Bailey-1976.Pdf
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Geologic Map of the Long Valley Caldera, Mono-Inyo Craters
DEPARTMENT OF THE INTERIOR TO ACCOMPANY MAP 1-1933 US. GEOLOGICAL SURVEY GEOLOGIC MAP OF LONG VALLEY CALDERA, MONO-INYO CRATERS VOLCANIC CHAIN, AND VICINITY, EASTERN CALIFORNIA By Roy A. Bailey GEOLOGIC SETTING VOLCANISM Long Valley caldera and the Mono-Inyo Craters Long Valley caldera volcanic chain compose a late Tertiary to Quaternary Volcanism in the Long Valley area (Bailey and others, volcanic complex on the west edge of the Basin and 1976; Bailey, 1982b) began about 3.6 Ma with Range Province at the base of the Sierra Nevada frontal widespread eruption of trachybasaltic-trachyandesitic fault escarpment. The caldera, an east-west-elongate, lavas on a moderately well dissected upland surface oval depression 17 by 32 km, is located just northwest (Huber, 1981).Erosional remnants of these mafic lavas of the northern end of the Owens Valley rift and forms are scattered over a 4,000-km2 area extending from the a reentrant or offset in the Sierran escarpment, Adobe Hills (5-10 km notheast of the map area), commonly referred to as the "Mammoth embayment.'? around the periphery of Long Valley caldera, and The Mono-Inyo Craters volcanic chain forms a north- southwestward into the High Sierra. Although these trending zone of volcanic vents extending 45 km from lavas never formed a continuous cover over this region, the west moat of the caldera to Mono Lake. The their wide distribution suggests an extensive mantle prevolcanic basement in the area is mainly Mesozoic source for these initial mafic eruptions. Between 3.0 granitic rock of the Sierra Nevada batholith and and 2.5 Ma quartz-latite domes and flows erupted near Paleozoic metasedimentary and Mesozoic metavolcanic the north and northwest rims of the present caldera, at rocks of the Mount Morrisen, Gull Lake, and Ritter and near Bald Mountain and on San Joaquin Ridge Range roof pendants (map A). -
California Pika Consortium Mono Basin- Bodie Hills Field Trip Sunday, July 31, 2011 – Monday, August 1, 2011
California Pika Consortium Mono Basin- Bodie Hills Field Trip Sunday, July 31, 2011 – Monday, August 1, 2011 Amended with comments and observations in red font after the Field Trip: 13 August 2011 (cim) Field Trip Objectives: Provide a forum for California Pika Consortium (CPC) participants to observe and discuss topics of current interest at key and relevant field sites. In particular, to observe and contrast pika habitat abundance, quality, and connectivity in the Sierra Nevada and Bodie Hills; to visit low-elevation and high-elevation sites typical of the central-eastern Sierra Nevada; to observe and compare anthropogenic habitat (ore dumps) and native talus sites in the Bodie Hills; to discuss the relevance of these observations to climate relationships, talus thermal regimes, dispersal and connectivity (source/sink), population dynamics, and population processes in California and elsewhere in American pika’s range. Agenda Sunday, July 31 (see accompanying Road Log and Maps for specifics) 8:00 am Convene at USFS Mono Basin Scenic Area Visitor Center, consolidate vehicles (don’t forget lunch, snacks, water) 8:15 am Depart Visitor Center for Stops 1-7 Stop 1: Lundy Cyn (short walk) Stop 2: Virginia Lks Cyn Trailhead (short walk) Stop 3: Conway Highlands Overview instead we made a brief stop to “Benjamin Buttes” Stop 4: Bodie Pass – LUNCH (bring your own) Stop 5: Syndicate Mine, Bodie (short walk) Stop 6: Chemung Mine weather did not allow us to visit this site Stop 7: Serrita Mine, New York Hill, Masonic District (short walk) weather did not allow us to visit this site Note: If time gets short, we might forego one or more of the final stops ~ 7pm? Dinner (no host) at Tioga Gas Mart, Tioga Toomey’s Café, 0.25 miles west on SR 120 of junction with US 395. -
Compositional Zoning of the Bishop Tuff
