Elizete Celestino Holanda

In 2020, a group of Brazilian female paleontologists from various universities and public institutions conducted the study “Brazilian Paleontology Gender Profile,” whose main objective was to assess the current demographic diversity of Brazilian paleontologists and how the role of women has evolved throughout the history of the Brazilian Society of Paleontology. Initially, the project aimed to determine the number of professionals working in Paleontology and their demographic distribution in the country. However, our research expanded, encompassing race, Indigenous representation, LGBTQIAP+ data, parenthood, harassment, and gender violence. The present work presents the first installment of three sets of unpublished data, shedding light on gender issues and how to combat gender discrimination through the proposal of affirmative action policies that could be taken within the Brazilian Society of Paleontology and other scientific associations in South America. Keywords: gender profile, women in science, gender biases.

Os temas geológicos são abordados no ensino fundamental dentro do conteúdo programático das disciplinas de Ciências e Ge-ografia e, portanto, podem ocupar muitas vezes um papel secundário. A proposta deste trabalho foi aproximar a universidade do ensino básico, popularizando determinados conceitos e conteúdos por meio de ações com estudantes da graduação e do ensino fundamental. A iniciativa buscou tratar do tema “O Interior da Terra” com base em experimentos que permitissem enten-der os fenômenos geológicos e os processos que ocorrem nas subdivisões internas conhecidas. Estes experimentos buscaram reproduzir, de maneira simples, e com uso de materiais alternativos e de baixo custo, os padrões observados da micro à ma-croescala nos fenômenos naturais. Os experimentos foram elaborados por um grupo de discentes do componente curricular Geologia Histórica, do curso de bacharelado em Geologia na Universidade Federal de Roraima, sob orientação dos professores desta disciplina, e apresentados a um grupo de 51 alunos do 6º ano do ensino fundamental. A experiência realizada mostrou que os alunos da educação básica têm melhor entendimento sobre os fenômenos quando expostos a experimentos.

The coastal plain of the state of Rio Grande do Sul, in southern Brazil, includes four barrier-lagoon depositional systems formed by successive Quaternary sea-level highstands that were correlated to marine isotope stages (MIS) 11, 9, 5 and 1, despite the scarcity of absolute ages. This study describes a sea-level highstand older than MIS 5, based on the stratigraphy, ages and fossils of the shallow marine facies found in coastal barrier (Barrier II). This facies outcrops along the banks of Chuí Creek, it is composed of fine, well-sorted quartz sand and contains ichnofossils Ophiomorpha nodosa and Rosselia sp., and molluscan shells. The sedimentary record indicates coastal aggradation followed by sea-level fall and progradation of the coastline. Thermoluminescence (TL) and electron spin resonance (ESR) ages from sediments and fossil shells point to an age of ∼220 ka for the end of this marine transgression, thus correlating it to MIS 7 (substage 7e). Altimetric data point to a maximum amplitude of about 10 meters above present-day mean sea-level, but tectonic processes may be involved. Paleoceanographic conditions at the time of the highstand and correlations with other deposits in the Brazilian coasts are also discussed.