2 edition of portable refraction seismograph survey of gold placer areas near Nome, Alaska found in the catalog.
portable refraction seismograph survey of gold placer areas near Nome, Alaska
H. Gary Greene
|Statement||by H. Gary Greene.|
|Series||Contributions to economic geology, U.S. Geological Survey bulletin -- 1312-B|
|Contributions||Geological Survey (U.S.)|
|LC Classifications||QE75 .B9 no. 1312-B|
|The Physical Object|
|Pagination||iv, 29 p. :|
|Number of Pages||29|
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A PORTABLE REFRACTION SEISMOGRAPH SURVEY OF GOLD PLACER AREAS NEAR NOME, ALASKA By H. GARY GREENE the summer of a seismic-refraction study was made of the beach and tundra gold-placer areas near Nome, Alaska; a small lightweight portable seismograph system was used.
Geophone configuration and type of sound sourceCited by: 5. Get this from a library. A portable refraction seismograph survey of gold placer areas near Nome, Alaska: a seismic refraction investigation on the beach and tundra areas near Nome, Alaska, with emphasis on placer gold exploration.
[H G Greene; Geological Survey (U.S.)] -- "A seismic refraction investigation on the beach and tundra areas near Nome, Alaska, with emphasis on placer gold. Placer deposits are economically valuable mineral accumulations that have been formed principally by mechanical Alaska book or near-surface processes.
Littoral placers contain minerals of relatively low whole-rock abundance that, due to their physical and/or chemical stability and the operation of fluvial, marine and/or aeolian processes, Alaska book been Cited by: 5.
Stanford Libraries' official online search tool for books, media, journals, databases, government documents and portable refraction seismograph survey of gold placer areas near Nome. Re: depth to bedrock - in my dreams «Reply #15 on: FebruAM» a person could check around Calgary Alberta for information on these types of setups, and information on this subject as Calgary is the seismic capital of Canada, just a thought.
A Portable Refraction Seismograph Survey of Gold Placer Areas near Nome, Alaska (United States Geological Survey Bulletin B). Greene, H.
Gary. Published. Greene, H. A portable refraction seismograph survey of gold Alaska book areas near Nome, Alaska. U.S. Geol. Surv Sheth, M. A heavy mineral study of Pleistocene and Holocene sediments near Nome, Alaska. Masters thesis, San Scholl D.W. () Tectonic Setting and Cenozoic Sedimentary History of the Bering Sea.
In: Herman Y. (eds Cited by: Geographic coordinates:(WGS84) Elevation: Relative position: 9 MILES S OF COLORADO RIVER, NEAR GARNET MTN. DGGS PR Multiple glaciation and gold-placer formation, Valdez Creek Valley, western Clearwater Mountains, Alaska.
Sheet 1, Photointerpretation of former glacial limits and associated landforms related to areas of significant Gold-Placer potential in the Alaska book.
PA High-resolution seismic survey of an offshore area near Nome, Alaska,Geological Survey Professional Paper, PA. [United State Geological Survey.] on. Hydrologic andWater toQuality Investigations Related the Occurrence of PlacerMining in Interior Alaska Summers, 1.
INTRODUCTION This report presents and discusses data collected and analyzed by the Alaska Division of Geological and Geophysical Surveys (DGGS) and assisting agenciesand individuals as part of the interagency Placer Mining Research Projectduring the and summer.
Gold placer deposits in northcentral Alaska: An inventory of the gold placer mines, prospects, and deposits located within Ambler River, Hughes, Ruby, Shungnak, and Survey Pass quadrangles [Richard L Lampright] on *FREE* shipping on qualifying offers.
Gold Placer Deposits In NorthCentral Alaska contains an inventory of gold placer mines, prospects and deposits located within Author: Richard L Lampright.
Placer gold sampling in and near the Chugach National Forest, Alaska. Authors: Hoekzema, R.B., and Fechner, S.A. Publication Date: ; Publisher: U.S. Bureau of Mines. Seismic refraction is a geophysical principle (see refraction) governed by Snell's in the fields of engineering geology, geotechnical engineering and exploration geophysics, seismic refraction traverses (seismic lines) are performed using a seismograph(s) and/or geophone(s), in an array and an energy source.
