Igneous rock is considered "hard" rock by geologists due to its interlocking crystalline structure.
Basalt is a relatively heavy iron rich hard rock.
Metamorphic rock is generally hard, as it forms through the intense heat and pressure of metamorphism, which causes the minerals in the rock to recrystallize and align in a more compact and dense structure. This results in a rock that is usually more resistant to weathering and erosion compared to softer sedimentary rocks.
Generally speaking, when a geologist talks of "soft rocks" and "hard rocks" what he or she means is "sedimentary rocks" or "igneous and metamorphic rocks". Limestone is a sedimentary rock, and compared to most other rocks, is relatively soft. lol Different limestones have different hardnesses. Most "marbles" are actually hard limestones, because they have not experienced the high pressures and temperatures required for metamorphism.
Magnetite is considered to be a hard mineral, not a rock, because it has the ability to scratch glass and its hardness number is greater than 5.5 according to the Mohs scale.
No, granite is not a soft rock. It is a hard, durable rock that is commonly used in construction due to its strength and resistance to wear and tear.
There are types of igneous rocks that are hard (eg granite) and others that are soft (eg volcanic ash). There are types of metamorphic rocks that are hard (eg gneiss) and others that are soft (eg marble). Thus "hardness" is not a characteristic that can be used to distinguish between the two.
Igneous rock is hard. If the surrounding rock is softer it will erode more quickly. Sedimentary rocks in particular can be very soft.
Basalt is a relatively heavy iron rich hard rock.
Metamorphic rock is generally hard, as it forms through the intense heat and pressure of metamorphism, which causes the minerals in the rock to recrystallize and align in a more compact and dense structure. This results in a rock that is usually more resistant to weathering and erosion compared to softer sedimentary rocks.
Generally speaking, when a geologist talks of "soft rocks" and "hard rocks" what he or she means is "sedimentary rocks" or "igneous and metamorphic rocks". Limestone is a sedimentary rock, and compared to most other rocks, is relatively soft. lol Different limestones have different hardnesses. Most "marbles" are actually hard limestones, because they have not experienced the high pressures and temperatures required for metamorphism.
North Wales is mainly upland because of the hard rock wich is built up on top of ach other (this is called Igneous rock), this is because of the hard rock does not wear away as easy as the soft rock (which is normally Sedimantary).
Marble is a hard rock. it is a soft rock then the Taj Mahal situated in agra will have broken into peices.
Hard rock: GraniteSoft rock: Sandstone
The opposite of rock-hard would be soft or flexible.
"Treated wood can be soft or hard." But, generally what is bought from a lumberyard is soft.
It is a limestone, hard.
Calloused rock, or Subtraceaneal rock. Also, Ephyloceaeoulical-Pharchylogenic Carboniferincean Postulate Aggrevations is a fancy way of saying it.