The geological condition of Phu Hin Rong Kla National Park is steep in the south east and west. The rock in Phu Hin Rong Kla is metamorphic rock and sedimentary rock of Korat group which contain Phu Phan formation (Kpp), Phra Wihan formation (Jpw), Sao Khua formation (Jsk) and Khok Kruat formation (Kkk). In the past, Geologist presumed that rock caused by the accumulation of silt, call braided stream, for Cretaceous period (120-100 million years ago) until Tertiary period (55 million years ago). The soil caused by decomposition of rock which include sandstone, shale, lime stone, quartzite and phyllite. Most of soil type in Phu Hin Rong Kla National Park is slope complex; the others are Hang Chat series and Satuk series. (Soil and forest resources part National Resource Conservation Office, 1997) [1]
References
- , The management model scheme of Phu Hin Rong Kla National Park, Phetchabun and Loei Provinces , vol. 1. Bangkok: National Resource Conservation Office, 1997.