GI 251 – Event Stratigraphy Who am I Who are you What the class is about What you need to know What you need to do https://www.usgs.gov/staff-profiles/jin-si-r-over https://www.usgs.gov/news/researcher-spotlight-jin-si-over Myrmarachne formicaria - Spider Identification & Pictures Who am I – map of New York Map of the State of New York, USA - Nations Online Project Who am I – picture of college SUNY Geneseo - Humans of University Building schedules Start Feb 8th | SUNY Geneseo Students enjoying their time and discussing their findings. hb-ff section 00281-hb435cm 00690-hb435cm 00699-hb435cm 00249-hb515cm 00703-hb500cm 00262-hb500cm 00693-hb435cm 00692-hb435cm 00695-hb435cm 00252-hb510cm Center Hill Tephra at Hurricane Bridge, TN hb-ff section 00281-hb435cm 00690-hb435cm 00699-hb435cm 00249-hb515cm 00703-hb500cm 00262-hb500cm 00693-hb435cm 00692-hb435cm 00695-hb435cm 00252-hb510cm Center Hill Tephra at Hurricane Bridge, TN fig13-wny-ff-c Mt Rundle, Vermillion Lakes : Photos, Diagrams & Topos : SummitPost Summit Post C:\1-OVER-Files and Data\DATA-OVER\Photos\2013 summer\2013 Alberta-Montana photos\2013vi08 Jura Creek Exshaw 06.JPG Jura Creek Jura Creek Gereke and Schindler, 2012 Schmitz pers . comm., 2014 Benner Quarry 372.28 +/- 0.15 372.55 371.85 C:\djo\conodont work-transfer folder\1999iv Morroco\1999iv19-mrirt - Bou Ounabdau near II - section w schindler02.JPG 1999iv19-mrirt - Bou Ounabdau near II - 02 gsa2003 mrirt-morocco-sea level curve •Short Eccentricity cycles: ~5 m •Obliquity cycles: •~2 m •Precession cycles: ~60 cm •Cycles occur with measured accuracy •Dominant cycle can be used to assess deposition rate, latitude, and duration •Haalstaat cycles – subprecession millennial scale ~5cm • • • Who am I – trying to figure out how to play tennis here SUNY Geneseo Tennis Courts https://us.fulbrightonline.org/ Who am I – Fulbright scholar – funded by the Congress of the United States. The idea is that you learn more about the United States, you get to work on your English skills; I get to learn more about Czechia and take this information back to the US, develop Czech language skills, and work with Dr. Kumpan as well as others on collaborative research projects. Who are you? What the class is about – Event Stratigraphy Event stratigraphy is the correlation of sedimentary sequences using prominent marker beds, isochronic horizons such as tephra beds, depositional and biotic changes, or geochemical/isotopic excursions. These are tied to a biostratigraphic framework, but also offer higher resolution than can be resolved by biostratigraphy alone. Event analysis is one of the basic underpinnings for deciphering the entire stratigraphic record. Kauffman (1988) recognizes four broad categories: Physical event units Chemical event units Biological event units Composite event units What the class is about – Event Stratigraphy utility – refined correlation – knowledge of strata for such things as extraction and sequestration industry, agriculture, construction utility – understanding earth history through investigation of global events and then a predictor for changes in the modern ON OCEANS AND CLIMATE CHANGE - National Maritime Foundation What you need to know requires knowledge of stratigraphy review of stratigraphic principles 2003iv27 - Seth Greene, Queenston-Reynales-02 Superposition and Walther’s Law strata in Rochester Gorge at the lower falls tidalPara parasequence parasequence van aggStacking Changes in sea level autocyclic – local and regional changes due to facies shifts and tectonics vs allocyclic – global changes due to large scale tectonism, oceanic crust dynamics, glaciation, and climate changes Three most important controls on the volume of sea water are: glaciation: 10 - 200 m changes over 1 - 100 ky ground water: 1 - 40 m over 0.1 - 100 ky ocean temperature: 1 - 10 m over 0.1 - 10 ky Three other controls on the displacement of sea water are oceanic large igneous provinces, global tectonics, and sediment fill. type1Shelf Sequence stratigraphy – recognition of genetically related strata bound by unconformities or their conformable equivalents schlager 1992 model.jpg type1Shelf Kope-Fairview-Bellevue at Maysville02 Kope-Fairfield at Maysville, KY Bisher-Lily on Ohio 32-02 Bisher-Lily on Oh32-02, note bioherms Bisher-Lily on Ohio 32-02 Bisher-Lily on Oh32-02, note bioherms La Vid Group, Bernesga Valley, Cantabrian Zone, NW Spain 15vi2002-03 La Vid Group, Emsian La Vid Group, Bernesga Valley, Cantabrian Zone, NW Spain 15vi2002-03 La Vid Group, Emsian Frasnian – Mt. Morris Dam, New York MtMorris Dam 1ix2002-01 Frasnian – Mt. Morris Dam, New York MtMorris Dam 1ix2002-01 What is the milankovitch cycle and how does it correlate to the ice ages? | Socratic Long eccentricity: 405 ky Short eccentricity: ~ 100 ky Obliquity: ~ 40 ky Precesssion: ~ 20 and 16 ky in deep time the intervals are less certain; 405 ky is stable EPR_77_2 What you need to do... syllabus readings discussion problem sets research paper – presentation on an event, or some aspect of event stratigraphy; paper, presentation What you need to do... For our next meeting you need to read Kaufman (1988) and Simmons et al. (2020) to review event stratigraphy terminology and application. At our next meeting we will discuss these articles and then plan for the rest of the semester which will involve your presentation of a specific event and review of events in intervals of geologic time.