Geol 240Dolan, James2012 FallWeek 6Lecture 11October 4Announcements- Lab Quizzes started, so make sure to attend all your designated labs. - Get ready for the midterm- A midterm copy from 1999 will be available online on Blackboard- It is about 60 questions- Study strategies: Will include m/c questions and true/false- Take your time and read through each question carefully- Do your pre-lab so you can be ready for the quizzes- No specific questions on dates, so you do not have to memorize dates, but do know the details of earthquake - Bring a pencil, no Scantrons, will be supplied for you - Don not go through your notes and study directly from reading. Go through your notes and you think of a question and make up your own question.- Midterm is Tuesday, October 9, 2012- Study session is Monday at VCK 101 with the professor at 6pmOutline of Last LectureI. Basin and ProvinceII. Western Boundary, the East Side of the Sierra NevadaIII. “Constellation” of GPS SatellitesIV. San Andreas Fault and WasatchV. Basin RangeVI. Major Earthquakes and their magnitudesVII. Alquist-Priolo Special Studies Zones Act (SSZ Act) Outline of Today’s LectureI. San Andreas Fault ContinuationII. In depth explanation of the earthquakeIII. San Haciento and Elsenor IV. Owens Valley EarthquakeV. Dead Valley VI. Eastern California Sheer Today’s Lecture- The san Andreas fault is the dominant fault - San Andreas proper and the Hayward fault These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- The San Andreas transform fault system began about 28 million years ago with the collision of the Pacific plate and the North American plate. This collision caused the subduction zone along the coast to cease and the two plates began to slide past each other. The Pacific plate moves northwest relative to the American plate, a system referred to as a right lateral fault.- Major historic earthquakes in California 5- Major strands of the san Andreas system picture - About 35 % of earthquakes every other fault, rest is SAF- We are overdue waiting for the big earthquake, it should be every 100 years we are 158 years overdue - Fault scarp insert picture  rupture right u up to the border and really stressed out San Jacinto and Elsenor - The 2010 el mayor earthquake - 1872 Owens valley earthquake magnitude? Huge disagreements on how big it was estimates 7.4 to 8.0 = some people suggested it was bigger than 1906. - Eastern California sheero N.S. zone of Rl s-s faultso 1992 M 7.3 launderso 1999 Mw 7.1 hector mine - California’s state mineral – u know it’s a mineral when it ends in -ine- 1872 earthquake of thee notion of standing under a door adobe brick building, typically only the doorways are left. - Owens valley fault-> mainly right-lateral strike-slip- Death valley… Bad water basin - The san Andreas fault in SoCal - Its parallel …the motion of plates, the blocks are moving parallel Drawing of San Andreas Fault, mismatch in the middle where the part of Southern Cali is being squeezed An additional component of N.S. shortening - The SSZ Act was signed into law in California following the 1971 San Fernando earthquake. The Act requires that:- 1. The California State Geologist compiles and published map delineating active faults zones, called Special Studies Zones of California.- 2. The local governments regulate constructions within the Special Studies Zones, and prohibit building construction for human occupancy across an active fault trace.- 3. Prospective buyers of any real property located within the Special Studies Zones must be notified of the fact by the sellers or by their representing