Ramp calcarenite sheet depositional system as a recorder of sea-level fluctuations (Late Albian, Alsasua, Spain)
The Albian Aitziber calcarenites (Alsasua, Navarra) are analysed on the basis of their overall geometry, types of limiting boundaries, internal composition, facies, sedimentary structures and paleogeographical context. An «in situ» origin in shallow-water is inferred. The base of the calcarenite she...
| Authors: | , |
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| Format: | article |
| Publication Date: | 1997 |
| Country: | España |
| Institution: | Universidad de Huelva (UHU) |
| Repository: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Language: | English |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/10599 |
| Online Access: | http://hdl.handle.net/10272/10599 |
| Access Level: | Open access |
| Keyword: | Calcarenites Hardground Sea-level changes Hiatus Albian North Spain Calcarenitas Cambios del nivel del mar Hiato Albiense Norte de España |
| Summary: | The Albian Aitziber calcarenites (Alsasua, Navarra) are analysed on the basis of their overall geometry, types of limiting boundaries, internal composition, facies, sedimentary structures and paleogeographical context. An «in situ» origin in shallow-water is inferred. The base of the calcarenite sheet represents an abrupt shallowing relative to the underlying basin. The top of the calcarenite records a drowning, hardground and a hiatus between the upper Albian and the upper Cretaceous. Sea level fluctuations related to a local tectonic origin were responsible for the calcarenite inception and demise |
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