Object's details: Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses

Provider:Platforma Otwartych Czasopism Naukowych UAM

Description

Title:
Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses
Creator:
Chima, Priscilla;
Baiyegunhi, Christopher
Description:
The Stormberg Group comprises the Molteno, Elliot and Clarens formations and is one of four stratigraphical groups that make up the Karoo Supergroup in South Africa. The group is the highest unit in the Karoo Basin, representing the final phase of preserved sedimentation. The major problem with the Stromberg Group is that the mode of transport, hy- drodynamic energy conditions and depositional environment are still poorly understood. For the present paper, grain size and lithofacies studies on selected sandstones from the Molteno, Elliot and Clarens formations were performed  so as to elucidate their textural characteristics, depositional processes, sedimentation mechanisms and hydrodynamic energy conditions and to discriminate different depositional environments. The statistical parameters of grain size distribution (mean grain size, standard deviation, skewness and kurtosis) show that the sandstones are predominantly unimodal, fine grained, moderately well sorted, mesokurtic and near symmetrical. The bivariate diagrams of the afore- mentioned statistical parameters demonstrate that river and aeolian dune had the greatest impact on the depositional environments. Likewise, the C-M pattern (Passega diagram) shows that the sandstones were mostly deposited through tractive current process. Furthermore, the C-M diagram reveals the prevalence of rolling, suspension and graded sus- pension modes of sediment transportation. Seventeen sedimentary lithofacies were identified and grouped into seven lithofacies associations. These lithofacies associations indicate braided channel, overbank and swamp deposits for the Molteno Formation, alluvial fan/floodplain and playa deposits for the Elliot Formation and aeolian deposits for the Clarens Formation.
Object availability:
free access
Rights:
Prawa autorskie (c) 2022 Priscilla Chima, Christopher Baiyegunhi;
https://creativecommons.org/licenses/by-nc-nd/3.0/
Date:
2022.05.14
Type:
info:eu-repo/semantics/article;
info:eu-repo/semantics/publishedVersion;
Research papers
Language:
English
Source:
Geologos; Vol. 28 No. 1 (2022); 61-78;
Geologos; Tom 28 Nr 1 (2022); 61-78;
2080-6574;
1426-8981
Format:
application/pdf
Publisher:
Adam Mickiewicz University Poznan
Relation: http://pressto.amu.edu.pl/index.php/logos/article/view/35897/30828
Subject:
Grain size distribution;
textural parameters;
lithofacies classification;
hydrodynamic energy conditions;
Triassic;
Jurassic
Identifier: http://pressto.amu.edu.pl/index.php/logos/article/view/35897
Data provider:
Platforma Otwartych Czasopism Naukowych UAM

Similar objects

Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses

Creator:Chima, Priscilla | Baiyegunhi, Christopher

Date:2022.05.14

Type:other

Alternative interpretations of grain-size data from Quaternary deposits

Creator:Mycielska-Dowgiałło, Elżbieta | Ludwikowska-Kędzia, Małgorzata

Date:2012.01.02

Type:other

Adjustment coefficients for planimetric analysis of the granulometry of coarse-grained sediments

Creator:Pisarska-Jamroży, Małgorzata | Kossowski, Tomasz | Jamroży, Jerzy

Date:2012.01.02

Type:other

A preliminary description of a new mammal from the Upper Triassic of South Africa

Creator:Crompton, A. W.

Date:1964.12.31 | 1964

Type:other

Heavy-mineral, mineral-chemical and zircon-age constraints on the provenance of Triassic sandstones from the Devon coast, southern Britain

Creator:Morton, Andrew | Hounslow, Mark W. | Frei, Dirk

Date:2013.05.31

Type:other

Long-term shoreline shifts on continental blocks during the Bajocian: an updated interpretation based on synthetic stratigraphical and palaeogeographical developments on regional scales

Creator:Ruban, Dmitry A. | Sallam, Emad S.

Date:2019.04.01

Type:other

New palynological data for Toarcian (Lower Jurassic) deep-marine sandstones of the Western Caucasus, southwestern Russia

Date:2018.08.01

Type:other

Jurassic-Cracow flint in the Neolithic of the Chełmno Land

Creator:Małecka-Kukawka, Jolanta

Date:2023.06.27

Type:text

Federacja Bibliotek Cyfrowych

Object's details: Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses

Description

Similar objects