Dr. Michael John Willis
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Field Guide to Neotectonics of the San Andreas Fault System, Santa Cruz Mountains, in Light of the 1989 Loma Prieta Earthquake
Department of the Interior U.S. Geological Survey Field Guide to Neotectonics of the San Andreas Fault System, Santa Cruz Mountains, in Light of the 1989 Loma Prieta Earthquake | Q|s | Landslides (Quaternary) I yv I Vaqueros Sandstone (Oligocene) r-= I San Lorenzo Fm., Rices Mudstone I TSr I member (Eocene-Oligocene) IT- I Butano Sandstone, ' Pnil mudstone member (Eocene) Coseismic surface fractures, ..... dashed where discontinuous, dotted where projected or obscured ___ _ _ Contact, dashed where approximately located >"«»"'"" « « Fault, dotted where concealed V. 43? Strike and dip Strike and dip of of bedding overturned bedding i Vector Scale / (Horizontal Component of Displacement) OPEN-FILE REPORT 90-274 This report is preliminary and has not been reviewed for conformity with U. S. Geological Survey editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U. S. Government. Men to Park, California April 27, 1990 Department of the Interior U.S. Geological Survey Field Guide to Neotectonics of the San Andreas Fault System, Santa Cruz Mountains, in Light of the 1989 Loma Prieta Earthquake David P. Schwartz and Daniel J. Ponti, editors U. S. Geological Survey Menlo Park, CA 94025 with contributions by: Robert S. Anderson U.C. Santa Cruz, Santa Cruz, CA William R. Cotton William Cotton and Associates, Los Gatos, CA Kevin J. Coppersmith Geomatrix Consultants, San Francisco, CA Steven D. Ellen U. S. Geological Survey, Menlo Park, CA Edwin L. Harp U. S. Geological Survey, Menlo Park, CA Ralph A. -
2013-2014 National Scar Committe
National Report to SCAR for year: 2013-2014 MEMBER COUNTRY: USA Activity Contact Name Address Telephone Fax Email web site NATIONAL SCAR COMMITTEE Senior Program Officer, Staff to Delegation U.S. Polar Research Board The National National Academy of Academies Polar Laurie Geller 202 334 1518 202 334 3825 [email protected] Sciences Research Board 500 Fifth Street NW (K-633) Washington DC 20001 SCAR DELEGATES Ohio State University 1) Delegate/ Department of Geological President, Executive Terry Wilson (614) 292-0723 (614) 292-7688 [email protected] Sciences 155 South Oval Committee Mall Columbus, OH 43210 Departments of Biology and Environmental Science HR 347 2) Alternate Delegate Deneb Karentz (415) 422-2831 (415) 422-6363 [email protected] University of San Francisco 2130 Fulton Street San Francisco, CA 94117- STANDING SCIENTIFIC GROUPS LIFE SCIENCES Associate Research Professor, Division of Earth and Ecosystem Sciences 1) Voting Member Alison Murray Desert Research Institute 775 673 7361 775 673 7485 [email protected] 2215 Raggio Parkway Reno, NV 89512 Departments of Biology and Environmental Science HR 347 2) Deneb Karentz University of San Francisco (415) 422-2831 (415) 422-6363 [email protected] 2130 Fulton Street San Francisco, CA 94117- 1080 1 Activity Contact Name Address Telephone Fax Email web site Deputy Chief of Medicine of Extreme Environments NASA 3) Marc Shepanek 202 358 2201 [email protected] 300 E Street Southwest Washington, DC 20024-3210 Professor and Director Natural Resource Ecology 4) Diana Wall -
Neotectonics of the Polish Carpathians in the Light of Geomorphic Studies: a State of the Art
Acta Geodyn. Geomater., Vol. 6, No. 3 (155), 291-308, 2009 NEOTECTONICS OF THE POLISH CARPATHIANS IN THE LIGHT OF GEOMORPHIC STUDIES: A STATE OF THE ART Witold ZUCHIEWICZ Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, A. Mickiewicza 30, 30-059 Kraków, Poland *Corresponding author‘s e-mail: [email protected] (Received January 2009, accepted March 2009) ABSTRACT Neotectonics of the Carpathians used to be studied extensively, particular attention being paid to the effects of large-scale domal uplifts and open folding above marginal zones of thrusts and imbricated map-scale folds, and rarely to the characteristics of young faulting. Neotectonic faults tend to be associated with the margins of the Orava-Nowy Targ Basin, superposed on the boundary between the Inner and Outer Western Carpathians, as well as with some regions within the Outer Carpathians. The size of Quaternary tilting of the Tatra Mts. on the sub-Tatric fault were estimated at 100 to 300 m, and recent vertical crustal movements