Papers by Domingos Dos Reis
Mesoproterozoic Siliciclastic Stromatolites of Chapada Diamantina (Brazil): Morphological Types, Genesis and Environmental Context
Supercritical Fluvial Styles and the Shifting Aridity in the Early Triassic: The Example of the Sanga Do Cabral Formation, Paraná Basin, Brazil
Journal of Sedimentary Research, Dec 28, 2023
Spatial and temporal variation in the evolution of ancient aeolian dune-field. The Pennsylvanian Piauí Formation (Parnaíba Basin), Brazil
Sedimentary Geology
Revista Latino-Americana de Estudos Científicos, 2022
As Redes Sociais Digitais e O Ensino De Libras: Demandas Emergentes
INCLUSÃO EM PERSPECTIVA: alfabetização, currículo e acesso à educação
A quantitative depositional model of a large distributive fluvial system (Megafan) with terminal aeolian interaction: The Upper Jurassic Guará DFS in southwestern Gondwana
Journal of Sedimentary Research
Recent studies have shown that distributive fluvial systems are the dominant fluvial forms in mod... more Recent studies have shown that distributive fluvial systems are the dominant fluvial forms in modern continental sedimentary basins, thus composing a large part of the stratigraphic record. This study provides a basin-scale architectural analysis of the Guará Formation, from the Upper Jurassic record of southwestern Gondwana, and attempts to compare the formation's depositional model to those developed for distributive fluvial system (DFS) successions. This time interval is significant because it was a period of intense tectonic activity related to the Paraná–Etendeka plume and the Gondwana breakup. Quantitative analyses were performed on stratigraphic sections at 17 locations (exposing a total of 720 m of stratigraphy) located in southern Brazil and northern Uruguay, from a larger dataset of 64 locations (comprising a total of 1070 m of stratigraphy). Four facies associations were identified: perennial fluvial channel fills, ephemeral fluvial channel fills, floodplain deposits,...
Late Pennsylvanian aridification in Gondwana mid-latitudes contemporaneous to high-latitudes ice cap expansion, upper Piauí Formation, Brazil
Journal of South American Earth Sciences
Contribuições à Geologia do Rio Grande do Sul e de Santa Catarina
Changes in fluvial architecture induced by discharge variability, Jaicós Formation (Silurian-Devonian), Parnaíba Basin, Brazil
Sedimentary Geology, 2021
Abstract Discharge variability-based facies models are key to understanding depositional dynamics... more Abstract Discharge variability-based facies models are key to understanding depositional dynamics and controlling mechanisms of fluvial accumulation. The well-exposed Silurian-Devonian Jaicos Formation, lower Parnaiba Basin, NE Brazil, allows for detailed fluvial architectural analyses in terms of variations in discharge patterns. This field-based study comprises a collection of high-resolution sedimentological, stratigraphic and paleocurrent data from 120 m of integrated logs. Eight architectural elements were recognized and fit into two distinct fluvial styles, termed fluvial units 1 and 2. Fluvial unit 1 is dominated by deposits of straight- and sinuous-crested bedforms, as constituents of downstream accretionary bars and subcritical, aggradational dunes. These elements indicate deposition in a low discharge variability perennial system, where water flow was perennial but bedforms migrated during peak-discharge events, related to a humid climate. Fluvial unit 2 abruptly overlies unit 1 and is dominated by small- to large-scale humpback dunes and antidunes deposited by unstable, transcritical and supercritical flows during non-periodic, peak-flood events. These deposits characterize an ephemeral system, in a high discharge variability regime linked to a semi-arid climate. The Jaicos fluvial system was deposited in a low subsidence basin, in low accommodation settings. Minimally affected by tectonic activity and latitudinal displacements, the Jaicos Formation displays a climate-controlled change in fluvial architecture that reflects shifts in discharge regime. These climate changes were probably triggered by global oscillations in the carbon cycle that were common during the Silurian, but most evidence is from low paleolatitude marine deposits. Thus, the abrupt fluvial architecture change in the Jaicos Formation comprises an example of climate-induced change in a hinterland fluvial system situated at moderate to high paleolatitudes in western Gondwana.
