core samples

Extracted geological cylinders

Core samples are cylindrical sections extracted from the earth, ice, or other materials by drilling.

Geologists take core samples to study underground rock formations.

Ice cores reveal climate history through trapped air bubbles.

The technique provides a cross-sectional view of layered materials without disturbing surrounding areas: The core samples showed evidence of ancient volcanic activity.

extraction

drilling

Hole-making by rotation

  • boreholeDrilled underground passage
  • rigEquipment arrangement or vehicle
  • drill bitRotating hole-cutting attachment

coring · sediment · bedrock · cylinder · tube · depth · subsurface · offshore · onshore · drillship

stratigraphy

layers

Stacked levels or coatings

superposition · facies · deposition · chronology · correlation · sequence · horizons · bedding · cross-section · profile

dating

radiocarbon

Decaying carbon isotope

radiometric dating · half-life · uranium-lead · potassium-argon · luminescence · fossils · microfossils · diatoms · spores · tree rings

geology

sedimentology

Study of geological deposits

composition · grain size · porosity · permeability · crystalline · volcanic ash · tephra · mineral content · thin section · texture

research

laboratory

Facility for scientific investigation

methodology · publication · findings · data · preservation · storage · repository · archives · contamination · protocols

paleoclimate

glaciation

Ice sheet spreading process

snowfall · ice sheet · deuterium

Categories
Opposites
depth of investigation

core samplesskin samples

visual inspection

directness of evidence

core samplesremote sensing

Gathering data without contact

satellite imagery · aerial photography · spectral analysis · theoretical models · computer simulations

Family

core, sample, samples, sampling, cores, sampled, sampler, samplers, core sample

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