Maps showing geochemistry of sediment samples from the southern part of the Chandler Lake Quadrangle, Alaska

1993 ◽  
Keyword(s):  
Sediment Samples

Holocene diatom assemblages from Dunderbukhta sediments, West Svalbard

2019 ◽  
pp. 242-245
Author(s):  
Ksenya V. Poleshchuk ◽  
Zinaida V. Pushina ◽  
Sergey R. Verkulich
Keyword(s):  
Environmental Changes ◽  
Ecological Groups ◽  
Diatom Assemblages ◽  
Diatom Analysis ◽  
Diatom Flora ◽  
Sediment Samples ◽  
Ecological Zones ◽  
Middle Holocene ◽  
Temperature Trends

The diatom analysis results of sediment samples from Dunderbukta area (Wedel Jarlsberg Land, West Svalbard) are presented in this paper. The diatom flora consists of four ecological groups, which ratio indicates three ecological zones. These zones show environmental changes of the area in early–middle Holocene that is demonstrating periods of regression and temperature trends.

ANALYSIS OF ACCUMULATION AND DISTRIBUTION OF LEAD IN THE SYSTEM WATER-BOTTOM SEDIMENTS IN THE BACH DANG ESTUARY (VIETNAM)

2017 ◽  
pp. 62-66
Author(s):  
Truong Van Tuan ◽  
Irina Vladimirovna Volkova
Keyword(s):  
Bottom Sediment ◽  
Bottom Sediments ◽  
Water Samples ◽  
Suspended Solids ◽  
Natural Habitat ◽  
Bottom Layer ◽  
Sediment Samples ◽  
Natural Breeding ◽  
System Water ◽  
Water Bottom

Research was held in the estuary of the river Bach Dang (Dongbay community, Rakhtay district, Hai Phong, Vietnam) in June, 2012 - May, 2013. Concentration of lead was studied in water, suspended solids and bottom sediment. Clam beach (natural breeding environment of Meretrix lyrata ) was inspected regularly, every month. Water samples were taken 6 times from the bottom layer 10 cm down the bottom, once per 3 hours in each of 12 investigated zones. Bottom sediment samples were taken at the depth 2 cm. The findings show that lead accumulates mainly in suspended solids (23.3 mg/kg) and in bottom sediment (14.31 mg/kg), in water it is in small quantities (0.003 mg/kg). Analysis of bottom sediment samples taken in different places showed that they have even leadcontent, lead is distributed uniformly, localization of contaminations is not found. The results obtained can be assumed as the basis for investigating lead accumulation and its excretion by clam Meretrix lyrata organisms in the natural habitat.

Analyses of rock and stream-sediment samples from the Taylor Mountains C-8 quadrangle, Alaska

1970 ◽  
Author(s):  
Allen L. Clark ◽  
W.H. Condon ◽  
J.M. Hoare ◽  
D.H. Sorg
Keyword(s):  
Stream Sediment ◽  
Sediment Samples

Analyses of rock and stream-sediment samples from the Craig B-3 quadrangle, Alaska

1970 ◽  
Author(s):  
Allen L. Clark ◽  
Henry C. Berg ◽  
Donald A. Grybeck ◽  
A. Thomas Ovenshine ◽  
Raymond Wehr
Keyword(s):  
Stream Sediment ◽  
Sediment Samples

Analyses of rock and stream-sediment samples from the Ketchikan Quadrangle, southeastern Alaska

1976 ◽  
Author(s):  
Richard D. Koch ◽  
R.L. Elliott ◽  
H.C. Berg ◽  
James G. Smith
Keyword(s):  
Stream Sediment ◽  
Sediment Samples
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