What is geochemical baseline?
The term geochemical baseline—officially presented in 1993 under the International Geological Correlation Program as the Global Geochemical Baselines—refers to the natural variation in the concentration of an element in the surface environment, at a determined place and time.
What is geochemical map?
INTRODUCTION. Systematic geochemical mapping is the best available method to document changes in the levels of chemical elements in materials occurring at or below the Earth’s surface, such as rock, soil, floodplain or overbank1 sediment, stream sediment, regolith2, stream water, ground water and vegetation.
What is background value in geochemistry?
The background values provide a guide to ascertain the presence of anthropogenic effects that could lead to hazardous or beneficial consequences. In environmental geochemistry and health, the background is considered as the natural concentration in environmental material devoid of human influences.
What is a geochemical anomaly?
A concentration of one or more elements in rock, soil, sediment, vegetation, or water that is markedly higher or lower than background. The term may also be applied to hydrocarbon concentrations in soils.
What are background values?
Background values are determined by the composition of the underlying rock as well as the weathering processes prevalent in the area and are considered as the normal values of potentially polluting substances present in natural soils without human influence (Matschullat, Ottenstein, & Reimann, 2000. (2000).
What is geochemical method?
Geochemical exploration is any method of mineral or petroleum exploration that utilizes systematic measurements of one or more chemical properties of a naturally occurring material. The materials analyzed most commonly are rock, soil, stream and lake sediment, natural waters, vegetation and soil air.
What tools do mineralogists use?
Thus far we have considered only three tools useful to mineralogy: the reflecting goniometer, the petrographic microscope, and x-ray apparatus.
What are the geochemical prospecting method?
Geochemical prospecting for minerals includes any method of mineral exploration based on systematic measurement of the chemical properties of a naturally occurring material. surficial environment, determines the characteristics of the geochemical anomalies it can form.