bluuebunny/crossref_metadata_2025 huggingface dataset:
Health-related quality of life of trans people using a specialized health service in Manaus, Amazonas state, Brazil, 2023: a cross-sectional study
Authors: Gualberto Júnior Erivan Clementino , Dall’Alba Açucena Amâncio , Neves André Luiz Machado das , Amaral David Câmara Gurgel do , Soares Aline Barreto , Herkrath Fernando José , Herkrath Ana Paula Corrêa de Queiroz
Published: January 2025

ABSTRACT Objective To assess health-related quality of life and associated factors among trans people. Methods This was a cross-sectional study conducted in 2023. The 12-Item Short- Form Health Survey was used with trans women, trans men, travestis, and non-binary people who were users of a health service in Manaus, capital city of Amazonas state. Results A total of 71 participants were included: 36 trans women; 29 trans men; 2 travestis; and 4 non-binary people, with a mean age 30.1 years. The physical component scored 44.6±7.8, and the mental component scored 38.4±11.1. The emotional aspect with a score of 16.0±1.1, was the most affected domain. Paid employment was associated with better mental quality of life, while having lived in street situations was associated with worse physical quality of life, with mean differences of 4.4 (95%CI 2.3;6.9) and -3.3 (95%CI -7.7;2.3) respectively. Conclusion Among trans people, the mental component was more affected than the physical, with the greatest impairment observed in the emotional aspect. Socioeconomic characteristics were associated with quality of life.
Distribuição espacial e perfil sociodemográfico de mulheres transexuais e travestis com teste rápido para sífilis e HIV em Manaus, 2020-2021
Authors: Bassichetto Katia Cristina , Fonseca Paula Andrea Morelli , Queiroz Rita Suely Bacuri de , Kon Rubens , Veras Maria Amélia de Sousa Mascena
Published: January 2025

RESUMO Objetivo Analisar a distribuição espacial de mulheres trans e travestis (MTTr), considerando-se indicadores de vulnerabilidade social e resultados de testes rápidos de sífilis e HIV, em Manaus-AM. Métodos Utilizou-se técnica de amostragem para populações de difícil acesso. Os endereços foram categorizados segundo índice de vulnerabilidade social. Foram recrutadas 339 MTTr entre 2020 e 2021, e 309 tiveram seus endereços mapeados. Resultados A maioria (43,4%) morava em áreas periféricas, com maior vulnerabilidade social. A classificação do local de moradia não se mostrou associada às taxas de positividade de sífilis (p-valor = 0,578) e HIV (p-valor = 0,885). As características associadas à maior soropositividade para as infecções sexualmente transmissíveis (IST) foram idade entre 38 e 58 anos, ensino médio completo e histórico de trabalho sexual. Conclusão Observou-se maior concentração espacial de MTTr em áreas de maior vulnerabilidade social, embora o local de moradia não tenha se mostrado associado às taxas de positividade para as IST analisadas.
Responsabilidad patrimonial extracontractual del Estado colombiano
Authors:   Universidad Cooperativa de Colombia, Saavedra Ramírez Laura Cristina
Published: January 2025

Esta nota de clase busca contribuir a la formación académica a través de un material didáctico y de fácil comprensión en cuanto al contenido de la responsabilidad patrimonial del Estado, tema que en los últimos años ha sido trascendental en la formación académica de los estudiantes de las facultades de derecho. La responsabilidad es un principio jurídico del derecho moderno, máxime cuando en Colombia se realzó la calidad constitucional de la responsabilidad del gubernamental, con lo cual surgieron nuevos conceptos que cambiaron la perspectiva del deber patrimonial en nuestro país. En la actualidad, la responsabilidad se entiende como un principio jurídico por la tendencia principialística contemporánea; por lo tanto, es muy importante conocer los aspectos sustanciales que se deben tener en cuenta para buscar que el Estado se declare patrimonialmente responsable.
Hunting Sociolect in Contemporary Polish (with Lexicographical Material)
Authors: Janicka-Szyszko Renata
Published: January 2025

The article analyzes lexemes labeled as “hunting” in the online Great Dictionary of the Polish Language. These terms describe activities, tools, and other realities specific to hunting, primarily used by hunters in their community interactions. The research material comprised 179 lexical units. Using the theory of language fields to present the research material allowed for its comparison with hunting vocabulary gathered in a specialized dictionary and with thesociolect used in a literary work. The examination of the sociolectal vocabulary collected in the WSJP (Great Dictionary of the Polish Language) illustrates, on one hand, the linguistic resources used in hunters’ community communication, and on the other hand, shows the incorporation of elements from specialized language into contemporary colloquial Polish.
Fadiga por compaixão e situações de desastres: uma revisão narrativa
Authors: Vivian Chancarlyne , Schoeninger Maiara Daís , Trindade Letícia de Lima , Borges Elisabete Maria das Neves
Published: January 2025

