Earth Science Lab Final (Answered) Complete Verified Solution

Earth Science Lab Final (Answered) Complete Verified Solution Noncomformity 1) Younger sedimentary rocks on top of older metamorphic or intrusive igneous rocks 2) Imply period of uplift of deeply buried rocks Three types of uncomformities angular uncomformity, disconformity, and noncomformity Radiocarbon dating Using the carbon-14 isotope to date very recent events (Half-life of carbon-14 is only 5,730 years) (Only useful for dating events from historic past and very recent geologic history because Carbon-14 is present in small amounts in all organisms) Divisions within the geologic time scale 1) eons divided into -- eras (Phanerozoic includes Paleozoic, Mesozoic, and Cenozoic) 2) eras divided into -- periods 3) Periods divided into -- epochs Types of rock deformation 1) elastic deformation: stress is gradually applies and rocks return to original size and shape whens tress is removed ductile and brittle deformation happen when elastic limit is surpassed 2) Brittle deformation: results in fractures and common at/near the surface