The seismic refraction method utilizes the refraction of seismic waves on. SEISMIC Portable refraction seismograph survey of gold placer areas near Nome SURVEY Methodology The seismic refraction (SR) method provides information regarding the seismic velocity structure of the subsurface.
An impulsive (mechanical or explosive) source is used to produce compressional (P) portable refraction seismograph survey of gold placer areas near Nome seismic energy. The P File Size: 13KB.
Seismic refraction investigates the subsurface by generating arrival time and offset distance information to determine the path and velocity of the elastic disturbance in the ground.
The disturbance is created by shot, hammer, weight drop, or some other comparable method for. Report describing a high-sensitivity aerial gamma-ray spectrometer and magnetometer survey conducted in the lower Yukon River and Kuskokwim River areas of southwestern Alaska (covering fifteen quadrangles) and in the middle Yukon River valley in Interior Alaska (covering eight quadrangles) as part of the National Uranium Resource Evaluation (NURE) Program of the United States Energy Research.
United States Coast & Geodetic Survey petty officer rates. The eagle rests atop a half globe and some of the specialty marks are distinct and unlike those of the U.S. Coast Guard and the U.S. Navy while others are the same except they are in red for dark navy blue, khaki and white.
eagle on half globe are black on white as well as on khaki/5(5). Refraction Survey Method A refraction survey uses refracted (or head) waves to deduce velocities of the layered-earth model. So-called first arrival information is used for the analysis (Fig.
1).More generalized methods based on the turning waves from an arbitrary velocity. DESCRIPTION OF SURVEY Two Bison refraction systems were used to collect the data, the and the B, six and one channel models respectively. Both systems use a sledge hammer and metal plate as a source.
An iner tia. switch near the hammer head initiates recording by a standard industry geophone when the hammer strikes the plate on the Author: R.D. Luzitano. As one of the state’s leading geological services providers, GeoTek Alaska provides a wide range of vital services to government agencies, businesses, and property owners throughout the region.
Their team of experienced geo scientists uses cutting-edge seismic refraction equipment, so they provide fast reports without sacrificing quality. Seismic refraction surveys have been obtained sporadically in tunnels in zeolitized tuff at the Nevada Test Site since the late 's.
Commencing in and continuing to date ().extensive measurements of shear- and compressional-wave velocities have been made in five tunnel complexes in Rainier and Aqueduct Mesas and in one tunnel complex in Shoshone Mountain.
GEOVision routinely uses high resolution seismic methods for a wide variety of applications. Recently, we have been successfuly using High Resolution Shear Wave Seismic for imaging buried pipelines in urban areas.
This method uses the innovative MicroVib portable shear wave vibrator. Seismic refraction records from a survey in the Gulf of Alaska Open-File Report By: Kenneth C. Core, Robert E. Mattick, and K.C. Bayer. The US Coast Guard and Geodetic Survey Seismological and Geomagnetic House, also known as the Forest Service House, is a historic house at Seward Street in Sitka, Alaska.
It is a two story wood frame structure, resting on a concrete foundation, with a gambrel roof. Survey Setup. A seismic refraction survey was carried out. The survey consisted of a series of shots fired from each end of the line of geophones, that ran North-South.
Forward shots were fired from the North end of the line and reverse shots were fired from the South end. A channel seismograph was used in data acquistion.
Seismic Refraction Mapping of Stratigraphy, Bedrock, Groundwater, and Faults Seismic refraction is used for investigating subsurface ground conditions utilizing surface-sourced seismic waves. The acquired data is computer processed and interpreted to produce models of the seismic velocity and layer thickness of the subsurface ground structure.
Seismic refraction analyses of the same MASW seismic survey data can be used to determine compression wave velocities (Vp).
The travel-time/distance from the first-arrival shock source graph has different slopes depending upon the velocity that the shock wave travels through the ground. Note that refraction will not work if a “slow” layer. A Seismic Refraction Survey of the Widmerpool Gulf: British Geological Survey, Global Seismology, Global Seismology Research Group Reports Author: J.