A Fadiga por Compaixão (FC) envolve mudanças cognitivas e simbólicas decorrentes da exposição à dor e ao sofrimento do outro. Para tanto, o estudo objetivou identificar como a literatura científica apresenta a Fadiga por Compaixão em profissionais que atuam em situações de desastres. Trata-se de uma Revisão Narrativa da Literatura, com busca sistematizada em três bases de dados, a partir dos descritores “Fadiga por Compaixão” AND “Desastres”, nos idiomas Português, Inglês e Espanhol. A investigação ocorreu no período de outubro a dezembro de 2023. 28 artigos integraram esta revisão. Os achados foram reunidos em quatro categoriais: Presença de FC, Síndrome de Burnout e Estresse Traumático Secundário; Causas, efeitos e fatores de risco associados a ocorrência de FC em situações de desastres; Impactos do desastre e profissionais de ajuda e Estratégias de enfrentamento e mitigação do desastre e intervenções em FC. A literatura indicia que os profissionais que atuam em desastres estão expostos à FC, além de implicações na saúde destes trabalhadores o que sugere que estratégias de enfrentamento e cuidado tais como prevenção individual e investimentos em recursos psicológicos. É necessário escuta especializada de forma contínua, que considere as demandas dos profissionais e o cenário onde o desastre acontece.
Resposta da psicologia em desastres socioambientais: uma revisão da literatura
Authors: Andrade Rafaella Espíndola de , Cabral Károl Veiga
Published: January 2025

Frente às mudanças operadas pelos seres humanos no meio ambiente e à intensificação de eventos climáticos extremos, a ocorrência de desastres cada vez mais graves exige uma resposta articulada de profissionais de diversas expertises. No Brasil, um país de dimensões continentais e marcado por profundas desigualdades, desastres de grande magnitude têm ocorrido com frequência. O presente estudo investigou como são estruturadas e implementadas as estratégias de intervenção da psicologia na fase de resposta a emergências e desastres socioambientais no Brasil. Foi feita uma revisão integrativa para mapear o tema na literatura científica brasileira com os descritores de busca "saúde mental" AND "desastres" e "psicologia" AND "desastres". Os critérios de inclusão foram: publicações entre 2013 e 2023; artigos em português; texto completo online; estudos realizados no Brasil; desastres de origem ambiental ou climática. Já os de exclusão: teses, capítulos de livros, anais de congressos ou conferências; artigos sem metodologia descrita; artigos pagos; revisões de literatura; autor principal não ser profissional da psicologia. Seis artigos foram selecionados e os dados foram analisados pelo método de Análise de Conteúdo. Os resultados foram sintetizados em duas categorias: 1) caracterização da atuação: trabalho direto e indireto; 2) gestão de riscos e desastres no SUS. A revisão identificou que a psicologia intervém diretamente no atendimento às vítimas e indiretamente no trabalho com equipes de gestão e capacitação de trabalhadores. Os achados contribuíram para o aprofundamento do campo científico sobre o tema.
Intervenção no parque farroupilha: a psicologia frente aos desastres e situações de crise
Authors: Rutsatz Patrícia , Mazzarotto Rosilene , Rosa Tatiana Gomes , Silveira Régis Rodrigues da
Published: January 2025

Este relato de experiência descreve uma intervenção psicológica realizada no Parque Farroupilha (Parque Redenção), na cidade de Porto Alegre, RS, em resposta às enchentes que assolaram o estado do Rio Grande do Sul em 2024. A ação, conduzida por onze estudantes e professora do curso de Psicologia como parte de um projeto de extensão, teve como foco o acolhimento emocional e psicoeducação das pessoas impactadas pelo desastre. A partir de recursos técnicos como a escuta ativa, suporte psicossocial e a distribuição de uma cartilha informativa sobre saúde mental e locais de apoio psicológico, buscou-se acolher e sensibilizar a população sobre a importância do cuidado com a saúde emocional em situações de crise. Foram distribuídas cem unidades da cartilha informativa, alcançando um número significativo de pessoas diretamente impactadas pela iniciativa. A partir dos feedbacks recebidos in loco, foi possível avaliar que a atividade teve respostas favoráveis e demonstrou a importância deste projeto como rede de apoio para essa comunidade. Este relato também reflete sobre as contribuições dessa experiência para o desenvolvimento acadêmico e profissional dos participantes, destacando a relevância da formação teórica e metodológica em Psicologia na área de desastres.
Apoio psicossocial a povos indígenas em desastres e emergências em saúde pública
Authors: Lacerda Luiz Felipe Barboza , Medeiros Camila Pinheiro , Schmidt Beatriz , Tembé Míriam Dantas de Almeida , Noal Débora da Silva , Tenetehar Kwarahy
Published: January 2025

Com o aumento de eventos extremos desencadeados por mudanças climáticas, mostra-se relevante compreender como as políticas públicas focadas em respostas a desastres e emergências em saúde pública propõem a atuação com populações específicas, dentro dos territórios afetados. O objetivo do presente estudo é apresentar categorias centrais para uma abordagem adequada de apoio psicossocial a povos indígenas em desastres e emergências em saúde pública. Para tanto, realizou-se uma análise crítica da literatura científica, articulando os achados com preconizações de políticas públicas vigentes no Brasil, em diálogo com produções de lideranças indígenas de renome internacional e, também, com vivências práticas dos autores junto a comunidades originárias e povos tradicionais, e/ou no contexto de eventos extremos. Dentre as categorias a serem consideradas na formulação de estratégias de apoio psicossocial a populações indígenas afetadas por desastres e emergências em saúde pública, foram destacadas: Diversidade de compreensões sobre os fenômenos; Comunicação intercultural; Respeito aos mais velhos; Corpo-território; Identidade e elaboração coletiva da situação potencialmente traumática; A cidade como território indígena; Respeito à organização social; Uma ciência e uma medicina própria; O luto e a centralidade da espiritualidade. Adicionalmente, foram sumarizadas recomendações a gestores e profissionais da Rede de Atenção Psicossocial, visando à promoção do Bem-Viver em eventos extremos, com a garantia dos princípios de universalidade, integralidade e equanimidade, preconizados pelo Sistema Único de Saúde.
Grandes projetos, crimes ambientais e produção de “subjetividades atingidas” em Barcarena, Pará
Authors: Rodrigues Robert Damasceno Monteiro , Piani Pedro Paulo Freire , Lemos Flávia Cristina Silveira
Published: January 2025