Ciência & Saúde, 2011
Introduction: Several factors affect the quality of modern life. Therefore, due to the concern ab... more Introduction: Several factors affect the quality of modern life. Therefore, due to the concern about nutrition, society is increasingly more acquainted with the importance of foods that enhance good health, considering that good eating habits may minimize the risk of developing many diseases. Probiotics and prebiotics supplementation may guarantee balanced intestinal function, playing a fundamental role in nutrition. Objective: To review the effects of probiotics, prebiotics and synbiotics consumption, types and recommended intake for these substances, as well as the results of their prolonged use. Materials and Methods: Scientific articles, legislation and books, published from 1990 to 2010, were analyzed, using a systematic review. Databases (PubMed, HighWire, EBSCOhost, Scielo, Bireme and Lilacs) were searched for scientific articles, using the following keywords in English, Spanish and Portuguese: prebiotics, functional foods, probiotics and synbiotics. Results: 46 references re...
Revista Brasileira de Nutrição Esportiva, 2019
This study was aimed at analyzing the effect of using products with ergogenic properties on the w... more This study was aimed at analyzing the effect of using products with ergogenic properties on the women’s performance during anaerobic physical tests. Materials and Methods: A double-blind experimental crossover randomized and controlled study with administration of commercial products or placebo substance was performed. Commercial products containing 2.31 mg.kg-1 of caffeine and 1.88 mg.kg-1 of Citrus aurantium, as well placebo products were administered to 8 women aged 18-30 (21.5 ± 2.1), who were performing strength physical training at least for six months. After sample randomization, four trials were made and the groups were reversed (supplement group and placebo group). The static strength including muscle potency and resistance were evaluated by abdominal resistance tests, flexion and extension of the elbow, vertical jump, lumbar traction and handgrip strength, with the latter two variables assessed by mechanical dynamometer. Results: There was no statistical difference in the...
Journal of Analytical Oncology, 2018
Head and neck cancer (HNC) is one of the most common types of the disease, particularly among men... more Head and neck cancer (HNC) is one of the most common types of the disease, particularly among men, and is characterized by a high incidence of death. Among the non-pharmacological factors that help in survival and improving quality of life is physical exercise, especially strength training. The purpose of this short communication was to briefly review the literature and present a training proposal for oncology patients with HNC. Evidence is provided that physical exercise, mainly short-term strength (HIIT [High-Intensity Interval Training]) and aerobic training, contributes to increased expectation and quality of life in cancer survivors. After reviewing the current state of literature, we conclude that strength training, by providing maintenance of muscle mass, improves the autonomy and quality of life of oncology patients with HNC.
Journal of South American Earth Sciences, 2019
Sedimentology of the proximal portion of a large-scale, Upper Jurassic fluvial-aeolian system in ... more Sedimentology of the proximal portion of a large-scale, Upper Jurassic fluvial-aeolian system in Paraná Basin, southwestern Gondwana Adriano Domingos dos Reis a,#
Precambrian Research, 2019
Paleoenvironment and age constraints of Paleoproterozoic alluvial fans in the Sao Francisco Craton, Brazil
Journal of South American Earth Sciences, 2019
Abstract The Ouricuri do Ouro Formation represents sedimentary deposits of the Statherian period ... more Abstract The Ouricuri do Ouro Formation represents sedimentary deposits of the Statherian period in Sao Francisco Craton. Previous works have focused just on the Formation mapping, interpreting the depositional system only in general aspects. However, this study focuses on detailed facies analysis and geochronological investigations of the Ouricuri do Ouro Formation in the central area of Sao Francisco Craton, Brazil. Four facies associations are recognized: i) Proximal deposits dominated by non-cohesive debris flow; ii) Proximal sheetfloods; iii) Intermediate sheetfloods; and iv) Sandy plains of distal floods. Paleocurrent directions derived from cross-bedding indicate a radial pattern to NE-N. The vertical stacking of distal deposits overlying the proximal facies association suggests a retrogradation of the alluvial fan system, indicating a change in the dynamic of the depositional system. Retrogradation might have been caused by a decrease in the regional gradient declining of the tectonic activity or the retreat of the basin's margin faults system. Furthermore, the presence of higher frequency fining-upward cycles also suggests a climatic control in those deposits. These cycles could be results of the progressive decrease in flow capacity and competence, associated with a decrease of superficial runoff over time. Allied with the dominant paleocurrent, the geochronological data of four tuffaceous sandstones reveal the contribution of Rhyacian to Mesoarchean zircons, suggesting that they came with sediments transported from SW and S of the studied area during the Statherian. The transported sediments came from the southern portion of Gaviao Paleoplate. The contribution of volcanic zircons recognized in the tuffaceous sandstones is related to syndepositional magmatism of Statherian Rift of Espinhaco Supergroup. The tuff layer at the base of drill hole (Sample FLV-61 A) contains a zircon age with dominant fraction represented by Statherian zircons defining the syn-sedimentary age of 1722 ± 13 Ma at the basal section of the Ouricuri do Ouro Formation. The present results and available geochronological data constraints the depositional interval of Lower Espinhaco Basin or Megasequence (in sense of Chemale et al., 2012; Guadagnin et al., 2015a, b) between 1.68 Ga in the Chapada Diamantina Region.
