PPT-Geologic Time Sedimentary Rock Formation

Favs Where do sediments come from Weathering breaking down rock into smaller pieces chemically and physically Erosion carrying away the particles and depositing them Glaciers. Stratigraphic concepts and . lithostratigraphy. GEOLOGICAL TIME. The passage of time since the formation of the . Earth is . divided into . geochronological. . units. .. T. hese are divisions . of time that may . 01: . Geologic Time . Scale. Huge sections of time are broken down into smaller groups of time:. E. ons, Eras, . P. eriods, and . E. pochs. Eon. is the largest time block. . (kind of like what we would think of as years).. 01: . Geologic Time . Scale. Huge sections of time are broken down into smaller groups of time:. E. ons, Eras, . P. eriods, and . E. pochs. Eon. is the largest time block. . (kind of like what we would think of as years).. Geological “Clocks”. Geologic time determination is subdivided into 2 categories:. Relative Dating: simply determines whether or not an event occurs before or after another event (e.g. a granite dike is younger than the surrounding sandstone since it intrudes across the sandstone in an outcrop).. Fossils. and. Unconformities. The Geologic Cycle. 3 key events: deposition, uplift, erosion. Sedimentation of beds A-D beneath the sea. Uplift above sea level and exposure of D to erosion. Continual erosion strips D away completely and exposes C to erosion. 6. th. Grade Earth Science . All Periods. . . www.geology.com. . . www.primap.com. Man Made Rocks vs. Natural Occurring Rock Formation. The difference between man made and natural occurring rock is that man made is something done by man. We made it the way it seems. Mount Rushmore is man made because it wasn't naturally formed. Naturally occurring happens by flood, weathering ,deposition, and etc. It happens naturally, no one touched it. It is organic being that Earth created the formation itself. . 3 Types of Rocks. There are 3 different types of rocks;. Igneous. Sedimentary. Metamorphic. Igneous Rock . . Igneous rocks are formed by magma and lava as it cools. Igneous rocks form in two different ways. . Sedimentary rocks form in 1 of 3 ways:. 1. . Clastic. Sedimentary Rocks- made of pieces and grains of other rocks. Material such as . sand . or . mud. -usually deposited in . water. Conglomerate sandstone. Lecture 7. Fundamentals of . Stratigraphy. . I. Geologic Time Scale, . Stratigraphic. Units, Sedimentary . Facies. Major Concepts. In the early 1800’s, the geologic rock record and time scale was deciphered from careful mapping and observations of fossil assemblages throughout Europe. Section 12.1 Discovering earth’s history. Uniformitarianism – the idea that physical, chemical, and biological laws that operate today also operated in the past; the present is the key to the past.. Relative age dating:. Age of a rock compared to other rocks. Used to understand a sequence of events. What are the ways to tell . RELATIVE AGE. .. 1. Law of Superposition (Undisturbed) . 2. Extrusion & Intrusion (Igneous Rock). Normally we think of time in terms of days or years but geologists commonly refer to events that happened millions or billions of years ago. For example earth is approximately 4.6 billion years old. GEOLOGIC TIME. lithostratigraphy. GEOLOGICAL TIME. The passage of time since the formation of the . Earth is . divided into . geochronological. . units. .. T. hese are divisions . of time that may . be referred . to in terms . A rock is a natural substance that is made up of solid crystals of different minerals that have been fused together into a solid lump. . Rocks can be classified by their attributes: . Texture. Hardness.