Evans: Contributor: British Geological Survey. Global Seismology Research Group: Published: Export Citation: BiBTeX EndNote RefMan.
Final Technical Report to the U.S. Geological survey under the National Earthquake Hazards Reduction Program (NEHRP) Award No. G By w. John Nelson, Principal Investigator and F. Brett Denny, Joseph A. Devera, Leon R. Follmer, John M. Masters, and John sexton Janu Dictionary of Alaska Place Names, U.S.
Geological Survey Professional Paper(supervised production and contributor) Surveying and Mapping Sciences Want in Persons Entering the Job Market, and How They See Those Needs Changing in the Near Future," with R.
Moynihan, Surveying and Mapping., Vol. 48 Dec.Refraction survey over a proposed waste disposal site (Lankston, ), results Velocity variation Depth variation (note vertical exaggeration) Two changes in velocity File Size: 4MB.
The best trench assays were g/t gold over m and g/t gold over m, while the highest grade drill intersection was g/t gold and t g/t silver across m. Follow-up trenching in returned only minor amounts of sulphides but produced assays up to g/t gold with g/t silver over m.
from narrow calcite veins. SEISMIC REFRACTION SURVEYS For: Geologic, Geotechnical, Environmental, and Engineering Applications - ABOUT THE COMPANY - Terra Geosciences is an independently-owned firm that provides various earth science related consulting services.
This firm was established in by Donn C. Schwartzkopf, and is based in the City of Loma Linda, California. Size: KB. GEOLOGICAL SURVEY 30's 30' BY THE Attachment EM SCALE I 1 KENAI (CO SE QUADRANGLE ALASKA-KENAI PENINSULA BOROUGH COO-SCALE SERIES (TOPOGRAPH(C) 97 O o 4 PROVISIONAL MAP Produced trom drawlngs.
Raid che&. KENAI (C-3) SE, ALASKA S METERS FAIRBAr«S. sans REsr(N. ALASKA EARTHQUAKE CENTER EarthScope facilities are funded by the National Science Foundation and are being operated and maintained as a collaborative effort by UNAVCO Inc. and the Incorporated Research Institutions for Seismology (IRIS) with contributions from the US Geological Survey and several other international organizations.
Gold, silver and copper occur in quartz-sulphide veins which cut Upper Proterozoic to Lower Cambrian calcareous argillite near the margin of a small mid-Cretaceous syenite stock.
The occurrences appears to stratle the boundary between the Upper Proterozoic to Lower Cambrian Hyland assemblage and the Lower Cambrian, Gull Lake assemblage.
Taking all the various factors into account, I am bullish on the copper price in the near term. A general range of $$ per pound in will provide high margins for producers and stimulate mine production, scrap sales, and capital finance requirements for mine development.
Prices near the recent. The survey began inin Florida, completed in Michigan in and is known as the High-Precision Transcontinental Traverse (TCT). It has an accuracy of one part in a million or better, the most accurate survey ever made using conventional methods.
About 2, stations were included in mile traverse that passed through 44 States. Geology and plate-tectonic development: 4. Quaternary deformation: 5. Seismicity, 6. Earthquake history, 7. Present-day crustal movements and the mechanics of cyclic deformation: 8.
Lithospheric structure and tectonics from seismic-refraction and other data: 9. Crustal and lithospheric structure from gravity and magnetic.
Chroston, P. N., Brooks, M. & Sellevoll, M.A.: A seismic refraction pdf across the Seiland igneous pdf, northern Norway. Norsk Geologisk Tidsskrift, Vol. 56, pp. Oslo A seismic refraction line across the Seiland igneous province suggests that the igneous complex is not rooted locally in the underlying mantle, but isFile Size: KB.The southern California Permanent GPS Geodetic Array (PGGA) was established in across the Pacific-North America download pdf boundary to continuously monitor crustal deformation.
We describe the development of the array and the time series of daily positions estimated for its first 10 sites in the month period between the J (M w =7.Created Date: 1/28/ PM.