Architecture of deepwater turbidite lobes: A case study of Carboniferous turbidite outcrop in the Clare Basin, Ireland
Through lithofacies analysis and architecture anatomy of the Carboniferous Ross Sandstone turbidites outcropped at western Ireland, the depositional model of deepwater turbidite lobes is established. Seven types of lithofacies are recognized including goniatites-rich shale, laminated shale, laminate...
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KeAi Communications Co., Ltd.
2020-10-01
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doaj-4288c9fd74164ba8aec538cb8569c1b62021-04-02T11:17:05ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042020-10-014759901000Architecture of deepwater turbidite lobes: A case study of Carboniferous turbidite outcrop in the Clare Basin, IrelandLeifu ZHANG0Yilong LI1National Energy Shale Gas Research (Experiment) Center, Langfang 065007, China; PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China; CNPC Key Lab of Unconventional Oil and Gas, Langfang 065007, China; Corresponding authorPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaThrough lithofacies analysis and architecture anatomy of the Carboniferous Ross Sandstone turbidites outcropped at western Ireland, the depositional model of deepwater turbidite lobes is established. Seven types of lithofacies are recognized including goniatites-rich shale, laminated shale, laminated siltstone, massive sandstone, fine-medium sandstone with mud-clast, basal gravel, and chaotic mudstone, which can be subdivided into units of three origins, turbidite lobe, turbidite channel, and slide-slump; and four hierarchical levels, lobe complex, lobe, lobe element and single sandstone layer. The lobes show apparent compensational stacking pattern, lobe elements display typical thickening-upward cycles on vertical profile, and the higher the hierarchical level, the better the preservation of the hierarchical boundary is. In general, turbidite lobe deposits appear as tabular, parallel/sub-parallel sandstone and mudstone interbeds, and change from thick, massive sandstone in the proximal end to thinner sandstone and mudstone interbeds from axis to fringe, with the sand-shale ratio and degree of sandstone amalgamation decreasing.http://www.sciencedirect.com/science/article/pii/S1876380420601112deepwater sedimentationturbidite lobesoutcrop anatomyarchitecture hierarchyquantitative characterizationCarboniferous Ross Sandstone Formation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Leifu ZHANG Yilong LI |
spellingShingle |
Leifu ZHANG Yilong LI Architecture of deepwater turbidite lobes: A case study of Carboniferous turbidite outcrop in the Clare Basin, Ireland Petroleum Exploration and Development deepwater sedimentation turbidite lobes outcrop anatomy architecture hierarchy quantitative characterization Carboniferous Ross Sandstone Formation |
author_facet |
Leifu ZHANG Yilong LI |
author_sort |
Leifu ZHANG |
title |
Architecture of deepwater turbidite lobes: A case study of Carboniferous turbidite outcrop in the Clare Basin, Ireland |
title_short |
Architecture of deepwater turbidite lobes: A case study of Carboniferous turbidite outcrop in the Clare Basin, Ireland |
title_full |
Architecture of deepwater turbidite lobes: A case study of Carboniferous turbidite outcrop in the Clare Basin, Ireland |
title_fullStr |
Architecture of deepwater turbidite lobes: A case study of Carboniferous turbidite outcrop in the Clare Basin, Ireland |
title_full_unstemmed |
Architecture of deepwater turbidite lobes: A case study of Carboniferous turbidite outcrop in the Clare Basin, Ireland |
title_sort |
architecture of deepwater turbidite lobes: a case study of carboniferous turbidite outcrop in the clare basin, ireland |
publisher |
KeAi Communications Co., Ltd. |
series |
Petroleum Exploration and Development |
issn |
1876-3804 |
publishDate |
2020-10-01 |
description |
Through lithofacies analysis and architecture anatomy of the Carboniferous Ross Sandstone turbidites outcropped at western Ireland, the depositional model of deepwater turbidite lobes is established. Seven types of lithofacies are recognized including goniatites-rich shale, laminated shale, laminated siltstone, massive sandstone, fine-medium sandstone with mud-clast, basal gravel, and chaotic mudstone, which can be subdivided into units of three origins, turbidite lobe, turbidite channel, and slide-slump; and four hierarchical levels, lobe complex, lobe, lobe element and single sandstone layer. The lobes show apparent compensational stacking pattern, lobe elements display typical thickening-upward cycles on vertical profile, and the higher the hierarchical level, the better the preservation of the hierarchical boundary is. In general, turbidite lobe deposits appear as tabular, parallel/sub-parallel sandstone and mudstone interbeds, and change from thick, massive sandstone in the proximal end to thinner sandstone and mudstone interbeds from axis to fringe, with the sand-shale ratio and degree of sandstone amalgamation decreasing. |
topic |
deepwater sedimentation turbidite lobes outcrop anatomy architecture hierarchy quantitative characterization Carboniferous Ross Sandstone Formation |
url |
http://www.sciencedirect.com/science/article/pii/S1876380420601112 |
work_keys_str_mv |
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