The Holocene sedimentation rates in the Lower Segura Basin (eastern Betic Cordillera, Spain) : eustatic implications

Citation
Jm. Soria et al., The Holocene sedimentation rates in the Lower Segura Basin (eastern Betic Cordillera, Spain) : eustatic implications, B SOC GEOL, 170(3), 1999, pp. 349-354
Citations number
10
Categorie Soggetti
Earth Sciences
Journal title
BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE
ISSN journal
00379409 → ACNP
Volume
170
Issue
3
Year of publication
1999
Pages
349 - 354
Database
ISI
SICI code
0037-9409(1999)170:3<349:THSRIT>2.0.ZU;2-J
Abstract
By studying 36 boreholes in the Lower Segura Basin (eastern Betic Cordiller a) we identified a stratigraphic unconformity at an average depth of 30 m. The most recent sedimentary unit filling the basin, consisting of fluvial f lood plain and coastal deposits, lies on this unconformity. The age of the unit was established on the basis of 30 absolute C-14 datings, which indica te that the uppermost 20 m were deposited from 8,000 yr B.P. to the present . The estimated sedimentation rates range from 3.7 mm/yr for the period 8,0 00-6.000 yr B.P. and 1.9 mm/yr between 6,000 yr B.P. and the present. The f irst interval represents an episode of high sedimentary aggradation, interp reted in a context of rapid sea-level rise, whereas the second is character istic of relatively low aggradation related to sea-level stabilization.