JOURNAL OF PETROLOGY VOLUME 48 NUMBER 5 PAGES 951^999 2007 doi:10.1093/petrology/egm007 Compositional Zoning of the Bishop Tuff WES HILDRETH1* AND COLIN J. N. WILSON2 1US GEOLOGICAL SURVEY, MS-910, MENLO PARK, CA 94025, USA 2SCHOOL OF GEOGRAPHY, GEOLOGY AND ENVIRONMENTAL SCIENCE, UNIVERSITY OF AUCKLAND, PB 92019 AUCKLAND MAIL CENTRE, AUCKLAND 1142, NEW ZEALAND Downloaded from https://academic.oup.com/petrology/article/48/5/951/1472295 by guest on 29 September 2021 RECEIVED JANUARY 7, 2006; ACCEPTED FEBRUARY 13, 2007 ADVANCE ACCESS PUBLICATION MARCH 29, 2007 Compositional data for 4400 pumice clasts, organized according to and the roofward decline in liquidus temperature of the zoned melt, eruptive sequence, crystal content, and texture, provide new perspec- prevented significant crystallization against the roof, consistent with tives on eruption and pre-eruptive evolution of the4600 km3 of zoned dominance of crystal-poor magma early in the eruption and lack of rhyolitic magma ejected as the BishopTuff during formation of Long any roof-rind fragments among the Bishop ejecta, before or after onset Valley caldera. Proportions and compositions of different pumice of caldera collapse. A model of secular incremental zoning is types are given for each ignimbrite package and for the intercalated advanced wherein numerous batches of crystal-poor melt were plinian pumice-fall layers that erupted synchronously. Although released from a mush zone (many kilometers thick) that floored the withdrawal of the zoned magma was less systematic than previously accumulating rhyolitic melt-rich body. Each batch rose to its own realized, the overall sequence displays trends toward greater propor- appropriate level in the melt-buoyancy gradient, which was self- tions of less evolved pumice, more crystals (0Á5^24 wt %), and sustaining against wholesale convective re-homogenization, while higher FeTi-oxide temperatures (714^8188C). -
Part 629 – Glossary of Landform and Geologic Terms
Title 430 – National Soil Survey Handbook Part 629 – Glossary of Landform and Geologic Terms Subpart A – General Information 629.0 Definition and Purpose This glossary provides the NCSS soil survey program, soil scientists, and natural resource specialists with landform, geologic, and related terms and their definitions to— (1) Improve soil landscape description with a standard, single source landform and geologic glossary. (2) Enhance geomorphic content and clarity of soil map unit descriptions by use of accurate, defined terms. (3) Establish consistent geomorphic term usage in soil science and the National Cooperative Soil Survey (NCSS). (4) Provide standard geomorphic definitions for databases and soil survey technical publications. (5) Train soil scientists and related professionals in soils as landscape and geomorphic entities. 629.1 Responsibilities This glossary serves as the official NCSS reference for landform, geologic, and related terms. The staff of the National Soil Survey Center, located in Lincoln, NE, is responsible for maintaining and updating this glossary. Soil Science Division staff and NCSS participants are encouraged to propose additions and changes to the glossary for use in pedon descriptions, soil map unit descriptions, and soil survey publications. The Glossary of Geology (GG, 2005) serves as a major source for many glossary terms. The American Geologic Institute (AGI) granted the USDA Natural Resources Conservation Service (formerly the Soil Conservation Service) permission (in letters dated September 11, 1985, and September 22, 1993) to use existing definitions. Sources of, and modifications to, original definitions are explained immediately below. 629.2 Definitions A. Reference Codes Sources from which definitions were taken, whole or in part, are identified by a code (e.g., GG) following each definition. -
Canadian Volcanoes, Based on Recent Seismic Activity; There Are Over 200 Geological Young Volcanic Centres
Volcanoes of Canada 1 V4 C.J. Hickson and M. Ulmi, Jan. 3, 2006 • Global Volcanism and Plate tectonics Where do volcanoes occur? Driving forces • Volcano chemistry and eruption types • Volcanic Hazards Pyroclastic flows and surges Lava flows Ash fall (tephra) Lahars/Debris Flows Debris Avalanches Volcanic Gases • Anatomy of an Eruption – Mt. St. Helens • Volcanoes of Canada Stikine volcanic belt Presentation Outline Anahim volcanic belt Wells Gray – Clearwater volcanic field 2 Garibaldi volcanic belt • USA volcanoes – Cascade Magmatic Arc V4 Volcanoes in Our Backyard Global Volcanism and Plate tectonics In Canada, British Columbia and Yukon are the host to a vast wealth of volcanic 3 landforms. V4 How many active volcanoes are there on Earth? • Erupting now about 20 • Each year 50-70 • Each decade about 160 • Historical eruptions about 550 Global Volcanism and Plate tectonics • Holocene eruptions (last 10,000 years) about 1500 Although none of Canada’s volcanoes are erupting now, they have been active as recently as a couple of 4 hundred years ago. V4 The Earth’s Beginning Global Volcanism and Plate tectonics 5 V4 The Earth’s Beginning These global forces have created, mountain Global Volcanism and Plate tectonics ranges, continents and oceans. 