Core sample
Videos
A core sample is a cylindrical section of a naturally occurring substance. Most core samples are obtained by drilling with special drills into the substance, such as sediment or rock, with a hollow st
Rock core samples, the product of a diamond rig. A pied butcherbird perches nearby.
Granitic rock core from Stillwater igneous complex, Montana (from a spoil pile).
Core sampling by hand in a bog in Estonia (2023)
Cut Bakken Core samples
Pied butcherbird
Videos
The pied butcherbird is a songbird native to Australia. Initially described by John Gould in 1837, it is a black-and-white bird 28 to 32 cm long with a long, hooked bill. Its head and throat are black
Core sample
…Rock core samples, the product of a diamond rig. A pied butcherbird perches nearby. A core sample is a cylindrical section of (usually) a naturally occurring substance. Most core samples are obtained by drilling with…
Pied Butcherbird Male 03
Painting by John Gould
Subsp. picatus at Slate Range (Gibson Desert)
Immature bird – City Botanic Gardens – Brisbane