Heavy mineral analyses of Rhenohercynian graywackes - a contribution to the interpretation of the source areas

2000 ◽  
Vol 151 (1-2) ◽  
pp. 127-170
Author(s):  
Martin Ganssloser
Keyword(s):  
Heavy Mineral ◽  
Source Areas ◽  
Mineral Analyses

scholarly journals Heavy mineral distribution in Weichselian drift successions in eastern Denmark

1981 ◽  
Vol 30 ◽  
pp. 1-10
Author(s):  
Lise Holm
Keyword(s):  
Mineral Content ◽  
Heavy Mineral ◽  
Published Data ◽  
Mineral Distribution ◽  
Source Areas ◽  
Opaque Mineral ◽  
Representative Samples ◽  
Mineral Analyses

The use of heavy mineral content in Weichselian drift units as a stratigraphic tool has been investigated. A total of 26 heavy mineral analyses of representative samples frorn the four Weichselian kineto­stratigraphic units in eastern Denmark are presented with data on both non-opaque and opaque mineral content. The heavy mineral content frorn inferred source areas has been deduced, partly from published data and partly from studies carried out by the author. The data indicate that heavy mineral analyses cannot be used as a general stratigraphic tool. However, the heavy mineral distribution indicates the occurrence of two distinct Weichselian heavy mineral provinces, a northern and a southern. The reasons why clast petrography studies may supply more reliable stratigraphic information are discussed.

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.

Heavy minerals as a guide to turbidite provenance in the Lower Palaeozoic Southern Welsh Basin: a pilot study

1992 ◽  
Vol 129 (5) ◽  
pp. 573-580 ◽  
Author(s):  
A. C. Morton ◽  
J. R. Davies ◽  
R. A. Waters
Keyword(s):  
Pilot Study ◽  
Heavy Mineral ◽  
The Other ◽  
Heavy Minerals ◽  
Mineral Analysis ◽  
Source Areas ◽  
Southern Area ◽  
Distinct Source ◽  
Lower Palaeozoic ◽  
Heavy Mineral Analysis

AbstractA pilot study has demonstrated that heavy mineral analysis is a useful guide to the provenance of Silurian turbidites in the Southern Welsh Basin. The results confirm the sedimentological evidence for two distinct source areas of coarse clastic detritus, one lying to the south and the other to the east. They also provide mineralogical criteria by which the two source areas may be distinguished. The southern area provided material with relatively low mineral diversity, and is characteristic in having low rutile/zircon ratios, whereas the eastern source provided more diverse assemblages, generally with high rutile/zircon ratios. The southern source shows variations in terms of apatite/tourmaline ratio, with the older Aberystwyth Grits Group tending to contain relatively low apatite compared with the younger Cwmystwyth Grits Group (Rhuddnant and Pysgotwr Grits formations). There is evidence for polycyclic material and volcanic detritus in both southerly and easterly derived samples; however, easterly-sourced sandstones apparently tapped a more lithologically-diverse terrain.

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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