气候变化领域集成服务门户(CCPortal): Late Quaternary sequence stratigraphy as a tool for groundwater exploration: Lessons from the Po River Basin (northern Italy)

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DOI	10.1306/06121918116
	Late Quaternary sequence stratigraphy as a tool for groundwater exploration: Lessons from the Po River Basin (northern Italy)
	Campo B.; Bohacs K.M.; Amorosi A.
发表日期	2020
ISSN	0149-1423
起始页码	681
结束页码	710
卷号	104 期号:3
英文摘要	Sequence stratigraphy, typically used for hydrocarbon exploration in ancient strata, can be applied to late Quaternary successions to decipher complex spatial relations among their aquifers. Late Pleistocene-Holocene strata of the Po Basin were investigated using a sequence stratigraphic approach to produce a highresolution model for guiding groundwater exploitation. Because facies tend to be diachronous across depositional basins, facies analysis was done within the conformable intervals of strata revealed by sequence stratigraphy to accurately interpret and map coeval lateral facies relations. Volumetric assessments, sand-distribution mapping, hydraulic characterization of facies, and spatial variations of hydraulic parameters revealed two aquifer systems: The lowstand systems tract (LST) and the highstand systems tract (HST) vertically separated by an aquitard, the transgressive systems tract (TST). The LST aquifer consists of amalgamated fluvial sands (average transmissivity: 3.5 E-3 m2/s [37.7 E-3 ft2/s]) with considerable width (>25 km [>16 mi]) preferentially elongated downstream. The widespread TST aquitard is dominated volumetrically (~57%) by low-permeability estuarine deposits. The HST aquifer (average transmissivity: 5.4 E-5 m2/s [58.1 E-5 ft2/s]) is 5-10 km (~3-6 mi) wide, elongated parallel to the modern shoreline. Sequence stratigraphic analysis at the parasequence scale revealed an almost unprecedented level of detailed insight into aquifer (or aquiclude) dimensions and the complex distribution of hydraulic parameters in the subsurface, showing that similar facies have different permeabilities depending on systems tract. In contrast, lithostratigraphic mapping obscures subsurface connectivity and directional trends and hasminimal predictive power away from control. These insights should be useful for guiding correlation and mapping of the deep subsurface and for hydrocarbon reservoir modelers. © 2020 The American Association of Petroleum Geologists. All rights reserved.
关键词	Aquifers Deposition Groundwater resources Hydrocarbons Hydrogeology Mapping Petroleum prospecting Groundwater exploitation Groundwater exploration Highstand systems tract Hydraulic characterization Hydrocarbon exploration Late Pleistocene-Holocene Sequence stratigraphic analysis Transgressive systems tracts Stratigraphy aquifer characterization exploitation facies analysis fluvial deposit groundwater exploration hydraulic property lithostratigraphy Pleistocene-Holocene boundary sequence stratigraphy volume change Italy Po Basin
语种	英语
来源机构	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/131677
推荐引用方式 GB/T 7714	Campo B.,Bohacs K.M.,Amorosi A.. Late Quaternary sequence stratigraphy as a tool for groundwater exploration: Lessons from the Po River Basin (northern Italy)[J]. AAPG Bulletin,2020,104(3).
APA	Campo B.,Bohacs K.M.,&Amorosi A..(2020).Late Quaternary sequence stratigraphy as a tool for groundwater exploration: Lessons from the Po River Basin (northern Italy).,104(3).
MLA	Campo B.,et al."Late Quaternary sequence stratigraphy as a tool for groundwater exploration: Lessons from the Po River Basin (northern Italy)".104.3(2020).