0
What else can I help you with?
What kind of rock is cradle mountain?
Cradle Mountain in Tasmania, Australia is primarily made up of dolerite rock, which is an igneous rock formed from the cooling of magma beneath the Earth's surface. Dolerite is known for its columnar jointing and rugged appearance, making it a prominent feature of the landscape in the Cradle Mountain area.
What is the difference between granite and dolerite?
Granite is a coarse-grained igneous rock composed mainly of quartz, feldspar, and mica. Dolerite, also known as diabase, is a medium- to coarse-grained intrusive igneous rock with a composition similar to basalt. One key difference is that granite forms at shallow depths within the Earth's crust, while dolerite forms at deeper levels.
Dolerite and gabbro are both igneous rocks Dolerite has crystals about 1 mm across and gabbro has crystals about 5 mm across What does this indicate about the formation of these rocks?
In comparison to the slower cooled magma that created the gabbro, the dolerite has formed closer to the surface. This means that there was less time for crystal growth before it cooled into rock, resulting in the difference in crystal size between the two.
Which is a coarse-grained igneous rock composed of mainly pyroxene plagioclase feldspar and olivine?
Gabbro.
Is eyjafjallajokull on a plate boundry?
Yes. It is believed to have erupted in 2010 twice because of the constructive margin. The plates were pulled apart by convection currents then because of this basalt lava seeps in to form a new crust beneath the sea and existing volcano. Much of the magma was intruded as dolerite dykes (thin sheets of igneous rock.) New lava and dykes then added extra crust at each side of the spreading ridge.
Is Dolerite Rock rough or smooth?
Dolerite is very rough.
What is dolerite made out of?
Igneous Rock :)
What is a dolerite dyke?
A dolerite dyke is a sheet-like igneous intrusion that cuts across the surrounding rock formations. It is composed mainly of medium-grained dolerite rock that solidified from magma that intruded into existing rock layers. Dolerite dikes are common in areas with volcanic activity or tectonic movement.
What metamorphic rock is formed by dolerite?
hornblende
How was the Dolerite Ball used in Ancient Egypt?
It wuz used for pounding into a rock. the dolerite ball was very. very hard.
What type of rocks are dolerite rocks?
Dolerite rocks are a type of igneous rocks (formed as a result of cooling of magma or lava). They are mafic (45-52% SiO2), and subvolcanic (formed within the earth's crust). Within this characterisation there is considerable variation. Please see the link.
Can light be seen through dolerite?
Light can pass through dolerite, although the amount of light that is transmitted will depend on the thickness and composition of the rock. Dolerite is a dark igneous rock that is typically fine-grained, so it may not be transparent but light can still penetrate it to some extent.
Is conglomerate intrusive or extrusive?
Neither. Conglomerate is a sedimentary rock. Intrusive and extrusive are descriptive terms used to classify igneous rocks.
How does dolerite hills form?
Dolerite hills form from the cooling and solidification of magma that intrudes into existing rock layers and then crystallizes underground. Over time, erosion removes the overlying sedimentary rocks, exposing the more resistant dolerite, which typically manifests as rugged hills or outcrops. The process involves geological uplift and weathering, which contribute to the formation of distinctive topographies in areas where dolerite is prevalent.
Variety of igneous rock containing a large amount of feldspar usually found in sillsand dykes?
dolerite
What tools did carvers use?
Stone carvers would use a special granite rock called ''Dolerite.''
What kind of rock is cradle mountain?
Cradle Mountain in Tasmania, Australia is primarily made up of dolerite rock, which is an igneous rock formed from the cooling of magma beneath the Earth's surface. Dolerite is known for its columnar jointing and rugged appearance, making it a prominent feature of the landscape in the Cradle Mountain area.
