology and Prehistorical Archaeology on 1880, held in Lisbon. Many correspondence from C. Ribeiro and Nery Delgado also presented attached documental pieces of the returned letters. We also integrally transcribe two autobiographic inedit documents from Carlos Ribeiro and Nery Delgado. We further emphasise the important work in archaeological research developed by th Second Porugueses Geological Comission (1869-1886) and by the Comission of Portuguese Geological Works (1886- 1892), both relevantly contributing to the so-called "Golden Age" of Portuguese Prehistorical Archaeolog

The Société Géologique de France in Catalonia (September - October 1898)

La primera i única reunió extraordinària que la Société Géologique de France ha tingut a Espanya al llarg dels seus 170 anys tingué lloc a Catalunya l'any 1898. A partir d'un suggeriment de M. Gaudry al Dr. Almera en una visita a Barcelona (octubre de 1895), els membres catalans de la Societat elaboraren una proposta d'excursions pels voltants de Barcelona que fou acceptada (gener de 1898) com a marc per a l'assemblea extraordinària de l'any. L'organització de l'esdeveniment fou un èxit personal del Dr. Almera. Des del punt de vista científic, l'obra del Dr. Almera rebé el vist-i-plau de la cúpula de la geologia europea. A més, L.M. Vidal dirigí excursions complementàries a la mina de sal de Cardona, a la zona volcànica d'Olot i a la serralada del Montsec. La trobada fou puntualment divulgada a la premsa a través de les cròniques escrites per Bofill al Diario de Barcelona. Altres resultats de la reunió foren la publicació de les actes (París, 1900; Madrid, 1903), que de fet constituien una primera guia geològica de Catalunya; la consolidació de les relacions internacionals entre els geòlegs catalans i els francesos, i l'obertura de nous camps en la investigació geològica de Catalunya. Paraules clau: Història de la ciència, segle XIX, societats científiques, geologia, Catalunya, Espanya.The only meeting held in Spain by the French Geological Society took place in Catalonia in the year 1898. Following a suggestion made by Dr. Gaudry which was communicated to Dr. Almera, the Catalonian members of the Society proposed an excursions program for the Barcelona area which was accepted by the bureau of the Society. The organisation was a personal success for Dr. Almera. From a scientific point of view, his geological work was shown on various sites, discussed and founded worthy of remark by the highest representatives of the European geology. Moreover, L.M. Vidal led up complementary excursions to Cardona salt mine, Olot volcanics, and Montsec mountains. The catalonian public had the opportunity to keep up to date with events through the writing of Bofill in the Diario de Barcelona. Finally, the first geological guide of Catalonia was issued in Paris (1900) and Madrid (1903). Other results of the meeting were the improvement in relations between Catalonian and French geologists, and the opening of new areas of geological research in Catalonia. Key words: History of science, 19th century, scientific societies, geology, Catalonia, Spain

„Ízesítő” a permi Bodai Agyagkő Formáció őskörnyezeti rekonstrukciójához: kősó utáni pszeudomorfózák a BAT–4 fúrás agyagkőmintáiban

A BAT–4 fúrásban a Bodai Agyagkő Formáció agyagkőmintáinak petrográfiai mikroszkópos vizsgálata során a vörös, agyagos–hematitos alapanyagban négyzet, négyágú csillag, illetve háromszög metszetű, uralkodóan pátos karbonát (kalcit vagy dolomit) egykristályokból álló kitöltéseket figyeltünk meg. Morfológiájuk alapján ezek a pszeudomorfózák korábbi kősó vázkristályok („hopper” halit, „pagoda” halit) utáni helyettesítésként értelmezhetők, amelyek az intenzív bepárlódás és a korai diagenetikus kősókiválás bizonyítékai a laza üledékben a sós iszaplapályon

SIR-A imagery in geologic studies of the Sierra Madre Oriental, northeastern Mexico. Part 1 (Regional stratigraphy): The use of morphostratigraphic units in remote sensing mapping

SIR-A imaging was used in geological studies of sedimentary terrains in the Sierra Madre Oriental, northeastern Mexico. Geological features such as regional strike and dip, bedding, folding and faulting were readily detected on the image. The recognition of morphostructural units in the imagery, coupled with field verification, enabled geological mapping of the region at the scale of 1:250 000. Structural profiling lead to the elaboration of a morphostructural map allowing the recognition of an echelon folds and field trends which were used to postulate the ectonic setting of the region