[1] We studied soils on high-purity limestones of Quaternary age on the western Atlantic Ocean islands of Barbados, the Florida Keys, and the Bahamas. Potential soil parent materials in this region, external to the carbonate substrate, include volcanic ash from the island of St. Vincent (near Barbados), volcanic ash from the islands of Dominica and St. Lucia (somewhat farther from Barbados), th...

ABSTRACT- Paddy soils make up the largest anthropogenic wetlands on earth. Present study was performed to investigate and compare soil formation of paddy soils with long-term rice cultivation history with non-paddy soils and study the effect of waterlogging on soil pedogenesis. Soil samples were taken from paddy and non-paddy soils derived from the same calcareous parent materials. Some pedogen...

Clay-rich red soil profiles developed in different lithologies Indonesia were assessed using geochemical evidence, the migration coefficient and elemental ratios. Our study aimed to ascertain source of materials investigate behavior tropical soils. The results indicate carbonate derived from situ weathering, while basalt profiles, even though having close affinity their bedrock, also showed con...

Considering the eastern part of Hunan Province as research area, 34 sampling sites were set up, 198 samples collected from representative paddy soil, distribution characteristics antimony (Sb) studied. The results showed that: (1) content Sb on surface soil ranging 0.07 to 11.00 mg/kg and geometric mean was 1.56 mg/kg. (2) contents in different areas shown Yueyang > Changsha Zhuzhou Xian...

The formation and stabilization of soil aggregates play a key role in soil functions. To date, few studies have been performed on the variation of soil aggregation with increasing soil weathering degree. Here, soil aggregation and its influencing factors along the weathering gradient were investigated. Six typical zonal soils (derived from similar parent materials) were sampled from temperate t...

Vigilant care aims at reducing adolescent risk behaviors while matching parental involvement to the level of alarm signs. This study examined the effect of parent training in vigilant care and technological feedback on driving risk of novice male drivers. A sample of 217 Israeli families was divided into four conditions: a) no-feedback, b) individual feedback, c) family feedback, and d) family ...

background and objectives : zeolite is a group of anionic hydrated aluminosilicates with a tridimensional structure which has great implications in remediation of water, sediment and soil resources. the present research aims at physicochemical investigation, clay mineralogy and micromorphology of soils along rafsanjan-sarcheshmeh lithotoposequence, southeastern iran. materials and methods: the ...