Geostatistical simulation techniques have an important role in petroleum reservoir characterization. With this tool it is possible to reproduce observed heterogeneities and to characterize better the reservoir geology. However, as there are many variables to be analyzed and interpreted by geologists, it is necessary an uncertainty study of parameters used in the project. Thus, the main aim of this paper is to a...
Annelids of the genus Phragmatopoma are marine animals with benthic sessile habit found in nearly all Brazilian coast, where they build reefs via aggregating coastal sands. Their habitat and preservation of reefs aid Holocene studies on relative sea-level variation, besides other biological, oceanographic and even economic aspects, arousing great interest in their biosedimentary buildings. This work analysed se...
The Ipubi Formation in the Araripe Basin (Northeast Brazil) has evaporite-lutite successions rich in gypsum, a mineral of great regional economic relevance, a highlighted stratigraphic mark, and also a natural boundary for underlying successions potentially analogous to “Pre-Salt” hydrocarbon reservoirs of the Brazilian coastal basins. In this study, syngenetic and diagenetic aspects of the Ipubi Formation at S...
The diverse Holocene morphological features along the south coast of the state of Santa Catarina include lagoons and residual lakes, a barrier, a delta (constructed by the Tubarão River), and pre-existing incised valleys that have flooded and filled. This scenario contains the sedimentary record of the transition from a bay to a lagoon system, which occurred during the rise and subsequent semi-stabilisation of ...
Since the beginning of the human occupation in the south-central coast of Santa Catarina State, in Brazil, the articulation between natural and anthropic processes modeled a strongly domesticated landscape, shaped by the massive construction of shell mounds of monumental dimensions and millenarian permanence. In the coastal plain between Passagem da Barra (Laguna District) and Figueirinha Lake (Jaguaruna Distri...
The channel of the Valo Grande (VG) in the Ribeira de Iguape River (São Paulo State, Brazil), inaugurated in 1852, is one of the largest environmental disasters in the Brazilian coast. This article presents a synthesis of the historical, ecological, geographic and sociopolitical dimensions involving the VG. The VG has promoted the ecosystem disrupting and the landscape reconfiguration of Cananéia-Iguape estuary...
The northern equatorial margin basins are research targets involving hydrocarbons and their production. We highlight studies carried out in the Potiguar Basin and most recently in the Mundaú Sub-Basin. This last, focus of this research could be sampled for the first time in the onshore part, where limestones were discovered due to the Metrofor and water well drilling. There are two drill holes SR-103+020 and SM...
The Pimenteiras Formation records the marine ingression in the Meso/Neo-Devonian of the Parnaíba Basin, and it shales are the main source rock interval for its conventional petroleum system. The aim of this paper is to integrate geological and geochemical data in order to provide the potential on shale gas production of the Pimenteiras Formation, based on the outcrop sampling. Nine depositional facies were iden...
The Crato Member is one of the most important stratigraphic units of the Araripe Basin due to its fossil content, its context analogous to the Brazilian “Pre-Salt Layers”, and its use as covering stone. Facies and petrographic analyses were combined in our study of a section of the Crato Member in Nova Olinda (State of Ceará, Brazil), aiming to investigate its depositional and diagenetic history. Thus, we analy...
Background: Amber has been reported from the Early Cretaceous Crato Formation, as isolated clasts or within plant tissues. Undescribed cones of uncertain gymnosperm affinity have also been recovered with amber preserved in situ. Here, we provide multiple lines of evidence to determine the botanical affinity of this enigmatic, conspicuous cone type, and to better understand the diversity of amber-source plants p...