Boletim do Museu de Geociências da Amazônia最新文献

{"title":"CARACTERIZAÇÃO MINERALÓGICA DOS SEDIMENTOS DO IGARAPÉ DIABINHO (FORMAÇÃO SOLIMÕES) NO ESTADO DO ACRE – PROVENIÊNICA E IMPLICAÇÕS AMBIENTAIS","authors":"M. Castilho, M.L. Costa, Henrique Almeida","doi":"10.31419/issn.2594-942x.v112024i3a6mpc","DOIUrl":"https://doi.org/10.31419/issn.2594-942x.v112024i3a6mpc","url":null,"abstract":"Igarapé Diabinho, situated in the central region of the state of Acre, is a tributary on the right bank of the Envira river, belonging to the Juruá river basin. Its U-shaped grooved channel is carved in sediments known as the Solimões Formation, of Late Miocene–Pleistocene age. The rocky exposures along Diabinho stream demonstrate a succession of massive silt-clay sediments, covered by other compact sandy silts cemented by carbonates. These sediments are partly overlain by alluvial (fluvial-lacustrine) sediments from the Quaternary, in the region where this stream dominates. For the study, samples collected in three profiles along a ravine on the right bank of Igarapé Diabinho were investigated, in an area used for picnics during the dry season, that is, with slight human disturbance. To assist in identifying the probable source areas of these sediments, and determine their weathering and transport conditions, granulometric analyzes were carried out, investigating the mineralogical composition of the sediments, their heavy minerals, and the mineralogy of the sediments’ clay fraction. The sediments are predominantly silts with little clay, being composed of quartz, feldspars (albite and microcline), clay minerals (smectite, illite, and kaolinite), muscovite, and chlorite. As a result, the sediments were deposited in mild paleoclimatic conditions under weak chemical weathering, indicated by the predominance of unstable minerals, such as amphiboles, feldspars, biotite, epidote, garnet, apatite, and titanite. The dominant presence of aluminosilicates (kyanite, andalusite, sillimanite, garnet, and micas) and epidote indicates that these sediments had as their primary source metamorphosed pelitic rocks. A second assemblage composed of tourmaline, zircon, apatite, titanite, and even ilmenite points to possible contributions from basic and intermediate igneous rocks that are currently observed in Serra do Divisor on the borders of Brazil and Peru. In conclusion, these findings contribute to implications in the paleoenvironmental context by providing insights into the probable source areas of the sediments, determining the weathering and transport conditions, and identifying the mineralogy of the sediments.","PeriodicalId":505201,"journal":{"name":"Boletim do Museu de Geociências da Amazônia","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141838487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"O OURO E OS TOLOS","authors":"Maria Ecilene Silva","doi":"10.31419/issn.2594-942x.v112024i2a4mens","DOIUrl":"https://doi.org/10.31419/issn.2594-942x.v112024i2a4mens","url":null,"abstract":"Among the several roles played by gold since the most ancient civilizations until today, the most incoherent is for sealing the matrimony. Whoever had this shiny idea certainly considered only the beauty and value of this mineral. If they had measured the other gold properties, would have chosen another mineral to symbolize the instability, complexity and deepness of marriage. If the objective was to elevate marriage to gold standard, it would be necessary to reproduce other gold properties such as high resistance, chemical inertness and durability and, in addition, the malleability and ductility of gold, which are so necessary for the relationship to be lasting. The marriage is a kind of alchemy becoming increasingly rare nowadays and the relationships are in a general way only lead and other common metals.","PeriodicalId":505201,"journal":{"name":"Boletim do Museu de Geociências da Amazônia","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141098377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"METODOLOGIAS ATIVAS PARA O ENSINO DE PALEONTOLOGIA NA EDUCAÇÃO BÁSICA","authors":"Laeny Santo, José Pina Assis, Sandra L Bastos","doi":"10.31419/issn.2594-942x.v112024i2a1lres","DOIUrl":"https://doi.org/10.31419/issn.2594-942x.v112024i2a1lres","url":null,"abstract":"The teaching of Paleontology is of great importance in the training of students, supporting the understanding of various science contents. For this reason, its implementation from Elementary School is essential as it provokes curiosity in students. Despite this, themes in this field of knowledge are treated in a fragmented manner in school spaces, so many difficulties are encountered, whether in the structure, the lack of teaching resources, the limitations of support instruments, such as textbooks, or even due to negligence of the official documents that guide fundamental education in Brazil, which often do not deal with the subject with due importance. Given this context, we set out as a general objective to present methodological proposals for the teaching of Paleontology based on the elaboration of a catalogue that brings together scripts of practical activities, which require little infrastructure, and uses simple, low-cost materials that can contribute to the teaching-learning process of Paleontology in Elementary School. The preparation of the catalogue