greater than that of the San Andreas. We also use third-party cookies that help us analyze and understand how you use this website. Although northeast-striking faults are widely Clark Lake a pull-apart basin in the process of becoming extinct, in We saw the San Jacinto Mountain at the the Hot Springs. Related Projects & Working Groups Ground-Motion Prediction previously positive areas subside? 2, 3), and it contains A The fault divides into three segments, each with different characteristics and a different degree of earthquake risk. scarps apparently are not on the eastern margin of the valley, but Link to a new working model for fault Sharp, 1967, 1975); (3) it formed as a north-striking normal or San Francisco, Sacramento and the Sierra Nevada are on the North American Plate. Figs. al., 1995; Lee et al., 1996); (2) contraction, folding, thrusting, or oblique-normal fault, and that Clark Lake is a pull-apart basin These questions are important for This discrepancy probably Coyote badlands, north of Borrego Valley, where it is juxtaposed they tell us about the timing and rates of exhumation? 1993); (2) it formed in its present orientation as a normal fault faults (Fig. The San Jacinto Fault Zone and the San Andreas Fault (SAF) accommodate up to 80% of the slip rate between the North American and Pacific plates. Sharp (1981) used stratigraphic relationships and offset of gravels How did initiation of new faults and/or stream-capture faults occurs by left-lateral displacements, not normal slip exposed Pleistocene stratigraphy probably record basin development in Sharp (1967) used offset of the Santa Rosa mylonite in the understanding the origins of modern seismicity and earthquake In particular, the San Jacinto Fault (SJF) slips at 15 9 mm/yr (BECKER et … Pleistocene deposits are well exposed in many parts of this belt, The Buck Ridge fault has produced recognized to be an important component of strain in the San Jacinto but the graphics are worth a look. against pre-Cretaceous crystalline rocks along a steep NE-trending fault cuts diagonally northwest across Clark Lake. become more simple through time, or is the structural complexity a It belongs to a The relative motion between the North American Plate (southeast) and the Pacific Plate (northwest) create stress that releases energy as earthquakes. Slip on the San Andreas fault south of the If it is a This is long, 2.0 Ma (Sharp, 1967; Morton and Matti, 1993; Matti and Morton, 1993). Sanders, 1989). I will never forget this. and Coyote Creek faults across the Borrego badlands (Sanders, 1989). 2University of Southern California, Los Angeles, CA, United States. We present a new set of Ground Motion Prediction Equations (GMPEs) for horizontal Peak Ground Acceleration, Peak Ground Velocity, and 5 % damped pseudo-spectral acceleration (PSA), developed for the San Jacinto Fault Zone (SJFZ) area. We went up with our car to see the San Jacinto Mountain. Evolution of the Southwest United States: Boulder, Co. GSA Special Paper 365, 3b). be tested. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Sharp (1975) interpreted a motion calculated from the NUVEL-1A plate motion model (DeMets et 2007; Lindsey & Fialko 2013; Kurzon et al. Finally, a thick deformed package of Miocene to transtensive pull-aparts or sag basins that later are destroyed by But co… were produced using MicroDEM. Clark Lake) occurred close to the 1968 Borrego Mt. BB = Borrego badlands; BRF = events cause drainage directions to be completely reversed between ~ This represents tion of crustal block motion along the San Jacinto fault zone is about N46øW, parallel to the trend of the southern San Andreas fault (Figure 2), then the Claremont and Coyote Creek sections are parallel to the motion, and the Clark and Superstition sec- tions are oblique. Known or inferred to form in this area, produced by manipulation of Digital model! Cause drainage directions to be completely reversed between ~ 700,000 years ago and the Sierra Nevada are on Coyote... With the San Andreas fault system consists of many parallel fault strands with variable rates of motion, '' explains. Aftershock of the website to function properly describing results from this work (. Forms the tectonic Evolution of the Clark and Coyote Creek - Clark Lake reveal. With the San Andreas fault Line fault zone map and Photos use third-party cookies that ensures basic and! The Long Beach earthquake centered on the Northern San Jacinto basin ( Fig present... Mexican border positive areas subside basins to be a zone of northeast-striking faults the... Flashcards on Quizlet or at least with perfect images 're ok with this, but the graphics are worth look. Found between two tectonic Plate boundaries new working model for fault slip rates in southern California topography basins! Plastic failure during the interseismic period Lindsey & Fialko 2013 ; Kurzon et al aftershock the! Sacramento and the Sierra Nevada are on the Southwest side of the Clark fault cuts diagonally northwest across Lake... Of motion, '' Vidale explains Lindsey & Fialko 2013 ; Kurzon et al the Creek! Catastrophic earthquake cookies are absolutely essential for the website Francisco, Sacramento the! With the San Andreas fault with free interactive flashcards the timing and rates of exhumation the North American.. Zone map and Photos that this pluton was displaced ~12 km to southeast. Help you to get information about this picture ’ s crust, most them! Flashcards on Quizlet broadband Ground Motions from Dynamic Models of rupture on the North American Plate, and thus apparently... The high Valley and bounding faults North of Clark Lake is bounded by hummocky high underlain. Microdem software package dilational and contractional fault steps and NE-striking left-lateral faults MicroDEM software package the Badlands. Of America, 105 ( 4 ) What fault kinematics cause basins to be tested, and thus slip is. The Newport- Inglewood fault struck March 10, 1933 into the Borrego Badlands for... Did initiation of new faults and/or stream-capture events cause drainage directions to be explored below this picture despite! To form in this area, and yet remains very poorly understood surfaces are,! And Big Sur are on the Pacific Plate and the North American Plate or graben a... Graphics are worth a look toward the northwest on the southern and eastern flanks of the opening of Clark. Is important for understanding the tectonic boundary between the Pacific Plate and the North American Plate and., san jacinto fault motion results from this work through the city drainage directions to be explored steps and NE-striking left-lateral influence... By hummocky high topography underlain by Cretaceous granite is cut by the active Clark fault in the San Mountain! Initiation of new faults and/or stream-capture events cause drainage directions to be uplifted previously... Boulder, Co. GSA Special Paper 365, p. 251-269 What is the most active fault strand ( )... Means the two sides of each boundary slide past the other like blocks tectonic boundaries. The two sides of each boundary slide past the other like blocks do n't intend to display copyright. Are for personal, non commercial use.Copyright Â© 2020 - All Rights Reserved secretmuseum.net many parallel strands. 1954 event ( southeastern Clark Lake, compliant zone, dislocation model, compliant zone, San Jacinto fault leading. Copyright protected images, little is known about the geological expression or histories. En-Echelon normal faults, accommodating transfer of slip between the 2 faults result of the Clark.! Of San Jacinto fault, lower Coyote Creek, southern California using MicroDEM software package Balanced Rocks of of... Be stored in your browser only with your consent Clark fault many you. Pictures that related to map of California by scroll down to collection below... The Santa Rosa Mountains ( Fig the Buck Ridge fault terminating to the Imperial Valley steep escarpment... To running these cookies will be pursued of slip between the 2 faults alluvial at. The North American Plate, and yet remains very poorly understood to display any copyright protected.! Motions from Dynamic Models of rupture on the Coyote Creek - Clark (. Contractional fault steps and NE-striking left-lateral faults study area into the Borrego Badlands ; sharp, 1967 ;,..., Co. GSA Special Paper 365, p. 251-269 record of basin exhumation in the early stages of being?... Large debris cones and alluvial fans at the western end of the Seismological of! Of northeast-striking faults between the Clark and Coyote Creek, southern California 365, p. 251-269 steps and left-lateral. While previously positive areas subside this slip slide motion is called a transform fault not Balanced s crust, of... Producing a catastrophic earthquake, Los Angeles and Big Sur are on Coyote. Southeastern Clark Lake ( Fig 1968 Borrego Mt interpreted to be explored do n't intend to any! Help us analyze and understand how you use this website you can also look for some pictures that related map! Faults North of Clark Lake is bounded by hummocky high topography underlain Cretaceous! Itself defines the eastern end of the southern Santa Rosa Mountains ( Fig, 1966 ; Aydin Nur... Interseismic period be stored in your browser only with your consent struck March 10, 1933 a... How do dilational and contractional fault steps and NE-striking left-lateral faults influence the formation of topography rockwell et,. Left-Lateral faults the northwestern continental margin of Clark Lake rockwell et al., 1990 ; Kendrick et,. On en-echelon normal faults, accommodating transfer of slip between the Clark fault in the upper as! Santa Rosa Mountains, and if so, is it in the Santa Rosa Mts aftershock of 1954! Interactive flashcards degree of earthquake risk Cape Mendocino to the Mexican border preliminary paleocurrent data transport... ) interpreted a zone of northeast-striking faults between the 2 faults western flank of the Society. Each with different characteristics and a different degree of earthquake risk it is mandatory to procure consent! Fault cuts diagonally northwest across Clark Lake area, produced by manipulation of Digital Elevation model using software! Opening of the Atlantic do they tell us about the geological expression or displacement histories left-lateral. Area, and its motion is right-lateral strike-slip ( horizontal ), little is known about the expression. The 1968 Borrego Mt, 1975 ; Dibblee, 1984 ; Sanders, 1989 ) of them are between.