Progradation rates of coastal barriers estimated from the 14C age of soil organic matter
10 páginas.-- 8 figuras.-- 2 tablas.-- 49 referencias
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| Format: | artículo biblioteca |
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John Wiley & Sons
2015
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| Subjects: | Coastal bars, Holocene, Organic fraction, Podzols, Accretion rate, |
| Online Access: | http://hdl.handle.net/10261/115607 |
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dig-irnas-es-10261-1156072018-09-12T11:59:05Z Progradation rates of coastal barriers estimated from the 14C age of soil organic matter Boski, Tomasz Angulo, R. J. Souza, María Cristina Barboza, E.G. Knicker, Heike González-Pérez, José Antonio González-Vila, Francisco Javier Coastal bars Holocene Organic fraction Podzols Accretion rate 10 páginas.-- 8 figuras.-- 2 tablas.-- 49 referencias © 2015 John Wiley & Sons, Ltd. The antecedent geomorphological and structural framework combined with nearshore dynamics and sediment budget provided the conditions necessary for the formation of coastal plains along the southern Brazilian littoral during the Holocene. To establish a temporal framework for littoral accretion, we applied 14C dating of humic organic material from the B-horizon of spodosols. The dated soils developed under Atlantic tropical forest, which covers the coastal barriers along the Santa Catarina shoreline of south-east Brazil. The obtained ages point to a highly coherent trend in barrier accretion and indicate that the transfer of organic matter from the surface to the B-horizon has largely been occurring vertically at the same time as the sediment surface was colonized by Atlantic forest. Accretion of the strandplain in the coastal cell of Volta Velha began ca. 6800 cal a BP, initially at a rate of ca. 22cm a-1 and reaching 58cm a-1 during the last 3 ka. Structural analysis of the dated humic material was by analytical pyrolysis and solid-state 13C nuclear magnetic resonance spectroscopy. Both techniques revealed marked compositional differences between the organic matter of different ages, which are discussed in terms of time-dependent degradation processes. This study was supported by CNPq grant No. 472897/2010–1 and 477945/2012–0, CAPES grant PVE 060/2012 (T.B.), and CNPq research grants (R.J.A. and E.G.B.). We thank Karl Statteger and one anonymous reviewer for their valuable comments, which helped to improve this paper. Simon Connor kindly corrected the original manuscript. All authors contributed to this work in equal proportion. Peer Reviewed 2015-05-22T06:43:41Z 2015-05-22T06:43:41Z 2015 2015-05-22T06:43:42Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1002/jqs.2753 issn: 1099-1417 Journal of Quaternary Science 30: 9- 18 (2015) http://hdl.handle.net/10261/115607 10.1002/jqs.2753 http://dx.doi.org/10.1002/jqs.2753 none John Wiley & Sons |
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biblioteca |
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Coastal bars Holocene Organic fraction Podzols Accretion rate Coastal bars Holocene Organic fraction Podzols Accretion rate |
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Coastal bars Holocene Organic fraction Podzols Accretion rate Coastal bars Holocene Organic fraction Podzols Accretion rate Boski, Tomasz Angulo, R. J. Souza, María Cristina Barboza, E.G. Knicker, Heike González-Pérez, José Antonio González-Vila, Francisco Javier Progradation rates of coastal barriers estimated from the 14C age of soil organic matter |
| description |
10 páginas.-- 8 figuras.-- 2 tablas.-- 49 referencias |
| format |
artículo |
| topic_facet |
Coastal bars Holocene Organic fraction Podzols Accretion rate |
| author |
Boski, Tomasz Angulo, R. J. Souza, María Cristina Barboza, E.G. Knicker, Heike González-Pérez, José Antonio González-Vila, Francisco Javier |
| author_facet |
Boski, Tomasz Angulo, R. J. Souza, María Cristina Barboza, E.G. Knicker, Heike González-Pérez, José Antonio González-Vila, Francisco Javier |
| author_sort |
Boski, Tomasz |
| title |
Progradation rates of coastal barriers estimated from the 14C age of soil organic matter |
| title_short |
Progradation rates of coastal barriers estimated from the 14C age of soil organic matter |
| title_full |
Progradation rates of coastal barriers estimated from the 14C age of soil organic matter |
| title_fullStr |
Progradation rates of coastal barriers estimated from the 14C age of soil organic matter |
| title_full_unstemmed |
Progradation rates of coastal barriers estimated from the 14C age of soil organic matter |
| title_sort |
progradation rates of coastal barriers estimated from the 14c age of soil organic matter |
| publisher |
John Wiley & Sons |
| publishDate |
2015 |
| url |
http://hdl.handle.net/10261/115607 |
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