6 V4 continental crust ic ocean crust mantle Where do volcanoes occur? Global Volcanism and Plate tectonics 7 V4 Driving Forces: Moving Plates Global Volcanism and Plate tectonics 8 V4 Driving Forces: Subduction Global Volcanism and Plate tectonics 9 V4 Driving Forces: Hot Spots Global Volcanism and Plate tectonics 10 V4 Driving Forces: Rifting Global Volcanism and Plate tectonics Ocean plates moving apart create new crust. -
Chapter 4 Alaska's Volcanic Landforms and Features
Chapter 4 Alaska's Volcanic Landforms and Features Resources • Alaska Volcano Observatory website. (Available at http://www.avo.alaska.edu.) • Brantley, S.R., 1999, Volcanoes of the United States: U.S. Geological Survey General Interest Publication. (Available at http://pubs.usgs.gov/gip/volcus/index.html.) • Miller, T.P., McGimsey, R.G., Richter, D.H., Riehle, J.R., Nye, C.J., Yount, M.E., and Dumoulin, J.A., 1998, Catalog of the historically active volcanoes of Alaska: U.S. Geological Survey Open-File Report 98-0582, 104 p. (Also available at http://www.avo.alaska.edu/downloads/classresults.php?citid=645.) • Nye, C.J., and others, 1998, Volcanoes of Alaska: Alaska Division of Geological and Geophysical Surveys Information Circular IC 0038, accessed June 1, 2010, at . PDF Front (6.4 MB) http://www.dggs.dnr.state.ak.us/webpubs/dggs/ic/oversized/ic038_sh001.PDF and . PDF Back (6.6 MB) http://www.dggs.dnr.state.ak.us/webpubs/dggs/ic/oversized/ic038_sh002.PDF. • Smithsonian Institution, [n.d.], Global volcanism program—Augustine: Smithsonian Institution web page, accessed June 1, 2010, at http://www.volcano.si.edu/world/volcano.cfm?vnum=1103-01- &volpage=photos&phoyo=026071. • Tilling, R.I., 1997, Volcanoes—On-line edition: U.S. Geological Survey General Interest Product. (Available at http://pubs.usgs.gov/gip/volc/.) • U.S. Geological Survey, 1997 [2007], Volcanoes teacher’s guide: U.S. Geological Survey website. (Available at http://erg.usgs.gov/isb/pubs/teachers- packets/volcanoes/. • U.S. Geological Survey, 2010, Volcano Hazards Program—USGS photo glossary of volcanic terms: U.S. -
Campi Flegrei Caldera, Somma–Vesuvius Volcano, and Ischia Island) from 20 Years of Continuous GPS Observations (2000–2019)
remote sensing Technical Note The Ground Deformation History of the Neapolitan Volcanic Area (Campi Flegrei Caldera, Somma–Vesuvius Volcano, and Ischia Island) from 20 Years of Continuous GPS Observations (2000–2019) Prospero De Martino 1,2,* , Mario Dolce 1, Giuseppe Brandi 1, Giovanni Scarpato 1 and Umberto Tammaro 1 1 Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli Osservatorio Vesuviano, via Diocleziano 328, 80124 Napoli, Italy; [email protected] (M.D.); [email protected] (G.B.); [email protected] (G.S.); [email protected] (U.T.) 2 Istituto per il Rilevamento Elettromagnetico dell’Ambiente, Consiglio Nazionale delle Ricerche, via Diocleziano 328, 80124 Napoli, Italy * Correspondence: [email protected] Abstract: The Neapolitan volcanic area includes three active and high-risk volcanoes: Campi Flegrei caldera, Somma–Vesuvius, and Ischia island. The Campi Flegrei volcanic area is a typical exam- ple of a resurgent caldera, characterized by intense uplift periods followed by subsidence phases (bradyseism). After about 21 years of subsidence following the 1982–1984 unrest, a new inflation period started in 2005 and, with increasing rates over time, is ongoing. The overall uplift from 2005 to December 2019 is about 65 cm. This paper provides the history of the recent Campi Flegrei caldera Citation: De Martino, P.; Dolce, M.; unrest and an overview of the ground deformation patterns of the Somma–Vesuvius and Ischia vol- Brandi, G.; Scarpato, G.; Tammaro, U. canoes from continuous GPS observations. In the 2000–2019 time span, the GPS time series allowed The Ground Deformation History of the continuous and accurate tracking of ground and seafloor deformation of the whole volcanic area. -
Volcanoes: the Ring of Fire in the Pacific Northwest
