GEOLOGY

Detailed explanation-1: -Bedrock can be made of most types of rock, such as granite, limestone, or like this piece of bedrock, sandstone. Bedrock is the hard, solid rock beneath surface materials such as soil and gravel. Bedrock also underlies sand and other sediments on the ocean floor.

Detailed explanation-2: -Bedrock is the solid rock that makes up the earth’s crust. It forms a continuous foundation beneath the whole state, but in most of Maine, bedrock is covered by some thickness of surficial sediments, soil, and vegetation.

Detailed explanation-3: -How is bedrock formed? This dense rock has been created when loose sediments come under pressure (lithified), when magma cools and hardens, or when other rocks change form. These processes make types of rock called igneous, metamorphic and sedimentary.

Detailed explanation-4: -Bedrock is made up of igneous, sedimentary, or metamorphic rock, and it often serves as the parent material (the source of rock and mineral fragments) for regolith and soil. Bedrock is also a source of nitrogen in Earth’s nitrogen cycle. A bedrock deposit that occurs at Earth’s surface is called an outcrop.

Detailed explanation-5: -These include among others: molybdenite, scheelite, cassiterite, wolframite, beryl and fluorite. Pegmatite is a rock of similar composition as a granite, but with much larger crystals, in which minerals such as quartz in extreme cases may grow to several metres in size, with single crystals weighing thousands of tons.