Proceedings of the Society SPRING MEETINGS of the GSA COUNCIL

Proceedings of the Society

SPRING MEETINGS OF THE GSA COUNCIL The Council of The Geological Society of America met on February 23-24, 1962, and on April 20-21, 1962. Significant actions taken at these meetings include the following: (1) The Council voted to appoint Joe Webb Peoples as a member of the Council until the Annual Meeting in November, to fill the vacancy that exists because of the resignation from the Council of Frederick Betz, Jr. Mr. Peoples has accepted the appointment. (2) The Regular Ticket for Officers and places on the Council to be filled at the Annual Meeting in November is as follows: For President, Harry H. Hess For Vice-President, Francis Birch For Secretary, Joe Webb Peoples* For Treasurer, }. Edward Hoffmeister For Councilors: For 1963, M. King Hubbert (Past President) For 1963-1965, Samuel P. Ellison, Jr. Herbert E. Hawkes, Jr. John Rodgers John T. Rouse (3) The following 31 Members, whose names had been circulated to the Fellows on December 4, 1961, were elected to Fellowship: Adams, William M. Lakeman, Rienk Reesor, John E. Brand, John Paul Lee, Hulbert A. Rogers, John J. W. Byers, Frank M., Jr. Leech, Geoffrey B. Sabins, Floyd F., Jr. Childs, Orlo E. Lemish, John Savage, Carleton N. Decker, Robert W. Maxwell, John A. Shenkel, Claude Wesley, Jr. Dellwig, Louis F. McLaren, Digby J. Smedes, Harry Wynn Eschman, Donald F. Neale, Ernest R. W. Stalker, Archibald M. Freeman, Val L. Nickell, Frank A. Vorhis, Robert Carson Friedman, Irving Norns, Stanley E. Wilson, Harry D. B. Grose, Lucius Trovvbridge Perry, Vincent D. Kaye, Clifford Alan Pollock, Clement P. (4) On the recommendation of the Committee on Membership the Council elected the following persons Members of the Society: Acosta Arteaga, Carlos Eduardo Bell, Richard Thomas Buttner, Peter Joseph Adams, Rodney Dreux Bhattacharji, Somdev Burch, Stephen H. Adams, Samuel S. Blackerby, Bruce Alfred Calvert, Stephen Edward Alexander, Charles S. Bock, Charles Mitchell Calvert, Warren Lytle Anderson, Gerald Edward Bond, Thomas Alden Campbell, A. Richard Angell, Glenn Trygve Borst, Roger Lee Carlson, Paul R. Appleman, Daniel Everett Bradbury, James C. Carver, Robert Elliott Ayrton, William Grey Brew, Douglas Crocker Chapman, Rodger Hale Barnes, Ivan Britt, Terence Le Grand Clark, Armin Lee Barrett, Edward Brown, Delbert Wayne Clemons, Russell Edward Beckman, Walter Arnold, Jr. Brown, Delmer LeRoy Clifton, H. Edward Beitzel, John Edward Brune, Gunnar Cole, J. Glenn * In September the Council will present to the Fellows a proposed change in Bylaws that will redefine the office of Secretary and will separate the two functions of the Secretary of the Council and the Executive Officer of the Headquarters. It will be recommended that the office of Secretary shall be, in general, as now defined in the Bvlaws but shall carry with it no responsibilities for the administration of the Headquarters office; these administrative functions will be the responsibility of an Executive Director, who will be a full-time employee but will not be a member of the Council. P39

