Radiocarbon Ages of the Sub-surface Sediments in the Krishna Delta, India, and Their Geomorphological Implications.

• SADAKATA Noboru

  Department of Geography, Hokkaido University of Education

• RAO Kakani NAGESWARA

  Department of Geo-Engineering, Andhra University

Bibliographic Information

Other Title

• インド東海岸クリシュナデルタの表層堆積物の¹⁴C年代値とその地形学的意義
• Radiocarbon Ages of the Sub-surface Sed
• Radiocarbon ages of the subsurface sediments in the Krishna delta and their geomorphological significance

Abstract

The geomorphological study and the radiocarbon datings of the sub-surface sediments in the Krishna delta, indicate that the strandline around 2, 200 years ago was located at more than 40km inland from the present river mouth, and the delta tront has prograded more than 5km in the last 250 years. These facts differ somewhat from the previous view on the formation of the alluvial plain in the east coast of India that has been thought to be closely related to sea level oscillations since the Holocene maximum transgression. The rapid progradation of the delta front may be caused by human impact in the upper reaches of the Krishna river, and more detailed data are required to confirm this hypotheses.

Journal

• Quarterly Journal of Geography

  Quarterly Journal of Geography 49 (3), 163-170, 1997

  The Tohoku Geographical Association

Keywords

• the Krishna delta
• former strandline
• beach ridges
• delta front progradation
• human impact

Details

• CRID: 1390282679440533120
• NII Article ID: 10002695728
• NII Book ID: AN10379267
• DOI: 10.5190/tga.49.163
• ISSN: 18841252
• ISSN: 09167889
• NDL BIB ID: 4281969
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4281969
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed