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Geochemical mapping in Jamaica.

¹Centre for Nuclear Sciences, University of the West Indies Mona, Kingston 7, Jamaica.

Environmental Geochemistry and Health

|November 7, 2013

Summary

A geochemical database for Jamaica reveals high heavy metal levels in soils, linked to bauxite deposits. Bromine content suggests significant sea-spray influence on soil composition.

Area of Science:

Environmental Science
Geochemistry
Resource Management

Background:

Jamaica is developing a high-precision regional geochemical database.
This database supports diverse economic and environmental applications.

Purpose of the Study:

To establish a comprehensive geochemical baseline for Jamaica.
To identify relationships between soil geochemistry and various applications like pollution, resource management, and health.

Main Methods:

Instrumental neutron activation analysis (INAA) using a SLOWPOKE reactor.
Energy dispersive X-ray fluorescence (EDXRF).

Main Results:

Concentration ranges and means for 31 elements in Jamaican soils.

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High levels of many heavy metals correlate with bauxite occurrences.

Elevated bromine content likely due to sea-spray impact.

Conclusions:

The geochemical database provides a foundation for Jamaica's economic and environmental planning.
Soil geochemistry is influenced by both geological (bauxite) and atmospheric (sea-spray) factors.
Understanding soil composition is crucial for agriculture, health, and resource management.