Sedimentary evidences of historical climate and sea level changes in the coast from Cadiz Bay (SW Spain), and their interaction with regional very high-energy oceanic events
The study attempts to establish the depositional history of recent coastal bioclastic sediments from the Cadiz Bay (SW Spain). These deposits are carbonated shelly intercalations interbedded in coastal sands. They are lying to different heights above the present-day sea level. Their 14C ages represe...
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Servicio Geológico Colombiano
2024
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ftdoajarticles:oai:doaj.org/article:e9d51b0e247649c6990bf9d21fc1c1e1 2024-09-15T18:23:46+00:00 Sedimentary evidences of historical climate and sea level changes in the coast from Cadiz Bay (SW Spain), and their interaction with regional very high-energy oceanic events José Manuel Gutiérrez-Mas Ricardo Alvarez Alonso Ángel Sánchez Bellón 2024-07-01T00:00:00Z https://doi.org/10.32685/0120-1425/bol.geol.51.1.2024.718 https://doaj.org/article/e9d51b0e247649c6990bf9d21fc1c1e1 EN ES eng spa Servicio Geológico Colombiano https://doaj.org/toc/0120-1425 https://doaj.org/toc/2711-1318 doi:10.32685/0120-1425/bol.geol.51.1.2024.718 0120-1425 2711-1318 https://doaj.org/article/e9d51b0e247649c6990bf9d21fc1c1e1 Boletín Geológico, Vol 51, Iss 1 (2024) recent climate changes eustatic movements oxygen isotopes Glycymeris nummaria Gulf of Cadiz Spain Geology QE1-996.5 article 2024 ftdoajarticles https://doi.org/10.32685/0120-1425/bol.geol.51.1.2024.718 2024-08-05T17:49:03Z The study attempts to establish the depositional history of recent coastal bioclastic sediments from the Cadiz Bay (SW Spain). These deposits are carbonated shelly intercalations interbedded in coastal sands. They are lying to different heights above the present-day sea level. Their 14C ages represent a time interval from 200 years (yr) BC to 850 yr AD, which includes the Roman Warm Period and the start of the Medieval Warm Period. Sedimentary, mineralogical, chemical, and isotopic (δ18O) analyses were used to determine responses of the coastal depositional environments to the environmental changes and to the action of high-energy oceanic events. Sedimentologic analysis of these shelly beds shows depositional features typical of high-energy directional flows caused by great waves from storms or tsunamis, which would also explain the origin and the topographic position of these shelly accumulations. The δ18O values obtained suggest that in this North Atlantic area, the seawater temperature fluctuations were relatively small, with an amplitude similar to the present-day seasonal temperature fluctuations of the Mediterranean Sea. This fact may be attributable both to a middle-low latitude of the study zone and mix of water masses from the Atlantic and Mediterranean currents, which could moderate the effects caused by the climate changes observable in Atlantic areas of higher latitude. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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language |
English Spanish |
topic |
recent climate changes eustatic movements oxygen isotopes Glycymeris nummaria Gulf of Cadiz Spain Geology QE1-996.5 |
spellingShingle |
recent climate changes eustatic movements oxygen isotopes Glycymeris nummaria Gulf of Cadiz Spain Geology QE1-996.5 José Manuel Gutiérrez-Mas Ricardo Alvarez Alonso Ángel Sánchez Bellón Sedimentary evidences of historical climate and sea level changes in the coast from Cadiz Bay (SW Spain), and their interaction with regional very high-energy oceanic events |
topic_facet |
recent climate changes eustatic movements oxygen isotopes Glycymeris nummaria Gulf of Cadiz Spain Geology QE1-996.5 |
description |
The study attempts to establish the depositional history of recent coastal bioclastic sediments from the Cadiz Bay (SW Spain). These deposits are carbonated shelly intercalations interbedded in coastal sands. They are lying to different heights above the present-day sea level. Their 14C ages represent a time interval from 200 years (yr) BC to 850 yr AD, which includes the Roman Warm Period and the start of the Medieval Warm Period. Sedimentary, mineralogical, chemical, and isotopic (δ18O) analyses were used to determine responses of the coastal depositional environments to the environmental changes and to the action of high-energy oceanic events. Sedimentologic analysis of these shelly beds shows depositional features typical of high-energy directional flows caused by great waves from storms or tsunamis, which would also explain the origin and the topographic position of these shelly accumulations. The δ18O values obtained suggest that in this North Atlantic area, the seawater temperature fluctuations were relatively small, with an amplitude similar to the present-day seasonal temperature fluctuations of the Mediterranean Sea. This fact may be attributable both to a middle-low latitude of the study zone and mix of water masses from the Atlantic and Mediterranean currents, which could moderate the effects caused by the climate changes observable in Atlantic areas of higher latitude. |
format |
Article in Journal/Newspaper |
author |
José Manuel Gutiérrez-Mas Ricardo Alvarez Alonso Ángel Sánchez Bellón |
author_facet |
José Manuel Gutiérrez-Mas Ricardo Alvarez Alonso Ángel Sánchez Bellón |
author_sort |
José Manuel Gutiérrez-Mas |
title |
Sedimentary evidences of historical climate and sea level changes in the coast from Cadiz Bay (SW Spain), and their interaction with regional very high-energy oceanic events |
title_short |
Sedimentary evidences of historical climate and sea level changes in the coast from Cadiz Bay (SW Spain), and their interaction with regional very high-energy oceanic events |
title_full |
Sedimentary evidences of historical climate and sea level changes in the coast from Cadiz Bay (SW Spain), and their interaction with regional very high-energy oceanic events |
title_fullStr |
Sedimentary evidences of historical climate and sea level changes in the coast from Cadiz Bay (SW Spain), and their interaction with regional very high-energy oceanic events |
title_full_unstemmed |
Sedimentary evidences of historical climate and sea level changes in the coast from Cadiz Bay (SW Spain), and their interaction with regional very high-energy oceanic events |
title_sort |
sedimentary evidences of historical climate and sea level changes in the coast from cadiz bay (sw spain), and their interaction with regional very high-energy oceanic events |
publisher |
Servicio Geológico Colombiano |
publishDate |
2024 |
url |
https://doi.org/10.32685/0120-1425/bol.geol.51.1.2024.718 https://doaj.org/article/e9d51b0e247649c6990bf9d21fc1c1e1 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Boletín Geológico, Vol 51, Iss 1 (2024) |
op_relation |
https://doaj.org/toc/0120-1425 https://doaj.org/toc/2711-1318 doi:10.32685/0120-1425/bol.geol.51.1.2024.718 0120-1425 2711-1318 https://doaj.org/article/e9d51b0e247649c6990bf9d21fc1c1e1 |
op_doi |
https://doi.org/10.32685/0120-1425/bol.geol.51.1.2024.718 |
_version_ |
1810464037785305088 |