Revista Mexicana De Ciencias Geologicas最新文献

{"title":"Análisis de flujos de escombros desde un enfoque dendrocronológico en Ixtacamaxtitlán, Sierra Norte de Puebla, México","authors":"Marco Antonio Pablo-Pablo, Osvaldo Franco-Ramos, Irasema Alcántara-Ayala","doi":"10.22201/cgeo.20072902e.2020.2.1556","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.2.1556","url":null,"abstract":"Owing to their potential consequences, such as the disaster triggered by hundreds of landslides in October 1999 in the mountain range Sierra Norte de Puebla, mass movement processes are among the most significant geomorphological hazards in Mexico. In this paper, we presented the reconstruction and analysis of debris flows at two valleys located on the Tenextepecuaco mountain in the Sierra Norte de Puebla, based on geomorphologic and dendrogeomorphic methods. From 37 Juniperus deppeana trees we made a Local Reference Chronology, also to dating and mapping the debris flow events and finally for determine the stability/instability of the landforms using the age of the trees. The comparative analysis of the maximum rainfall series in 24 hours, for the period from May to October from 1992 to 2013, and the tree-ring width index suggested that in August 2007 and August 2010 two channels of the western valley were reactivated triggered by heavy rainfall amounting 93 and 56 mm, respectively. As a result of such event, some tree-rings series recorded a growth suppression, and that was also observed in satellite images by Google EarthTM through changes in the vegetation cover. Other trees showed a less growth suppressions in 2013 and the channels were kept active. Since 2014, some trees showed a growth release, and recolonization of trees was also identified in the satellite imagery by Google EarthTM, suggesting an apparent geomorphological stability. The applied methodology showed the potential of Juniperus deppeana to be used for dendrogeomorphic studies in México, also in others geomorphic context. Additionally, particular results of the study can contribute to the existing efforts on prevention and mitigation of natural hazards within the regional context.","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"49 1","pages":"109-120"},"PeriodicalIF":0.8,"publicationDate":"2020-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84464604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Concentraciones de gas radón (222Rn) en suelo de la zona urbana de Morelia, Michoacán, México y su relación con fallas potencialmente sísmicas y asociadas con el proceso de subsidencia-fluencia","authors":"Octavio Lázaro-Mancilla, Víctor Hugo Garduño-Monroy, Avith Mendoza-Ponce, A. Figueroa-Soto, Ricardo Vázquez-Rosas, Guadalupe Mirella Ramírez-Tapia, Alejandra Cortés-Silva","doi":"10.22201/cgeo.20072902e.2020.2.1547","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.2.1547","url":null,"abstract":"This work reports on the concentration levels of radon gas (222Rn) coming through the soil in the urban area of the city of Morelia, Michoacán, Mexico and its relationship with potentially active geological faults and with faults associated to subsidence-creep-fault processes. The average measurement of the radon gas concentration of 86 stations distributed in the city of Morelia is 4028.56 Bq/m3. In addition, a variographic analysis was carried out for 222Rn gas concentrations data to determine the possible existence of anisotropy. From this analysis it is inferred that the radon gas in the city of Morelia presents a hybrid anisotropy, with preferential direction N50°E, which suggests that the spatial distribution is driven by the extensional stress field on the Morelia-Acambay fault system (σ2=NE-SW y σ3=NW-SE). Using the natural neighbor interpolation method, a map of the radon gas concentrations in the urban area was constructed to visualize its distribution. In addition, by calculating the baseline-anomaly threshold, it was possible to identify the areas with Concentraciones de gas radón (222Rn) en suelo de la zona urbana de Morelia, Michoacán, México y su relación con fallas potencialmente sísmicas y asociadas con el proceso de subsidencia-fluencia Octavio Lázaro-Mancilla1,*, Víctor Hugo Garduño-Monroy2, Avith Mendoza-Ponce3, Ángel Figueroa-Soto4, Ricardo Vázquez-Rosas4, Guadalupe Mirella Ramírez-Tapia5 y Alejandra Cortés-Silva6 1 Laboratorio de Sismología y Geofísica Aplicada, Instituto de Ingeniería, Universidad Autónoma de Baja California (UABC), Blvd. Benito Juárez y Calle de la Normal S/N, Mexicali, B.C., C.P. 21280, México. 