Com este artigo, apresentamos os resultados de uma pesquisa de mestrado que teve como objetivo analisar os efeitos dos crimes ambientais decorrentes de grandes projetos, como mineradoras e hidrelétricas, na vida dos moradores da região de Barcarena, no estado do Pará. Identificamos estas pessoas como atingidos e, ao longo do estudo, colocamos esta categoria em análise. Partimos, portanto, das transformações ocorridas em seus modos de vida e utilizamos da observação, diário de campo e entrevistas semiestruturadas para a produção dos dados, que foram analisados com base nos pressupostos teórico-metodológico-políticos do materialismo histórico-dialético. Falamos a partir da psicologia social crítica, logo, concebemos a produção do sujeito como unidade na totalidade que compreende as dimensões materiais e ideológicas, individuais e coletivas, objetivas e subjetivas do ser social. Identificamos que os efeitos provocados pelos grandes projetos na vida dos moradores de Barcarena não se dissociam da estratégia implementada pelo capitalismo na Amazônia e que, as suas subjetividades, são produzidas através das transformações nos seus modos de vida em campos como o trabalho, a saúde, as relações culturais, a luta e a resistência. Concluímos propondo a ampliação do conceito de atingidos, para a incorporação das dimensões subjetivas que compreendem os efeitos provocados pelos grandes projetos na vida das pessoas, tendo em vista contribuir com as elaborações teórico-conceitos sobre essa categoria, mas também com as lutas e organizações em defesa dos seus direitos.
EFEITO DO EXERCÍCIO FÍSICO NAS SEQUELAS CARDIOVASCULARES CAUSADA PELO SARS-CoV-2: um relato de caso
Authors: Muniz Rodrigues Felipe , Muller Reis Weber Vinicius , Bessa Dantas Diego , Gustavo Cavazzoto Timothy , Aires Ferreira Sandra , Roberto Queiroga Marcos
Published: January 2025

Introdução: a pandemia da Covid-19 teve um impacto significativo na saúde global, resultando em muitos pacientes apresentando sequelas pós-infecção, como problemas cardiovasculares e alterações hemodinâmicas. Essas condições são comumente relatadas em casos conhecidos como "Covid longa". O uso de exercícios físicos (EF) como parte da reabilitação tem se mostrado uma abordagem promissora para aliviar os sintomas persistentes após a infecção. Objetivo: avaliar o papel terapêutico do exercício sobre a hipertensão e a aptidão fisica como sequela pós infecção por SARS-CoV-2 Método: trata-se de um estudo de caso realizado com um paciente de 52 anos, encaminhado pela Secretaria de Saúde para dar continuidade ao tratamento com EF. O paciente foi submetido a uma anamnese clínica, na qual relatou sequelas pós-SARS-CoV-2, incluindo fadiga crônica e hipertensão arterial, e a uma avaliação física que incluiu medidas antropométricas (massa corporal, estatura, circunferência da cintura-CC), testes motores (abdominais, teste de caminhada de 6 minutos) e capacidade vital (espirometria). Em seguida, o paciente foi acompanhado individualmente por 90 dias em um programa de EF seguindo as evidências cientificas do American College Sports Medicine, realizado duas vezes por semana, com duração de 60 minutos por sessão. O programa incluiu atividades aeróbias e treinamento resistido como parte principal do tratamento. Resultados: após a conclusão do programa, o paciente relatou uma melhora na disposição (maior resistência), e foram observados aumentos na distância percorrida no teste de caminhada de 6 minutos (5%) e na capacidade vital (3%). Além disso, houve uma redução na massa corporal (3%), na CC (3%) e normalização da pressão arterial. Conclusão: esses resultados indicam que o programa de exercícios, realizado duas vezes por semana, durante 90 dias, demonstrou ser efetivo tanto em aspectos qualitativos (percepção do paciente) quanto em aspectos quantitativos (melhora no desempenho e redução de medidas de pressão arterial) em um indivíduo com sequelas cardiovasculares pós-Covid-19.
HPV E A ASSOCIAÇÃO COM CÂNCERES DE COLO DO ÚTERO E CABEÇA E PESCOÇO
Authors: Beranger Kethllen Stephanie , Sott Bender Mariluza , Pollo Renner Jane Dagmar
Published: January 2025

