Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1462.

OP-332. R. Van Waasbergen*, W. V. Sliter, Isabella Premoli Silva*, R. A. Duncan*, J. H. Natland* and E. L. Winterer*. Radiometric and paleontological age constraints on the birth and death of NW Pacific Early Cretaceous atolls [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1661.

OP-333. R. B. VanArsdale*, G. G. Scherer*, E. S. Schweig, III*, L. R. Kanter*, R. A. Williams, K. M. Shedlock and K. W. King. ARKANSAS. Seismic reflection survey of Crowley's Ridge, Arkansas [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1435.

OP-334. R. B. Waitt, C. A. Gardner, R. J. Janda, T. P. Miller, J. J. Major, T. C. Pierson, C. A. Neal and J. W. Vallance. ALASKA. Unusual ice conglomerate emplaced during the 15 December 1989 eruption of Redoubt Volcano, Alaska [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1706.

OP-335. R. B. Waitt, J. J. Major, T. P. Miller and D. C. Trabant. ALASKA. Effects of eruptions of Redoubt Volcano, Alaska between December 1989 and April 1990 on Drift Glacier [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1705. OP-336. D. J. Wald*, D. V. Helmberger* and T. H. Heaton. CALIFORNIA. Analysis of the 1989 Loma Prieta earthquake from the inversion of local strong motion and broadband teleseismic data [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1454.

OP-337. R. J. Walker*, L. M. Echeverria*, S. B. Shirey* and M. F. Horan. Re-Os isotopic constraints on the origin of volcanic rocks, Gorgona Island, Colombia [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1696.

OP-338. P. L. Ward and A. M. Pitt. ALASKA. A P and S travel-time delay under Trident Volcano, Katmai National Park, Alaska [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1691.

OP-339. C. S. Weaver and S. R. Walter. Influence of backarc tectonics on the seismicity distribution of the Cascade Range [abstr.] Seismological Research Letters, in 83rd annual meeting of the Seismological Society of America. v. 59, no. 1, March 1988. p. 17.

OP-340. L. G. Wennerberg, J. D. Bicknell and D. Garcia*. Local differences in ground motion near damaged structures; aftershock recordings of the 16 July 1990 Philippine earthquake [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1442. OP-341. G. F. Wieczorek, R. Arboleda* and B. Tubianosa*. Landsliding and liquefaction in the July 16, 1990, Luzon, Philippines, earthquake [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1442.

OP-350. S. S. Wu and A. E. Howington-Kraus. Triangulation using synthetic aperture radar images [abstr.] NASA Technical Memorandum, in Reports of planetary geology and geophysics program; 1990. (J. M. Boyce). 4300, June 1991. p. 489.

OP-351. S. S. Wu, A. E. Howington-Kraus and K. K. Albin. Color-coded global topographic maps of Mars [abstr.] NASA Technical Memorandum, in Reports of planetary geology and geophysics program; 1990. (J. M. Boyce). 4300, June 1991. p. 503-505.

OP-352. S. S. Wu, A. E. Howington-Kraus and K. K. Albin. Mars elevation distribution [abstr.] NASA Technical Memorandum, in Reports of planetary geology and geophysics program; 1990. (J. M. Boyce). 4300, June 1991. p. 506-507.

OP-353. S. S. Wu, Raymond Jordan, P. A. Garcia and K. K. Albin. Completion of compilation of the 1:2,000,000-scale topographic map series of Mars [abstr.] NASA Technical Memorandum, in Reports of planetary geology and geophysics program; 1990. (J. M. Boyce). 4300, June 1991. p. 508.

OP-354. J. C. Wynn. Induced polarization used in titanium exploration in onshore and offshore environments [abstr.] Geophysics, in Abstracts of papers presented at the 56th annual international SEG meeting. v. 52, no. 3, March 1987. p. 394.

OP-355. Max Wyss* and R. Y. Koyanagi. HAWAII. Magnitudes of historic Hawaiian earthquakes estimated from macroseismic maps [abstr.] Seismological Research Letters, in 83rd annual meeting of the Seismological Society of America. v. 59, no. 1, March 1988. p. 18.