2 Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Ciudad Universitaria, Morelia, Michoacán, México. 3 Posgrado en Ciencias de la Tierra, Escuela Nacional de Estudios Superiores, Universidad Nacional Autónoma de México (UNAM), Antigua Carretera a Pátzcuaro No. 8701, C.P. 58190, Morelia, Michoacán, México. 4 CONACyT-Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Ciudad Universitaria, Morelia, Michoacán, México. 5 REDGFU, Constitución de Apatzingán No. 47, C.P. 58170, Morelia, Michoacán, México. 6 Departamento de Recursos Naturales, Instituto de Geofísica, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Coyoacán, Ciudad de México, México. * olazaro@uabc.edu.mx, olazaro2000@yahoo.com REVISTA MEXICANA DE CIENCIAS GEOLÓGICAS v. 37, núm. 2, 2020, p. 157-177 DOI: http://dx.doi.org/10.22201/cgeo.20072902e.2020.2.1547 158 Lázaro-Mancilla et al. RMCG | v. 37 | núm. 2 | www.rmcg.unam.mx | DOI: http://dx.doi.org/10.22201/cgeo.20072902e.2020.2.1547 anomalous concentrations. The results of this investigation indicate a relationship between high-risk radon zones and active faults. A clear example is La Paloma fault, where four of the seven stations located near this fault yielded ","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"12 1","pages":"157-177"},"PeriodicalIF":0.8,"publicationDate":"2020-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73133650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caracterización de Necrosoles en el bosque seco tropical en Colombia: un acercamiento desde la geología forense","authors":"S. Vélez, Sergey Sedov, Timisay Monsalve, S. Cardona-Gallo, M. Quiroz, Elizabeth Solleiro-Rebolledo","doi":"10.22201/cgeo.20072902e.2020.2.1539","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.2.1539","url":null,"abstract":"Los Necrosoles son suelos relacionados con entierros cuyas propiedades resultan de las condiciones particulares del entorno de la inhumación. Su caracterización por medio de técnicas de geociencia forense, puede aportar herramientas que maximicen la efectividad de la búsqueda de entierros clandestinos, situación relevante en Latinoamérica. El objetivo de este estudio fue identificar rasgos y procesos pedo-antropogénicos que caracterizan a los Necrosoles, específicamente, se identificaron diferencias micromorfológicas y químicas. Se estudiaron tres perfiles de suelo de cementerios rurales en el cañón del río Cauca, en Colombia, y dos perfiles de la misma zona, fuera de la influencia de los cementerios. La comparación de ambos, perfil dentro vs perfil fuera del cementerio, permitió determinar las variaciones en las propiedades producto del impacto de los entierros. Las muestras de los suelos fueron caracterizadas químicamente y mediante métodos micromorfológicos. Los resultados demuestran que las variaciones entre los suelos de cementerios, respecto a sus referentes naturales, son la presencia de microfragmentos de madera de ataúd y de hueso, minerales con orientaciones paralelas, concentración alta de raíces finas al nivel del entierro y mezclas de agregados pedogénicos entre una matriz no pedogénica. Desde el punto de vista químico, las variaciones observadas fueron la mayor concentración de S, Fe móvil, P, además del incremento en la capacidad de intercambio catiónico del suelo. El presente estudio demostró la utilidad de la micromorfología de tres suelos como herramienta en la confirmación de la presencia de Necrosoles a partir de métodos usados en la arqueología y geociencia forense. Se proponen rasgos diagnósticos modelo para la identificación de entierros clandestinos, en particular para zonas que reúnan condiciones de contextos pedológico, geomorfológico y bioclimático similares y que serán útiles en la geociencia forense.","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"18 1","pages":"146-156"},"PeriodicalIF":0.8,"publicationDate":"2020-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75155733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"U-Pb geochronology of rutile: deciphering the cooling history of the Oaxacan Complex granulites, southern Mexico","authors":"Miguel Gerardo Adame-Martínez, L. Solari, C. Ortega-Obregón, Fanis