GEOMORPHOLOGICAL FEATURES AND SUBSURFACE GEOLOGY OF THE LOWER MEKONG PLAIN AROUND PHNOM PENH CITY, CAMBODIA (SOUTHEAST ASIA)

Revista Geográfica Acadêmica. 2008;2(1):20-32

 

Journal Homepage

Journal Title: Revista Geográfica Acadêmica

ISSN: 1678-7226 (Online)

Publisher: Universidade Federal de Goiás

Society/Institution: Universidade Federal de Goiás, Instituto de Estudos Sócio-Ambientais, Laboratório de Geologia e Geografia Física

LCC Subject Category: Geography. Anthropology. Recreation: Geography (General)

Country of publisher: Brazil

Language of fulltext: Portuguese, English

Full-text formats available: PDF

 

AUTHORS

Sumiko Kubo

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 5 weeks

 

Abstract | Full Text

The geomorphological features of the Lower Mekong Plain and their relationships with floods, as well asthe subsurface geology and the major depositional processes in the area, are discussed. From theinterpretation of aerial photos and field reconnaissance, the Lower Mekong Plain in Cambodia ischaracterized as a floodplain with natural levees and back marshes. These geomorphological featuresinfluence the extent of the extensive inundation that occurs during every rainy (wet) season. An extremeflood in 2000 confirmed the close relationship between micro-landforms and the flooding. A preliminarystudy of bore-hole logs in the area of Phnom Penh was also carried out. Base rocks are shallower in thewestern part, whereas thick (>130 m) Quaternary deposits occur in the eastern part, suggesting the presenceof a structural basin.