PPT-The Geologic Column

Comparison of Conventional amp ShortAge Geology Faith Reason and Earth History Chapter 14 by Dr Leonard Brand Shortage Geology Conventional Geology Assumptions Interpretations Challenges. GEOL 2110. Lecture 2. Scales of Time and Change. Major Concepts. Geological events cover huge amounts of time that are hard to grasp in the span of human life. We tend to focus on dramatic, short-lived geologic events that we witness and are unaware of subtle, but geologically important events . 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).. Textbook for geologists (2002). Geologic map of the Sheep Mt. Anticline, Wyoming, based on air photos.. From . Banjeree. and . Mitra. . 2004. AAPG Bulletin 88(9):1227-1237.. What are the primary applications of aerial photographs for geologists?. How long ago were the dinosaurs here? How do we even describe geologic time anyway?. EONS. which are divided into . ERAS. ,. which are divided into. . PERIODS. ,. which are divided into. . EPOCHS. Chapter 7 lesson 4. What is the geologic time scale?. Geologists use the geologic time scale to show Earth’s history.. It is a record of the geologic events and the evolution of life forms as shown by the fossil record.. In depth: chapter 19. Geologic Time Scale. Examining layers of sedimentary rock, scientists have put together a chronology of Earth’s history.. It is divided into 4 Eras:. 1. Precambrian (3.5 . bya. 8. th. Grade Science. Geologic Time. Geologic time. . - Earth’s history is divided into units of time that make up the . Geologic . T. ime . S. cale. .. Time units on the scale are based on the appearance (. It has been suggested that, sometimes, drastic changes that can form a new species . take . place.. Under this idea, a new species may form after a group becomes separated from the original population.. Who was James Hutton?. In the late 1700s, James Hutton began to question some of the ideas regarding the Earth.. He found fossils and saw them as evidence of life forms that no longer exist. . Different types of fossilized creatures were found in different layers of rock.. 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. Faith, Reason, and Earth History. Chapter 14. by Dr. Leonard Brand. Short-age. Geology. Conventional. Geology. Assumptions. Interpretations. Challenges. Starting Assumptions. Affect how scientists interpret data. Spacing Each section or subsection should be separated from the previous text by 12 points as indicated in the format/paragraph menu 24 Section and subsection headings Number the section and subsect