Introdução: a palavra câncer apresenta uma magnitude global, representando um desafio de saúde pública. Prevê-se que até 2030, milhões de novos casos sejam diagnosticados e milhões de óbitos ocorram em nível global. A identificação precoce é crucial, visto que o câncer abrange mais de 200 doenças decorrentes do crescimento anormal de células. Essas diversas categorias de câncer, com alto potencial de proliferação celular e metástase, resultam de mutações genéticas celulares. Objetivos: realizar uma análise abrangente e crítica das principais fontes acadêmicas e científicas disponíveis sobre a relação entre o Papilomavírus Humano (HPV) e os cânceres de útero e de cabeça e pescoço. Material e Métodos: Realizou-se uma pesquisa bibliográfica descritiva e qualitativa, seguida de uma revisão narrativa da literatura. Resultados: O HPV, com mais de 200 subtipos identificados, é uma infecção sexualmente transmissível de alto impacto. Ele está relacionado tanto ao câncer de colo do útero quanto ao câncer de cabeça e pescoço. A detecção precoce e o tratamento de lesões precursoras desempenham um papel crucial na redução da incidência e mortalidade por estes cânceres. A infecção por HPV na adolescência é uma preocupação, principalmente devido à transmissão por práticas sexuais desprotegidas. Portanto, é fundamental conscientizar e prevenir durante a adolescência. Considerações finais: Detectar o câncer precocemente e adotar medidas preventivas é fundamental, especialmente quando se trata de cânceres relacionados ao HPV. Isso sublinha a necessidade de entender e abordar a relação entre o HPV e esses tipos de câncer. A conscientização na adolescência desempenha um papel crucial na prevenção dessas doenças.
Investigations of the impact of considering different numerical modelling techniques for determining seismic damage at the dam-foundation interface of the stepped abutment of a concrete gravity dam: A case study on the Beni-Haroun Dam
Authors: Abdelli Z , Becheur A
Published: January 2025

This paper investigates how accounting for contact conditions and a step abutment in the foundation affects the seismic damage behaviour of concrete gravity dams. For this purpose, a pushover analysis was conducted utilising two distinct calculation models based on continuum damage mechanics. The first model uses a continuous mesh between the dam and the soil foundation without modelling any discrete interfaces, while the second considers the dam and soil meshes separately with contact relations. To improve accuracy, the numerical simulations were conducted for each case with three different damage models. The results indicate how considering contact conditions has a significant impact not only on the overall seismic response but also on the distribution and progression of the damage field in the dam. More precisely, the areas where damage occurs in the vicinity of the foundation zones differ between these two models. The first model results indicate damage first appearing near the heel, while with the second model the damage begins near the abutment. This is demonstrated using the Beni-Haroun gravity dam as a structural case study.
Estimation of Areal Reduction Factors in South Africa, Part 1: Development and evaluation of a software interface
Authors: Pietersen J P J , Gericke O J , Smithers J C
Published: January 2025

Areal Reduction Factors (ARFs) are used to convert average design point rainfall depths to an areal (catchment) design rainfall depth to serve as primary input to estimate the design flood associated with a specific storm duration and return period. This paper presents the development and critical evaluation of a stand-alone software interface to estimate regional, geographically-centred ARFs using the methodology developed by Pietersen (2023). By considering standard input variables in a range of catchment areas, the application of the ARF software demonstrated that it is an easy-to-use software tool for the rapid estimation of ARFs in both gauged and ungauged catchments, and with the aid of the default and combined algorithm, geographically-centred ARFs which vary with return period can be estimated. Given that the other geographically-centred ARF methods reviewed in this paper do not take return periods into account and have not been validated using local and up-to-date rainfall data applicable throughout South Africa (SA), it is recommended that the ARF software be incorporated as the standard estimation procedure for long duration (> 24-hour), geographically-centred ARFs in SA. In addition, the proposed methodology and ARF software should also be further validated for short (< 24-hour) and long (> 24-hour) durations by applying it to actual catchments distributed throughout SA and subjected to different rainfall-producing mechanisms.
A Spiny Aptychus from the Cretaceous of Kansas
Authors: Fischer Alfred , Fay Robert O.
Published: January 2025

Surficial characters and internal structures of a new species of ammonoid opercula, Spinaptychus sternbergi, discovered in the Cretaceous Niobrara formation of western Kansas, are described and illustrated. The Kansas specimens are better preserved and larger than any previously described species of the genus and represent the first record of the genus from North America. Orientation of growth lamellae leads to the conclusion that Spinaptychus was not a strictly external structure, because the outer margins of its exterior surface at least evidently were covered by mantle tissues.
The Geology of the Norton Oil Field, Norton County, Kansas
Authors: Merriam Daniel F. , Goebel Edwin D.
Published: January 2025

The Norton oil field, in Norton County, Kansas, about 6 miles southwest of the town of Norton, was discovered in May 1953. Late in August 1954, there were 97 producing wells, and the field included about 1,700 acres. Production is from the Arbuckle dolomite, Cambro-Ordovician in age, and from the Reagan sandstone, Cambrian in age.
The report contains four structure maps of the field: (1) top of the Stone Corral formation, (2) top of the Lansing group, (3) base of the Kansas City group, and (4) top of the Arbuckle group. A pre-Pennsylvanian areal geologic map, an east-west cross section of Norton County, a contour map on top of the Pre-Cambrian rocks, and a dry hole map of the county are included.
The oil field is situated on the southeastern end of the Cambridge arch. A series of uplifts and tiltings accompanied at various times by orogenic folding comprise the tectonic history of the region. The structure on which the field is located is an elongated northeast-southwest trending anticline of low relief. The northwest flank of the structure was partially truncated by post-Arbuckle erosion. A study of the relation of structure to depth indicates that the axis of the anticline shifts southeastward with depth and that the fold increases in intensity with depth.
Oil accumulation is controlled by a combination of truncation and overlap and change in porosity of the reservoir beds and structure. The similarity of this field to fields of the Central Kansas uplift is discussed.
Evaluation of a Conducting-Paper Analog Field Plotter as an Aid in Solving Ground-Water Problems
Authors: Mack Leslie E.
Published: January 2025