Volcanoes: The Ring of Fire in the Pacific Northwest Timeframe Description 1 fifty minute class period In this lesson, students will learn about the geological processes Target Audience that create volcanoes, about specific volcanoes within the Ring of Fire (including classification, types of volcanoes, formation process, Grades 4th- 8th history and characteristics), and about how volcanoes are studied and why. For instance, students will learn about the most active Suggested Materials submarine volcano located 300 miles off the coast of Oregon — Axial • Volcanoe profile cards Seamount. This submarine volcano is home to the first underwater research station called the Cabled Axial Seamount Array, from which researchers stream data and track underwater eruptions via fiber optic cables. Students will learn that researchers also monitor Axial Seamount using research vessels and remote operated vehicles. Objectives Students will: • Synthesize and communicate scientific information about specific volcanoes to fellow students • Will learn about geological processes that form volcanoes on land and underwater • Will explore the different methods researchers employ to study volcanoes and related geological activity Essential Questions What are the different processes that create volcanoes and how/why do researchers study volcanic activity? How, if at all, do submarine volcanoes differ from volcanoes on land? Background Information A volcano occurs at a point where material from the inside of the Earth is escaping to the surface. Volcanoes Contact: usually occur along the fault lines that SMILE Program separate the tectonic plates that make [email protected] up the Earth's crust (the outermost http://smile.oregonstate.edu/ layer of the Earth). Typically (though not always), volcanoes occur at one of two types of fault lines. -
Regional Transportation Plan
MONO COUNTY REGIONAL TRANSPORTATION PLAN Mono County Local Transportation Commission Mono County Community Development Department Town of Mammoth Lakes Community Development Department MONO COUNTY LOCAL TRANSPORTATION COMMISSION COMMISSIONERS Fred Stump, Chair (Mono County) Shields Richardson, Vice-Chair (Mammoth Lakes) Jo Bacon (Mammoth Lakes) Tim Fesko (Mono County) Larry Johnston (Mono County) Sandy Hogan (Mammoth Lakes) STAFF Mono County Scott Burns, LTC Director Gerry Le Francois, Principal Planner Wendy Sugimura, Associate Analyst Jeff Walters, Public Works Director Garrett Higerd, Associate Engineer Courtney Weiche, Associate Planner C.D. Ritter, LTC Secretary Megan Mahaffey, Fiscal Analyst Town of Mammoth Lakes Haislip Hayes, Associate Civil Engineer Jamie Robertson, Assistant Engineer Caltrans District 9 Brent Green, District 9 Director Ryan Dermody, Deputy District 9 Director Planning, Modal Programs, and Local Assistance Denee Alcala, Transportation Planning Branch Supervisor Eastern Sierra Transit Authority (ESTA) John Helm, Executive Director Jill Batchelder, Program Coordinator TABLE OF CONTENTS EXECUTIVE SUMMARY .......................................................................................................................... 1 Transportation Directives .......................................................................................................................... 1 Summary of Needs and Issues .................................................................................................................. -
Subsurface Structure of Long Valley Caldera Imaged with Seismic Scattering and Intrinsic Attenuation J
Subsurface Structure of Long Valley Caldera Imaged With Seismic Scattering and Intrinsic Attenuation J. Prudencio1,2,3, M. Manga1,2, and T. Taira2 1Department of Earth and Planetary Science, University of California, Berkeley, CA, USA, 2Berkeley Seismological Laboratory, University of California, Berkeley, CA, USA, 3Andalusian Institute of Geophysics, University of Granada, Granada, Spain Abstract We image seismic intrinsic ( ) and scattering ( ) attenuations in Long Valley Caldera, California, by analyzing more than 1,700 vertical component waveforms from local earthquakes. Observed energy envelopes are fit to the diffusion model and seismic attenuation images are produced using two‐ dimensional space weighting functions. Low intrinsic and low scattering attenuation anomalies in the center south of the caldera correspond to the