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The core recovered can be more than the drilled length(drill run): The extra core length recovered is from the previous drill run core loss; ...
YouTube-Dale Sims
Intro
A tray of core
Core measurement error
Measuring core recovery
Using a block as a measurement point
Core loss
PQ Core
Examples of drill core
Woodlawn drill hole
Conclusion
A quick introduction to how diamond drill core is logged and the types of data collected. The video is part of my online course FieldCraft ...
YouTube-GeologyUpSkill
How to log drill core
Importance of Core Logging
Marking the Core
Marking boundaries
Alteration & Minerals
Kinematic Analysis
Beta Angle
RQD Measurement
Calculating Specific Gravity