of this area detected by repeated precise levelling are in the range of 0.4-1.0 mm/yr in rate. Minor vertical block movements of oscillatory character (0.5-1 mm/yr) were detected along faults cutting the Pieniny Klippen Belt owing to repeated geodetic measurements performed on the Pieniny geodynamic test area. In the western part of the Western Outer Carpathians, middle and late Pleistocene reactivation of early Neogene thrust surfaces was suggested. Differentiated mobility of reactivated as normal Miocene faults (oriented (N-S to NNW-SSE and NNE-SSW) in the medial portion of the Dunajec River drainage basin appears to be indicated by the results of long-profile analyses of deformed straths, usually of early and middle Pleistocene age. -
Determining the Architecture of the Terror Rift from Stratal Dips in Reflection Seismology Profiles
Determining the Architecture of the Terror Rift from Stratal Dips in Reflection Seismology Profiles Research Thesis Presented in partial fulfillment of the requirements for graduation with research distinction in Geological Sciences in the undergraduate colleges of The Ohio State University By Will Blocher The Ohio State University December 2013 Project Advisor: Professor Terry Wilson, School of Earth Sciences Abstract - - - - - - - - - 1 Geologic Setting and Background to the Research Problem - 2 Study Approach, Data and Methodology Approach - - - - - - - - 4 Seismic Reflection Profiles - - - - - 7 Methods - - - - - - - - 9 Selecting Fold-Outs - - - - - - 17 Results and Research Significance - - - - - 19 Possibilities for Future Research - - - - - 23 Acknowledgements - - - - - - - 23 References - - - - - - - - - 24 Appendix - - - - - - - - - A1-A9 Abstract The Terror Rift is the youngest part of the West Antarctic rift system in the Antarctic interior. The Terror rift basin lies beneath the western Ross Sea near the Transantarctic Mountains. The rift has undergone multiple episodes of rifting, as evidenced by superimposed tilts of basin strata in fault blocks that define the rift. A younger tilt pattern has been superimposed on the rift around Ross Island, where the crust has flexed downward under the weight of young volcanoes. Mapping tilt directions provides a means to reconstruct the orientation of faults that produced tilt, and discriminate fault-induced tilt from younger flexure. This study is using seismic reflection profiles, imaging subsurface structure, to reconstruct tilts. Where two seismic lines cross, the true direction of tilt and the magnitude of tilt can be measured at multiple levels downward through the sequence of strata, such that changes in attitudes of bedding with depth can be determined. Maps of tilt directions from multiple crossing profiles for the time period marked by each seismic reflector will allow us to infer the orientations of these surfaces in 3D space. -
Examination of Exhumed Faults in the Western San Bernardino Mountains, California: Implications for Fault Growth and Earthquake Rupture
Utah State University DigitalCommons@USU All Graduate Theses and Dissertations Graduate Studies 5-2005 Examination of Exhumed Faults in the Western San Bernardino Mountains, California: Implications for Fault Growth and Earthquake Rupture Joseph R. Jacobs Utah State University Follow this and additional works at: https://digitalcommons.usu.edu/etd Part of the Geology Commons Recommended Citation Jacobs, Joseph R., "Examination of Exhumed Faults in the Western San Bernardino Mountains, California: Implications for Fault Growth and Earthquake Rupture" (2005). All Graduate Theses and Dissertations. 5246. https://digitalcommons.usu.edu/etd/5246 This Thesis is brought to you for free and open access by the Graduate Studies at DigitalCommons@USU. It has been accepted for inclusion in All Graduate Theses and Dissertations by an authorized administrator of DigitalCommons@USU. For more information, please contact [email protected]. EXAMINATION OF EXHUMED FAULTS IN THE WESTERN SAN BERNARDINO MOUNTAINS, CALIFORNIA: IMPLICATIONS FOR FAULT GROWTH AND EARTHQUAKE RUPTURE by Joseph R. Jacobs A thesis submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE in Geology Approved: James P. Evans Susanne U. Janecke Major Professor Committee Member Peter T. Kolesar Laurens H. Smith, Jr. Committee Member Interim Dean of Graduate Studies UTAH STATE UNIVERSITY Logan, Utah 2005 ii ABSTRACT Examination of Exhumed Faults in the Western San Bernardino Mountains, California: Implications for Fault Growth and Earthquake Rupture by Joseph R. Jacobs, Master of Science Utah State University, 2005 Major Professor: Dr. James P. Evans Department: Geology The late Miocene Cedar Springs fault system is a high-angle transpressional system in the Silverwood Lake area, western San Bernardino Mountains, southern California. -