location of an earthquake swarm in 2014. We identify high intrinsic and high scattering attenuation anomalies in the fluid‐rich western and eastern areas of the caldera. From a comparison with other geophysical images (magnetotellurics and seismic tomography) we attribute these anomalies to a hydrothermal system (high attenuation). Average to high attenuation values are also observed at the adjacent Mammoth Mountain (southwest of the caldera) and may also have a hydrothermal origin. High intrinsic attenuation at low frequencies to the west of the Hartley Springs Fault may be produced by the magmatic system that produced the Inyo Craters. Seismic attenuation imaging provides insights into subsurface structures that are complementary to velocity and conductivity images. 1 Introduction Long Valley is an ellipsoidal caldera located in eastern California that formed 756 ka (Bailey et al., 1976). Other major geologic structures in the area include ENE‐dipping range‐front normal faults, including the Hartley Springs Fault (HSF) north of the caldera and Hilton Creek Fault (HCF) to the south, and Mammoth Mountain, situated outside the southwest edge of the caldera. -
DAMAGE and STRAIN LOCALIZATION AROUND a PRESSURIZED SHALLOW-LEVEL MAGMA RESERVOIR Jean-Luc Got, David Amitrano, Ioannis Stefanou, Élodie Brothelande, Aline Peltier
DAMAGE AND STRAIN LOCALIZATION AROUND A PRESSURIZED SHALLOW-LEVEL MAGMA RESERVOIR Jean-Luc Got, David Amitrano, Ioannis Stefanou, Élodie Brothelande, Aline Peltier To cite this version: Jean-Luc Got, David Amitrano, Ioannis Stefanou, Élodie Brothelande, Aline Peltier. DAM- AGE AND STRAIN LOCALIZATION AROUND A PRESSURIZED SHALLOW-LEVEL MAGMA RESERVOIR. Journal of Geophysical Research, American Geophysical Union, In press, 10.1029/2018JB016407. hal-02021491 HAL Id: hal-02021491 https://hal-enpc.archives-ouvertes.fr/hal-02021491 Submitted on 16 Feb 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1002/, DAMAGE AND STRAIN LOCALIZATION AROUND A PRESSURIZED SHALLOW-LEVEL MAGMA RESERVOIR Jean-Luc Got,1 David Amitrano,2 Ioannis Stefanou,3 Elodie Brothelande,4 Aline Peltier5 Corresponding author: J.-L. Got, ISTerre, Universit´eSavoie Mont Blanc, 73376, Le Bourget- du-Lac FRANCE. ([email protected]) 1Universit´eSavoie Mont Blanc, Universit´e Grenoble Alpes, CNRS, IRD, IFSTTAR, ISTerre, F-73376 Le Bourget-du-Lac, France 2Universit´eGrenoble Alpes, Universit´e Savoie Mont Blanc, CNRS, IRD, IFSTTAR, ISTerre, F-38406, Saint-Martin d'H´eres, France 3Ecole des Ponts ParisTech, Laboratoire NAVIER, F-75009, Paris, France 4Department of Terrestrial Magnetism, Carnegie Institution for Science, Washington DC, USA D R A F T January 28, 2019, 3:18pm D R A F T X - 2 GOT ET AL.: DAMAGE AND STRAIN LOCALIZATION Abstract. -
Development of a Groundwater Flow Model for the Bishop/Laws Area
DEVELOPMENT OF A GROUNDWATER FLOW MODEL FOR THE BISHOP/LAWS AREA FINAL REPORT FOR LOCAL GROUNDWATER ASSISTANCE GRANT AGREEMENT NO. 4600004129 Robert Harrington, PhD, R.G. INYO COUNTY WATER DEPARTMENT APRIL, 2007 TABLE OF CONTENTS EXECUTIVE SUMMARY ………………………………………. 3 INTRODUCTION ………………………………………………. 5 CONCEPTUAL MODEL ………………………………………… 8 SIMULATION MODEL …………………………………………. 5 PREDICTIVE SIMULATIONS …………………………………. 23 SUMMARY AND CONCLUSIONS ……………………………. 26 REFERENCES …………………………………………………… 28 APPENDIX 1 ……………………………………………………. 51 APPENDIX 2 ……………………………………………………. 54 LIST OF FIGURES Figure 1. Study area location……………………………………………… 30 Figure 2. Geology…………………………………………………………. 31 Figure 3. Hydraulic conductivity distribution…………………………….. 32 Figure 4. Aquifer test locations…………………………………………… 33 Figure 5. Well locations…………………………………………………... 34 Figure 6. Layer 1 hydraulic conductivity zones…………………………... 35 Figure 7. Layer 2 hydraulic conductivity zones………………………….. 36 Figure 8. Layer 3 hydraulic conductivity zones…………………………. 37 Figure 9. Layer 4 hydraulic conductivity zones…………………………. 38 Figure 10. Layer 5 hydraulic conductivity zones………………………… 39 Figure 11. Quaternary faults and horizontal flow barriers………………. 40 Figure 12. Recharge zones……………………………………………….. 41 Figure 13. Evapotranspiration zones……………………………………… 42 Figure 14. Boundary conditions………………………………………….. 43 Figure 15. Observed vs. residuals………………………………………… 44 Figure 16. Distribution of residuals………………………………………. 45 Figure 17. Spatial distribution of residuals………………………………. 46 Figure 18. Drawdown