OP-356. X. Yang*, P. M. Davis*, P. T. Delaney and A. T. Okamura. HAWAII. Magma storage and dike intrusion from geodetic data and seismicity on Kilauea Volcano; 1970-1983 [abstr.] Eos, Transactions, American Geophysical Union, in AGU 1990 fall meeting. v. 71, no. 43, October 23, 1990. p. 1694.

OP-357. T. S. Yelin. OREGON. Tectonic setting, relocation and revised focal mechanism of the 6 November 1962 Portland, Oregon earthquake [abstr.] Seismological Research Letters, in 83rd annual meeting of the Seismological Society of America. v. 59, no. 1, March 1988. p. 17.

OP-358. R. A. Zielinski and J. K. Otton. NEVADA. Geologic controls on uranium in water and surficial sediments, Lake Tahoe area, Nevada [abstr.] Abstracts with Programs - Geological Society of America, in Geological Society of America, 1989 annual meeting. (R. F. Dymek, chairperson and others). v. 21, no. 6, 1989. P. 146.

Standard topographic maps are usually published in 7.5- and 15-minute quadrangles. The map location is given by the latitude and longitude of the southeast (lower right) corner of the quadrangle. Location, scale, and contour interval are indicated for each map in the computer-generated list below. The date of the map is shown in the column following the map name; a second date indicates the latest revision. Provisional maps are essentially standard topographic maps published with modified map finishing and field and compilation procedures. Photorevised maps have not been field checked. Series converted maps include 15-minute maps compiled from 7.5-minute maps, and 7.5-minute maps compiled from 7.5-minute source materials initially published as 15-minute maps. Orthophotomaps are multicolor photographic-image maps in standard quadrangle format with added topographic detail. Orthophotoquads are monocolor or multicolor photographic-image maps in standard quadrangle format without topographic detail. Most monocolor orthophotoquads are not being published but are available in the form of diazo or photographic prints. The Index to Orthophotoquad Mapping showing information about available published and unpublished orthophotoquads is free on request from the distribution centers listed at the back of the Monthly

List. County maps are multicolor topographic maps at scales of 1:50,000 or 1:100,000. Some counties require more than one map and the cost is $4 per map. Level of content may vary between States, and State sales indexes should be consulted for a more detailed description of each map. Planimetric maps at intermediate scales of 1:50,000 or 1:100,000 are available in both quadrangle and county format for selected areas of the country. Most of these maps are not being published but are available in other forms. Copies of the drawings which comprise these maps are available either as a composite of all features or separately by feature. An Index to Intermediate-Scale Series Mapping showing information about available published and unpublished intermediate-scale maps is free on request from the distribution centers listed at the back of the Monthly List.

Standard quadrangle maps and orthophotoquads are sold for $2.50 per copy. Discount rates and ordering instructions are given at the back of the Monthly List. State topographic indexes and catalogs are free on request. Each State index shows the areas mapped and the catalog contains ordering information and forms, along with a list of local dealers who sell topographic maps.

INDEX TO DIGITAL LINE GRAPHS:

(DEM) DATA. JANUARY 1, 1992.

36

INDEX

acoustical surveys see under geophysical surveys under Gulf of Mexico; Pacific Ocean; Puerto Rico

aerial photography see remote sensing

aeromagnetic maps

Aeromagnetic map of Morton and vicinity, Washington OF 92-0251

aeromagnetic surveys see magnetic surveys Africa see Kenya

agriculture see under land use

air see atmosphere

Alabama-geochronology

Carboniferous: Preliminary 40Ar-39 Ar themmochronology of the southernmost exposed Appalachians, Alabama; implications for Alleghanian tectonometamorphism and the suture OP-317

Alabama-stratigraphy

Cretaceous: Sedimentary cycles and sequence stratigraphy in the eastern Gulf of Mexico coastal plain C 1059

Paleogene: Lithologic changes in fluvial to marine depositional systems in Paleogene strata of Georgia and Alabama C 1059 Alabama-structural geology tectonics: Preliminary 40Ar-39Ar themochronology of the southernmost exposed Appalachians, Alabama; implications for Al

leghanian tectonometamorphism and the suture OP-317

Alaska-earthquakes

seismic moment: Accelerating moment release in the Alaska subduction zone; precursor to a great thrust earthquake? OP-92

