Results 21 to 30 of about 1,739 (59)

The Anthropocene and the Technogene: stratigraphic temporal implications of the geological action of humankind [PDF]

, 2014
During the last years some original ideas concerning the geochronologic implications of human geological activities have been proposed, such as the Technogene and Anthropocene concepts as new geological periods. The essential aspects of the issue are the
Peloggia, Alex Ubiratan Goossens, Oliveira, Antonio Manoel dos Santos   +1 more
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Associated Placers, Inc.

, 1941
ASSOCIATED PLACERS, INC. Horse Prairie District. Beaverhead County. Minerals Yearbook 1941. Page 374. Operated dry-land dredge on Horse Prairie and Jeff Davis Creeks.https://digitalcommons.mtech.edu/minerals_yearbook_all/1034/thumbnail ...
WPA
core   +1 more source

Criteria for Determining the Genesis of Placers and Their Different Sources Based on the Morphological Features of Placer Gold

, 2021
Based on the identified typomorphic features of placer gold, a set of determined morphogenetic criteria is proposed to identify the genesis of placer gold content and different sources in the platform areas, which allow more correctly selecting search ...
Zinaida Nikiforova
core   +1 more source

French Creek Placers

, 1941
FRENCH CREEK PLACERS Aregenta District. Beaverhead County. Minerals Yearbook 1941. Page 374.
WPA
core   +1 more source

Oregon's gold placers

, 1957
This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Title from PDF cover (viewed on May 2, 2016)."1957, (Second ...

core  

Fairplay Placers, Inc.

, 1939
FAIRPLAY PLACERS, INC. (A.W. MYLROIE) Confederate Gulch District. Broadwater County. Minerals Yearbook 1939. Page 373. Operated a dragline and washer. Testing ground.
WPA
core   +1 more source

Arizona Gold Placers and Placering

, 1932
The first publication of the Arizona Bureau of Mines on Arizona Gold Placers was written by Mr. M. A. Allen, then geologist with the Bureau, and appeared in 1922 as Bulletin 118.
Wilson, E.D., Tenney, J.B.
core   +5 more sources

Twin Lakes and Lake Creek placers, Lake County, Colorado

, 2022
Mine report no. 1228.Handwritten signatures.Typescript (carbon copy).Twin Lakes placers -- The Lake Creek placers -- Lake Creek, Hill's store, Colorado -- The Cache Creek placer, Chaffee County ...
Marks, John H. (John Henry)
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Timberlake placers, Moffat County, Colorado

, 2022
Mine report no. 1255.Typescript (carbon copy).Includes assay report, handwritten report, map and newspaper clipping.Report for Burton Cohn on the Timberlake placers, Moffat county, Colorado, 1936 -- Preliminary report: The Timberlake or Fourmile placer ...
Marks, John H. (John Henry), Gooldy, James   +1 more
core  

Peculiarities of formation and mineralogical composition of Perha tinstone-columbite placers [PDF]

, 2010
Розглянуті геологічні і палеогеоморфологічні умови утворення колумбітових розсипів Пержанського рудного району. Визначені джерела розподілу рудних мінералів у розсипах та особливості їх мінералогічного складу. Показані перспективи подальшого вивчення і
Романюк, Л.С.
core   +2 more sources