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Coleman, James Malcolm Hopkins, Roy Marshall, Jr. Raymond, Richard Howard Cooke, Horace Brooks, Jr. Humphrey, Fred James Reade, Harold Leslie, Jr. Corbett, Marshall Keene Hutchison, David Malcolm Rector, Richard James Cranson, Karen Rodney Jennings, Albert R. Renz(-Indergand), Hans Herman Crary, Albert Paddock Jizba, Zdenek Vaclav Reshkin, Mark Crawford, William James Page Johnson, Alvin C., Jr. Riecken, Charles Christopher Croacker, Marvin C., Jr. Karig, Daniel Edmund Riseman, Louis Dalrymple, Gary Brent Keeler, Charles Martyn Rose, William D., Jr. Danehy, Edward Allen Keller, Daniel James Rostoker, David Darling, Richard Graydon Kelly, John Martin Rutherford, Malcolm J. Davis, James Frazier Kent, Harry Christison Salver, Henry Arthur DeGrosky, Fred J. Kirchner, James Gary Sandvik, Peter O. Denison, Robert Howland Kline, James Edward Schetter, William Cameron Dobbs, Robert Otto Knochenmus, Darwin Dale Schock, Robert Norman Dolan, Homer Kindred Leavitt, Frank Grant Scoates, Reginald Francis Dosch, Earl F. Lebauer, Lawrence Robert Sealy, Brian E. Douglas, Robert Guy Lefebvre, Richard Harold Seely, Donald Randolph Ebbett, Ballard Eugene LeMasurier, Wesley Ernest Sheets, Martin Meredith Emery, Philip Anthony Lobjoit, William Michael Shykind, Edwin B. Eroskay, Salih Okay Londot, Rolland Ray Siebert, Harry Louis Erwin, James Walter Lounsbury, Richard Edwin Sirkin, Leslie A. Ethridge, Frank Guide Lumbers, Sydney Blake Skapinsky, Stanley Alfred Everett, Ardell Gordon Lustig, Lawrence Kenneth Skinner, Brian John Feden, Robert Henry Lyons, Wilfred Alexander Slentz, Loren William Ferguson, Laing Mapel, William Jameson Slipp, Robert Munro Fernow, Donald Lloyd Mayo, Lawrence Ralph Slover, Nancy Lincoln Finlayson, Carroll P. McDowell, Stewart Douglas Smith, Alan Gilbert Foster, Julian Mead McGehee, Richard Vernon Smith, Jan G. Freers, Theodore F. McGregor, Jackie Delaine Smith, Peter H. Frost, John Elliot Mclntyre, David H. Smith, Robert Baer Fulton, Robert J. McMullen, Patrick Joseph Soregaroli, Arthur Earl Gardner, Charles Harwood Melson, William Gerald Soward, Kenneth S. Garlick, George Donald Meyer, George L. Stenstrom, Richard C. Cass, Alfred Allen Milici, Robert Calvin Stephenson, David A. Gibbons, John E., II Miller, Don Eugene Stewart, David Benjamin Gilhs, John William Morse, Steams Anthony Stewart, Lyle White Godfrey, Timothy John Ross Mull, Donald Sherwood Sutcliffe, Horace, Jr. Gold, David Percy Murphy, Daniel Lawson Swe, Wm Gonnason, Walter Lawrence Murray, Frederick Nelson Taylor, James Barton, Jr. Gorman, Donald Robert Muncaster, Neil Kibbe Thorns, John Alroy Gwmn, Vinton E. Mutis-Duplat, Emilio Thrailkill, John Vernon Hale, William Ernest Nayudu, Y. Rammohanroy Totten, Stanley M. Halpern, Martin Nelson, Clifford Melvin, Jr. Urbanec, Don Alan Hamilton, Douglas Holmes Noble, James Eugene Van Altena, Peter James Hamilton, Wylie N. Oakes, Edward L. Van Atta, Robert O. Haney, Warren Dale Oaks, Robert Quincy, Jr. Vedder, John G. Hanson, Henry W. A., Ill Odom, Ira Edgar Vehrs, Robert Alan Harris, William H. Ogier, Stephen H. Wadsworth, William Bingham Hart, Richard Royce Orr, Harold D. Waldrop, Henry A. Hawkins, William Maxwell Osborne, David Herbert Walker, Kenneth Ridley Hedberg, Ronald Murray Pessagno, Emile Anthony, Jr. Waltz, James Patterson, II Hendry, Charles Walter, Jr. Polhemus, Robert Benjamin Watkins, F. A., Jr. Henry, Vernon James Pollack, Gerald Douglas Watkins, J. Lloyd Herdendorf, Charles Edward Potter, Noel, Jr. Wayland, Russell G. Heubusch, Carol A. Pushkar, Paul D. Wehrman, Ken C. Heylmun, Edgar Baldwin Ragle, Richard Harrison Wertz, Jacques Bernard

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West, Lawrence James Williams, Roger Bennett Yon, James William, Jr. Weyl, Peter Klaus Wilson, Edward N. Youash, Younathan Yousif White, Bert Lee Winfrey, Walter Michael, Jr. Zantop, Half Whitlow, Jesse William Wingard, Norman Zurflueh, Ernst Gottfried Widmier, John Michael Woodward, Lee A. Williams, James Jerome Wvlie, Ernest Truman (5) The Council voted to elect no Correspondents this year. (6) The Committee on Projects had considered 77 applications for grants, requesting a total of $94,425. The amount budgeted for grants was $25,000. On recommendation of the Committee, the Council approved 41 grants totaling $30,040. The following grants were approved: Name Subject Amount Upton, Brian G. J. Petrological-geochemical investigation of alkaline rocks, % 800 California Institute of Technology south Greenland Potter, Donald B. Stratigraphic and structural study of area within Taconic $ 550 Hamilton College region of eastern New York State Williams, Thomas E. Study of Stratigraphic position of five key Wolfcampian $ 500 Southern Methodist University fusulines, West Texas Cook, E. F. Field and petrographic study of volcanic rocks of Hiko, $ 800 University of Idaho Pahranagat and Delamar Ranges, Nevada Welby, Charles W. Stratigraphy of Chazyan Group, Taconic region, New York $ 550 Rensselaer Polytechnic Institute and Vermont Lowell, Wayne R. Field study, petrography, and ages of lava flows in southwest $ 700 Indiana University Montana Bird, John M. Stratigraphic and structural study of quadrangle in Taconic $ 800 State University of'New Yorl{ region, New York Barshad, Isaac Rate of weathering as measured by soil formation on volcanic $1200 University of California at deposits dated by Carbon 14 Berkeley Motts, Ward S. Field and laboratory investigation (petrographic, X-ray and f 800 University of Massachusetts DTA) of carbonate variations in a Permian bed, Carlsbad, New Mexico Theokritoff, George Regional Stratigraphic study of the northern part of the $ 700 Red Bank., N. J. Appalachian geosyncline in Vermont and Quebec Garlick, George D. Study of oxygen isotopes in coexisting pegmatitic and hydro- $ 700 California Institute of thermal minerals from Boulder Batholith, and Coeur d'Alene Technology mining districts Woodrow, Donald L. Stratigraphy and paleoecology of some Upper Devonian University of Rochester rocks in central Pennsylvania Ratcliffe, Nicholas M. Structural and petrographic study of Taconic Lower Cam- Pennsylvania State University brian and Ordovician metasedimentary rocks, southwest Massachusetts Hawkins, James W., Jr. Structure and petrography of northwestern Okanogan $ 875 University of Washington Range, Washington Anderson, Jay E. Structure and petrography of Tertiary alkalic volcanic and $ 575 University of Texas associated sedimentary rocks, Davis Mtns., west Texas Morales, Gustavo, A. Stratigraphic micropaleontology of Cretaceous Tertiary $ 520 University of Missouri Difunta Group, Parras Basin, northeastern Mexico

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Name Subject Amount Surdara, Ronald C. Mineral zoning in thick metavolcanic pile, Vancouver $ 600 University of California at Island, B. C. Los Angeles Stuart-Alexander, Desiree E. Structural petrology of Calaveras and Milton formations, $ 400 Stanford University Bowman Lake area, Sierra Nevada Tyler, John H. Fauna, petrology, and structure of a Devonian bioherm, $ 600 University of Michigan north Michigan Johnson, Arvid M. Field study of debris flows, Avawatz Mtns., Death Valley $1200 Pennsylvania State University region Schmus, Randall Field study and collection of Huronian rocks, Ontario, for $ 700 University of California at isotopic age determinations Los Angeles Lynts, George W. Foraminiferal ecology of Florida Bay f 800 University of Wisconsin Holdaway, Michael J. Chemical analyses of 10 intensively studied amphiboles $ 450 University of California at Berkeley Adey, Walter H. Studv of living corallines, Gulf of Maine $3000 University of Michigan Schmincke, Hans-Ulrich Investigation of sedimentary rocks interbedded with vol- $1000 Johns Hopkins University canics of south-central Washington and south Washington Sellars, Robert T., Jr. Field study of complex area in Ouachita Mtns., Polk County, $ 220 Tulane University Arkansas Schultz, Gerald E. Stratigraphy and vertebrate paleontology of some Pleisto- $ 400 University of Michigan cene sink hole collapse basin deposits, southwestern Kansas Blake, Milton C. Structure and petrology of low-grade metamorphic rocks $ 800 Stanford University (Franciscan?), Yolla Bolly quadrangle, California Coast Ranges M'Gonigle, John W. Structure of a thrust-belt area, southwestern Montana $ 520 Pennsylvania State University Derby, James R. Paleontology and stratigraphy of the Upper Cambrian Noli- 5 750 Virginia Polytechnic Institute chucky formation, Virginia French, Bevan M. Field study of metamorphosed carbonate iron formation of $ 850 The Johns Hof/fins University Mesabi Range, Minnesota, with experimental study of sta- bility relations of siderite and siderite + quartz, etc. Maxwell, Dwight T. Investigation of layer-lattice minerals in Precambrian Belt $ 650 Montana State University metasediments Glenn, Jerry L. Quaternary history of Willamette Valley and associated $ 650 Oregon State University sediments Gremillion, Louis R. Origin of the clay mineral attapulgite Florida State University Susuki, Takeo Stratigraphic investigation of type locality in Sonora, Mexico, $ 500 University of California at of Middle Cambrian tnlobite Sonoraspis Los Angeles Stoever, Edward C., Jr. Faulting marginal to the Canon City embayment, Colorado $1000 University of Oklahoma

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Name Subject Amount Mozola, Andrew J. Mapping of bedrock topography below drift to determine $ 500 Wayne State University pre-glacial drainage, southeastern Michigan Blackerbv, Bruce A. Chemical analyses of carefully selected volcanic rocks, Santa $ 780 University of California at Monica Mtns., California Los Angeles Morton, Douglas M. Study of mode of emplacement of parts of southern California $ 840 University of California bathohth at Los Angeles Enos, Paul P. Stratigraphy and sedimentary features of Ordovician Nor- $ 400 Yale University manskill rocks, Gaspe Peninsula LeMasurier, Wesley E. Investigation of alkaline volcanic rocks, north-central Nevada $ 400 Stanford University (7) On recommendation of the Committee on Publications, the Council voted to establish a group of Associate Editors to assist in the critical-reading stage of manuscript processing, and to make recommenda- tions to the Editor on the suitability of manuscripts for publication. Selection of appropriate Associate Editors will be made by the Editor in consultation with the Committee on Publications, and will be based on both the geographic and subject-matter aspects of the manuscripts. The group will be appointed by the President for a term of three years, and the initial appointments will be staggered to provide rotation of the members. The size of the group will be somewhere between 15 and 30. It is expected that the appointments will be made during the early summer. (8) The Council approved a budget of $497,496 for the year 1962. In November the Fellowship voted to change the fiscal year to coincide with the calendar year, and this budget will be the operating budget for the present calendar and fiscal year. By a ruling of the Council in 1960, the budget of one year must not exceed the income of the previous year. The amount of f 497,496 represents the income for calendar year 1961. In addition to the regular operating budget, there is an amount of $62,000 for the Henry R. Aldrich Publication Fund and $14,700 for special items not chargeable to the regular budget. (9) The Council named the following as recipients of awards: Penrose Medalist. The Council elected Alfred Sherwood Romer as the thirty-third recipient of the Penrose Medal. Doctor Romer is Professor of Zoology and Curator of Vertebrate Paleontology at Harvard Uni- versity. He was born in 1896 and received a Ph.D. from Columbia University and honorary Sc.D. degrees from Harvard University, Amherst College, Dartmouth College, and the University of Buffalo. Doctor Romer's chief fields of specialization are Vertebrate Paleontology and Comparative Anatomy and upper Paleozoic and lower Mesozoic stratigraphy. Doctor Romer is the author of approximately 130 contributions to vertebrate paleontology and related topics. These range in subject matter from vertebrate origins to man and in time from Ordovician to Pleistocene. The main body of his original work is concerned with the origin of man and the earlier evolution of the tetrapods (Devonian to Triassic). In the field of stratigraphy he has contributed greatly toward unraveling the faunal succession in the continental Permian of Texas and m the continental Triassic of Argentina. Doctor Romer is an inspiring teacher and has imparted his knowledge and enthusiasm directly to the generations of students that have sat under him at Chicago and at Harvard. He has reached a much wider circle through a series of remarkable texts: Vertebrate Paleontology; The Vertebrate Body; and Man and the Vertebrates. Arthur L. Day Medal. Hatten Schuyler Yoder, Jr., Petrologist at the Geophysical Laboratory, Carnegie Institution of Washington, was selected as the recipient of the Arthur L. Day Medal for 1962. Doctor Yoder was born in 1922 and received a Ph.D. from the Massachusetts Institute of Technology in Petrology. During World War II, Doctor Yoder served in the U.S. Navy Reserve on active duty as Aerologist. Since 1948, he has been a Petrologist at the Geophysical Laboratory, Carnegie Institution of Washington. Doctor Yoder has provided an experimental basis for the interpretation of metamorphic facies by studies of silicate systems with water as one of the components. He has designed and used apparatus for obtaining simultaneous controlled application of very high temperatures and pressures. This has permitted investigation of diopside under conditions probably prevalent at the base of the crust.

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58TH ANNUAL MEETING OF THE CORDILLERAN SECTION University of Southern California, Los Angeles, California, April 16-18, 1962 The business meeting was held Wednesday noon, April 18, with Chairman James A. Noble presiding. The minutes of the 57th annual meeting held at San Diego State College were read and approved. Konrad Krauskopf announced for M. King Hubbert that Frederick Betz Jr., Secretary of the Society, had resigned and that Miss Agnes Creagh is Acting Secretary. The chair then announced the selected candidates of the Nominating Committee (E. Fred Davis, G. Donald Eberlem, Vincent P. Gianella). The selected candidates were: Chairman: Konrad B. Krauskopf Vice-Chairman: Ward C. Smith Secretary: Richard V. Fisher No other nominations were made, and the above slate was elected. Joseph Gregory invited the Cordilleran Section to meet at University of California at Berkeley on April 8-10, 1963, an invitation which was accepted. Howard Coombs invited the Society to meet in Seattle the Spring of 1964. This also was accepted. Lloyd Staples moved a vote of appreciation to the University of Southern California and its geology staff for the excellent meeting. The motion was seconded and carried. Chairman Noble moved that the Secretary write a letter to Ex-Secretary V. L. VanderHoof wishing him recovery from his recent illness, and giving the Section's sincerest regrets over the fire loss at the Santa Barbara Museum of Natural History, of which Van is Director. The meeting was then adjourned. The Annual Dinner held Tuesday evening, April 17, at the Town and Gown foyer, was arranged by the Branner Club. After a short Branner Club business meeting, the audience was treated to a thought- provoking talk by J. Hoover Mackin entitled The scientific versus the engineering method in geologic investigation. Mackin summarized his views on the relative merits of qualitative and quantitative methods in geology. There were approximately 350 registrants at the meeting. The scientific program is listed on the following pages. RICHARD V. FISHER, Secretary Cordilleran Section