Abdullin","doi":"10.22201/cgeo.20072902e.2020.2.1557","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.2.1557","url":null,"abstract":"Rutile (TiO2) is a heavy mineral, commonly found as accessory in many lithologies, such as basic igneous rocks, high-grade metamorphic units, as well as a detritus in sedimentary clastic rocks. Its chemical composition is sensitive to the crystallization environment, allowing a characterization of either metabasic or metasedimentary protoliths in metamorphic rocks. Thanks to the capability to accept U in its crystalline network, at least in metasedimentary, high-grade protoliths, rutile can be dated by U-Pb geochronology. Furthermore, its closure temperature of ca. 600 °C for the U-Pb system makes rutile a suitable chronometer, complementary to zircon, to unravel provenance and exhumation paths in both sedimentary siliciclastic cover and basement units. Besides, the Zr-in thermometer allows for a very precise calculation of the rutile crystallization temperature. \u0000In the example case presented here, focused on granulite facies units of the Grenvillian Oaxacan Complex (OC), rutile crystallisation took place in the range 808–873 °C. Data for different localities indicate that cooling and exhumation after the Zapotecan granulite facies event (ca. 990 Ma) was heterogeneous among the different tectonic slices that constitute the OC. Cooling occurred in the central sector (Nochixtlán-Oaxaca) right after the granulite peak, with fast cooling rates of ca. 40 °C/Ma. To the north and south, the cooling to ca. 600 °C was much slower, with calculated cooling rates of ca. 3 °C/Ma for the northern OC outcrops in Coatepec (Puebla) to ca. 6 °C/Ma south of Ejutla (Oaxaca). This can be related to a combination of factors, such as an early collapse of some sectors of the orogen, a change of conditions in the subducing plate, or more in general, to a sudden change in the geodynamic conditions during the Zapotecan orogeny and Amazonia-Baltica amalgamation. \u0000This application example to some metasedimentary lithologies belonging to the OC demonstrates how the exhumation after the Zapotecan granulite facies event (ca. 990 Ma) was heterogeneous among the different tectonic slices that compose the OC, having occurred in the central sector (Nochixtlán-Oaxaca) right after the granulite peak, with fast cooling rates of ca. 40 ºC/M.y., whereas to the North and South the cooling to ca. 600 ºC was much slower, with calculated cooling rates of ca. 3 ºC/M.y. (north, OC outcrops in Coatepec, Puebla) to ca. 5.5 ºC/M.y. south of Ejutla (Oaxaca). This can be related to a combination of factors, such as an early collapse of some sectors of the orogen, change of conditions in the subjecting plate, or more in general, to a sudden change in the geodynamic conditions during the early stages of the Rodinia amalgamation. \u0000This example sharply illustrates the advantage of employing microanalytical techniques, able to resolve restricted crystal-domain chemical variations, to obtain accurate and precise temperature and age values. Furthermore, it is paramount to combine several mineral species","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2020-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47040304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revisiting the Cupidito unit (Cupido Formation) along peritidal carbonates from northeastern Mexico","authors":"Felipe Torres de la Cruz, E. Chacón-Baca, Gabriel Chávez-Cabello, M. I. Hernández-Ocaña","doi":"10.22201/cgeo.20072902e.2020.1.1095","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.1.1095","url":null,"abstract":"Depositional episodes are readily identified along representative localities of the Lower Cretaceous Cupido platform in northeastern Mexico. The basal part of the Cupido Formation exhibits a progradational reef platform that, at the upper limit, is truncated by a sequence boundary defined by a breccia. This breccia marks the development of a peculiar sedimentary facies informally known as the Cupidito unit, a distinctive stratigraphical unit in northeastern Mexico that remained uninterpreted for decades. Through the analysis of facies, microfacies and stable isotope comparisons from representative localities (Potrero Chico, Potrero de García, La Huasteca, La Muralla and Puerto Mexico) and from other previously reported