Devils Tower How Did It Form - Web the tower of columnar basalt formed when molten rock intruded into overlying sedimentary rock and cooled. As the volcanic rocks cooled slowly, insulated by the. Web devils tower is an ancient volcanic plug, once covered by sediments. Web the simplest explanation is that devils tower is a stock—a small intrusive body formed by magma which cooled. Web geologists carpenter and russell studied devils tower in the late 19th century and came to the conclusion that it was formed. Devils tower is made of phonolite porphyry.
As the volcanic rocks cooled slowly, insulated by the. Web the simplest explanation is that devils tower is a stock—a small intrusive body formed by magma which cooled. Web geologists carpenter and russell studied devils tower in the late 19th century and came to the conclusion that it was formed. Web devils tower is an ancient volcanic plug, once covered by sediments. Web the tower of columnar basalt formed when molten rock intruded into overlying sedimentary rock and cooled. Devils tower is made of phonolite porphyry.