Simple and rapid solutions of complex ground-water flow problems are desirable, Known analogies with fluid flow offer a means to overcome difficult problems with relatively little effort. A potentiometric model called a conducting-paper analog field plotter was chosen to utilize the analogy between fluid flow and electric current conduction. Electrical theory and model experiments show that the plotter cannot be applied accurately to any three-dimensional, steady-state, ground-water flow problems, Two-dimensional studies can be accomplished readily with the plotter, but other devices will have to be utilized for radial flow problems.
The Hydraulic Properties of the Ordovician Rocks at Pittsburg, Kansas
Authors: Stramel G.J.
Published: January 2025

This report describes aquifer tests made in March 1954 and February and March 1955 to determine the coefficients of transmissibility and storage of the Ordovician rocks at Pittsburg, Kansas. The report includes most of the data obtained during the tests and the analysis of the data. The general regional decline of water level in the Ordovician rocks in the Tri-State district is discussed.
The Ordovician rocks are the most important water-bearing beds in the Pittsburg area. They are composed of dolomite, shale, sandy dolomite, and fine-grained sandstone. The rocks do not crop out in the Pittsburg area but crop out many miles to the east in Missouri. The main water-bearing beds lie at a depth of 600 to 1,050 feet at Pittsburg.
The average values of the coefficients of transmissibility and storage computed from the aquifer tests were 250,000 gallons per day (gpd) per foot and 4.6 X 10-4, respectively. The value of the coefficient of transmissibility is high compared to values obtained in other places where similar tests of the aquifer have been made.
To a considerable extent the decline of water level at Pittsburg probably has been due to pumping from mines in the overlying Mississippian rocks, as well as to pumping from the Ordovician rocks themselves.
A huge quantity of water is stored in the Ordovician rocks, which will continue to yield millions of gallons of water per day.
History of Cretaceous Structural Studies in Kansas
Authors: Merriam Daniel F.
Published: January 2025

Five structural maps on top of the Dakota Formation (Cretaceous) in Kansas published in 1905, 1918, 1926, 1954, and 1957 are presented. Each successive map incorporated new information, thus in essence the maps are progress reports over a span of 53 years showing changing concepts of structure in central and western Kansas.
Germanium in Kansas Coals
Authors: Schleicher John A.
Published: January 2025

A detailed spectrographic method for determining the germanium content of coal is described and the results of analyses of twenty Kansas coals from 117 different locations are reported. No definite conclusions are made as to geographic or stratigraphic variation in germanium content. The concentration of germanium in the coal ash ranges from .0018 percent to .0575 percent, and in the total coal from .0006 per cent to .0116 per cent.
Kansas Building Stone
Authors: Risser Hubert E.
Published: January 2025

From the earliest pioneer days stone has been a useful building material within the state of Kansas. Reported value of dimension stone, mainly limestone, produced annually now amounts to several hundred thousand dollars.
Building stone is produced at widely scattered points across the state. Most of the stone produced each year comes from limestone beds of Permian age, but Pennsylvanian, Cretaceous, and Tertiary rocks are also quarried, and Quaternary glacial deposits provide boulders for some structures. Quarrying methods are described.
Kansas stone-processing plants produce stone in every degree of finish. In recent years, production has trended toward cut and finished stone and away from rough building stone.
As timber becomes scarcer and more expensive there is a likelihood that stone will become more widely used in buildings of all types.
Dakota Formation Refractory Clays and Silts in Kansas
Authors: Plummer Norman Plummer
Published: January 2025

Routine ceramic testing (supplemented by chemical analysis and hot load testing) of samples of refractory clay and silt from the Dakota Formation from 25 locations in Kansas showed that some of the clays can be formed into a good grade of semi-silica refractory brick. The brick exhibit excellent volume stability and hot-load-carrying characteristics at temperatures as high as 2500° F.
Petrology of Marine Bank Limestones of Lansing Group (Pennsylvanian), Southeast Kansas
Authors: Harbaugh John W.
Published: January 2025

Limestones of the Lansing Group in the Wilson-Montgomery County, Kansas, area contain small patches of coarsely crystalline calcite that exhibit two types of fabric, one formed by precipitation of calcium carbonate in cavities; the other by recrystallization of carbonate silt or fine skeletal debris by a process termed grain growth.
Filled cavities are associated with leaf-like fragments of algal crusts; which, during deposition, served as umbrellas, catching carbonate silt and skeletal debris on their upper surfaces and maintaining sheltered open spaces beneath. Cavities also were formed between fragments of partly consolidated carbonate silt that formed sedimentary breccias.
Algal crusts and fragments of other organisms tended to accumulate in thickened lenses or banks, which rose above the level of the surrounding sea floor and extended over many square miles. The banks were seemingly too poorly consolidated initially to have formed wave-resistant reefs.
Solution pores in Lansing limestone specimens obtained at outcrops show that small-scale lithologic features have exerted a large effect in localizing pores. Many pores occur within coarsely crystalline mosaics, particularly those formed as open-space precipitates. Other pores are localized at the boundaries of mosaics, at the contacts between individual skeletal particles, within algal crusts, and within dolomitized patches. Fractures, both large and small, also have had large influence in localizing pores. Development of porosity in buried Lansing limestones that serve as oil-reservoir rocks may be influenced similarly.
Preliminary Report on Conodonts of the Meramecian Stage (Upper Mississippian) from the Subsurface of Western Kansas
Authors: Thompson Thomas L. , Goebel Edwin D.
Published: January 2025

