210Pb geochronology and metal concentrations in sediment cores recovered in the Alvarado Lagoon system, Veracruz, Mexico
Por:
Velandia-Aquino, Laura Begon, Botello, V, Alfonso, Ponce-Velez, Guadalupe, Armstrong-Altrin, John S., Ruiz-Fernandez, Ana Carolina, Prado, Blanca, Villanueva-Fragoso, Susana
Publicada:
1 ene 2023
Ahead of Print:
1 abr 2023
Resumen:
Three sediment cores recovered from the Alvarado Lagoon System (ALS) in the Gulf of Mexico were used to reconstruct the history of metals and metalloids and their environmental importance. The sedimentary profiles were dated with 210Pb and verified with 137Cs. Maximum ages of 77 and 86 years were estimated. Sediment provenance was described by sedimentological and geochemical proxies. The chemical alteration index (CIA) and weathering index (CIW) revealed moderate to high intensity of weathering in the source area that is controlled tropical climatic conditions, runoff, and precipitation in the basin that feeds sediments to this coastal lagoon. The Al2O3/TiO2 ratios indicated that the sediments were derived from intermediate igneous rocks. The enrichment factor values revealed the lithogenic and anthropic contribution of metals and metalloids. Cd is classified under the category extremely severe enrichment; agricultural activities, fertilizers, herbicides, and pesticides containing Cd are expected to supply this metal to the ecosystem. Factor Analysis and Principal Components provided two main factors, terrigenous and biological origins; ANOVA indicated that there are significant differences between the cores for the parameters analyzed and revealed that there are differences in depositional environments between the recovery zones of the cores. The ALS presented natural variations associated with the climatic conditions, terrigenous input, and its relationship with the hydrological variations of the main rivers. The contribution of this work was to identify the magnitude of the natural component versus the human contribution, mainly of risk metals such as Cd, to support better management of the hydrological basin that affects the ALS. © 2023 Elsevier Ltd
Filiaciones:
Velandia-Aquino, Laura Begon:
Universidad Nacional Autónoma de México, Posgrado en Ciencias de la Tierra, Instituto de Geología. Av. Universidad N° 3000, UNAM CU, Coyoacán, 04510, Cd. de México, Mexico
Univ Nacl Autonoma Mexico UNAM CU, Posgrad Ciencias Tierra, Inst Geol, Ave Univ N 3000, Cd Mexico, Mexico City 04510, Mexico
Botello, V, Alfonso:
Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Laboratorio de Contaminación Marina, Circuito exterior s/n, CU Coyoacán 04510, Cd. de México, Mexico
Ponce-Velez, Guadalupe:
Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Laboratorio de Contaminación Marina, Circuito exterior s/n, CU Coyoacán 04510, Cd. de México, Mexico
Armstrong-Altrin, John S.:
Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Unidad de Procesos Oceánicos y Costeros, Circuito Exterior s/n, CU Coyoacán, Cd. de México04510, Mexico
Univ Nacl Autonoma Mexico, Unidad Proc Ocean & Costeros, Inst Ciencias Mar & Limnol, Circuito Exterior S-N, Mexico City 04510, Mexico
Ruiz-Fernandez, Ana Carolina:
Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Laboratorio de Geoquímica Isotópica y Geocronología, Joel Monte Camarena s/n, Col. Playa Sur, Mazatlán, Sinaloa82040, Mexico
Univ Nacl Autonoma Mexico, Lab Geoquim Isotop & Geocronol Joel Monte Camarena, Inst Ciencias Mar & Limnol, Col Playa, Mazatlan 82040, Sinaloa, Mexico
Prado, Blanca:
Universidad Nacional Autónoma de México, Instituto de Geología, Departamento de Ciencias Ambientales y del Suelo, Av. Universidad N° 3000, UNAM CU, Coyoacán, Cd. de México04510, Mexico
Univ Nacl Autonoma Mexico, Dept Ciencias Ambientales, Inst Geol, Ave Univ N 3000, Mexico City 04510, Mexico
Villanueva-Fragoso, Susana:
Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Laboratorio de Contaminación Marina, Circuito exterior s/n, CU Coyoacán 04510, Cd. de México, Mexico
Botello, Alfonso, V , Univ Nacl Autonoma Mex, Lab Contaminac Marina, Inst Ciencias Mar & Limnol, Circuito Exterior S-N, Mexico City 04510, Mexico
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