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Palynology, palynofacies and palaeoenvironments of sedimentary organic matter from Bonyere - 1 Well, Tano basin, western Ghana

100%

Atta-Peters D., Agama C. I., Asiedu D. K., Apesegah E.

International Letters of Natural Sciences

2013

tom 05

Palynofacies analyses from Bonyere Well No. 1 in the Tano basin, western Ghana has revealed five palynofacies associations (I – V) based on the percentage relative abundances of the sedimentary organic matter (SOM). The palynofacies associations reflect deposition in a fluvio-deltaic (oxic) environment, a distal dysoxic-anoxic shelf environment, a proximal dysoxic-suboxic environment, nearshore (oxic) and a fluvio-deltaic/nearshore environment with high oxygen levels and low preservation rates respectively. Based on marker palynomorphs, Campanian – Maastrichtian age has been assigned to sediments within the interval (1800-10 ft) – (90-100 ft), Turonian – Lower Senonian (Santonian) age between (3160-70 ft) – (1980-90 ft) and Aptian age between the interval (8140-50 ft) – (3340-50 ft). The absence of the elater-bearing pollen which are typical Africa-South America (ASA) elements for the Albian – Cenomanian age is indicative of an unconformity between the Aptian and Turonian sediments.

Total aluminium content in the granulometric fraction of soils originating from various geological formations

100%

Brogowski Z., Uziak S., Komornicki T.

Polish Journal of Soil Science

2008

tom 41

nr 1

51-60

The material for this study was obtained from several regions of Poland, from 13 soil profiles of various geneses that include those formed from various rock types. It has been observed that the total aluminium content in the individual granulometric fractions increased as soil particle diameter decreased. Similarly, the share of individual fraction groups in the total aluminium accumulation in the soil mass increased as to particle diameter decreased. The <0.005 mm grains stored a greater share of the total aluminium than indicated by their share of the soil mass, whereas <0.02 mm grains had a smaller share of the aluminium than their share of the soil mass.

Water resistance of the rendzinas structure of different geological formations

100%

Spychalski W., Mocek A., Owczarzak W.

Acta Agrophysica

2000

tom 35

The basic objective of the research was to investigate and determine variations in the physico-chemical properties of the arable layer (Ap) of calcareous soils which belong to the group of lithogenic soils. The above objective was achieved by determining the following physical soil parameters: static and dynamic water resistance of soil aggregates as well as the state of their secondary aggregation following static and dynamic action of water. The above mentioned physico-mechanical properties were determined for wet aggregate models, wet aggregate models subjected to freezing and defreezing and dry "ones", i.e., brought from the appropriate level of moisture to the air-dry state. In order to obtain a comprehensive picture of the properties analysed in the study and their complex evaluation, samples were collected in such a way as to represent the most important and common groups of Rendzinas occurring in Poland. Hence, the material sampled for laboratory analyses developed from various parental rocks.

Ograniczanie wyników

1 Acta Agrophysica

1 International Letters of Natural Sciences

1 Polish Journal of Soil Science

1 Agama C. I.

1 Apesegah E.

1 Asiedu D. K.

1 Atta-Peters D.

1 Brogowski Z.

1 Komornicki T.

1 Mocek A.

1 Owczarzak W.

1 Spychalski W.

1 Uziak S.

1 2013

1 2008

1 2000

Wyniki wyszukiwania

Palynology, palynofacies and palaeoenvironments of sedimentary organic matter from Bonyere - 1 Well, Tano basin, western Ghana

Total aluminium content in the granulometric fraction of soils originating from various geological formations

Water resistance of the rendzinas structure of different geological formations