Conodonts are microscopic toothlike and platelike structures belonging to an extinct, unknown group of marine animals which probably were bilaterally symmetrical, soft bodied, and free swimming. These fossil structures range from a fraction of a millimeter to about three millimeters in length. They are composed chiefly of calcium phosphate, are either amber or grayish black in color, and are translucent to opaque. Conodonts, known to range from the Lower Ordovician into the Upper Triassic, have a world-wide distribution and have been found to be a useful tool to the stratigraphic paleontologist, despite the fact that there has been little unanimity on the zoological affinity of the animal that bore the conodonts, or on the function that was performed by these structures (Hass, 1962). Conodonts are good index fossils because they are durable, abundant, distinctive, and widespread in their geographic distribution yet restricted in their stratigraphic ranges. Because they are minute, conodonts are well suited for subsurface investigation. They provide a relatively dependable means of correlating different lithologies of biostratigraphic equivalents.
Geology and Ground-Water Resources of Allen County, Kansas
Authors: Miller Don E.
Published: January 2025

Allen County lies within the Osage Plains section of the Central Lowlands physiographic province and includes an area of about 504 square miles. Rocks above the Precambrian basement have an average thickness of about 2,000 feet and are all sedimentary in origin. The consolidated deposits range in age from Cambrian through Pennsylvanian, and the unconsolidated deposits range in age from probable Tertiary through Quaternary. Only rocks of Pennsylvanian, Tertiary(?), and Quaternary age are exposed in the county. The exposed Pennsylvanian rocks have a regional dip to the northwest of about 12 to 15 feet per mile.
The most important bedrock aquifers are the shallow Pennsylvanian limestones and sandstones that have been weathered along joints, fractures, and bedding planes. Potable ground water is usually not found in the county below the base of the Kansas City Group, and in many places the boundary between fresh and saline water is much higher in the stratigraphic section.
Alluvial deposits having an average thickness of about 25 feet in the Neosho River valley should yield 10 to 100 gallons per minute of ground water to wells. Where saturated, Illinoisan terrace deposits should yield moderate amounts of water to wells. In much of the valley, semi-artesian or artesian conditions probably prevail owing to a confining silt which overlies the permeable gravels.
Water from the Quaternary deposits is of good quality but is usually very hard. Water derived from shallow bedrock aquifers is generally higher in dissolved solids content and hardness than water from the Quaternary deposits.
Geology and Ground-Water Resources of Decatur County, Kansas
Authors: Hodson Warren G.
Published: January 2025

Decatur County is a 900-square-mlle area in the High Plains section of northwestern Kansas. The altitude of land surface ranges from about 2,330 to 2,970 feet above mean sea level. The climate is subhumid to semiarid, with a mean annual precipitation of 18.42 inches. The oldest rocks exposed consist of chalk and shale beds of Late Cretaceous age. The Cretaceous rocks crop out in only two small exposures but form the relatively impervious bedrock above which ground water occurs in nearly all the county. The Ogallala Formation of Tertiary (Pliocene) age overlies the Cretaceous rocks in the upland areas and is the most widespread aquifer in the county. Stream erosion has removed the Ogallala Formation along the principal valleys, but streams, through several cycles of alluviation, have subsequently deposited the more permeable sediments in the valleys. Eolian silts of late Pleistocene age mantle much of the upland areas and obscure the stream terraces along the principal valleys.
There are two principal aquifers in the county--the Ogallala Formation that underlies the upland areas and the relatively narrow alluvial deposits in the four major stream valleys. The upland areas have more areal extent than the alluvial valleys, but the highest yielding wells are in the major valleys where most of the irrigation is practiced. Based on population figures and livestock statistics, an estimated 750 to 1,000 acre-feet of ground water is used annually in rural areas for household and livestock purposes. Three cities use a total of about 400 acre-feet of ground water per year. About 17,000 acre-feet of ground water is appropriated for the irrigation of 10,500 acres. Ground water in the county is moderately hard, but its quality is adequate for most purposes.
Structural nature of the Humboldt fault zone in northeastern Nemaha County, Kansas
Authors: Stander Tom W.
Published: January 2025