Arctic-Antarctic Seafloor Mapping Meeting 2011 Stockholm May 3-5
Arctic‐Antarctic Seafloor Mapping Meeting 2011 Stockholm May 3‐5 Meeting Report Hosted by the Department of Geological Sciences, Stockholm University Arctic-Antarctic meetings, Department of Geological Sciences, Stockholm University 3-5 May 2011 Summary The First Arctic‐Antarctic Seafloor Mapping Meeting was held at Stockholm University between May 3 and 5, 2011. The aims of the meeting were to bring together key actors conducting bathymetric mapping in Arctic and Antarctic waters for the purpose of coordinating mapping activities, improve the International Bathymetric Chart of the Arctic Ocean (IBCAO) compilation, move forward towards a first bathymetric compilation of the International Bathymetric Chart of the Southern Ocean (IBCSO), and discuss the uses and technical requirements of regional bathymetric compilations as well as data sharing and acknowledgment of bathymetric data sources. In total, 44 participated in the meeting from 15 countries. The meeting was opened with a keynote presentation by IOC Executive Secretary Dr Wendy Watson‐ Wright titled “Why do we need to learn more about the Arctic and Southern Oceans?”. This was followed by 23 talks by the meeting participants as well as posters presented at a poster session. These presentations filled the meeting agenda for one and half day. The second part of the meeting was devoted to two breakout sessions: one focused on the IBCAO while the other focused on IBCSO. A substantial amount of new bathymetric data to be included in future versions of these two regional mapping projects were identified during these breakout sessions. A new Editorial Board (EB) for IBCAO was established during the meeting, although additional EB members may still be appointed after the meeting. -
Curriculum Vitae
Curriculum vitae RNDr. Petra Štěpančíková, Ph.D. Born 1976 in Valašské Meziříčí, Czech Republic Academic history: 2001 MSc. graduated in Physical Geography, Faculty of Science, Charles University, Prague 2005 RNDr. degree in Physical Geography, Faculty of Science, Charles University, Prague 2007 PhD. degree in Physical Geography, Faculty of Science, Charles University, Prague Professional employment: 2000 - Institute of Rock Structure and Mechanics, Czech Acad.Sci., Prague 2000-2014 Department of Engineering Geology, 2015- Head of Department of Neotectonics and Thermochronology Research interests: tectonic geomorphology, active tectonics, paleoseismology (study areas in Czech Republic, Spain, Mexico, USA), long-term morphotectonic relief evolution, geomorphological mapping Selected significant project participation: Manifestations of Late Quaternary tectonics within the Sudetic Marginal Fault zone 2008- 2010; postdoc project, Czech Science Foundation, GA ČR 205/08/P521, principal investigator Hydrogeological effects of seismicity in the Hronov-Poříčí fault zone area, 2005-2008; doctoral project, Czech Science Foundation GA ČR 3D monitoring of micro-movements in within the zone of expression of African – Euroasian colision, 2006-2008; Czech Science Foundation GA ČR Paleoseismological assessment of fault structures in the vicinity of Temelín nuclear power plant, 2009-2010; State Office for Nuclear Safety, team researcher Identification and characterization of seismogenic faults in Central Mexican Volcanic belt: implications for seismic -
Fault Segmentation and Controls of Rupture Initiation and Termination
