Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia

Andisols from elevational transects at Mt. Marapi and Mt. Pasaman in West Sumatra, Indonesia were studied to characterize their physico-chemical and mineralogical properties. These soils are developed under audic, isothermic and isohyperthermic climatic regime. They have dark epipedons with high...

Full description

Bibliographic Details
Main Author: Fiantis, Dian
Format: Thesis
Language:English
English
Published: 2000
Subjects:
Online Access:http://psasir.upm.edu.my/id/eprint/10513/1/FP_2000_8.pdf
_version_ 1825944786916343808
author Fiantis, Dian
author_facet Fiantis, Dian
author_sort Fiantis, Dian
collection UPM
description Andisols from elevational transects at Mt. Marapi and Mt. Pasaman in West Sumatra, Indonesia were studied to characterize their physico-chemical and mineralogical properties. These soils are developed under audic, isothermic and isohyperthermic climatic regime. They have dark epipedons with high contents of organic carbon and low bulk densities « 0.9 Mg m-3). All the nine pedons studied were found to meet the physical and chemical criteria of andic materials. Major minerals in the sand fraction are quartz, plagioclase, hornblende, augite, hypersthene, olivine and volcanic glass. Some of the volcanic glass is coated with amorphous materials. Allophane, cristobalite, feldspars and halloysite are maj or minerals in the clay fraction. Some soils contain imogolite. Halloysite exists as tubular crystals. Gibbsite is found in Mt. Pasaman soils, while opaline silica is present in the surface horizons of Mt. Marapi soils.
first_indexed 2024-03-06T07:21:23Z
format Thesis
id upm.eprints-10513
institution Universiti Putra Malaysia
language English
English
last_indexed 2024-04-09T03:50:11Z
publishDate 2000
record_format dspace
spelling upm.eprints-105132024-04-03T05:04:44Z http://psasir.upm.edu.my/id/eprint/10513/ Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia Fiantis, Dian Andisols from elevational transects at Mt. Marapi and Mt. Pasaman in West Sumatra, Indonesia were studied to characterize their physico-chemical and mineralogical properties. These soils are developed under audic, isothermic and isohyperthermic climatic regime. They have dark epipedons with high contents of organic carbon and low bulk densities « 0.9 Mg m-3). All the nine pedons studied were found to meet the physical and chemical criteria of andic materials. Major minerals in the sand fraction are quartz, plagioclase, hornblende, augite, hypersthene, olivine and volcanic glass. Some of the volcanic glass is coated with amorphous materials. Allophane, cristobalite, feldspars and halloysite are maj or minerals in the clay fraction. Some soils contain imogolite. Halloysite exists as tubular crystals. Gibbsite is found in Mt. Pasaman soils, while opaline silica is present in the surface horizons of Mt. Marapi soils. 2000-06 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/10513/1/FP_2000_8.pdf Fiantis, Dian (2000) Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia. Doctoral thesis, Universiti Putra Malaysia. Colloids English
spellingShingle Colloids
Fiantis, Dian
Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia
title Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia
title_full Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia
title_fullStr Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia
title_full_unstemmed Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia
title_short Colloid-Surface Characteristics and Amelioration Problems of Some Volcanic Soils in West Sumatra, Indonesia
title_sort colloid surface characteristics and amelioration problems of some volcanic soils in west sumatra indonesia
topic Colloids
url http://psasir.upm.edu.my/id/eprint/10513/1/FP_2000_8.pdf
work_keys_str_mv AT fiantisdian colloidsurfacecharacteristicsandameliorationproblemsofsomevolcanicsoilsinwestsumatraindonesia