Question

Earth science definition of stoping, stocks, emplacing and laccoliths?

Answer 1

Stoping; a process by which magmas move upward in the earth by breaking off and engulfing blocks of overlying rocks.

Stocks; an igneous intrusion that has a surface exposure of less than 100 square kilometres (40 sq mi), differing from batholiths only in being smaller. A stock has a discordant relationship with the rocks that it intrudes. The term stock usually refers to individual, relatively small plutons, less than 20 km (12 mi) diameter, usually in relative isolation. Most stocks are probably the cupolas of hidden batholiths. Circular or elliptical stocks may have been vents feeding former volcanoes.

Emplacing; the intrusion of igneous rocks into a particular position.

Laccoliths; a sheet intrusion (or concordant pluton) that has been injected between two layers of sedimentary rock. The pressure of the magma is high enough that the overlying strata are forced upward, giving the laccolith a dome or mushroom-like form with a generally planar base.

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Answer 2

Stoping; a procedure by which magmas move upward in the earth by severing and immersing squares of overlying rocks.  

Answer:

Stocks, a molten interruption that has a surface introduction of under 100 square kilometers , varying from batholiths just in being littler. A stock has a dissonant association with the stones that it encroaches.

Explanation:

The term stock as a rule alludes to individual, generally little plutons, under 20 km distance across, normally in relative disconnection. Most stocks are presumably the vaults of shrouded batholiths. Round or curved stocks may have been vents nourishing previous volcanoes.  

Emplacing; the interruption of volcanic rocks into a specific position.  

Laccoliths; a sheet interruption that has been infused between two layers of sedimentary shake. The weight of the magma is sufficiently high that the overlying strata are constrained upward, giving the laccolith a vault or mushroom-like shape with a by and large planar base.