scholarly journals Sequence stratigraphy and sedimentology of the Paleoproterozoic Baker Lake Group in the Baker Lake Basin, Thirty Mile Lake, Nunavut

2000 ◽  
Author(s):  
T Hadlari ◽  
R H Rainbird
Keyword(s):  
Sequence Stratigraphy ◽  
Lake Basin ◽  
Baker Lake

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

Characteristics of Sedimentation Evolution Based on the Sequence Stratigraphic Frameworks in Shahezi Formation of Southern Xujiweizi Fault Depression

2014 ◽  
Vol 1010-1012 ◽  
pp. 1359-1364
Author(s):  
Ang Li ◽  
Lai Xing Cai ◽  
Shuang Liu ◽  
Qi Li
Keyword(s):  
Sequence Stratigraphy ◽  
Developmental Stages ◽  
Second Grade ◽  
Lake Basin ◽  
Sequence Stratigraphic ◽  
Sedimentary Evolution ◽  
Stratigraphic Framework ◽  
Stratigraphic Division ◽  
Facies Types ◽  
System Tracts

Many scholars in China introduced the theory of sequence stratigraphy,applying to Chinese continental fault depression lake, they have made a lot of achievements in scientific research. However, there are still a lot of controversy according to the establishment in Shahezi group of sequence stratigraphic framework in Xujiaweizi fault depression.Sequence boundary identification method in this paper is based on the “instruction of Vail’s sequence stratigraphy theory, identification of seismic unconformity, verification by using logging methords”. And, following the principle of isochronous ,sequence stratigraphic framework of this region is established clearly. The southern Xujiaweizi fault depression in Shahezi group is divided into 1 second grade sequence, in the interior distributed SQ1-SQ4 4 third grade sequences from the bottom. Developmental stages at the bottom of SQ1 and the top of SQ4, basin is small and water is shallow. However, Developmental stages in SQ2 and SQ3,water enters the lake basin continuously, formed a sedimentary background of “wide basin and deep water”. In addition, each of the three grade sequence has split structure, the lake transgressive domain and lake regression domain two system tracts. Besides, the reversed order para-sequence sets caused by the lake regression and progradation set on the positive para-sequence sets caused by the lake transgression and retrogradation. On the basis of sequence stratigraphic division and correlation, conbined with the regional construction and the supply of provenance ,the sedimentary sequence framework of evolution characteristics are studied.That fan delta,braided river delta, lacustrine are the main facies types in study area. Characteristics of sedimentary evolution there are like this: the characteristics of sedimentation evolution show framework controls sand, succession of evolution, separated-source sedimentary, contiguously distribution.

Sequence stratigraphy and evolution of the Paleoproterozoic intracontinental Baker Lake and Thelon basins, western Churchill Province, Nunavut, Canada

2003 ◽  
Vol 125 (1-2) ◽  
pp. 21-53 ◽  
Author(s):  
R.H Rainbird ◽  
T Hadlari ◽  
L.B Aspler ◽  
J.A Donaldson ◽  
A.N LeCheminant ◽  
...  
Keyword(s):  
Sequence Stratigraphy ◽  
Baker Lake

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.

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