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Scientific Sessions

General Session

1. Address of welcome: NORMAN TOPPING, President, University of Southern California 2. Introduction of Officers of the participating societies 3. General announcements

Geomorphology

1. LAWRENCE MAYO AND TROY L. PEWE: Ablation and net total radiation, Gulkana Glacier, Alaska (Read by Title) 2. DONALD L. LAMAR* AND J. DOYNE SARTOR: Relationship between geology and blowholes in the Wupatki-Flagstajf area, Arizona (15 minutes) 3. WILLIAM B. BULL: Tectonic history as related to terraces and alluvial-fan segments in west Fresno County, California (20 minutes) 4. CLYDE WAHRHAFTIG: Origin of stepped topography of the west-central Sierra Nevada, California (20 minutes)

Paleontology

1. B. W. CARSS AND R. L. LANGENHEIM, JR.*: Cincinnatian conodonts and brachiopods from theEly Springs Dolomite, Arrow Canyon Range, Clark^ County, Nevada (10 minutes) 2. J. WYATT DURHAM: Echinoid Scutellaster in the Pacific Coast Cenozoic (10 minutes) 3. ORVILLE L. BANDY: Foraminiferal trends associated with deep-water sands (20 minutes) 4. COPELAND MACCHNTOCK : Reclassification of gastropod Proscutum Fischer based on muscle scars and shell structure (15 minutes)

Mineralogy and Petrology

1. D. O. EMERSON: Oribicular and banded structures in diorite near Fisher Lake, Placer County, California (10 minutes) 2. A. A. LOOMIS: Intrusive rocl^s of the Fallen Leaf La/(e quadrangle, Sierra Nevada, Cali- fornia (20 minutes) 3. A. K. BAIRD, D. B. MC!NTYRE*, AND E. E. WELDAY: Chemical composition of a granite pluton (20 minutes)

' Speaker

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4. M. J. HIBBARD: Simultaneous magmatic crystallization of plagioclase and potassium feld- sparinparphyriticquartzmonzonite,NorthernOl{anoganRange, Washington (15 minutes) 5. R. C. SPEED: Humboldt gabbroic complex, Nevada (20 minutes) 6. R. S. DIETZ: Vredefort Ring-Bushveld impact event and lunar maria (15 minutes) 7. R. B. FORBES: Ultrabasic inclusions in basaltic roc\s, Hut Point Peninsula, Ross Island, Antarctica (20 minutes)

Seismology

1. THOMAS TURCOTTE* AND PERRY BYERLY: Sequence of small earthquakes 2. JOSEPH W. BERG*, JR., AND CHARLES D. BAKER: Oregon earthquakes, 1841 through 1958 3. DON TOCHER: Case histories of some aftershoc\ sequences 4. J.P.EATON: Earthquakes of'the 1959-1960 eruption oj' Kilauea 5. JOHN M. NORDQUIST* AND JOHN K. GARDNER: Use of an electronic digital computer for routine location of local earthquakes 6. JACK OLIVER: World-wide storm ofmicroseisms with periods of about 27 seconds 7. L. M. MURPHY: World-wide seismograph standardization program

Seismology Project Gnome Symposium

Engineering Geology

1. JAMES E. SLOSSON* AND RICHARD RASKOFF: Wave erosion, an engineering geology problem (15 minutes) 2. CHARLES E. PRICE: Water-well drilling practice in south-central Nevada (20 minutes) 3. PHILIP J. WEST: Landslide activity associated with leakage from hydroelectric power tunnel No. 2 near Big Cree\, California (15 minutes) 4. A. L. O'NEILL AND R. G. NUTTING*: Materials exploration for Oroville dam (20 minutes) 5. R. E. SKJEI, L. L. TABOR, F. R. CONWELL, AND E. A. DANEHY*: Engineering geology of the Stanford Linear Electron Accelerator (15 minutes)

