WebFigure 6.4. 1: Garnet schist. Geologists use index minerals that form at certain temperatures and pressures to identify metamorphic grade. These index minerals also provide important clues to a rock’s sedimentary protolith and the metamorphic conditions that created it. Chlorite, muscovite, biotite, garnet, and staurolite are index minerals ... WebWhen and how does a slate form? Slate is created when mudstone or shale undergoes regional metamorphism at low pressure. When subjected to intense heat and pressure, the clay minerals in shale or mudstone can transform into mica. Mica minerals like biotite, chlorite, and muscovite make up the bulk of the slate.

Geology Chapter 8 Flashcards Quizlet

WebMar 10, 2010 · Slate is a metamorphic rock. Metamorphic rocks are rocks that change form from one type of rock into another because of time, pressure, heat and other factors. Other metamorphic rocks include... WebJul 6, 2009 · The shale acts like a sponge, sometimes the shale is so porous that the oil can be squeezed or sucked out, otherwise it can be extracted by crushing and heating the shale. People also asked ... greenisland carrickfergus

How is slate formed? - Slateplate

WebJul 7, 2024 · When muddy sediments are buried and compacted for a long time, they form shale. When shale is buried deeper, for a longer time, and heated by the Earth’s crust, it forms slate. What is the difference between clay and shale? As nouns the difference between clay and shale WebWhen muddy sediments are buried and compacted for a long time, they form shale. When shale is buried deeper, for a longer time, and heated by the Earth's crust, it forms slate. The qualities of shale and slate vary with the makeup of the original sediments, the degree of compaction, the amount of heat and the ... WebMost slate is formed below the earth's surface by changes in the makeup of shale, a sedimentary rock. Shale primarily consists of clay minerals and of fine particles of quartz. … greenisland church of ireland