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On the value of seismic stratigraphy and seismic geomorphology – Comments on “development patterns of an isolated oligo-mesophotic carbonate buildup, early Miocene, Yadana field, offshore Myanmar” by Teillet et al. (2020)
Marine and Petroleum Geology ( IF 3.7 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.marpetgeo.2020.104689
Victorien Paumard , Simon Lang , Henry W. Posamentier , Moyra E.J. Wilson

Abstract The paper by Teillet et al. (2020b) constitutes a detailed sedimentological study of the upper part of the Yadana carbonate platform (offshore Myanmar). However, the limited consideration and integration of the 3D seismic data results in a study lacking critical context, with the authors concluding that the Yadana Platform developed under strict oligo-mesophotic conditions and presents a layer-cake architecture with laterally continuous lithofacies. We suggest that the interpretations of Teillet et al. (2020b) are not adequately supported because: (1) lithostratigraphic principles are applied to correlate the main lithofacies from four wells using core data across a wide platform (10–20 km); (2) the core data presented are restricted spatially as well as in depth, and are not laterally and vertically representative of the entire platform, hence these core data cannot be solely used to justify the lateral continuity of lithofacies and absence of euphotic depositional environments in the Yadana Platform; (3) the study is not integrated within a comprehensive chronostratigraphic framework and sedimentological observations are not connected in a systematic way; and (4) information extracted from the analysis of seismic facies and seismic geomorphology are ignored, even though lateral variability is observable on seismic within the platform (i.e., variability in depositional features and geometries). Seismic stratigraphy and seismic geomorphology should be considered because they allow the integration of any paleogeographic study into a comprehensive chronostratigraphic framework where 3D seismic data are available. These comments aim at stimulating a discussion on the value of seismic stratigraphy and seismic geomorphology that should not be dismissed to better document the evolution of carbonate platforms through time and space, and accurately assess controls on platform architecture and evolution.

中文翻译:

关于地震地层学和地震地貌学的价值——Teillet 等人对“中新世早期、Yadana 油田、缅甸近海孤立的低中光碳酸盐岩构造的发育模式”的评论。(2020)

摘要 Teillet 等人的论文。(2020b) 对 Yadana 碳酸盐台地上部(缅甸近海)进行了详细的沉积学研究。然而,对 3D 地震数据的有限考虑和整合导致研究缺乏关键背景,作者得出结论认为 Yadana 平台是在严格的寡中光条件下开发的,并呈现出具有横向连续岩相的层饼结构。我们建议 Teillet 等人的解释。(2020b) 没有得到充分支持,因为:(1) 应用岩石地层学原理,使用跨宽平台(10-20 公里)的岩心数据关联四口井的主要岩相;(2) 所呈现的核心数据在空间和深度上都受到限制,不能在横向和纵向上代表整个平台,因此,这些岩心数据不能单独用于证明 Yadana 平台中岩相的横向连续性和缺乏透光沉积环境的合理性;(3)研究没有整合到一个综合的年代地层框架内,沉积学观测没有系统地联系起来;(4) 忽略从地震相和地震地貌分析中提取的信息,即使在平台内的地震中可以观察到横向变化(即沉积特征和几何形状的变化)。应该考虑地震地层学和地震地貌学,因为它们允许将任何古地理研究整合到一个全面的年代地层框架中,在那里可以获得 3D 地震数据。
更新日期:2020-12-01
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