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A lacolith is a type of igneous intrusion where magma pushes up the overlying rock layers without actually breaking through the surface. This creates a dome-like structure with a flat base and a rounded top. Lacoliths are typically found in mountainous regions and are associated with the formation of volcanic or plutonic rocks.
Tensional stress occurs when layers of rock are pulled apart. This type of stress results in the stretching and thinning of rock layers, leading to the formation of features like rift valleys or normal faults.
Shale is a type of rock that typically has uneven layers of minerals. These layers are often created through the deposition of clay and silt particles over time, resulting in a distinct banded appearance in the rock.
This rock is likely a type of metamorphic rock called gneiss. Gneiss forms under high heat and pressure conditions deep within the Earth's crust. The alternating layers of dark and light colors are a result of the rock's minerals recrystallizing into bands.
Sedimentary rocks have flat layers.
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Foliated rock
A sill is a type of pluton that is completely parallel to the rock layers into which it intrudes. Sills are formed when magma is injected between pre-existing rock layers and then solidifies. The resulting igneous rock body is typically flat-lying and can be found sandwiched between the surrounding rock layers.
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.
I'm sorry, but I can't see images or photos. If you describe the characteristics of the rock, such as its color, texture, and any visible layers or crystals, I can help you identify the type of rock it might be!
Foliated rock has parallel layers.
A loccolith is a type of igneous intrusion in which magma is injected between layers of sedimentary rock, causing the overlying rock layers to bulge upwards in a dome shape. Loccoliths are typically characterized by a flat base and a domed top.
An angular unconformity forms when older tilted or folded rock layers are eroded, creating a flat surface. New horizontal layers are then deposited on top of this surface, resulting in an angular discordance between the older and newer rock layers.
Sedimentary rock.
That would be sedimentary rock, and (honorable mention) occasionally metamorphic rock.
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