What is it called when magma flows in a horizontal crack?

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What is it called when magma flows in a horizontal crack?

2007-12-04 08:13:55 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology

4 answers

That is a sill. If it cuts through the rock instead of between layers, then it is a dyke.

2007-12-04 08:29:52 · answer #1 · answered by Now and Then Comes a Thought 6 · 2⤊ 0⤋

If the flow doesen't cut across the rock strata, it is called a sill. If the flow causes a bulge in the strata, forming a dome-shaped structure, it's called a lacolith.

2007-12-04 10:22:35 · answer #2 · answered by AndrewG 7 · 1⤊ 0⤋

here is a site that describes the characteristics of different types of lava flows

http://library.thinkquest.org/17457/volcanoes/hazards.lavaflow.php

2007-12-04 08:25:40 · answer #3 · answered by ladylove 3 · 0⤊ 0⤋

A sill.

2007-12-04 10:23:16 · answer #4 · answered by Wayner 7 · 0⤊ 0⤋