A six-fold CDP seismic-reflection survey was conducted across 5.3 km (3.3 mi) of partially glaciated land in northeastern Nemaha County, near Bern, Kansas. An 110 easterly dipping slope with a 12-m (40-ft) fault offset is interpreted in the Late Pennsylvanian and Early Permian beds where the seismic line crosses the Humboldt fault. West of this fault, over the Nemaha Ridge, Late Pennsylvanian rocks of the Cherokee Group overlie Precambrian granite basement rocks at a depth of 353 m (1,165 ft) and an elevation of 8 m (26 ft). To the east of the fault, over the Forest City basin, the deepest reflector interpreted is the top of the Cherokee Group at a depth of 563 m (1,845 ft) and an elevation of -166 m (-455 ft) at a well 4 km (2.5 mi.) east of the fault. All of the Late Pennsylvanian and Early Permian rocks in the Forest City Basin above the top of the Cherokee Group have very little structure or dip between the fault zone and the well.
Subsidence across the Antler foreland of Montana and Idaho: Tectonic versus eustatic effects
Authors: Dorobek S. L. , Reid S. K. , Elrick M. , Kominz M. A.
Published: January 2025

Devonian and Mississippian sedimentary rocks of western Montana and east-central Idaho were deposited on a cratonic platform that faced a deep basin to the west. The deep basin in Idaho was a northern extension of the Antler foredeep and formed as a flexural response to loading of the ancient North American continental margin by an inferred arc and thrust belt complex. Subsidence analyses of the Devonian-Mississippian strata indicate episodic subsidence events in the proximal foredeep and adjacent cratonic platform, an area approximately 800 km (500 mi) wide (palinspastic). Isopach maps for this sequence illustrate that many depocenters and paleohighs were geographically coincident across the foreland through time. The Devonian-Mississippian foreland structures had cross-sectional wavelengths of 50-200 km (30-120 mi) and amplitudes of about 50-350 m (160-1,150 ft). Some of these structures were tectonically inverted (i.e., paleohighs became depocenters and vice versa) several times during the 50-60 m.y. represented by this stratigraphic sequence. Many of these generally east-west-trending paleostructures were oriented at high angles to the north-south-trending axis of the Antler foredeep and the inferred strike of the Antler orogenic belt. These foreland structures coincide geographically with structural trends produced during Proterozoic extension, suggesting that the Proterozoic faults were reactivated during Antler convergence. The isopach maps also show progressive southeastward migration of Antler foredeep depocenters from Late Devonian to Early Pennsylvanian time. The southeastward migration of the foredeep depocenter suggests that the maximum thrust load moved progressively southeastward from Late Devonian to Early Pennsylvanian time. The complex patterns of subsidence across the Montana-Idaho foreland do not fit into simple flexural models for vertical loading of unbroken elastic plates. Instead, differential subsidence of the foreland may be related to several mechanisms: (1) flexure of mechanically independent, fault-bounded segments of the foreland produced by areally limited thrust loads (subregional vertical loading); (2) transmission of compressive in-plane stresses through the foreland lithosphere (regional horizontal loading) that may have reactivated Proterozoic fault systems; and (3) waxing and waning of in-plane compressive stresses resulting from the episodic nature of Antler convergence. Results from this study suggest that, in settings where the foreland lithosphere is broken by ancient fault systems, the foreland may exhibit complex patterns of differential subsidence that probably reflect a composite response to both vertical and horizontal loads. Also, the simultaneous pulses of subsidence documented across large parts of the Antler foreland suggest that it may be possible to date episodes of convergence along ancient continental margins, even when the ancient thrust belt complex is poorly preserved.
Are cyclic sediments periodic? Gamma analysis and spectral analysis of Newark Supergroup lacustrine strata
Authors: Kominz Michelle A. , Beavan John , Bond Gerard C. , McManus Jerry
Published: January 2025

Methodologies are suggested for the analysis of cyclic sediments. These include (1) linear analysis to determine whether cycles are of approximately constant duration and whether the relation between thickness and time is facies dependent and (2) multiple prolate-spheroidal windowing spectral analysis to determine whether time-series data indicate periodicities, either of the primary cycles or of higher or lower orders. The results of both methods are compared to a null hypothesis as a semiquantitative test of periodicity. Application of the methods to Newark Supergroup lacustrine cycles suggests that the primary cycles are approximately periodic and record a response to astronomical precession. The time represented by a given thickness of the different facies increases with the depositional water depth of that facies and with decreasing grain size. Precessional index cycles and long-period precessional index beats, or eccentricity, are strongly recorded in the spectra. Spectral results suggest but do not prove lengthening of the periodicities of orbital parameters since 200 Ma.
Geophysical Model from Potential-field Data in Montgomery County, Kansas
Authors: Xia Jianghai
Published: January 2025

Potential-field data (gravity and aeromagnetic data with precision of 0.1 mGal and 3 nT, respectively) are inverted into density/magnetization distribution in the Precambrian basement of Montgomery County, Kansas, by a method of the iterative forward modeling of Xia and Sprowl (1992). The depth to the top of the Precambrian layer is determined by well data. The thickness of the layer is determined by trial-and-error such that the calculated density/magnetization models show reasonable correspondence with known geology. The inverted models agree with observed data to the root-mean-square error and the maximum deviation of 0.16 mGal and 1.4 mGal, respectively for gravity data, and of 5.3 nT and 18.8 nT, respectively, for magnetic data. The observed anomalies have been topographically corrected (for gravity data) and separated from the original anomaly (for gravity and magnetic data). The anomalies used for the inversion are obtained after subtracting the original anomaly's contribution by the subsurface terrane, which is modeled by well data. The inverted results show distribution of higher-than-average density/magnetization in the southwestern basement rock of the county, possibly due to an intrusion of granodiorite containing more than 3% of magnetite.
Midcontinent Rift System in Northeastern Kansas
Authors: Woelk Timothy S. , Hinze William J.
Published: January 2025

