Frontiers of Karst Research: Proceedings and recommendations of the workshop held in San Antonio, Texas on 3-5 May 2007. Karst Waters Institute Special Publication 13

White, William Β.; Martin, Jonathan B.

doi:10.21236/ada500922

Cited by 2 publications

(2 citation statements)

References 72 publications

(119 reference statements)

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“…Depending on the conduit density, conduit connectivity, and structural controls within the aquifer, the magnitude and temporal scale of hydrologic responses to hydrologic events can vary. The responses can include changes in flow directions, changes to the locations of surface watershed and groundwatershed boundaries, and activation of different portions of the karstic and epikarstic conduit network (White, 1999). Understanding this variability is the key to characterizing any karst groundwater system.…”

Section: Opportunities To Improve the Csmmentioning

confidence: 99%

Hydrogeologic characterization of Area B, Fort Detrick, Maryland

Goodling¹,

Fleming²,

Solder³

et al. 2023

Scientific Investigations Report

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Section: Opportunities To Improve the Csmmentioning

confidence: 99%

Hydrogeologic characterization of Area B, Fort Detrick, Maryland

Goodling¹,

Fleming²,

Solder³

et al. 2023

Scientific Investigations Report

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“…A critical role of outcrop analogue studies for guiding subsurface reservoir characterization is to illustrate true scales of lateral and vertical heterogeneity that can commonly only be speculated away from well control and below seismic resolution. Previous studies of Pleistocene–Pliocene subsurface stratigraphy of the Bahamas (Beach & Ginsburg, 1980; Pierson, 1982; Williams, 1985; Eberli & Ginsburg, 1987; Budd & Land, 1990; Whitaker & Smart, 1990, 1994; Aurell et al ., 1995; Beach, 1995; Kievman, 1998; Melim, 1996; Whitaker & Smart, 1997a,b, 1998, 2007; Whitaker, 1998; Ginsburg, 2001; Melim et al ., 2001; Cunningham et al ., 2004; Eberli, 2013) have well spacings of tens of kilometres and were largely targeted at delineating the gross stratigraphic picture and diagenetic trends of the Bahamian carbonate platforms. This study uses tightly spaced (<500 m) cores within a relatively small area (15 sq km), paired with a newly collected suite of airborne light detection and ranging (LiDAR), petrographic thin sections, optical and acoustic image logs, and plug and whole‐core porosity–permeability data to better characterize the evolution from Holocene sediments to ‘ancient’ Pleistocene–Pliocene strata.…”

Section: Introductionmentioning

confidence: 97%

Three‐dimensional stratigraphic architecture, secondary pore system development and the Middle Pleistocene transition, Sandy Point area, San Salvador Island, Bahamas

Nolting,

Kerans,

Fernandez‐Ibanez

et al. 2023

Sedimentology

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The Bahamian Archipelago has been the subject of extensive studies of stratigraphy, carbonate island morphology and diagenetic overprinting for many decades. A recently‐acquired dataset comprised of high‐resolution light detection and ranging, tightly spaced cored boreholes with image logs, thin sections, porosity and permeability measurements, and isotopic geochemical analyses provides a unique opportunity to perform detailed sequence stratigraphic analysis. This multi‐faceted study first establishes a new high‐resolution sequence stratigraphic framework for the Sandy Point area of San Salvador Island, encompassing six unconformity bound sequences (exposure surfaces) representing varying lengths of missing time. The stratigraphically lowest sequence is Late Pliocene in age and is dominated by reef facies capped by an extensive laminar caliche that represents 1.5 million years of exposure. The overlying Early Pleistocene is split into two sequences, EP1 and EP2, which are both dominated by low‐energy subtidal facies. The upper three sequences are tied to the Marine Isotope Stage 11, 9 and 5e interglacials, and are distinctly different in facies composition and architecture, being dominated by higher energy facies distributed in a more complex mosaic. The new stratigraphic framework highlights significant changes in depositional style and facies architecture that can be linked to increasing sea‐level amplitude oscillations and greater climate gradient at the Mid Pleistocene Transition. The well‐constrained framework is then used to provide key context for observed complex diagenetic evolution through repeated sea‐level inundation and subaerial exposure. These results suggest that well‐developed subaerial exposure surfaces drive increases in non‐matrix features in the subsequent stratigraphic package following exposure as the well‐cemented exposure surface acts to concentrate fluid flow and dissolution. Integration of non‐matrix features within this framework highlights the importance of dissolution/cementation patterns on formation of these modified unconformity surfaces for focusing later meteoric diagenesis and creating enhanced fluid flow pathways for continued multicyclic diagenetic events.

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Frontiers of Karst Research: Proceedings and recommendations of the workshop held in San Antonio, Texas on 3-5 May 2007. Karst Waters Institute Special Publication 13

Cited by 2 publications

References 72 publications

Hydrogeologic characterization of Area B, Fort Detrick, Maryland

Hydrogeologic characterization of Area B, Fort Detrick, Maryland

Three‐dimensional stratigraphic architecture, secondary pore system development and the Middle Pleistocene transition, Sandy Point area, San Salvador Island, Bahamas

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