crystals
Metamorphic rocks can have various types of minerals, such as quartz, feldspar, mica, and amphibole, which form grains within the rock. These grains can be elongated or flattened, depending on the degree of metamorphism the rock has undergone. The size, shape, and alignment of these grains provide valuable information about the rock's history and the conditions under which it formed.
It is likely a type of metamorphic rock, such as schist or gneiss, which form under high temperature and pressure conditions leading to the alignment of mineral grains into flat layers.
schist
A type of metamorphic rock similar to granite is gneiss. Gneiss is a foliated metamorphic rock that has a similar composition to granite but displays a banded texture due to the alignment of mineral grains during metamorphism.
crystals
Metamorphic rocks can have various types of minerals, such as quartz, feldspar, mica, and amphibole, which form grains within the rock. These grains can be elongated or flattened, depending on the degree of metamorphism the rock has undergone. The size, shape, and alignment of these grains provide valuable information about the rock's history and the conditions under which it formed.
It is likely a type of metamorphic rock, such as schist or gneiss, which form under high temperature and pressure conditions leading to the alignment of mineral grains into flat layers.
Foliated.
schist
A type of metamorphic rock similar to granite is gneiss. Gneiss is a foliated metamorphic rock that has a similar composition to granite but displays a banded texture due to the alignment of mineral grains during metamorphism.
Only sedimentary rock by the weathering, erosion and subsequent deposition of material from the metamorphic rock.
Sand would likely metamorphose into quartzite, a metamorphic rock made predominantly of quartz. Sand is primarily composed of quartz grains, and under heat and pressure, these grains can recrystallize and compact to form quartzite.
Those would be non-foliated metamorphic rocks, like quartzite and marble.
Metamorphic rock can vary in texture, with some being rough due to the presence of mineral grains and others being smooth due to recrystallization of minerals during the metamorphic process. The texture of metamorphic rock depends on factors such as the original rock type and the intensity of heat and pressure.
Non-foliated metamorphic rock, such as marble or quartzite, is characterized by the absence of visible layering or banding. The mineral grains in these rocks recrystallize and grow in a uniform manner, without forming distinct layers like in foliated rocks. This type of metamorphism typically occurs under conditions of high pressure and temperature without the presence of directed stress.
Metamorphic rocks are made from the action of heat, stress, and pressure on pre-existing rocks, of either an igneous, or a sedimentary origin. Also, sometimes a metamorphic rock can be resculpted to form another metamorphic rock.