PPT-Integrating geologic maps with fault mechanics

John Singleton George Mason University NSF Cutting Edge Workshop 2012 Exercise overview Relate basic stress concepts and fault mechanics Andersonian theory MohrCoulomb failure frictional . 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. Topographic Maps. Contouring. Topographic contours indicating surface relief. Image taken from US Army training manual.. Solid yellow lines represent surface isobars, line of equal air pressure. Green dashed lines are geopotential heights, the altitude at which 500 millibars of air pressure are attained. These types of contour maps are used by meteorologists. The weather system shown is the Storm of the Century, a powerful winter storm called a nor’easter.. 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. 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).. Section 2: . Types of Maps. K. What I Know. W. What I Want to Find Out. L. What I Learned. Essential Questions. What are the different types of maps?. Why are different maps used for different purposes?. East-Central Idaho — . Metasedimentary. Strata, . Ore . Types, . Folds, Dikes, and Metamorphic Overprint. Art . Bookstrom. , Steve Box, Pam Cossette, . Tom Frost, and Shane . Kostka. . Regional Geologic Map showing the Mesoproterozoic Belt-Purcell basin and the Lemhi sub-basin . America. Dane S. VanDervoort. 1. , Chong Ma. 2. , Mark G. Steltenpohl. 2. , Joshua J. Schwartz. 3. 1. Geologic Investigations Program, Geological Survey of Alabama, Tuscaloosa, Alabama . 35486. 2. Department of Geosciences, Auburn University, Auburn, Alabama . . What Is an Earthquake?. An . earthquake. is the vibration of Earth produced by the rapid release of energy. Energy released radiates in all directions from its source, the . focus. . Energy is in the form of waves. 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.. a. Fossils. 3. Geologic Time Scale. 4. Geologic Belts. 5. NC Geologic History. How do we know . geologic . history. ?. Earth's History. Earth's history spans over a length of . 4.5 billion . years. Geologists have divided that time into units based on major geologic events and life forms. III. Speaker Performance. Giving a Memorable . Technical Talk. If your audience walks away . understanding . your 1-3 main points, . gains new appreciation . for (or is convinced of) them, and . remembers . 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. Time: Wed. 1 – 3 pm 3 UNITS. COURSE OUTLINE. MODULE 1. Map reading and interpretation of structural features and geological history in simple geological maps.. . MODULE . 2. Practical recording of geological features on base maps.. Department of Earth Science and Engineering. Imperial College London. Meng-Che. Wu. meng-che.wu08@imperial.ac.uk. Jian. . Guo. Liu. j.g.liu@imperial.ac.uk. Outline. Background & Purpose. Method Development.