Alaska-economic geology

energy sources: Thermal maturity mapping in Alaska YR

lead-zinc deposits: Analytical results of soil, stream sediment, panned concentrate, and water samples from the Lik Deposit, northwestem Brooks Range, Alaska OF 92-0015-A

Analytical results of soil, stream sediment, panned concentrate, and water samples from the Lik Deposit, northwestern Brooks Range, Alaska OF 92-0015-B

silver ores: Analytical results of soil, stream sediment, panned concentrate, and water samples from the Lik Deposit, northwestern Brooks Range, Alaska OF 92-0015-A

Analytical results of soil, stream sediment, panned concentrate, and water samples from the Lik Deposit, northwestern Brooks Range, Alaska OF 92-0015-B

Alaska-environmental geology ecology: Benthic foraminifers from Prince William Sound, Alaska; one year after the Exxon Valdez oil spill OF 91-0631

pollution: Conclusions and recommendations;

1989 Prince William Sound oil spill, the following year OF 91-0631

Sediment of Prince William Sound, beach to deep fjord floor, a year after the Exxon Valdez oil spill OF 91-0631

Tracking hydrocarbons from the Exxon Valdez oil spill in beach, shallow-water, and deepwater sediment of Prince William Sound, Alaska OF 91-0631

Alaska-geochemistry

trace elements: Geochemistry and mineralogy of fumarole deposits, Valley of Ten Thousand Smokes (VTTS), Alaska; major element mass exchange and trace element enrichment/depletion systematics OP-257

Alaska-geochronology

Cretaceous: Age of tephra beds at the Ocean
Point dinosaur locality, North Slope, Alaska,
based on K-Ar and
Ar analyses
B 1990-C

40

Ar/39

Evidence for two phases of uplift, during the Albian and Paleocene, in the Atigun Pass and Killik River regions, northern Brooks Range, Alaska OP-248

Proterozoic: Pb isotopic ratios in late Proterozoic and Devonian granite rocks of the Brooks Range, Alaska OP-63

Tertiary: Apatite fission track evidence for Tertiary uplift in the Doonerak Fenster region, central Brooks Range, Alaska OP-249

Cretaceous: Maps showing fossil localities and checklists of Jurassic and Cretaceous macrofauna of western Alaska OF 91-0629 Holocene: Stratigraphy of proximal pyroclastic deposits from the eruption of Redoubt Volcano, Alaska, December 14, 1989-April 21, 1990 OP-138

Jurassic: Maps showing fossil localities and checklists of Jurassic and Cretaceous macrofauna of western Alaska OF 91-0629 maps: Maps showing fossil localities and checklists of Jurassic and Cretaceous macrofauna of westem Alaska OF 91-0629

Paleozoic: Lower and middle Paleozoic metacarbonate rocks of the Snowden Mountain area, central Brooks Range, northern Alaska OP-125

Geophysical expedition to Novarupta II OP-128

Redoubt: A combination video/35 mm timelapse system for recording visual changes of the lava dome at Redoubt Volcano OP-123

Acquisition, processing, storage, and display of seismic data during the 1989-90 eruption of Redoubt Volcano, Alaska OP-203

Applications of a real-time seismic amplitude measurement system (RSAM) during the 19891990 eruption of Redoubt Volcano, Alaska OP-233

Channel instability induced by debris flows and floods during the 1989-90 eruptions of Redoubt Volcano, Alaska OP-201

Characteristics of proximal pyroclastic deposits from the eruption of Redoubt Volcano, Alaska, January 2, 1990-April 21, 1990 OP235

Earthquake families and their implications for the eruption dynamics of Redoubt Volcano, Alaska; December 13, 1989 to January 3, 1990 OP-158

Effects of eruptions of Redoubt Volcano, Alaska between December 1989 and April 1990 on Drift Glacier OP-335

Emission rates of sulfur dioxide and carbon dioxide from Redoubt Volcano, Alaska during the 1989-1990 eruptions OP-101

Episodic dome growth and destruction, Redoubt Volcano, 1989-90 OP-219