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
file_format_version: application/pdf; version=1.4
file_size: 1061215
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
No entro en nada
No entro en nada 2