dor_id: 4133150

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/332/317

100.1.#.a: Lounejeva Baturina, E.; Morales Puente, P.; Cabadas Báez, H. V.; Cienfuegos Alvarado, E.; Sedov, S.; Vallejo Gómez, E.; Solleiro Rebolledo, E.

524.#.#.a: Lounejeva Baturina, E., et al. (2006). Late Pleistocene to Holocene environmental changes from δ 13C determinations in soils at Teotihuacan, Mexico. Geofísica Internacional; Vol. 45 Núm. 2: Abril 1, 2006; 85-98. Recuperado de https://repositorio.unam.mx/contenidos/4133150

245.1.0.a: Late Pleistocene to Holocene environmental changes from δ 13C determinations in soils at Teotihuacan, Mexico

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2006

264.#.1.c: 2006-04-01

653.#.#.a: Teotihuacan; isótopos estables del carbono; paleosuelos; cambios climáticos de Cuaternario; México Central; registros arqueológicos; Teotihuacan; carbon stable isotope; paleosols; Quaternary climatic changes; Central Mexico; archeological records

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/332

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/332

041.#.7.h: spa

520.3.#.a: Stable carbon isotopic signature (δ13C) of soil organic matter (SOM) is used as a high–spatial resolution tool to infer environmental changes during late Pleistocene to Present in the Teotihuacan valley, Mexico. Interpretation was based on climatic preferences of C3, CAM and C4 plant groups. δ13Cvalues of modern plant types are clearly distinguished. C3 plants display values around –27%o, while C4 and CAM plants have values around—13%o. Data from soil profiles range from –25.7 to –15.5 %o. Cerro Gordo site δ13Cvaryies around –20%o, indicating long–term, time–stable co–existence between C3 and C4 or CAM plants. The more depleted signatures (–23 ± 2 %o) are, dominated by carbon from C3 vegetation of late Pleistocene swamp paleosols in the Tepexpan profile of the Lake Texcoco. Younger paleosols from lower valley sites, have less depleted values (–17 ± 1) %o, dominated by C4 and CAM carbon. Late Holocene and modern soils present slightly more negative values (1–2 %o) with respect to δ13Cof underlying soils. Our results show 1) an increase of 10–70 % depending on the site, during the transition from the late Pleistocene to early Holocene, and 2) a dominance of C4 vegetation, up to 84%, in valley environment during the middle Holocene. These data support a climatic change from cold and wet conditions in the Last Glacial Maximum and late Pleistocene, to warm and dry conditions in middle Holocene. A slight rise in moisture availability during late Holocene is inferred based on the 4–10% increase in C3 plant carbon in soils from the valley. Conditions remained generally warm and dry, much as they are at present, favouring the development of agriculture in the valley. Our interpretation agrees with results of paleoenvironmental studies at Texcoco Lake based on diatom and pollen analyses in lake.doi: https://doi.org/10.22201/igeof.00167169p.2006.45.2.184  

773.1.#.t: Geofísica Internacional; Vol. 45 Núm. 2: Abril 1, 2006; 85-98

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: 85-98

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

doi: https://doi.org/10.22201/igeof.00167169p.2006.45.2.184

handle: 1e95fbddc10ec1fe

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

856.#.0.q: application/pdf

file_creation_date: 2006-10-05 16:07:38.0

file_modification_date: 2022-05-27 17:27:25.0

file_creator: Lounejeva Baturina E., Morales Puente P., Cabadas Báez H.V., Cienfuegos Alvarado E., Sedov S., Vallejo Gómez E., Solleiro Rebolledo E.

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245.1.0.b: Late Pleistocene to Holocene environmental changes from δ 13C determinations in soils at Teotihuacan, Mexico

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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