outcrops, this work describes six diagnostic features for Cupidito and an improved stratigraphic model is proposed. The depositional sequence suggests a broad flat-topped platform with a general low organic productivity and restricted conditions followed by recurrent inundations of lagoon waters. Before drowning, this carbonate platform remained under equilibrium conditions interrupted by short pulses of relative higher-temperatures (48.3 °C and 39.2 °C). Coral-rudist-stromatoporoid patch-reefs with inferred inter-tropical temperatures between 31.5 °C and 32.2 °C originated as a progradational response to the instauration of a new Sequence Boundary at the base of Cupidito.","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"46 1","pages":"9-25"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77785239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fauna de tiburones y rayas de la Formación Tirabuzón (Plioceno) en el Cañón El Álamo, sierras de La Reforma – El Aguajito, Baja California Sur, México","authors":"Marcela Lira-Beltrán, Gerardo González-Barba, J. L. Macias, Azucena Solis-Añorve, F. García-Tenorio, Laura García-Sánchez, Susana Osorio-Ocampo","doi":"10.22201/cgeo.20072902e.2020.1.1421","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.1.1421","url":null,"abstract":"RMCG | v. 37 | núm. 1 | www.rmcg.unam.mx | DOI: http://dx.doi.org/10.22201/cgeo.20072902e.2020.1.1421 Lira-Beltrán, R.M., González-Barba, G., Macías, J.L., Solis-Añorve, A., García-Tenorio, F., García-Sánchez, L., Osorio-Ocampo, S., 2020, Fauna de tiburones y rayas de la Formación Tirabuzón (Plioceno) en el Cañón El Álamo, sierras de La Reforma – El Aguajito, Baja California Sur, México: Revista Mexicana de Ciencias Geológicas, v. 37, núm. 1, p. 40-63. RESUMEN","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"445 1","pages":"40-63"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82892033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelado de volúmenes utilizando análisis geomorfológico para el estudio de sedimentos aportados por deslizamientos en el flanco sur del Volcán Pico de Orizaba, México","authors":"Gabriel Legorreta-Paulín, Rutilio Miguel Castro, Lilia Arana-Salinas","doi":"10.22201/cgeo.20072902e.2020.1.1548","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.1.1548","url":null,"abstract":"RMCG | v. 37 | núm. 1 | www.rmcg.unam.mx | DOI: http://dx.doi.org/10.22201/cgeo.20072902e.2020.1.1548 Legorreta-Paulín G., Castro, R.M., Arana-Salinas, L., 2020, Modelado de volúmenes utilizando análisis geomorfológico para el estudio de sedimentos aportados por deslizamientos en el flanco sur del Volcán Pico de Orizaba, México: Revista Mexicana de Ciencias Geológicas, v. 37, núm. 1, p. 80-88. RESUMEN","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"17 1","pages":"80-88"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74834687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imprints of historical pollution and the 218-60 BCE tsunamigenic period in southwestern Spain","authors":"M. L. González-Regalado, G. Monge, M. Carretero, M. Pozo, J. Rodríguez-Vidal, L. Cáceres, M. Abad, J. M. Campos, J. Bermejo, J. Tosquella, T. Izquierdo, M. Prudencio, M. Dias, R. Marques, P. Gómez, A. Toscano, Verónica Romero, F. Ruiz","doi":"10.22201/cgeo.20072902e.2020.1.1543","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.1.1543","url":null,"abstract":"RMCG | v. 37 | núm. 1 | www.rmcg.unam.mx | DOI: http://dx.doi.org/10.22201/cgeo.20072902e.2020.1.1543 González-Regalado, M.L., Monge, G., Carretero, M.I., Pozo, M., Rodríguez-Vidal, J., Cáceres, L.M., Abad, M., Campos, J.M., Bermejo, J., Tosquella, J., Izquierdo, T., Prudêncio, M.I., Dias, M.I., Marques, R., Gómez, P., Toscano,A., Romero, V., Ruiz, F., 2020, Imprints of historical pollution and the 218-60 BCE tsunamigenic period in southwestern Spain: Revista Mexicana de Ciencias Geológicas, v. 37, núm. 1, p. 89-97. ABSTRACT","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"27 1","pages":"89-97"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73433258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temporal and spatial hydrogeochemical evolution and lead isotopic composition of a contaminated stream of Taxco, Guerrero, Mexico","authors":"Natasha Mylena