DEPARTMENT OF THE INTERIOR U. S. GEOLOGICAL SURVEY PROCEEDINGS OF CONFERENCE XLV Fault Segmentation and Controls of Rupture Initiation and Termination Palm Springs, California Sponsored by U.S. GEOLOGICAL SURVEY NATIONAL EARTHQUAKE-HAZARDS REDUCTION PROGRAM Editors and Convenors David P. Schwartz Richard H. Sibson U.S. Geological Survey Department of Geological Sciences Menlo Park, California 94025 University of California Santa Barbara, California 93106 Organizing Committee John Boatwright, U.S. Geological Survey, Menlo Park, California Hiroo Kanamori, California Institute of Technology, Pasadena, California Chris H. Scholz, Lamont-Doherty Geological Observatory, Palisades, New York Open-File Report 89-315 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 1989 TABLE OF CONTENTS Page Introduction and Acknowledgments i David P. Schwartz and Richard H. Sibson List of Participants v Geometric features of a fault zone related to the 1 nucleation and termination of an earthquake rupture Keitti Aki Segmentation and recent rupture history 10 of the Xianshuihe fault, southwestern China Clarence R. Alien, Luo Zhuoli, Qian Hong, Wen Xueze, Zhou Huawei, and Huang Weishi Mechanics of fault junctions 31 D J. Andrews The effect of fault interaction on the stability 47 of echelon strike-slip faults Atilla Ay din and Richard A. Schultz Effects of restraining stepovers on earthquake rupture 67 A. Aykut Barka and Katharine Kadinsky-Cade Slip distribution and oblique segments of the 80 San Andreas fault, California: observations and theory Roger Bilham and Geoffrey King Structural geology of the Ocotillo badlands 94 antidilational fault jog, southern California Norman N. -
SERCE News – December 2014
--------------------------------------------------------------------------------------------------------------------- SCAR SERCE News – December 2014 Upcoming events related to Solid Earth – Cryosphere Interaction Research EGU General Assembly 2015 (EGU2015), 12 Apr 2015 - 17 Apr 2015, Vienna, Austria. GD6.2/CR2.5 Geodynamic evolution of the polar regions and interaction with the cryosphere Convener: Douglas Wiens Co-Conveners: Terry J. Wilson, Karsten Gohl, Pippa Whitehouse Link: http://meetingorganizer.copernicus.org/EGU2015/session/18612 The Antarctic and Arctic regions are unique geodynamic environments where the solid earth, the cryosphere and the global climate system are intimately linked. This session will explore new data and modeling studies bearing on any aspect of the geological and geodynamic evolution of the polar regions, with a particular emphasis on interactions with the cryosphere. Topics may include crustal evolution, crust and mantle structure beneath the ice sheets, measurements of deformation and seismicity, geothermal heat flux, incorporation of geological, geodetic and geophysical measurements into geodynamic modeling of glacial isostatic adjustment, and the assimilation of ground-based measurements with data from current space missions. The deadline for the receipt of Abstracts is 07 Jan 2015, 13:00 CET. A SERCE ad hoc meeting will also be held at the EGU meeting in Vienna – watch the ‘splinter meeting’ schedules……… --------------------------------------------------------------------------------------------------------------------- Symposium & Workshop - May 26-29, 2015 University of Alaska Fairbanks Geophysical Institute, Fairbanks, Alaska Symposium/Workshop Organisers: Jeff Freymueller, Abbas Khan, Michael Bentley, Pippa Whitehouse and Matt King The workshop is sponsored by IAG sub-commission 3.2 “Cryospheric Deformation” and SCAR SERCE. Symposium Description Melting of ice sheets and glaciers adds to the mass of water that fills the ocean basins and results in solid Earth deformation over a large range of spatial and temporal scales. -
Fault Geometry and Kinematics Within the Terror Rift, Antarctica THESIS
Fault Geometry and Kinematics within the Terror Rift, Antarctica THESIS Presented in Partial Fulfillment of the Requirements for the Degree Master of Science in the Graduate School of The Ohio State University By William B. Blocher Graduate Program in Earth Sciences The Ohio State University 2017 Master's Examination Committee: Dr. Terry Wilson, Advisor Dr. Thomas Darrah Dr. Derek Sawyer Copyrighted by William B. Blocher 2017 Abstract The Terror Rift is the youngest expression of the intraplate West Antarctic Rift System that divides the Antarctic continent. Previous studies of the Terror Rift have ascribed a variety of interpretations to its structure, and especially to the regional anticline known as the Lee Arch, which has been explained as a transtensional flower structure, a rollover anticline, and as the result of magmatic inflation. Fault mapping and the documentation of stratal dips in this study have revealed a Terror Rift structure characterized by north-south folds and a complex distribution of