dor_id: 4132732

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/541/564

100.1.#.a: Irurzun, María A.; G. Gogorza, Claudia Susana; Sinito, Ana M.; Chaparro, Marcos A. E.; Prieto, Aldo R.; Laprida, Cecilia; Lirio, Juan M.; Navas, Ana M.; Nuñez, Héctor

524.#.#.a: Irurzun, María A., et al. (2014). A high-resolution palaeoclimate record for the last 4800 years from lake la Brava, SE pampas plains, Argentina. Geofísica Internacional; Vol. 53 Núm. 4: Octubre 1, 2014; 365-383. Recuperado de https://repositorio.unam.mx/contenidos/4132732

245.1.0.a: A high-resolution palaeoclimate record for the last 4800 years from lake la Brava, SE pampas plains, Argentina

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2014

264.#.1.c: 2014-10-01

653.#.#.a: cambios paleoclimáticos; magnetismo de roca; testigos sedimentarios; América de Sur; nivel de la laguna; eventos secos; palaeoclimatic changes; rock magnetism; sediment cores; South America; lake level; dry events

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/541

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/541

041.#.7.h: spa

520.3.#.a: Climatic changes are reflected in variations of different parameters. Sequences of lake sediments are good sources of this information because they provide continuous and detailed records of palaeoclimatic changes. In order to determine the changes in climate in SE Pampas plain,in this paper we present a series of rock magnetic studies performed on a bottom core collected from Lake La Brava (Argentina). In order to establish lake level variations, we also measure total sulphur, organic and inorganic carbon (TS, TOC and TIC) content,alkaline elements, light and heavy metals and changes in vegetation communities. Five radiocarbon age determinations were made from samples of organic-rich clay and calibrated ages were calculated. The averaged sediment accumulation rate is 1.3 mm/yr and the sequence represents a temporal extent of about 4800 calibrated years before the present (cal. BP). The main aim was to reconstruct the hydrological balance of the lake, the changes in erosional strength and sediment supply within he catchment area since the Middle Holocene, and to explore the extent to which these may be linked to changes in climate and/or human activities. The results of this work and previous studies suggest periodic changes from cooler to warmer and humid conditions. Relationships between submerged and emergent plants are consistent with the behaviour of magnetic susceptibility. TOC changes suggest wet environment during magnetic enhancement. Floods and lower lake level events were identified in detail. Changes in sediment contribution and depositional processes for the last 50 cal. BP are caused by human impact, particularly by the use of natural resources.doi: https://doi.org/10.1016/S0016-7169(14)70072-8

773.1.#.t: Geofísica Internacional; Vol. 53 Núm. 4: Octubre 1, 2014; 365-383

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 365-383

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.1016/S0016-7169(14)70072-8

handle: 24024aaf1a023a54

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2014-09-30 17:53:22.0

file_modification_date: 2022-07-08 18:53:40.0

file_creator: María A. Irurzun

file_name: 2518e8afabac579afa665488ca8fbfbd3274a99123bd013a72cf4d018f091666.pdf

file_pages_number: 19

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245.1.0.b: A high-resolution palaeoclimate record for the last 4800 years from lake la Brava, SE pampas plains, Argentina

last_modified: 2023-06-20 16:00:00

license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es

license_type: by-nc-sa

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