The Mudcat Café TM
Thread #59418 Message #1504297
Posted By: GUEST,JennyO
19-Jun-05 - 10:40 AM
Thread Name: BS: The Mother of all BS threads
Subject: RE: BS: The Mother of all BS threads
an unwarranted and unnecessary intrusion
Maybe one of these?
An igneous intrusion (also called a laccolith or a plutonic formation) is a formation in which magma (molten rock) is trapped beneath the surface of the Earth and pushes the rock located above it into a dome shape. It has a flat base and a convex upper surface. The magma cools and solidifies, and eventually, it is exposed (as the fractured sedimentary rock above it erodes away).
"Who you calling an igneous intrusion?"