scholarly journals Heavy mineral analyses of the surface Neogene sediments and the cuttings from Higashi Ishinazaka Oil Well.

1967 ◽  
Vol 57 (3) ◽  
pp. 98-110
Author(s):  
Masaharu Watanabe ◽  
Nobuyoshi Ushijima
Keyword(s):  
Heavy Mineral ◽  
Oil Well ◽  
Neogene Sediments ◽  
Mineral Analyses

An Upper Eocene Outlier at St. Ann's Hill, Chertsey

1950 ◽  
Vol 87 (4) ◽  
pp. 279-284
Author(s):  
H. G. Midgley
Keyword(s):  
Heavy Mineral ◽  
Upper Eocene ◽  
Pebble Bed ◽  
Indicator Minerals ◽  
Mineral Analyses

AbstractAn outlier of the Bagshot Series occurs at St. Ann' Hill, Chertsey, where beds of the Bagshot, Bracklesham, and Barton sub-divisions are exposed. The division into these beds by pebble bed junctions is suggested. Heavy mineral analyses using percentages of fresh and abraded grains of three indicator minerals, viz. tourmaline, rutile, and zircon, suggests that the divisions postulated are justified.

scholarly journals Hazardous radioactivity levels and heavy mineral concentrations in beach sediments of Lake Peipsi, northeastern Estonia

Geologos ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 1-12
Author(s):  
Johanna-Iisebel Järvelill ◽  
Rein Koch ◽  
Anto Raukas ◽  
Tiit Vaasma
Keyword(s):  
Mineral Content ◽  
Heavy Mineral ◽  
Western Coast ◽  
Northern Coast ◽  
Quaternary Sediments ◽  
Lake Peipsi ◽  
Beach Sediments ◽  
Mineral Concentrations ◽  
Mineral Analyses ◽  
Radioactivity Levels

Abstract The present study discusses results of heavy mineral analyses and radioactivity of beach sediments of Lake Peipsi. Such analyses are commonly done globally, but had not yet been conducted for the fourth largest lake in Europe. The average heavy mineral content in Lake Peipsi beach sediments along the northern and western coast is higher than usual for Estonian coastal and Quaternary sediments. Concomitantly, elevated radioactivity levels have been measured in several places, with the highest concentrations observed at Alajõe (1885.5 Bq/kg), which is over five times more than the recommended limit. The aim of the present study is to find sites with higher radioactivity levels, because the northern coast of Lake Peipsi is a well-known recreational area.

Recognition of a Cretaceous outlier in northwestern Ontario

1990 ◽  
Vol 27 (2) ◽  
pp. 306-311 ◽  
Author(s):  
Pierre A. Zippi ◽  
Andrew F. Bajc
Keyword(s):  
Heavy Mineral ◽  
Quaternary Sediments ◽  
Northwestern Ontario ◽  
Clastic Sediments ◽  
Angiosperm Pollen ◽  
Mineral Analyses

Borehole F-88-33, located near Rainy River, Ontario, intersected Cretaceous nonmarine clastic sediments. This is the first documented occurrence in Ontario of Cretaceous sediments associated with the western interior. Lithologie and heavy-mineral analyses were used to differentiate this unit from the overlying Quaternary sediments. Seventy-five species of fossil angiosperm pollen, gymnosperm pollen, spores, megaspores, and algal cysts were recovered from borehole F-88-33 and used to date the pre-Quaternary sediments as late Albian to early Cenomanian. The occurrence of these nonmarine sediments in northwestern Ontario helps to better define the limits of Cretaceous sedimentation in the western interior.

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