on April 15, 2022
Is Ammonite an index fossil?
Regional SpecificsWith more than 10,000 species of ammonites known from the fossil record, this group is one of the most characteristic marine fossils of Cretaceous-age rocks around the world. Because they were so diverse, ammonites are considered an index fossil. What type of fossil is an ammonite? shelled cephalopods Ammonites were shelled cephalopods that died out
on April 15, 2022
How igneous rocks are formed step by step?
Regional SpecificsIgneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. All magma develops underground, in the lower crust or upper mantle, because of the intense heat there. How igneous rock are formed? Igneous rocks (from the
on April 15, 2022
What is a normal fault?
Regional SpecificsNormal, or Dip-slip, faults are inclined fractures where the blocks have mostly shifted vertically. If the rock mass above an inclined fault moves down, the fault is termed normal, whereas if the rock above the fault moves up, the fault is termed a Reverse fault. What is a normal fault simple definition? normal fault –
on April 15, 2022
What rocks are created from felsic lava and magma?
Regional SpecificsFelsic magma is viscous and does not flow easily. Most felsic magma will stay deeper in the crust and will cool to form igneous intrusive rocks such as granite and granodiorite. What type of rock is associated with lava and magma? igneous rocks The two main categories of igneous rocks are extrusive and intrusive. Extrusive
on April 15, 2022
What is the difference between Slate and Quartzite?
Regional SpecificsIs Slate the same as quartzite? Slate has a fine to medium grained surface texture. It renders a very graceful, natural finish to any building or home. Quartzite can be cleft like slate, or can be smooth and more similar to marble and granite in appearance. What is the difference between slate and quartz? Quote
on April 15, 2022
What are examples of divergent plate boundaries?
Regional SpecificsIn plate tectonics a divergent boundary is the boundary between two contiguous lithospheric plates that are separating. As the plates diverge, new material rises by magmatic processes from the Earth’s mantle, creating new lithosphere, so it is also called a constructive edge. The most active divergent edges are responsible for mid-oceanic ridges, where the mid-oceanic