+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Sedimentary facies changes recorded in the Plio-Pleistocene Kathmandu Basin Group in the southern part of the Kathmandu Valley, Nepal



Sedimentary facies changes recorded in the Plio-Pleistocene Kathmandu Basin Group in the southern part of the Kathmandu Valley, Nepal



Journal of Nepal Geological Society 25: 33-42



Sedimentological study has revealed vertical and lateral sedimentary facies changes of the Plio-Pleistocene Kathmandu Basin Group in the southern part of the Kathmandu Valley, Nepal. The field observation and analyses of XRD, carbon content, C/N ratio and diatom fossils indicate that depositional environments of muddy sediments in this area can be classified into four categories: i) open lacustrine, ii) shallow lacustrine, iii) swamp-shallow lacustrine, and iv) environment strongly affected by fluvial system. Distributions of sedimentary facies in Lukundol, located in the southern margin of the Kathmandu Basin, show that fluvial facies dominant sequence in the Tarebhir Formation changed to a marginal lacustrine facies in the Lukundol Formation at 2.8 Ma, and a fluvial facies in the Itaiti Formation developed at 1 Ma following the deposition of the Lukundol Formation. In the area 5 km north of Lukundol, an open lacustrine facies in the Kalimati Formation dominated during the deposition of the Lukundol and Itaiti formations. The relation between the vertical sedimentary facies changes and palaeoclimate estimated from clay mineral crystallinity indicates: (1) the termination of fluvial facies dominant sequence at 2.8 Ma corresponds to the time where a wet climate turned to a drier climate, (2) fluvial environments developed under the wet climate and swamp-shallow lacustrine environments expanded under the dry climate during the deposition of the Lukundol Formation.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 019970258

Download citation: RISBibTeXText


Related references

Stratigraphic division and sedimentary facies of the Kathmandu Basin Group, central Nepal. Journal of Nepal Geological Society 25: 19-32, 2001

Magnetostratigraphy of Plio-Pleistocene lacustrine deposits in the Kathmandu Valley, central Nepal. Unknown, 1988

Preliminary study of fossil freshwater molluscs from the Plio-Pleistocene Kathmandu Basin sediments, central Nepal. Journal of Nepal Geological Society 25: 81-88, 2001

Small-amplitude lake-level fluctuations recorded in aggrading deltaic deposits of the upper Pleistocene Thimi and Gokarna formations, Kathmandu Valley, Nepal. Journal of Nepal Geological Society 25: 43-51, 2001

Changes in mineral composition and depositional environments recorded in the present and past basin-fill sediments of the Kathmandu Valley, central Nepal. Himalayan Journal of Sciences 2(4): 222-223, 2008

Mineral composition changes recorded in the sediments from a 284-m-long drill-well in central part of the Kathmandu Basin, Nepal. Journal of Nepal Geological Society 25: 63-69, 2001

Stratigraphy and depositional environments of basin-fill sediments in southern Kathmandu Valley, Central Nepal. Bulletin of the Department of Geology 11: 61-70, 1970

Stratigraphy and depositional environments of basin-fill sediments in southern Kathmandu Valley, Central Nepal. Bulletin Of The Department Of Geology, Tribuvan University: 61-70, 2008

Tectonic evolution and stress conditions in the development of the Kathmandu Nappe and Kathmandu Basin, Nepal Himalaya. Journal of Himalayan Geology 10: 304-325, 1980

Kathmandu (Kathmandu Valley, Nepal; 19752010). Journal of Cultural Geography 27(3): 367-378, 2010

Pleistocene geology, paleontology and paleoenvironment of the Kathmandu Valley, Nepal. Abstracts - International Conference on the Palaeoenvironment of East Asia from the Mid-Tertiary 2: 66, 1987

Paleoclimatic changes during the last 2.5 Ma recorded in the Kathmandu Basin, central Nepal Himalayas. Dixue Qianyuan = Earth Science Frontiers 7, Suppl, 2000

Paleoclimatic changes during the last 2.5myr recorded in the Kathmandu Basin, central Nepal Himalayas. Journal of Asian Earth Sciences 20(3): 255-266, 2002

Late Pleistocene pollen assemblages from the Thimi Formation, Kathmandu Valley, Nepal. Island Arc 14(4): 328-337, 2005

Facies association and depositional environment of fan-delta sequence in southwest Kathmandu Basin, Nepal. Bulletin of the Department of Geology 12: 1-16, 1970