One of the major tectonic features of North America is the 1,100-Ma Midcontinent Rift System (MCR). This paleorift now lies largely buried under the thick Phanerozoic cover of the North American Craton; therefore, its trend, extent, and structural nature is detected only by geophysical means and the occasional deep drill hole. The rift was first reported in Kansas by Woollard (1943) as a result of his transcontinental gravity profile and was later to be known as the Midcontinent Gravity High. Subsequent aeromagnetic investigations showed a correlative magnetic anomaly and the feature was renamed the Midcontinent Geophysical Anomaly (MGA). The MGA is recognized as extending from Lake Superior to Kansas (Van Schmus and Hinze, 1985) and southerly into Oklahoma (Yarger, 1981). It is delineated by a positive central high and flanking minima on both gravity and magnetic maps. The rocks associated with the MGA crop out only in the Lake Superior Basin and comprise the classical association of bimodal volcanic, plutonic, and clastic sedimentary units of the "Keweenawan" suite (Morey and Green, 1982; Van Schmus and Hinze, 1985). It is primarily this association of a large volume of mafic and clastic rocks occurring along a long segmented belt which transects the regional pre-existing geologic pattern over most of its length that leads to the interpretation of the MGA and related segments as a rift (Hinze and Braile, 1988).
Growing interest in the Midcontinent Rift System over the past several years, fostered in part by the potential of this Keweenawan rift as a frontier hydrocarbon province, has led to an increased number of deeply penetrating seismic-reflection profiles over the structure. Two studies by the Consortium for Continental Reflection Profiling (COCORP) across the MCR in Kansas and Michigan (Brown et al., 1982; Brown et al., 1983; Serpa et al., 1984), and more recently, seismic lines acquired in Lake Superior as part of the Great Lakes International Multidisciplinary Program on Crustal Evolution (GLIMPCE) image a deep asymmetric central graben with prominent reflectors extending to depths of 30 km (18.6 mi) in places (Behrendt et al., 1988; Cannon et al., 1989). In addition, the seismic lines show that normal faulting played a prominent role in rift development before later compression changed them into high-angle reverse faults.
In 1984-85, Texaco, U.S.A. drilled a hole in northern Kansas (Berendsen et al., 1988) to test the petroleum potential of the "clastic rock assemblage of the MCR. Texaco's interest was spurred in part by the results of the seismic-reflection investigation of the MCR conducted in northern Kansas by COCORP. These drill-hole data have added valuable constraints to understanding the structural style and tectonic evolution of the MCR in northeastern Kansas.
Amplitude Variation with Offset
Authors: Knapp Ralph W. , Hedke Dennis E. , Anderson Neil L.
Published: January 2025

Subsurface variation in the ratio compressional of P-wave velocity to shear (S-) wave velocity, Vp/Vs, yields an opportunity to observe amplitude variation with offset (AVO) effects. Ideally, such variations can be inverted to indicate lithology, porosity, constituent fluids, and/or presence of free gas. In practice, AVO techniques are somewhat limited by factors such as noisy data and actual subsurface materials.
One geological situation to which AVO techniques are ideally suited is the delineation of free gas-bearing sandstones. The dramatic decrease of Vp, relative to sandstone without gas, and the negligible change in Vs results in very large changes in Vp/Vs, i.e., Poisson's ratio. The AVO response is heavily dependent on that one parameter.
Data-quality control is critical with AVO measurements because many of the analyses are done with single trace common offset or CMP gathers, and measured amplitude response is very sensitive to noise. Data acquisition must include a large range of offsets, i.e., angles of incidence, ideally from 0 to 40°. A general rule of thumb is that far offsets need to be about 1.6 times the depth of the zone of interest. Recording of at least two components (vertical and radial) is desirable to rigorously derive true amplitude response of a P-wave reflection; however, the advantage of using a second component may not be truly cost-effective. Measured amplitude can be extremely accurate when corrected from offset information to an estimated true amplitude. Processing must maintain relative amplitude response of a reflection. This consideration affects and limits the use of AGC gain, deconvolution, and other space (trace) or time-adaptive processes. The display of AVO can be in the form of unstacked common offset gathers or CMP (CDP) gathers of instantaneous amplitude. Instantaneous amplitude compensates for phase-response differences on the peak amplitude of the reflection wavelet.
Depositional and Stratigraphic Analysis of Kansas City Group Strata Utilizing High-resolution Seismic Imaging, Montgomery County, Kansas
Authors: Franseen Evan K. , Feldman Howard R. , Anderson Neil L. , Miller Richard D.
Published: January 2025

High-resolution seismic images were obtained of Missourian (Middle Pennsylvanian) strata in Montgomery County, Kansas. The interval imaged included the Mound Valley Limestone through Quivira Shale(?) (Kansas City Group). The length of the seismic line was approximately 400 m (0.25 mi). The 12-fold CDP production line was acquired using an end-on source/receiver geometry. Ground truth was determined using one core on the seismic line, several other cores taken near the line, and from nearby outcrops. A geologic model of the area and synthetic seismogram were used to confirm geologic interpretations. The seismic images revealed some known features, such as dramatic thinning of the Galesburg Shale, and some unknown features, such as channeling in what appears to be the upper part of the Nellie Bly Formation.