: Speaker

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Geomorphology

1. ROBERT P. SHARP* AND CLARENCE R. ALLEN: Measurements of marginal slip, Blue Glacier, Washington (20 minutes) 2. JACQUES B. WERTZ: Patterns in arroyos (15 minutes) 3. J. E. WEIR, JR.: Large wind-ripple marks near Coyote Lake (dry), California (15 minutes) 4. GEORGE D. ROBERTS: Need for more geological information on alluvial fans (10 minutes)

Mineralogy and Petrology

1. D. M. RAGAN* AND NOEL HORLOCKER: Preliminary restudy of the Totatlanika schist in the northern Alaska Range (20 minutes) 2. ANNA HIETANEN: Scapolite in the Belt Series northwest of the Idaho batholith (15 minutes) 3. P. H. REITAN : Enigma of heat ofmetamorphism: a contribution to its solution (20 minutes) 4. H. D. PILKINGTON* AND R. L. DuBois: Petrography and structure of the southern Santa Catalina Mountains, Arizona (15 minutes) 5. H. R. BLANK: Basement rocks of the Koettlitz-Blue glacier region, McMurdo Sound, Antarctica (10 minutes) 6. R. L. DuBois: Some magnetic properties of a massive hematite body (15 minutes) 7. R. L. DuBois AND W. W. CAREY*: Roc^ magnetism: a study of a ring-dike, Buell Park, Arizona (15 minutes)

Seismology

1. ARI BEN-MENAHEM* AND ARMANDO CISTERNAS: Radiation of seismic waves from a pressurized spherical cavity in an elastic half-space 2. ]. H. HEALY*, S. W. STEWART, AND W. H. JACKSON: Crustal studies in the western cor- dillera 3. EDUARD BERG, BOB HAMILTON*, AND ALAN RYALL: Travel times and crustal structure from blast near Salinas, California 4. J. W. C. SHERWOOD AND T. W. SPENCER*: Signal-to-noise ratio and spectra of explosion- generated Rayleigh waves 5. TOSIMATU MATUMOTO: Synthetic initial displacement radiated from a spherical origin 6. EDGAR ALVIN KRAUT: Lamb's problem for a transversely isotropic elastic half space 1. ARI BEN-MENAHEM* AND M. NAFI TOKSOZ: Comparative study of source mechanism from surface waves of nuclear explosions and earthquakes

* Speaker

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Stratigraphy and Sedimentation

1. HARRY E. WHEELER AND V. STANDISH MALLORY: Regional Tertiary sequences in the Pacific Northwest (Read by Title) 2. W. L. PRATT: Glauconite from the sea floor of central and southern California (15 minutes) 3. R. L. LANGENHEIM, JR.*, AND CHARLES COLLINSON: Upper Devonian Crystal Pass Lime- stone of southern Nevada (15 minutes) 4. VERNON E. McMATn: Paleozoic stratigraphy of the Taylorsville area, northern Sierra Nevada, California (15 minutes) 5. RICHARD J. PROCTOR* AND THEODORE DOWNS: Stratigraphy of a new formation contain- ing early Pliocene vertebrates at Lake Mathews, near Riverside, California (15 minutes)

Areal and Structural Geology

1. THOMAS W. DIBBLEE, JR.: Structure of eastern San Gabriel Mountains and Cajon Pass area, southern California (20 minutes) 2. ARDEN L. ALBEE* AND MARVIN A. LANPHERE: Distribution of earlier and later Pre- cambnan rocks of the central Panamint Range, California (15 minutes) 3. CHARLES H. THORMAN: Mesozoic regional metamorphism and thrusting in Paleozoic rocks of the Wood Hills and northern Pequop Mountains, Elkp Countv, Nevada (20 minutes) 4. HAROLD J. BISSELL: Progress of geologic mapping in Goshute Mountains and Toana Range, Elkp County, Nevada (15 minutes) 5. DONALD C. NOBLE: Geology of the Mesozoic rocks in the southern part of the Pine Nut Range, Douglas County, Nevada (20 minutes)

Engineering Geology

1. J. S. BADER: Effect of faulting in alluvium on the occurrence, movement, and quality oj ground water in the Twentynine Palms area, California (20 minutes) 2. C. MICHAEL SCULLIN: Engineering geological investigations in the City ofGlendale, Cali- fornia (20 minutes) 3. NICOLA P. PROKOPOVICH: Hydrocompaction of soils along the San Luis Canal alignment, western Fresno County, California (20 minutes) 4. F. BEACH LEIGHTON: Concentration of epigene slope failures, northwestern Puente Hills, California (15 minutes) 5. DAVID G CAMPBELL: Geology and its application to engineering of the Round Butte hydroelectric development, Deschutes River, Oregon (20 minutes)