faults. Nearly all faults have normal sense dip separation. A continuous zone of west-dipping faults with relatively high-magnitude normal separation are interpreted to be the border fault system defining the eastern margin of Terror Rift. Reconstruction of listric ramp-flat geometry of this border fault system explains intrarift fold and fault patterns well. Zonation of structures indicates that the listric rift detachment faults are segmented along the rift axis. This new model for rift structure indicates orthogonal rift extension in the ENE- WSW direction, with low strains of <10% calculated from bed-length balancing. i Acknowledgments To my advisor, Dr. -
Neotectonics of Arc-Continent Collision
3. The process of vertically detaching slabs or “slab breakoff” and torn slabs shown by areas of strong slab dip change Penrose is common to many areas of arc-continent collision and shallow subduction, yet the tectonic mechanisms and timing of this process are not well understood. How have Conference recent advances in seismology, tomography, and geodynamic modeling improved our imaging and Report understanding of slab subduction and breakoff, and how do these observed breakoffs affect the pattern of observed earthquakes and slab-related volcanism? Neotectonics of 4. Is coupling of the subducted slab and arc in arc-collision zones any greater than that observed along non- arc-continent collision collisional subduction boundaries and therefore linked to higher levels of larger and more destructive earthquakes? Manizales, Colombia • 17–21 January 2011 How can this improved level of academic understanding of arc collision and shallow subduction at all levels in the crust and upper mantle help improve maps of seismic CONVENERS hazard and be communicated to the public living in broad plate boundary zones? Paul Mann, Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas 5. How can this tectonic and geologic data be used to better 78758-4445 USA; [email protected] inform policy makers and planners about the potential seismic, volcanic, and landslide hazards of those Carlos Vargas, Depto. de Geociencias, Universidad Nacional inhabitants living in arc-continental collisional zones? de Colombia, Bogotá, Colombia; [email protected] Caroline Whitehill, Dept. of Geological Sciences, Central VENUE Washington University, Ellensburg, Washington 98926, USA The Cordillera Central of Colombia, 130 km to the west of Bogotá, was chosen as the meeting venue because it is the setting for many of the tectonic, volcanic, and sedimentary INTRODUCTION processes related to arc-continent collision discussed at the Collisions of arcs with continents are some of the most sig- meeting. -
Neotectonics and Quaternary Geology of the Hunter Mountain Fault Zone and Saline Valley Region, Southeastern California
Geomorphology 42 (2002) 255–278 www.elsevier.com/locate/geomorph Neotectonics and Quaternary geology of the Hunter Mountain fault zone and Saline Valley region, southeastern California John A. Oswald *, Steven G. Wesnousky Center for Neotectonic Studies, Department of Geological Sciences, University of Nevada, Reno, Nevada 89557, USA Received 14 May 1999; received in revised form 11 May 2001; accepted 14 May 2001 Abstract The Hunter Mountain fault zone strikes northwesterly, is right-lateral strike-slip, and kinematically links the northern Panamint Valley fault zone to the southern Saline Valley fault zone. The most recent displacement of the fault is recorded in the offset of Holocene deposits along the entire length of the fault zone. Right-lateral offsets of drainage channels within Grapevine Canyon reach up to 50 to 60 m. Initial incision of the offset channels is interpreted on the basis of geomorphic and climatic considerations to have occurred approximately 15 ka. The 50 to 60 m of offset during 15 ka corresponds to a right-lateral fault slip rate of 3.3–4.0 mm/year within Grapevine Canyon. Further to the north along the Nelson Range front, the fault is composed of two sub-parallel fault strands and the fault begins to show an increased normal component of motion. A channel margin that is incised into a Holocene surface that is between 10 and 128 ka in age is offset 16–20 m, which yields a broad minimum bound on the lateral slip rate of 0.125–2.0 mm/year. The best preserved single-event displacements recorded in Holocene deposits range from 1.5 to 2.5 m.