Science Quiz / 'L' in Geology

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Can you name the answers to these Geology questions where all of the answers begin with 'L'?

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A soft, brownish, low-grade coal showing traces of plant structure (#2 above)
The rigid outer shell of the earth which includes the crust and a portion of the upper mantle
The movement of rock, soil, volcanic ash or other material, downslope under the influence of gravity
The process by which sediments become rocks
A mudflow composed of water and volcanic ash
Molten rock that has erupted onto Earth's surface
An iridescent blue feldspar mineral and gemstone named for a province of Canada (#1 above)
Refers to the depositional environment or habitat found in lakes
The total amount of sediment being carried by a stream or glacier (suspended, dissolved, and along bed)
Author of Principles of Geology; made major contributions to stratigraphy, earthquakes, and volcanoes
The removal of soluble constituents from a rock or soil by moving groundwater or hydrothermal fluids
Deep blue semi-precious stone with white calcite and gold pyrite markings (#4 above)
Fluoride poisoning and famine from this 1783-84 eruption killed 50% of Iceland's livestock and 20% of its people
A sedimentary rock consisting of at least 50% calcium carbonate by mass
The manner in which light reflects from the surface of a mineral (e.g., metallic, vitreous, silky, dull)
A rich accumulation of minerals in solid rock, often in a vein
Small volcanic rock materials (usually 2-64 mm in size) formed when magma is ejected by a volcano (#3 above)
An accumulation of rock debris along the sides of a glacier in contact with the valley walls
An igneous intrusion forced between two layered sedimentary rock units*
The giant ice sheet that covered most of Canada during the Pleistocene (2.59 to 0.01 million years ago)

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