: Speaker

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Paleontology

1. JOHANNA M. RESIG* AND STANLEY WIMBERLY: Relationships between arenaceous Foram- inifera and sediments on the southern California mainland shelf (15 minutes) 2. YORK T. MANDRA: Comparison of fossil silicojlagellates: California and Maryland (20 minutes) 3. ROBERT E. ARNAL* AND J. T. CONOMOS : Sedimentary and foraminiferal aspects of southern San Francisco Bay, California (20 minutes) 4. S. DAVID WEBB: Osteology q/"Camelops (15 minutes) 5. W. B. N. BERRY* AND A. J. BOUCOT: Great Basin Silurian correlations (20 minutes) 6. ORVILLE L. BANDY: Dominant paralic Foraminifera of southern California and the Gulf of California (15 minutes)

Mineralogy and Petrology

1. R. L. HAY: Zeolitic diagenesis in the John Day Formation of Oregon (20 minutes) 2. H. R. BLANK: Ignimbrite vent in the Bull Valley district, Utah (10 minutes) 3. WARREN HAMILTON: Island Parl^ Caldera of eastern Idaho (15 minutes) 4 J. H. STEWART* AND J. P. ALBERS : Volcanic center in the Silver Pea\ Range, Esmeralda County, Nevada (20 minutes) 5. P. W. BIRKELAND: Pleistocene volcanism and deformation north ofLafe Tahoe, California (20 minutes) 6. M. C. GARDNER: Cenozoic volcanism in the High Cascade and Modoc Plateau provinces and adjacent areas, northeast California (15 minutes)

Seismology

1. J. S. STEINHART*, A. RODRIGUEZ B., AND T. ASADA: Near earthquakes and crustal structure in southern Peru 2. FRANK PRESS AND SHAWN BIEHLER*: P wave anomalies in California as an indication of crustal structure 3. SHELTON ALEXANDER: Further study of phase velocity dispersion across the continental boundary of southern California 4. WILLIAM STAUDER, S. J., OTTO NUTTLI, T. V. McEviLLY*, AND W. J. HANNON, JR.: Phase velocities of crustal Raykigh waves in the central United States 5. JAMES BRUNE* AND JAMES DORMAN: Seismic waves and the structure of the crust and mantle in the Canadian Shield 6. JAMES DORMAN* AND JAMES BRUNE: Structural interpretation of surface wave dispersion data and the structure of the Canadian Shield 7. L. KNOPOFF*, W. L. PILANT, AND F. SCHWAB: Scattering of surf ace waves by fluctuations in crustal thickness

Geochemistry and Geochronology

1. C. E. ROBERSON: Carbonate equilibria in waters from thermal and nonthermal springs (15 minutes) 2. M. A. LANPHERE* AND G. J. WASSERBURG: Some ages in the Precambrian of Arizona, Nevada, and Utah (20 minutes) * Speaker

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3. J. R. ODEKIRK AND J. A. WHELAN*: Lead-alpha age determinations of Jive Utah rocks (10 minutes) 4. JONATHAN BUSHEE* (San Diego Undergraduate Research Team 1960-1961): Lead-alpha ages for zircons from batholithic and pre-batholithic rocks, San Diego and Orange counties, California (20 minutes) 5. MARK DcLisLE* (San Diego Undergraduate Research Team 1961-1962): Lead reten- tion of zircons under conditions of dynamothermal contact metamorphism, White Moun- tains, California (20 minutes) 6. L. T. SILVER* AND C. R. McKiNNEv: U-Pb isotopic age studies of a Precambrian granite, Marble Mountains, San Bernardino County, California (15 minutes)

Stratigraphy and Sedimentation

1. BRUCE O. NOLF: Triassic megabreccias, Wallowa Mountains, northeastern Oregon (Read by title) 2. DONALD M. BLUE: Stratigraphy of the Pilot Mountains, Box Elder and Tooele Counties, Utah, and Elkp County, Nevada (20 minutes) 3. DAVID L. JONES : Stratigraphy of Cretaceous rocks of the upper Chitina Valley (15 minutes) 4. EDWARD M. MACK.EVETT, JR. *, AND M. C. BLAKE, JR. : Preliminary report on Jurassic stratigraphy in the McCarthy C-5 quadrangle, Alaska (15 minutes) 5. DONALD G. METZGER: Basin sediments near Cibola, Arizona (15 minutes)

