Science Quiz / 'J' and 'K' in Geology

Random Science or Topography Quiz

QUIZ: Can you name the answers to these Geology questions where all of the answers begin with 'J' or 'K'?

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Also try: 'I' in Geology
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A planar fracture in rock along which there has been no displacement; common when rocks experience unloading
Ultra-mafic volcanic (extrusive) rock formed from magmas originating in the mantle
A landscape with caves, sinkholes, and other features formed by subsurface dissolution weathering and erosion
The current eruption at this volcano began in 1983, with lava flows often reaching the Pacific Ocean (#2 above)
A depression formed in glacial deposits when a buried block of ice melts; often filled with water (#3 above)
A soft blue metamorphic aluminum silicate mineral with perfect cleavage in two directions
An opaque variety of chalcedony known for interesting color patterns caused by impurities (#4 above)
Solid organic substances frequently found in shales that can yield gases and liquids when heated
A common clay mineral used as a whitener, antistick agent, and filler in things like toothpaste, paint, and ceramics
A small, low-elevation island formed by deposition of sediment atop a coral reef
A variety of diamond-bearing peridotite found in volcanic pipes; thought to have upper mantle origins
An area of land (often vegetated) surrounded by one or more younger lava flows (#1 above)
The 1883 explosion of this Indonesian volcano trigged a tsunami and killed 36,000 people
This Geologic Period saw the break-up of Pangaea and a proliferation of dinosaurs on land
Mounds, hummocks or ridges composed of stratified glacial sediments
A high-pressure clinopyroxene often prized as a green, durable gemstone

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