followed three stages: 1) Collection of reference data (bibliographic and teaching materials); 2) Selection and ordering of the thematic activities found, always focusing on the low cost of the materials used and the ease of carrying them out in the school environment); 3) Structural reorganization of the selected activities, considering our pedagogical understanding, to compose the catalogue. Thus, and in line with the National Common Curricular Base (BNCC), the activities were organized into three groups: a) research/production of materials; b) didactic game; c) information and communication technologies. The Practical Activities Guide Catalog aims to bring students and teachers at Elementary School Science and Paleontology together, serving as an instrument to assist in the teaching-learning process.","PeriodicalId":505201,"journal":{"name":"Boletim do Museu de Geociências da Amazônia","volume":"32 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141098063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A BACIA POTIGUAR NA HISTÓRIA DA EXPLORAÇÃO DE PETRÓLEO BRASILEIRO E A VENDA, PELA PETROBRÁS, DO POLO FAZENDA BELÉM, ARACATI-CE, PARA A EMPRESA 3R PETROLEUM","authors":"Milson Xavier","doi":"10.31419/issn.2594-942x.v112024i2a2mesx","DOIUrl":"https://doi.org/10.31419/issn.2594-942x.v112024i2a2mesx","url":null,"abstract":"There were years of interruption of oil extraction activity by the state-owned Petrobrás in the Fazenda Belém onshore oil field. After the purchase by the company 3R Petroleum, the equipment started moving again and aroused euphoria among passers-by on the BR-304. In this work, some setbacks will be presented throughout the history of oil activity in Brazil and what led to the sale of Polo Fazenda Belém to the private sector.","PeriodicalId":505201,"journal":{"name":"Boletim do Museu de Geociências da Amazônia","volume":"45 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141098361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"UMA DAS FRUTAS DE CEMITÉRIOS, A MANGA","authors":"Maria Ecilene Silva","doi":"10.31419/issn.2594-942x.v112024i2a6mens","DOIUrl":"https://doi.org/10.31419/issn.2594-942x.v112024i2a6mens","url":null,"abstract":"No caminho entre a nossa casa e o riacho por onde precisávamos passar diariamente em busca de água para as necessidades domésticas, havia um pequeno cemitério. Eu me escondia lá às vezes quando os meninos da vizinhança corriam atrás de mim para me bater ou coisa pior. Enquanto esperava meus algozes se cansarem e desistirem da caça, aproveitava para comer os frutos das mangueiras que sombreavam os túmulos. As árvores frondosas ostentavam galhos tão carregados que pendiam ao chão com o peso das mangas graúdas. Eram de fato muito maiores que aquelas geralmente encontradas pelas redondezas. O cheiro denso e pretensioso, um convite irrecusável ao desfrute e a doçura e suculência, uma afronta aos residentes do local.","PeriodicalId":505201,"journal":{"name":"Boletim do Museu de Geociências da Amazônia","volume":"51 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141098236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"BACIA HIDROGRÁFICA DO RIO ITACAIUNAS-PA: UMA AVALIAÇÃO ATRAVÉS DA GEOQUÍMICA DE ÁGUAS E SEDIMENTOS","authors":"Helmut Höhn","doi":"10.31419/issn.2594-942x.v112024i2a3hh","DOIUrl":"https://doi.org/10.31419/issn.2594-942x.v112024i2a3hh","url":null,"abstract":"Em abril de 2024 ao dar continuidade a organização de minha papelada e documentação física colecionada ao longo de minha vivência como aprendiz da vida, estudante de geologia e das geociências e como professor da Universidade Federal do Pará, me deparei com o documento intitulado BACIA HIDROGRÁFICA DO RIO ITACAIUNAS-PA: UMA AVALIAÇÃO ATRAVÉS DA GEOQUÍMICA DE ÁGUAS E SEDIMENTOS elaborado pelo geólogo Helmut Höhn, com 22 páginas, ilustrado, datado de outubro de 2007. Foi então que me lembrei que ele, meu ex-mestrando e amante da vida, e dos minerais, em especial do diamante, viera a minha pessoa, e o apresentara como um projeto sonhado por ele, e que queria torná-lo realidade. Ao lê-lo, concluí ser da maior importância, mas muito grandioso, cuja execução dependeria de uma grande equipe multidisciplinar e a envolver várias instituições e empresas, além, é claro, dos altos custos.","PeriodicalId":505201,"journal":{"name":"Boletim do Museu de Geociências da Amazônia","volume":"50 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141098105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"O PODER DA CALCITA, UM MINERAL DE CHACRAS E TINTAS","authors":"Maria Ecilene Silva","doi":"10.31419/issn.2594-942x.v112024i2a5mens","DOIUrl":"https://doi.org/10.31419/issn.2594-942x.v112024i2a5mens","url":null,"abstract":"Visitei na semana passada uma pequena exposição no hall principal do shopping center da minha cidade. Entre estandes de roupas da chamada moda indiana, laticínios, doces, tapetes e de outras quinquilharias, um deles me atraiu feito o imã da magnetita, não obstante, as minhas baixas reservas de ferritina. Havia amostras de quartzo rosa, verde e hialino, ametistas, piritas, turmalinas negras, entre outros. Um espetáculo de cores e brilhos diversos.","PeriodicalId":505201,"journal":{"name":"Boletim do Museu de Geociências da Amazônia","volume":"45 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141098359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}