DOI: 10.1306/06301009107
Scopus记录号: 2-s2.0-79951745708
论文题名: Seismic architecture of a Lower Cretaceous platform-to-slope system, Santa Agueda and Poza Rica fields, Mexico
作者: Janson X. ; Kerans C. ; Loucks R. ; Marhx M.A. ; Reyes C. ; Murguia F.
刊名: AAPG Bulletin
ISSN: 0149-1882
EISSN: 1558-9612
出版年: 2011
发表日期: 2011
卷: 95, 期: 1 起始页码: 105
结束页码: 146
语种: 英语
Scopus关键词: Carbonate platforms
; Carbonate sediments
; Cross section
; Debris flows
; Density flow
; Hydrocarbon accumulation
; Low-amplitude
; Lower Cretaceous
; Me-xico
; Reflection geometry
; Seismic datas
; Seismic event
; Seismic signatures
; Shallow-water
; Shape and size
; Slope system
; Anoxic sediments
; Architecture
; Carbonation
; Debris
; Floors
; Hydrocarbons
; Seismic response
; Seismic waves
; Stratigraphy
; Deposits
; carbonate platform
; Cretaceous
; data set
; debris flow
; density current
; pelagic deposit
; redeposition
; sediment trap
; seismic data
; seismic reflection
; seismic stratigraphy
; shallow water
; turbidity
; Mexico [North America]
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Two three-dimensional seismic data sets over the Albian western Golden Lane margin and time-equivalent basinal deposits of Poza Rica field allowed us to investigate the linked architecture of a steep-sided carbonate platform (El Abra Formation) and a thick accumulation of redeposited carbonate sediment at the toe of the slope and in the basinal area (Tamabra Formation). Regional seismic cross sections show that the most aggrading Albian platform has an eroded platform top, a scalloped margin, and a channelized slope that are equivalent to a 20-km (12.4-mi)-wide, westward-thinning, thick toe-of-slope apron made of chaotic, contorted, mounded, moderate- to highamplitude reflections. Detailed reflection geometries in the Albian toe-of-slope and basinal deposits consist of chaotic to short, discontinuous, low-amplitude reflection at the toe of the slope of the Golden Lane platform, laterally changing to a discontinuous mounded, shingling reflection, which ultimately turns into high-amplitude parallel reflections. We interpret this lateral change to reflect the seismic signature of the change from the block- and debris-flow-dominated toe-of-slope area, to debris-flow and concentrated density flow deposits in the basin that ultimately grade laterally into pelagic deposits. On a flattened seismic slice, mounded reflections correspond to lobate to fan-shaped seismic events several kilometers wide that are interpreted as a carbonate basin-floor fan. Comparison between core and seismic data shows a dominance of debris flows in the lower two Albian sequences (Albian 1 and Albian 2) that grade vertically into more lobate concentrated density flows and turbidites in the upper two Albian sequences (Albian 3 and Albian 4). Seismic data used in this study, combined with core observations, do not support the interpretation of the Albian Tamabra Formation being of shallow-water origin. Seismic features identified as basin-floor fan, channel, and debris-flow deposits have a shape and size that are similar to those of other redeposited basinal carbonate deposits elsewhere. The seismic architecture shows that the Poza Rica field is a typical example of thick accumulation of grainy porous carbonate deposits in a basinal setting. This example shows the potential of a large hydrocarbon accumulation in a tectonically modified stratigraphic trap around shallow-water carbonate platforms. Copyright © 2011. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79951745708&doi=10.1306%2f06301009107&partnerID=40&md5=c5a21db4f8679d92c25a4e556abc8daa
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13451
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Janson X.,Kerans C.,Loucks R.,et al. Seismic architecture of a Lower Cretaceous platform-to-slope system, Santa Agueda and Poza Rica fields, Mexico[J]. AAPG Bulletin,2011-01-01,95(1)