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What type of rocks are banded or non banded?
Well, friend, banded rocks are often made up of layers of different materials, like sedimentary rocks such as sandstone or shale. Non-banded rocks, on the other hand, can include igneous rocks like granite or basalt, which are formed from cooled magma without distinct layers. Both types of rocks have their own unique beauty and story to tell in the great tapestry of the Earth.
What term describes an erosional surface bounded above by flat-lying sedimentary rocks and below by igneous or metamorphic rocks?
nonconformity
What does it mean if the rock layers are foliated?
The foliation is caused by the massive force of pressure and high temperature which results from mountain building processes caused by plate collisions. The heat and pressure combine to realign the existing minerals from a random orientation to one of parallel orientation, thus creating the visible lines or platy cleavages found in foliated metamorphic rocks. The lines of foliation are created perpendicularly to the force being applied.
Where in the Bronx can one find igneous sedimentary and metamorphic rocks?
If you can find an open piece of dirt, you can find rocks. All rocks fallinto those three categories. If you find a flat, smooth piece of rock, you might have found slate, a metamorphic rock. However, most metamorphic rocks are hard to find in the New York area, as there are few plate tectonics in these parts. Anyhow, look for rocks and use this rock key: http://www.rockhounds.com/rockshop/rockkey/index.html
What rock are mountains made from?
It is made of old, flat lying sedimentary rocks (it is the flat area of a large open syncline fold), which define the flat table top and the feature was formed as a remnant as the continents split either side of Africa and drifted away. In other words the other bits of the geological formation are now on other continents.
Flat or wavy parallel bands of minerals within rocks?
foliation
What is an arrangement of minerals in flat or wavy parallel bands?
This arrangement is known as foliation, commonly seen in metamorphic rocks where minerals align in layers due to pressure and temperature changes during their formation.
What describes the thin flat layering in most metamorphic rocks?
The thin flat layering found in most metamorphic rocks is called foliation
What term is used to describe metamorphic rocks with a banded texture?
The two main groups of metamorphic rocks are foliated and non-foliated. Foliated metamorphic rocks show layering and parallel alignment of flat mineral crystals (ex. micas). The "banded texture in metamorphic rocks" is one of the specific kinds of foliated textures. It is referred to as gneissic banding. Essentially, this texture displays alternating layers of light and dark minerals. These rocks are called gneiss- the light bands form from quartz and feldspars, while the dark ones form from ferromagnesian minerals.
What is the arrangement of minerals in a parallel or wavy or flat bands?
foliation
What is an arrangement of minerals flat or wavy parallel bands?
Foliation.. of course!
What describes the thin flat layering found in most metamorphic rocks?
The thin flat layering found in most metamorphic rocks is called foliation, and it is formed due to the alignment of mineral grains or the presence of alternating layers of different mineral compositions. Foliation is a common feature in rocks that have undergone high pressure and temperature conditions, leading to the development of a layered structure.
What is an arrangement of minerals in flat wavy or parellel bands?
An arrangement of minerals in flat, wavy, or parallel bands is known as a banded structure or banding. This structure is commonly seen in rocks like gneiss and schist, where different minerals align in layers or bands due to geological processes like metamorphism. The distinct bands are often a result of alternating composition or texture variations within the rock.
What type of rocks are banded or non banded?
Well, friend, banded rocks are often made up of layers of different materials, like sedimentary rocks such as sandstone or shale. Non-banded rocks, on the other hand, can include igneous rocks like granite or basalt, which are formed from cooled magma without distinct layers. Both types of rocks have their own unique beauty and story to tell in the great tapestry of the Earth.
What term describes an erosional surface bounded above by flat-lying sedimentary rocks and below by igneous or metamorphic rocks?
nonconformity
What is a rock with long flat mineral grains?
A rock with long flat mineral grains is likely to be schist. Schist is a metamorphic rock characterized by its foliated texture, with mineral grains aligned in a parallel fashion, giving it a distinct layered appearance.
What are rocks that have grains that lie in a pattern of flat layers or form swirls?
Rocks with grains that lie in flat layers are sedimentary rocks, which include sandstone and shale. Rocks with swirling patterns are often metamorphic rocks, such as gneiss or marble, which have undergone intense heat and pressure causing their minerals to align in distinct patterns.