Journal of South American Earth Sciences, 2018
The Tacuarembó Formation (Upper Jurassic-Lower Cretaceous), subdivided into Batoví and Rivera mem... more The Tacuarembó Formation (Upper Jurassic-Lower Cretaceous), subdivided into Batoví and Rivera members, crops out in the northern region of Uruguay, as a narrow N-S belt with an average width of 35 km by 115 km in length. The present work has as main objective the sedimentological and stratigraphic analysis of the Tacuarembó Formation, through the facies characterization, reconstruction of the depositional models and definition of contact relationship between the Batoví and Rivera members. Through facies analysis from the survey of columnar profiles in a 1:50 scale of forty-one outcrops, each lithofacies was described and interpreted, then grouped into different facies associations. The Batoví Member consists of sixteen lithofacies composing five facies associations: (1) eolian dunes, (2) eolian sand sheets, (3) ephemeral fluvial channels, (4) perennial braided fluvial channels and (5) sheetflood deposits. On the other hand, the Rivera Member is essentially constituted by one lithofacies and its vertical stacking composes eolian dunes facies associations. The intercalation between fluvial and eolian deposits, with the predominance of fluvial associations, suggests that the Batoví Member represents the depositional model of the distal portion of a distributary fluvial system. Contrastingly, the Rivera Member is characterized by a successive climbing of crescentic eolian dunes, defining a dry eolian system. The abrupt change of depositional systems, marked by a flat surface sometimes with clasts concentration, indicates the existence of a hiatus between the Batoví and Rivera members. Allied to this, the change in the depositional model suggests a climatic change, going from arid to semi-arid climate during the deposition of the Batoví Member, to a hyperarid climate during the deposition of the Rivera Member.
Journal of South American Earth Sciences, 2018
The Lower Cretaceous São Sebastião Formation of Jatobá Basin consists of continental strata accum... more The Lower Cretaceous São Sebastião Formation of Jatobá Basin consists of continental strata accumulated in an arid environment dominated by aeolian deposits. The best outcrops are located in the county of Ibimirim, in the Pernambuco State. Through the description of several stratigraphic sections, three aeolian and two fluvial facies associations characterize this formation. The aeolian facies represent (a) aeolian crescentic dunes, (b) aeolian sand sheets, and (c) blowouts; the fluvial facies record (d) sheet floods and (e) channelized ephemeral rivers. These facies associations are organized into three genetic units that are bounded by supersurfaces. The unit 1 is formed by the intercalation of sheet flood, aeolian dry sand sheets, and aeolian dunes facies associations, often with soft sediment structures. The cross-bedded strata ascribed to aeolian dunes become larger and more frequent towards the top of the unit, as the soft sediment deformation structures become scarcer. The Unit 2 comprises aeolian sand sheets facies scoured by fluvial channels, with erosive concave bases, and by blowouts, which are subsequently filled by aeolian dunes deposits. Unit 3 consists of cross-bedded strata related to medium-to-large, either simple or compound aeolian dunes (draas). Supersurfaces bound the genetic units recording depositional gaps, thus defining different episodes of accumulation.
Precambrian Research, 2017
This is a repository copy of Wind-pattern circulation as a palaeogeographic indicator: case study... more This is a repository copy of Wind-pattern circulation as a palaeogeographic indicator: case study of the 1.5-1.
Sedimentary Geology, 2017
Aeolian systems were abundant and widespread in the early Proterozoic, post-2.2 Ga. However, the ... more Aeolian systems were abundant and widespread in the early Proterozoic, post-2.2 Ga. However, the majority of aeolian successions of such great age are intensely deformed and are preserved only in a fragmentary state meaning that, hitherto, few attempts have been made to apply a sequence stratigraphic approach to determine mechanisms of aeolian construction, accumulation and preservation in such systems. The Mangabeira Formation is a well preserved Mesoproterozoic erg successions covering part of the São Francisco Craton, northeastern Brazil. The lower unit of the Mangabeira Formation (~500 m thick) comprises aeolian deposits of dune, interdune, and sandsheet origin, as well as some of waterlain origin. These deposits are organized into
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Papers by Domingos Dos Reis