Quevedo-Castañón, O. Talavera-Mendoza, S. Salgado-Souto, J. Ruíz, A. Dótor-Almazán, A. Ramírez-Guzmán, L. Sampedro-Rosas, J. L. Rosas-Acevedo, J. D. Chávez-González","doi":"10.22201/cgeo.20072902e.2020.1.1087","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.1.1087","url":null,"abstract":"RMCG | v. 37 | núm. 1 | www.rmcg.unam.mx | DOI: http://dx.doi.org/10.22201/cgeo.20072902e.2020.1.1087 Quevedo-Castañón, N.M., Talavera-Mendoza O., Salgado-Souto, S.A., Ruiz, J., Dótor-Almazán. A., Ramírez-Guzmán, A.H., Sampedro-Rosas, L., Rosas-Acevedo, J.L., Chávez-González, J.D., 2020, Temporal and spatial hydrogeochemical evolution and lead isotopic composition of a contaminated stream of Taxco, Guerrero, Mexico: Revista Mexicana de Ciencias Geológicas, v. 37, núm. 1, p. 64-79. ABSTRACT","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"37 1","pages":"64-79"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75180628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Profundidad del Punto de Curie y Flujo Térmico en la Zona de Cuencas Offshore de Argentina","authors":"Guillermo Pizarro, F. Ruiz, M. A. Arecco, Marta E. Ghidella","doi":"10.22201/cgeo.20072902e.2020.1.1038","DOIUrl":"https://doi.org/10.22201/cgeo.20072902e.2020.1.1038","url":null,"abstract":"In order to know the thermal distribution and its relationship with tectonic structures studies were conducted in front of the Argentine coast, in the area corresponding to the platform, slope and abyssal plain, in the region ranging from 50° to 66° West and 36° to 50° South. Fourier analysis of the potential fields allows us estimating the Curie point depth (CPD). The variation of the depth to the Curie point is an indicator of lithospheric thermal anomalies, some of which would be associated with variations in lithospheric thickness linked to the phenomena that took place during the separation of the Gondwana continent and opening of the South Atlantic Ocean, such as basins and transfer zones. Maps of Curie point depth and thermal flow were made. These maps were correlated with an isostatically compensated crust 3D model and a crust-upper mantle discontinuity depth 3D model, calculated by gravimetric inversion. This comparative analysis allowed us to interpret tectonic structures, crustal thickness and isostatic decompensation degree on the study area. Higher depths to the Curie point were obtained in the continental crust zone (between 30 and 15 km, approximately) than in the oceanic zone (between 25 and 10 km, approximately). On the continental crust, the shallowest values were found in the offshore basins sectors, in the oceanic crust, the deepest values are below the crust-upper mantle discontinuity level. Profundidad del Punto de Curie y Flujo Térmico en la Zona de Cuencas Offshore de Argentina Guillermo Domingo Pizarro1,2,*, Francisco Ruiz1, María Alejandra Arecco3,4 y Marta Ghidella5 1 Universidad Nacional de San Juan (UNSJ), Facultad de Ciencias Exactas, Físicas y Naturales, Instituto Geofísico-Sismológico Ing. F. Volponi (IGSV), Ruta 12, km 17, C.P. 5407, Jardín de los poetas, Marquesado, Rivadavia, San Juan, Argentina. 2 Universidad Nacional de San Juan (UNSJ), Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Biología, Av. Ignacio de la Roza 590 (O), C.P. 5400, Rivadavia, San Juan, Argentina. 3 Universidad de Buenos Aires, Facultad de Ingeniería, Instituto de Geodesia y Geofísica Aplicadas, Av. Las Heras 2214, 3er piso, C.P. C1127AAR, Ciudad Autónoma de Buenos Aires, Argentina. 4 Universidad de la Defensa Nacional, Facultad de la Armada, Escuela de Ciencias del Mar, Av. Antártida Argentina 425, C.P. C1104ACA, Ciudad Autónoma de Buenos Aires, Argentina. 5 Ministerio de Relaciones Exteriores y Culto, Cancillería Argentina, Instituto Antártico Argentino, 25 de mayo 1143, C.P. B1650HMK, San Martín, Provincia de Buenos Aires, Argentina * guillepizarro@hotmail.com REVISTA MEXICANA DE CIENCIAS GEOLÓGICAS v. 37, núm. 1, 2020, 26-39 I: htt ://dx.doi.org/10.22201/cgeo.20072902e.2020.1.1038 27 CPD en el Offshore de Argentina RMCG | v. 37 | núm. 1 | www.rmcg.unam.mx | DOI: http://dx.doi.org/10.22201/cgeo.20072902e.2020.1.1038 Offshore basins are associated with lithospheric thinning accompanied by thermal anomalies indicated by ","PeriodicalId":49601,"journal":{"name":"Revista Mexicana De Ciencias Geologicas","volume":"1 1","pages":"26-39"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80560656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}