Structural Geology

1. PETER MISCH: Unusual imbrication patterns displayed by pre-Devonian crystallines and Upper Paleozoic rocks below Mount Shuksan overthrust in Mount Larrabee (Red Moun- tain)—Tomyhoi Peak_ area of northwestern Cascades, Whatcom County, Washington (20 minutes) 2. GERALD M. MILLER* AND PETER MISCH: Post Paleocene- Pre Middle Eocene angular unconformity at the western front of the northern Cascades, northeast of Bellingham, Whatcom County, Washington (20 minutes) 3. FRANK C. ARMSTRONG: Indirect dating of the Paris thrust fault of southeastern Idaho (15 minutes) 4. ROBERT A. LONEY: Superposed folding in the Pybus-Gambier area, Admiralty Island, Alaska (20 minutes) 5. FRANCIS W. CHRISTIANSEN: Triradial, biradial, orthogonic, and chevron to arcuate fold and fracture patterns in layered rocks (15 minutes) 6. WILLIAM R. DICKINSON: Brecciated serpentine on Table Mountain in central California Coast Ranges (20 minutes)

Seismology

1. FRANK PRESS: Study of some diagnostic aids for distinguishing explosions and earthquakes 2. JOHN DsNoYER AND HENRY POLLACK*: Measurements of the velocity ofcrac^ propagation in glass plates 3. WILLIAM STAUDER*, S. J., AND AUGUSTIN UDIAS, S. J.: S-wave studies of Aleutian Island earthquakes] * Speaker t No abstract available

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4. D. E. WILLIS : Effect of ripple firing on the spectra of quarry shots 5. KEICHI KASAHARA: Radiation mode of S-waves from a deep-focus earthquake as derived from observations 6. PHILIP L. JACKSON: Envelope coincidence method of signal enhancement] 7. P. M. LAVIN* AND B. F. HOWELL, JR.: Model studies of first-motion patterns of P around different force systems

Ore Deposits

1. DOXALD M. BLUE: Ore deposits of the Lucin mining district, Box Elder County, Utah, and Elkp County, Utah (10 minutes) 2. J. HOOVER MACKIN* AND BATES McK.EE: Gaines of SiOz. AfaOs, and MgO in replace- ment of limestone by iron ore in the Iron Springs district, Utah (15 minutes) 3. J. R. EVANS: Xenotime mineralization in the southern Music Valley area, Riverside County, California (20 minutes) 4. W. R. ANDERSON, B. STRINGHAM* AND J. A. WHELAN: Secondary phosphates in the Bingham Coppermine, Utah (15 minutes) 5. MIXG-SHAN SUN: Nature of some chrysocolla of New Mexico and adjacent areas (15 minutes) 6. E. A. NOBLE: Suggested origin of lead and zinc deposits of the Mississippi Valley type (10 minutes)

Pleistocene Geology

1. DONAL M. RAG AN: Glaciation in the Hamilton quadrangle, northwestern Washington (Read by Title) 2. ROBERT D. MILLER* AND DWIGHT R. CRANDELL: Glaciation of the upper Nisqually River valley, Washington (15 minutes) 3. DWIGHT R. CRANDELL: Glaciation of the southwestern Olympic Peninsula, Washington (15 minutes) 4. DON J. EASTERBROOK: Vashon glaciation and late Wisconsin relative sea-level changes in the northern part of the Puget Lowland, Washington (20 minutes) 5. AUSTIN LONG* AND PAUL E. DAMON: Recent chronology of Lalfe Cochise, Arizona: Pre- liminary results (20 minutes) 6. ROLAND VON HUENE* AND JAMES B. RIDLON: Pleistocene Basin and Range deposition in the Coso Mountains, southeastern California (15 minutes)

Structural Geology

1. WILLIAM H. TAUBENECK: Wallowa Mountain uplift, northeastern Oregon (Read by title) 2. ROBERT S. DIETZ: Actualistic concept of geosynclines and mountain building (20 minutes) 3. DONALD T. SECOR, JR. : Structure of the central Spring Mountains, Nevada (20 minutes) 4. RICHARD L. NIELSEN: Right lateral stride-slip faulting in west-central Nevada (20 minutes) 5. LEE A. WOODWARD: Structure and stratigraphy of the central northern Egan Range between Hercules Gap and Steptoe, Nevada (20 minutes) 6. LEVI F. NOBLE, LAUREN A. WRIGHT*, ANDBENNIE W. TROXEL: Fault pattern of the southern Death Valley region, eastern California (15 minutes) * Speaker

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Seismology

1. D. K. CHOWDHURY AND PETER DEHLINGER*: Investigations of elastic-wave propagation along layers in two-dimensional models 2. M. NAFI TOKSOZ* AND DON L. ANDERSON: Two-dimensional model seismology with directional velocities—theory and experiment 3. DAVID G. HARKRIDER: Excitation functions for surface waves using a matrix formulation 4. L. E. ALSOP: Numerical calculation of spheroidal oscillations of the earth 5. FREEMAN GILBERT*, STANLEY J. LASTER, MILO M. BACKUS, AND RICHARD SCHELL: Observation of pulses on an interface

* Speaker

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