scholarly journals Uranium geology in the central Baker Lake Basin, District of Keewatin

1979 ◽  
Author(s):  
A R Miller
Keyword(s):  
Lake Basin ◽  
Baker Lake

Alluvial, eolian and lacustrine sedimentology of a Paleoproterozoic half-graben, Baker Lake Basin, Nunavut, Canada

2006 ◽  
Vol 190 (1-4) ◽  
pp. 47-70 ◽  
Author(s):  
Thomas Hadlari ◽  
Robert H. Rainbird ◽  
J. Allan Donaldson
Keyword(s):  
Lake Basin ◽  
Half Graben ◽  
Baker Lake ◽  
Lacustrine Sedimentology

Sm–Nd fluorite dating of Proterozoic low-sulfidation epithermal Au–Ag deposits and U–Pb zircon dating of host rocks at Mallery Lake, Nunavut, Canada

2003 ◽  
Vol 40 (12) ◽  
pp. 1789-1804 ◽  
Author(s):  
William A Turner ◽  
Larry M Heaman ◽  
Robert A Creaser
Keyword(s):  
Linear Trend ◽  
Lake Basin ◽  
Age Difference ◽  
Lake Area ◽  
Epithermal Deposits ◽  
Intimate Association ◽  
Baker Lake ◽  
End Members ◽  
Host Rocks ◽  
Low Sulfidation

The Mallery Lake area contains precious metal-bearing quartz–chalcedony stockworks that are pristine examples of ancient low-sulfidation epithermal deposits. Fluorite extracted from these epithermal deposits define a Sm–Nd errorchron age of 1434 ± 23 Ma mean square of weighted deviates (MSWD) = 4.8. This date is interpreted to have age significance because (1) a simple linear trend does not exist between the 143Nd/144Nd ratios of the fluorite with respect to their 1/Nd concentrations as would be expected for mixing of two geochemical end members; (2) microthermometric studies indicate that the fluorite analysed in this study has an intimate association with a single high-salinity, calcic brinal fluid; and (3) the age determined from seven fluorite samples extracted from a single outcrop location yielded an identical age result (1434 ± 60 Ma; MSWD = 5.5) compared to the fluorite composite. Rhyodacites of the Pitz Formation and syenites from the Nueltin suite (intrusive equivalent to the rhyodacites) are the youngest volcanic–plutonic rocks that are observed in outcrop in the Mallery Lake area, and they were dated by U–Pb zircon analysis at 1760 ± 43 Ma and 1755.4 ± 1.8 Ma, respectively. The ~320 million year age difference between the epithermal deposits and the hosting rhyodacitic flows suggests that the epithermal stockworks may have formed by a regional hydrothermal event unrelated to this earlier Paleoproterozoic volcanic activity. Uranium deposits in the Thelon and Athabasca basins, to the northwest and south of the Baker Lake Basin, were determined to have similar ore emplacement ages with no evident heat source.

Retro-arc extension and continental rifting: a model for the Paleoproterozoic Baker Lake Basin, Nunavut1Geological Survey of Canada Contribution 20100436.

2011 ◽  
Vol 48 (8) ◽  
pp. 1232-1258 ◽  
Author(s):  
T. Hadlari ◽  
R.H. Rainbird
Keyword(s):  
Volcanic Rocks ◽  
Strike Slip ◽  
Superior Province ◽  
Lake Basin ◽  
Tectonic Zone ◽  
Basin Development ◽  
Half Graben ◽  
Baker Lake ◽  
Two Stages ◽  
Back Arc

Within Baker Lake sub-basin, the ca. 1.84–1.78 Ga Baker Sequence formed in two stages. At the start of the first stage, during rift initiation, half-graben were host to siliciclastic alluvial, eolian, and lacustrine deposits and to localized felsic minette volcanics. Back-stepping of facies indicate high accommodation rates and areal expansion, which, combined with extrusion of voluminous minette volcanic rocks, are interpreted to record increased extension and rift climax. Low accommodation post-rift deposits from the second stage of basin development are relatively thin and coeval felsite domes spatially restricted. Volcanic rocks and some siliciclastic units correlate between sub-basins, and hence the interpreted history of Baker Lake sub-basin is extended across greater Baker Lake Basin. This implies that the basin formed in response to regional extension and crustal thinning. The Baker Lake Basin marks the northern extent of a series of basins that trend northeastward along the Snowbird Tectonic Zone, including an inlier of the correlative Martin Group in northern Saskatchewan. The high accommodation first stage of basin development is proposed to have been the result of intra-continental retro-arc extension during ca. 1.85–1.84 Ga formation of the Kisseynew back-arc basin of the Trans-Hudson Orogen. Upon closure of the Kisseynew back-arc basin and collision of the Superior Province with the western Churchill Province, Baker Lake Basin was subject to strike-slip faulting. The second, low accommodation stage of basin development and strike-slip faulting is proposed to record lateral tectonic escape between the Saskatchewan–Manitoba and Baffin Island – Committee Bay foci of the western Churchill – Superior Province collision.

PROBLEMS CAUSED BY SMALL PIG FARM ODOR AROUND THE WESTERN SONGKHLA LAKE BASIN

2017 ◽  
Vol 2 (1) ◽  
pp. 1-13
Author(s):  
Papontee Teeraphan
Keyword(s):  
Air Pollution ◽  
Lake Basin ◽  
Urgent Problem ◽  
The Public ◽  
Pig Farms ◽  
Pig Farm ◽  
The Government ◽  
The Moment ◽  
Source Of Information ◽  
Proper Solutions

Pollution is currently a significant issue arising awareness throughout the world. In Thailand, pollution can often be seen in any part of the country. Air pollution is pointed as an urgent problem. This pollution has not damaged only to human health and lives, it has destroyed environment, and possibly leading to violence. In Phattalung, air pollution is affecting to the residents’ lives. Especially, when the residents who are mostly agriculturists have not managed the waste resulted from the farm. In Phattalung, at the moment, there are many pig farms, big and small. Some of them are only for consuming for a family, some, however, are being consumed for the business which pigs will be later purchased by big business companies. Therefore, concerning pollution, the researcher and the fund giver were keen to focus on the points of the air pollution of the small pig farms. This is because it has been said that those farms have not been aware on the pollution issue caused by the farms. Farm odor is very interesting which can probably lead to following problems. The researcher also hopes that this research can be used as a source of information by the government offices in order to be made even as a policy or a proper legal measurement. As the results, the study shows that, first, more than half of the samples had smelled the farm odor located nearby their communities, though it had not caused many offenses. Second, the majority had decided not to act or response in order to solve the odor problem, but some of them had informed the officers. The proper solutions in reducing offenses caused by pig farm odor were negotiation and mediation. Last, the majority does not perceive about the process under the Public Health Act B.E. 2535.

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