Full Definition of PRECEDING. See preceding defined for English-language learners. See preceding defined for kids. ADVERTISEMENT. I have had a fever of about three weeks during the last and preceding month, from which I am entirely recovered except as to strength. â 2 Thomas Jefferson, letter, 4 Sept. 1823.
This commonly happens along volcanoes. When lava comes out of the volcano, the rocks there melt, usually forming different rocks. If you are asking on the chemical basis as to why they melt, it's because rocks are formed from minerals crystals. These crystals are formed from elements, which in turn also melts (some rocks are made of carbon, and since carbon melts, rock melts too). Source(s): Gsevilla Â· 7 years ago.
Rocks formed when magma becomes solid are known as igneous (fire-formed) rocks. One type of igneous rock is granite, which is formed from magma that never reaches the Earth's surface. This magma slowly cools within the Earth. Large crystals of minerals grow within the magma as it gradually hardens.ocks formed when magma becomes solid are known as igneous (fire-formed) rocks. One type of igneous rock is granite, which is formed from magma that never reaches the Earth's surface. This magma slowly cools within the Earth. Large crystals of minerals grow within the magma as it gradually hardens.