DOI: 10.1016/j.gloplacha.2012.10.008
论文题名: Large-scale single incised valley from a small catchment basin on the western Adriatic margin (central Mediterranean Sea)
作者: Maselli V. ; Trincardi F.
刊名: Global and Planetary Change
ISSN: 0921-8372
出版年: 2013
卷: 100 起始页码: 245
结束页码: 262
语种: 英语
英文关键词: Adriatic Sea
; Incised valley
; Late Quaternary
; Sapropel
; Sea level
Scopus关键词: Accommodation space
; Adriatic
; Adriatic Sea
; Central Basin
; Central Mediterranean
; Chirp Sonar
; Climatic fluctuations
; Estuary environment
; High rate
; High resolution
; Hydrological cycles
; Incised valley
; Last Glacial Maximum
; Late Pleistocene-Holocene
; Late quaternary
; Mediterranean region
; Precipitation rates
; Prograding wedge
; Regional scale
; Riverine input
; Sapropel
; Sea level rise
; Sediment supply
; Shelf edges
; Short-interval
; Small catchment
; Western side
; Glacial geology
; Sea level
; Sonar
; Landforms
; catchment
; coastal morphology
; depositional environment
; erosion
; estuarine environment
; fill
; freshwater input
; Holocene
; hydrological cycle
; incised valley
; Last Glacial Maximum
; late glacial
; Mediterranean environment
; paleoceanography
; precipitation (climatology)
; sapropel
; sea level change
; sediment transport
; shelf break
; sonar
; Adriatic Sea
; Mediterranean Sea
英文摘要: The Manfredonia Incised Valley (MIV) is a huge erosional feature buried below the Apulian shelf, on the western side of the Adriatic margin. The incision extends more than 60. km eastward, from the Tavoliere Plain to the outer shelf, not reaching the shelf edge. High-resolution chirp sonar profiles allow reconstruction of the morphology of the incision and its correlation at regional scale. The MIV records a single episode of incision, induced by the last glacial-interglacial sea level fall that forced the rivers draining the Tavoliere Plain to advance basinward, reaching their maximum extent at the peak of the Last Glacial Maximum. The valley was filled during a relatively short interval of about 10,000. yr during the Late Pleistocene-Holocene sea level rise and almost leveled-off at the time of maximum marine ingression, possibly recording the short-term climatic fluctuations that occurred. The accommodation space generated by the lowstand incision was exploited during the following interval of sea level rise by very high rates of sediment supply that allowed the preservation of up to 45. m of valley fill. High-resolution chirp sonar profiles highlight stratal geometries that are consistent with a typical transgressive valley fill of an estuary environment, including bay-head deltas, central basin and distal barrier-island deposits, organized in a backstepping configuration. The highest complexity of the valley fill is reached in the shallowest and most proximal area, where a kilometric prograding wedge formed during a period dominated by riverine input, possibly connected to high precipitation rates. Based on the depth of the valley margins during this interval, the fill was likely isochronous with the formation of sapropel S1 in the Mediterranean region and may have recorded significant fluctuations within the hydrological cycle. © 2012 Elsevier B.V.. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84869884184&doi=10.1016%2fj.gloplacha.2012.10.008&partnerID=40&md5=e21c965dd1e8932d2f062ee15544c162
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11278
Appears in Collections: 全球变化的国际研究计划
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作者单位: ISMAR-CNR, Istituto di Scienze Marine, Via Gobetti 101, 40129 Bologna, Italy
Recommended Citation:
Maselli V.,Trincardi F.. Large-scale single incised valley from a small catchment basin on the western Adriatic margin (central Mediterranean Sea)[J]. Global and Planetary Change,2013-01-01,100.