Article
Environmental Sciences
Alexander G. Lopez, Raymond G. Najjar, Marjorie A. M. Friedrichs, Michael A. Hickner, Denice H. Wardrop
Summary: Public awareness of microplastics and their presence in bodies of water is increasing. Estuaries, such as the Chesapeake Bay, are believed to act as filters for riverine microplastics, with a majority of microplastics remaining in the estuary rather than reaching the ocean. Various factors such as particle density, size, and shoreline characteristics play a role in the transport and fate of microplastics, with buoyant microplastics being more mobile and likely to reach coastlines closer to their river sources.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Fei Da, Marjorie A. M. Friedrichs, Pierre St-Laurent, Elizabeth H. Shadwick, Raymond G. Najjar, Kyle E. Hinson
Summary: This study reveals strong seasonal and spatial variability in the decadal trends of the surface carbonate system in Chesapeake Bay over the past three decades. Increases in atmospheric CO2 and reductions in nitrate loading are identified as primary drivers of these changes.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Geography, Physical
Mariane Candido, Cristiano Von Muhlen, Debora Diniz, Rafael Guedes Milheira
Summary: Discussions on the relationships between human groups and the environment are important in global archaeology. In South America, earthen mound sites ethnically linked to specific indigenous groups reveal distinct cultural and morphological characteristics. This study uses interdisciplinary research to analyze the formative processes and role of earthen mounds in southern Brazil, providing new insights into the interactions between mound communities and their environment.
QUATERNARY INTERNATIONAL
(2021)
Article
Geology
Pricilla Souza, Ioannis Y. Georgiou, Duncan M. Fitzgerald, Zoe J. Hughes, Nick C. Howes, Mark A. Kulp
Summary: This study analyses the sedimentary facies and relationships of six active tidal point bars. Nine sedimentary facies were identified, which can be used to characterize tidal point bars in other depositional settings. The study also found that the increase in tidal influence leads to heterogeneous architectures and variations in sedimentary facies associations.
Article
Geography, Physical
Yanan Li, Longyi Shao, Christopher R. Fielding, Dewei Wang, Guangyuan Mu
Summary: The study of the Carboniferous-Permian strata in the Anhe coalfield in Henan Province, northern China, revealed an environmental evolution from offshore marine to delta plain to lowland alluvial plain environments, with a transition from humid to semi-arid conditions.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geology
Diego Torrome, Marcos Aurell, Beatriz Badenas
Summary: This study reconstructs a complex sedimentary environment in the northeastern margin of the South Iberian Ramp, dominated by carbonate-mud deposition from the middle Santonian to lower Campanian. The sedimentation is primarily controlled by climate-driven sea level oscillations, resulting in a well-defined stratigraphic architecture.
SEDIMENTARY GEOLOGY
(2022)
Article
Geography, Physical
Victor Cartelle, Iria Garcia-Moreiras, Natalia Martinez-Carreno, Castor Munoz Sobrino, Soledad Garcia-Gil
Summary: Incised valleys represent dynamic coastal and shelf systems in continuous change in response to different drivers. The sedimentary record offers valuable data to understand the effects of drivers like sea-level rise on coastal systems and provides records of palaeoenvironmental changes. The study of the Ria de Arousa in NW Spain reveals a complex interaction between sea-level rise rates and antecedent morphology, influencing sediment dynamics and facies distribution.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Environmental Sciences
Salvatore Distefano, Fabiano Gamberi, Niccolo Baldassini, Agata Di Stefano
Summary: Sea-level variations lead to the development of coastal environments in different positions of the continental shelf, with varied characteristics influenced by a range of processes. The morphology of the continental shelf, impacted by tectonic activity and eustatism, plays a crucial role in controlling coastal features and preservation.
Article
Geography, Physical
Ciro Cerrone, Valentino Di Donato, Stefano Mazzoli, Gaetano Robustelli, Michele Soligo, Paola Tuccimei, Alessandra Ascione
Summary: Paleoshorelines were discovered in the eastern margin of the Campania Plain, providing new evidence for the tectonic and sedimentary processes governing the Quaternary development of the area. These paleoshoreline remnants are associated with three marine terraces mainly from the late Middle Pleistocene, influenced by a extensional fault system controlled by horizontal extension. The study gives insights into the regional tectonics controlling the formation of the Campania Plain basin.
