DOI: 10.1016/j.quascirev.2019.01.003
Scopus记录号: 2-s2.0-85059838099
论文题名: Beachrock as sea-level indicator – A case study at the coastline of Oman (Indian Ocean)
作者: Falkenroth M. ; Schneider B. ; Hoffmann G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2019
卷: 206 起始页码: 81
结束页码: 98
语种: 英语
英文关键词: Beachrock
; Coastal
; Geomorphology
; Marine terraces
; Middle east
; Quaternary
; Sea level changes
; Sedimentological facies analysis
Scopus关键词: Deposition
; Erosion
; Gages
; Geomorphology
; Glacial geology
; Landforms
; Structural geology
; Beachrock
; Coastal
; Facies analysis
; Marine terraces
; Middle East
; Quaternary
; Sealevel change
; Sea level
; beachrock
; coast
; coastal development
; coastal morphology
; depositional environment
; facies analysis
; future prospect
; Quaternary
; sea level change
; submarine terrace
; tectonics
; uplift
; Indian Ocean
; Middle East
; Oman
英文摘要: Future sea level changes are a threat to coastal communities worldwide. Therefore, reliable methods for the reconstruction of past relative sea-level variations are essential to make predictions of future developments. Beachrocks are a widely distributed indicator of Quaternary paleo-coastlines, with a high potential for preservation. Nevertheless, their use as sea-level indicator faces challenges in the determination of the exact elevation of beachrock formation with respect to paleo sea level. This information is crucial to the establishment of a sea-level index point. Our study area on the northeastern coastline of Oman shows a set of twelve marine terraces that reach a height of 500 m above mean sea level. While the upper terraces are erosional, the lowest three are depositional. On the erosional terraces beachrocks are the only sediment-cover that withstood erosion. On the depositional terraces however, beachrocks occur alongside other sediments, which can be fluvial, alluvial, or marine in origin. The coastal development of the area is of high interest as uplift and tectonic activity are ongoing. Fieldwork and petrographic methods on eight outcrops on three terrace levels led to the identification of eight lithofacies in six facies associations. We used facies analysis to improve the information on paleo sea level as derived by the sole use of geomorphological indicators. Here, we demonstrate that facies analysis (so far applied exclusively on sandy deposits) is applicable also to gravel-dominated systems. The results contribute to knowledge on local changes in the depositional environment and help to reconstruct uplift rates. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117385
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Falkenroth M.,Schneider B.,Hoffmann G.. Beachrock as sea-level indicator – A case study at the coastline of Oman (Indian Ocean)[J]. Quaternary Science Reviews,2019-01-01,206