4 research outputs found
Clay mineralogical composition and its influence on some physico-chemical properties of selected soils of Coast region, Tanzania
ArticleA mineralogical study was carried out in
Coast Region, Tanzania, on soils developed
from different parent materials. These
materials are; unconsolidated sands and
gravels of Neogene age, Grey-green marls
of Cretaceous age, Calcareous silt stone and
sandstone of Jurassic age and migmatitic
gneisses of Precambrian age (Usagaran system).
The soil clay fractions exhibit pertinent
differences in mineralogical composition.
Soils developed from migmatitic
gneisses are predominantly kaolinitic with
accessory amount of goethite. Kaolinite in
these soils is pedogenic and is formed from
feldspars and mica. Soils formed from calcareous
siltstone and sandstone have
mixed clay mineralogy including smectite,
vermiculite and illite. Both smectite and
vermiculite in these soils are pedogenic
and are formed from mica, while illite is
inherited from the parent materials. Soils
developed from the grey-green marls are
dominated by smectite and have some
accessory amounts of kaolinite and illite;
while those developed from tertiary sediments
are characterized by mixed clay
mineralogy including smectite, kaolinite
and traces of gibbsite. The pedogenic environment
suggests that both kaolinite and
smectite in these soils are not formed insitu
but are inherited from transported parent
materials. The clay mineralogy is clearly
reflected on the cation exchange capacity,
moisture retention characteristics and carrying
capacity (n value) of these soil
Clay mineralogical composition and its influence on some physico-chemical properties of selected soils of Coast region, Tanzania
ArticleA mineralogical study was carried out in
Coast Region, Tanzania, on soils developed
from different parent materials. These
materials are; unconsolidated sands and
gravels of Neogene age, Grey-green marls
of Cretaceous age, Calcareous silt stone and
sandstone of Jurassic age and migmatitic
gneisses of Precambrian age (Usagaran system).
The soil clay fractions exhibit pertinent
differences in mineralogical composition.
Soils developed from migmatitic
gneisses are predominantly kaolinitic with
accessory amount of goethite. Kaolinite in
these soils is pedogenic and is formed from
feldspars and mica. Soils formed from calcareous
siltstone and sandstone have
mixed clay mineralogy including smectite,
vermiculite and illite. Both smectite and
vermiculite in these soils are pedogenic
and are formed from mica, while illite is
inherited from the parent materials. Soils
developed from the grey-green marls are
dominated by smectite and have some
accessory amounts of kaolinite and illite;
while those developed from tertiary sediments
are characterized by mixed clay
mineralogy including smectite, kaolinite
and traces of gibbsite. The pedogenic environment
suggests that both kaolinite and
smectite in these soils are not formed insitu
but are inherited from transported parent
materials. The clay mineralogy is clearly
reflected on the cation exchange capacity,
moisture retention characteristics and carrying
capacity (n value) of these soil
Abstracts of Tanzania Health Summit 2020
This book contains the abstracts of the papers/posters presented at the Tanzania Health Summit 2020 (THS-2020) Organized by the Ministry of Health Community Development, Gender, Elderly and Children (MoHCDGEC); President Office Regional Administration and Local Government (PORALG); Ministry of Health, Social Welfare, Elderly, Gender, and Children Zanzibar; Association of Private Health Facilities in Tanzania (APHFTA); National Muslim Council of Tanzania (BAKWATA); Christian Social Services Commission (CSSC); & Tindwa Medical and Health Services (TMHS) held on 25–26 November 2020. The Tanzania Health Summit is the annual largest healthcare platform in Tanzania that attracts more than 1000 participants, national and international experts, from policymakers, health researchers, public health professionals, health insurers, medical doctors, nurses, pharmacists, private health investors, supply chain experts, and the civil society. During the three-day summit, stakeholders and decision-makers from every field in healthcare work together to find solutions to the country’s and regional health challenges and set the agenda for a healthier future.
Summit Title: Tanzania Health SummitSummit Acronym: THS-2020Summit Date: 25–26 November 2020Summit Location: St. Gasper Hotel and Conference Centre in Dodoma, TanzaniaSummit Organizers: Ministry of Health Community Development, Gender, Elderly and Children (MoHCDGEC); President Office Regional Administration and Local Government (PORALG); Ministry of Health, Social Welfare, Elderly, Gender and Children Zanzibar; Association of Private Health Facilities in Tanzania (APHFTA); National Muslim Council of Tanzania (BAKWATA); Christian Social Services Commission (CSSC); & Tindwa Medical and Health Services (TMHS)