Lithostratigraphy of the Kookfontein Formation (Ecca Group, Karoo Supergroup), South Africa

H.de V. Wickens; D.I. Cole

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Lithostratigraphy of the Kookfontein Formation (Ecca Group, Karoo Supergroup), South Africa

机译：Kookfontein形成（ECCA集团，Karoo Supergroup），南非的LithoStratigraphy

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The Permian Kookfontein Formation forms part of the upper Ecca Group in the southwestern part of the main Karoo Basin of South Africa. It occupies a stratigraphic position between the underlying Skoorsteenberg Formation and the overlying Waterford Formation, with its regional extent limited to the cut-off boundaries of the Skoorsteenberg Formation. The Kookfontein Formation has an average thickness of 200 m, coarsens upwards, and predominantly comprises dark grey shale, siltstone and thin- to thick-bedded, fine- to very fine-grained, feldspathic litharenite. Characteristic upward-coarsening and thickening successions and syn-sedimentary deformation features reflect rapid deposition and progradation of a predominantly fluvially-dominated prodelta and delta front slope environment. The upward increase in the abundance of wave–ripple marks further indicates a gradual shallowing of the depositional environment through time. The upper contact with theWaterford Formation is gradational, which indicates a transition from deposition in an unstable upper slope/shelf margin environment to a more stable shelf setting.

机译：二叠纪Kookfontein形成在南非主要卡罗盆地的西南部的上部ECCA集团的一部分。它占据了潜在的Skoorsteenberg形成和覆盖的沃特福德形成之间的地层位置，其区域范围仅限于Skoorsteenberg形成的截止边界。 Kookfontein形成的平均厚度为200米，向上粗糙，主要包括深灰岩，硅铁晶和薄为厚的床，细小至非常细粒度的长度石英。特征向上粗化和增厚的继承和同步变形特征反映了主要的氟普利主导的Prodelta和Delta前坡环境的快速沉积和促进。波纹纹波标记丰富的上升进一步表明通过时间逐渐消失沉积环境。与水木形成的上接触是渐变的，这表明从不稳定的上斜率/架子边缘环境中的沉积转换到更稳定的货架设置。

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来源
《South African Journal of Geology: Being the Transaction of the Geological Society of South African: Syndie die Verhandelinge van die Geologiese Vereniging van Suid-Afrika》 |2017年第3期|共12页
作者
H.de V. Wickens; D.I. Cole;
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作者单位

Geo-Routes Petroleum 37 Zevendal Rd Zevendal Kuils River 7580 South Africa;

Council for Geoscience P.O. Box 572 Bellville 7535 South Africa;

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原文格式 PDF
正文语种 eng
中图分类地质学;
关键词
Permian; Kookfontein; Formation;

机译：二叠纪;Kookfontein;形成;

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1. Lithostratigraphy of the Kookfontein Formation (Ecca Group, Karoo Supergroup), South Africa [J] . H.de V. Wickens, D.I. Cole South African Journal of Geology: Being the Transaction of the Geological Society of South African: Syndie die Verhandelinge van die Geologiese Vereniging van Suid-Afrika . 2017,第3期

机译：Kookfontein形成（ECCA集团，Karoo Supergroup），南非的LithoStratigraphy
2. Lithostratigraphy of the Pietermaritzburg Formation (Ecca Group, Karoo Supergroup), South Africa [J] . E.M. Bordy, S. Spelman, D.I. Cole, South African Journal of Geology: Being the Transaction of the Geological Society of South African: Syndie die Verhandelinge van die Geologiese Vereniging van Suid-Afrika . 2017,第2期

机译：Pietermaritzburg形成（ECCA集团，Karoo Supergroup），南非的Lithostrataphy
3. Lithostratigraphy of the Clarens Formation (Stormberg Group, Karoo Supergroup), South Africa [J] . E.M. Bordy, H.V. Head South African Journal of Geology: Being the Transaction of the Geological Society of South African: Syndie die Verhandelinge van die Geologiese Vereniging van Suid-Afrika . 2018,第1期

机译：Clarens Traphatigraphy澄清形成（Stormberg Group，Karoo Supergroup），南非
4. Geothermal energy from the Main Karoo Basin (South Africa): An outcrop analogue study of Permian sandstone reservoir formations [C] . Stuart A. Campbell, Nils Lenhardt, Matthys A. Dippenaar European geosciences union general assembly . 2017

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5. Uranium Mineralisation and Provenance Analyses of the Karoo Supergroup in the Springbok Flats Coalfield, South Africa [D] . Nxumalo, Valerie. 2020

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6. Culling recolonizing mesopredators increases livestock losses: Evidence from the South African Karoo [O] . Nicoli Nattrass, Beatrice Conradie, Jed Stephens, 2020

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7. Geochemistry of sandstones and shales from the Ecca Group, Karoo Supergroup, in the Eastern Cape Province of South Africa: Implications for provenance, weathering and tectonic setting [O] . Baiyegunhi Christopher, Liu Kuiwu, Gwavava Oswald 2017

机译：来自南非东开普省卡鲁超群的Ecca集团砂岩和页岩的地球化学：对物源，风化和构造背景的影响
8. Comparison of Total and Cold-Extractable Uranium in Stream Sediments of the Southwestern Karoo Supergroup, South Africa [R] . Jakob, W. R. O., Smit, M. C. B., Murphy, G. C. 1979

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Lithostratigraphy of the Kookfontein Formation (Ecca Group, Karoo Supergroup), South Africa

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