Article
Geography, Physical
Giuseppe Aiello, Vincenzo Amato, Pietro P. C. Aucelli, Diana Barra, Giuseppe Corrado, Paola Di Leo, Halinka Di Lorenzo, Brian Jicha, Gerardo Pappone, Roberta Parisi, Paola Petrosino, Elda Russo Ermolli, Marcello Schiattarella
Summary: Two 16 m-deep boreholes were drilled in the Garigliano Plain, Italy, revealing the sedimentary and morphological evolution during the Late Quaternary. A comparison with other coastal plains of central and southern Italy highlighted differences, especially concerning the MIS 5.5 and the Holocene. The presence of products of the Campanian Ignimbrite and a tephra layer dated at 124.5 ka was reported for the first time in the subsurface of the southern part of the Garigliano Plain.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geography, Physical
Giuseppe Corrado, Giuseppe Aiello, Diana Barra, Paola Di Leo, Dario Gioia, Minervino Amodio Antonio, Roberta Parisi, Marcello Schiattarella
Summary: A multidisciplinary study of a sector of the Ionian coastal belt in southern Italy was conducted using data from new boreholes and geomorphological observations to define the Late Quaternary morpho-sedimentary evolution. The research revealed significant changes in the depositional setting within the coastal plain, anomalies in sea-level reference points, and suggested a recent tectonic uplift as the explanation.
QUATERNARY INTERNATIONAL
(2022)
Article
Geochemistry & Geophysics
Kaixi Jiang, Chunming Lin, Chengguo Guan, Li Peng, Xia Zhang, Chunfang Cai, Qilin Xiao, Shuya Huang
Summary: This study compared the fractionation of bulk organic carbon isotopes in Quaternary coastal plain incised valley sediments between the acid chromium reduction (ACR) and standard decarbonation (SD) methods. The results showed a negative bias in the ?13Corg values of ACR compared to SD, with ACR potentially losing more labile organic carbon and/or volatile organic compounds. The study suggests caution should be used when applying ACR to sediments with high TOC contents, as it may cause a significant offset in the ?13Corg values.
APPLIED GEOCHEMISTRY
(2021)
Article
Environmental Sciences
Esther Lee, Joshua M. Epstein, Matthew J. Cohen
Summary: Depressional wetlands play a crucial role in wetland landscapes by storing and releasing water, providing habitat, and influencing carbon and nutrient cycling. The frequency and importance of surface connectivity in these wetlands is poorly understood, but our research shows that it is vital for the export of water-borne materials and numerous hydrologic and habitat services. Understanding and quantifying this surface connectivity is essential for evaluating the restoration of wetland landscape functions.
WATER RESOURCES RESEARCH
(2023)
Article
Geology
Peter J. Sugarman, Kenneth G. Miller, James Browning, Peter P. McLaughlin, Denise K. Kulhanek
Summary: This study utilizes sequence stratigraphy and biostratigraphy to analyze geological samples from New Jersey, identifying and mapping major sequence boundaries of the late Cretaceous period and demonstrating the impact of sea-level lowering. The research reveals that the Magothy Formation is influenced by multiple small to moderate river sources, thickening towards the northeast along Long Island. Overall, the deltaic depositional system remained relatively stable despite low-amplitude sea-level variations.
