[First Hit]

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BELT, JOHN Q., and GARY K. RICE
GeoFrontiers Corporation, Dallas, TX

Abstract: Application Of Statistical Previous HitQualityNext Hit Previous HitControlNext Hit Measures To Surface Geochemical Exploration Data

The most important aspect of near-surface, geochemical exploration data is the statistical Previous HitqualityNext Hit Previous HitcontrolNext Hit (SQC) measures used in sample collection and analytical data Previous HitprocessingNext Hit.

Sample Collection:

1) Contamination - Extraneous sources contaminate samples and bias geochemical data Previous HitqualityNext Hit. These sources and areas must be avoided. Data must be screened for contamination.
2) Sample Replicates - Replicate samples collected at the same time and location help determine data variability.
3) Base Stations - Dedicated base stations determine temporal data variability.

Analytical Data Previous HitProcessingNext Hit:

1) Instrument Calibration - Two primary forms of calibration are external standard (ES) and internal standard (IS). Sample type and volume analyzed determines instrument calibration parameters.
2) Previous HitQualityNext Hit Previous HitControlNext Hit Charts - Two important Previous HitqualityNext Hit Previous HitcontrolNext Hit charts are the X-bar and R charts. Both charts monitor analytical equipment parameters insuring reproducible data over time.
3) Cross Plots and Correlation Coefficients - Cross plots and correlation coefficients compare two variables. Contamination, multiple sources, and degradation change this linear relationship.

The explorationist must be thoroughly familiar with these statistical Previous HitqualityNext Hit Previous HitcontrolNext Hit measures. Its is paramount to implement SQC measures during Sample collection and data Previous HitprocessingNext Hit. Poor Previous HitqualityNext Hit geochemical data provides no beneficial information in evaluating your exploration prospect. Previous HitQualityTop is the single most important factor in selecting a geochemical exploration tool.

AAPG Search and Discovery Article #90928©1999 AAPG Annual Convention, San Antonio, Texas