Article
Geosciences, Multidisciplinary
Sanjoy Roy, Santa Pandit, Mossammat Papia, Md Masudur Rahman, Jan Christian Otto Rehder Ocampo, Mohammad Arfar Razi, Pablo Fraile-Jurado, Naser Ahmed, Muhammad Al-Amin Hoque, Md Mehedi Hasan, Jakeya Yeasmin, Md Sakhawat Hossain
Summary: This study assessed the levels of risk to coastal erosion in the Meghna estuary in Bangladesh by integrating physical, environmental, and socio-economic geospatial data. The results showed high areas of hazard, vulnerability, and exposure to erosion, with different levels of risk identified across the study area. The geospatial distribution of risk categories can assist authorities in formulating improved erosion risk mitigation policies in the dynamic estuary.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2021)
Article
Geology
Bruno Valle, Patrick Fuehr Dal' Bo, Marcelo Mendes, Julia Favoreto, Ariely Luparelli Rigueti, Leonardo Borghi, Roberto Silva
Article
Geosciences, Multidisciplinary
Caroline L. Cazarin, Francisco H. R. Bezerra, Leonardo Borghi, Roberto Santos, Julia Favoreto, Jose A. Brod, Augusto S. Auler, Narendra K. Srivastava
MARINE AND PETROLEUM GEOLOGY
(2019)
Review
Geology
Roberto Silva Jr, Aristoteles de Moraes Rios-Netto, Silvia Clara Silva, Bruno Valle, Leonardo Borghi, Frances Abbots-Queiroz
CRETACEOUS RESEARCH
(2020)
Article
Geography, Physical
Bruno Valle, Patrick Fuhr Dal' Bo, Marcelo Mendes, Julia Favoreto, Ariely Luparelli Rigueti, Leonardo Borghi, Joalice de Oliveira Mendonca, Roberto Silva
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2019)
Article
Geosciences, Multidisciplinary
Marcelo de A. Carvalho, Josiane B. Plantz, Thiago G. Carelli, Gustavo Santiago, Viviane S. F. Trindade, Leonardo Borghi
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2019)
Article
Geosciences, Multidisciplinary
Pedro Miloski, Sergio de Castro Valente, Julio Cezar Mendes, Cicera Neysi de Almeida, Francisco de Assis Negri, Silvia Regina de Medeiros, Alan Wanderley Miranda, Artur Corval, Leonardo Borghi
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2020)
Article
Geosciences, Multidisciplinary
Bernardo Vazquez-Garcia, Daiane Ceolin, Gerson Fauth, Leonardo Borghi, Bruno Valle, Aristoteles De Moraes Rios Netto
Summary: This study presents taxonomic reports and biostratigraphic inferences of ostracods based on the basal section of the cored well UFRJ-2-LRJ-01-SE in the Votorantim quarry, Sergipe-Alagoas Basin, Brazil. A total of 52 ostracod species were identified, including five new species. The biozones proposed with ostracodes coincide with the biozones of calcareous nannofossils found in the cored well.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Joao M. P. Gomes, Aristoteles M. Rios-Netto, Leonardo Borghi, Ismar de Souza Carvalho, Joao G. Mendonca Filho, Lilia D. Sabaraense, Bruno C. Araujo
Summary: The study of upper Crato Member in the Araripe Basin applied cyclostratigraphic analysis to estimate sediment accumulation rates related to astronomical cycles. By analyzing the laminated limestone and investigating environmental changes, research identified Milankovitch and Suess high frequency solar cycles, determining deposition rate and time span involved.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Victor Matheus Joaquim Salgado-Campos, Ismar de Souza Carvalho, Luiz Carlos Bertolino, Thamiris Agatha Duarte, Bruno Cesar Araujo, Leonardo Borghi
Summary: The study on the mineralogical and lithogeochemical characterization of the Crato Member lutites revealed regional arid paleoclimate conditions and subtle differences in paleoprecipitation and provenance. Analysis identified tidal-dominated delta mouth bar facies in the lower Tres Irma quarry with drier conditions, while a marginal paleolagoon facies in the upper quarry indicated wetter conditions. Additionally, lithogeochemical data suggested provenance from different geological rocks.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Environmental Sciences
Lazaro Laut, Pierre Belart, Thiago Carelli, Maria Virginia Alves Martins, Vanessa Laut
Summary: This study examined living foraminiferal assemblages in Vermelha Lagoon, the most hypersaline lagoon in Brazil, in order to understand the biodiversity and ecology of foraminifera in confined hypersaline environments and assess the ecosystem's quality status. The dominant foraminiferal species were miliolids, mainly Quinqueloculina seminula and Ammonia tepida, which differed from those typically found in hypersaline lagoons with carbonate sand-rich sediments. Salt production in the lagoon led to hypertrophic conditions in the sediment, severely impacting the foraminiferal community. The distribution of miliolid species was influenced by organic matter, particularly carbohydrates, while rotaliid species were related to protein and lipid concentrations. Five regions with different ecological characteristics and sediment trophic states were identified based on the distribution of foraminiferal species and their responses to environmental variables. The central pond was considered the most favorable environment, while the western pond and the vicinity area of stromatolite field in the eastern pond were the least favorable regions due to eutrophication status.
ESTUARIES AND COASTS
(2022)
Article
Geology
Victor Matheus Joaquim Salgado-Campos, Ismar de Souza Carvalho, Luiz Carlos Bertolino, Leonardo Borghi, Aristoteles de Moraes Rios-Netto, Bruno Cesar Araujo, Danielle Cardoso de Souza, Lais de Oliveira Ferreira, Fabia Emanuela Rafaloski Bobco
Summary: The Codo Formation in the Parnaiba Basin, Brazil, is an important lacustrine depositional system with high organic matter content and similarities to the Brazilian Pre-salt interval. This study provides new mineralogical and lithogeochemical data to improve understanding of the environmental, climatic, and provenance evolution of the Codo deposits.
SEDIMENTARY GEOLOGY
(2022)
Article
Environmental Sciences
Maria Virginia Alves Martins, Anita Fernandes Souza Pinto, Leonardo Borghi, Thiago Goncalves Carelli, Maider Morlote, Daniel Rey, Egberto Pereira, Jose Carlos Martins Ramalho, Fernando Rocha, Mauro Geraldes, Guilherme Loriato Potratz, Wania Duleba, Antonio Tadeu dos Reis, Josefa Varela Guerra, Maria Antonieta Conceicao Rodrigues
JOURNAL OF SEDIMENTARY ENVIRONMENTS
(2020)
Article
Geology
Ariely L. Rigueti, Patrick Fuhr Dal'Bo, Leonardo Borghi, Marcelo Mendes
JOURNAL OF SEDIMENTARY RESEARCH
(2020)
Article
Environmental Sciences
Anita Fernandes Souza Pinto, Jose Carlos Martins Ramalho, Leonardo Borghi, Thiago Goncalves Carelli, Josiane Branco Plantz, Egberto Pereira, Denise Terroso, Werlem Holanda Dos Santos, Mauro Cesar Geraldes, Fernando Rocha, Maria Antonieta Da Conceicao Rodrigues, Lazaro Laut, Maria Virginia Alves Martins
JOURNAL OF SEDIMENTARY ENVIRONMENTS
(2019)
Article
Geosciences, Multidisciplinary
David Dominguez-Santos, Daniel Valderrama, Ahmet Utku Yazgan
Summary: This document presents a study comparing the spectra of large-magnitude seismic records in Chile between 2012 and 2022 with the design spectra of NCh433 and D. S 61. The aim is to determine if Chile's seismic-resistant regulations are updated to the existing reality and propose new design spectra that better represent the seismic activity in Chile during the last decade.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Prabhu Palanisamy, Vivek Sivakumar, Priya Velusamy, Logesh Natarajan
Summary: Shoreline changes in the southern coast of Rio de Janeiro, Brazil, were analyzed from 1986 to 2018. The study found that both natural and human factors significantly impact shoreline changes. The findings provided important insights into predicting future shoreline positions and identifying vulnerable regions. Additionally, human activities were found to influence shoreline change models, emphasizing the need for effective management strategies to protect ecosystems and communities.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Irina Salgado Bernal, Periyasamy Sivalingam, Armando Martinez Sardina, Michel Manduca Artiles, Maria E. Carballo Valdes, John Pote
Summary: This study investigated the presence of 15 toxic metals in surface sediment in a tropical river ecosystem in Cuba. The results showed that the sediments had higher concentrations of four metals compared to Cuban norms. Various contamination indices were calculated, and correlations analysis revealed the main sources of contamination. The study provides important information for the management of the river and emphasizes the need for metal pollution control and monitoring.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Camila Morgan, Eduardo Morgado, Miguel-Angel Parada, Raimundo Brahm, Francisca Mallea-Lillo
Summary: Lanin volcano is a composite volcano in the Andes, which has erupted lava flows with different compositions. The volcano's magma reservoir contains a crystal mush, and the pre-eruptive conditions include temperature, pressure, and oxygen fugacity. Fractional crystallisation has led to the evolution of the magma with different compositions.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Benjamin Idini, Sergio Ruiz, Jean-Paul Ampuero, Felipe Leyton, Efrain Rivera
Summary: This study investigates the role of wedge integrity on the frequency content of strong ground motion produced by subduction earthquakes in Northern Chile. The results show that the frequency characteristics of seismic waves vary with hypocentral distance, indicating lateral variations in anelastic attenuation due to the heterogeneous tectonic structure.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)