• U.S. Geological Survey Karst Interest Group Proceedings ...

    Title U.S. Geological Survey Karst Interest Group Proceedings, San Antonio, Texas, May 16â€"18, 2017 Abstract Karst aquifer systems are present throughout parts of the United States and some of its territories, and have develop...

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  • Quantifying carbonate sediment mixing across a formational ...

    infill suggests that infiltration of sediment was restricted by either insufficient time or that the pathways were blocked by sediment or cementation. Similar features, diagenetic vadose silts, were extensively discussed by Dunham (1969) and in-terpreted by Dunham to have formed in porous rock while in the vadose zone during early emergence.

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  • Origin and evolution of palaeokarst within the Lower ...

     · An elliptical-shaped palaeokarst body within Package C implies the presence of a phreatic tube that was separate from the more cavernous karst below in Package B; however, the occurrence of oolitic dolograinstone clasts that were likely derived from Package C within Package B suggests that the two packages were part of a larger, connected ...

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  • Karstbase Bibliography Database

    Speleogenesis is a non-profit web platform aimed to promote karst and cave studies and integrate the international scholarly community through information exchange, communication and collaboration

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  • Diagenesis and fluid system evolution in the northern Oman ...

    Despite the rich offshore oil accumulations in the Arabian Gulf, the Oman Mountains still are a frontier exploration region. Two gas/condensate fields (Margham and Sajaa) are productive in the northern United Arab Emirates (UAE) in the vicinity of the thrust front (Glennie, 2005; Figure 1).A deep seismic data acquisition carried out across the foothills of the northern UAE (Ministry of Energy ...

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  • The mineralogy of suspended matter, fresh and Cenozoic ...

     · 1 Introduction. Mineral grains are the building blocks of clastic sediments. The mixture of minerals together with organic matter influences the pore water composition, the soil''s pedological evolution and fertility, the fate of pollutants in the subsurface, the porosity and permeability as geohydrological properties and the geomechanical strength of the subsurface.

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  • Fowzia Hussein Ali Abdullah

    Khalaf, F. and Abdullah F.H., 2014, Occurrence of diagenetic alunites within karst cavities infill of the Dammam Formation, Ahmadi, Kuwait: an indicator for hydrocarbon gas seeps. Arab J

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  • (PDF) Diagenesis and fracturing of a large-scale ...

    The influence of coeval tectonics on carbonate platformdevelopment is widely documented, yet the diagenesis of such syntectonic platforms is barely evaluated. An outcrop, petrographic and geochemical study details here for the first time the

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  • Proceedings of the 2001 U.S. Geological Survey Karst ...

    The Floridan Aquifer, which is characterized by high matrix porosity and permeability, provides several examples. INTRODUCTION Dissolution of soluble minerals and development of conduits within karst aquifers results in high permeability and allows rapid and extensive mixing between surface and ground water (e.g. Kincaid, 1997; 1998).

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  • New luminescence ages for the Galería Complex ...

     · The archaeological karstic infill site of Galería Complex, located within the Atapuerca system (Spain), has produced a large faunal and archaeological record (Homo sp. aff. heidelbergensis fossils and Mode II lithic artefacts) belonging to the Middle Pleistocene.Extended-range luminescence dating techniques, namely post-infrared infrared stimulated luminescence (pIR-IR) dating of K …

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  • Cretaceous-Paleocene transition along a rocky carbonate ...

    Parallel nicols. (C) Upper Maastrichtian bioclastic packstone (pk), cut by a cavity filled with Danian grainstone (gr) mainly of lithoclasts and fragments of coralline algae and bryozoans. Note the rugged cavity margin outlined with brown, iron-oxide staining, and the "halo" of diagenetic grainstone (dg, outline stippled white) along the ...

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  • Chapter 2 Diagenesis of Carbonates in Continental Settings

     · The diagenesis of continental carbonates is reviewed comprehensively only infrequently because it encompasses such a wide spectrum of processes tied to continental sedimentary and meteoric environments (Longman, 1980; James and Choquette, 1990; Wright, 1990a).The changes that carbonate sediments and rocks undergo in these environments include the physical, chemical, and/or …

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  • Invasion of a karst aquifer by hydrothermal fluids ...

     · Introduction. Fault‐hosted Pb/Zn mineralization is an extremely common occurrence, with examples throughout the geological record. Such mineralization generally forms at depths of 0.5–3 km in the Earth''s crust yet, despite its ubiquity, there are few examples of the effects produced by the same mineralizing fluids nearer the surface.

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  • Geologic, Seismic, Climatic, and Oil Production Controls ...

     · Khalaf, F., and F. Abdullah, 2014, Occurrence of diagenetic alunites within karst cavity infill of the Dammam Formation, Ahmadi, Kuwait: An indicator of hydrocarbon gas seeps: Arabian Journal of Geosciences, v. 8/3, March 2014.

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  • (PDF) Evinosponges in the Triassic Esino Limestone ...

    In contrast to the karst cavities observed at the top of the Esino Limestone, the evinosponges lack typical geopetal features. Cavity formation most probably occurred in the phreatic environment. Conditions most favourable for dissolution of the carbonates occur in meteoric or marine-meteoric phreatic environments.

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  • Advances in Hypogene Karst Studies

    Hypogenic karst and paleokarst Within the conventional, predominantly epigenic, karst paradigm, instances of deep-seated karst have commonly been interpreted as paleo (epigenetic) karst because the possibility of karstification in deep environments without rechar ge from the immediately overlying or adjacent surface has been neglected for a ...

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  • Minerals | Free Full-Text | Structural Diagenesis in ...

    The identification of structural diagenesis and the reconstruction of diagenetic paragenesis in fault damage zones is important for understanding fault mechanisms and fluid flow in the subsurface. Based on the examination of core and sample thin section data, we deciphered the diagenetic parasequence and their fault controls for Ordovician carbonates in the northern Tarim intracratonic basin ...

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  • Occurrence of diagenetic alunites within karst cavity ...

     · Occurrence of diagenetic alunites within karst cavity infill of the Dammam Formation, Ahmadi, Kuwait: an indicator of hydrocarbon gas seeps. Fikry I. Khalaf 1 & Fawzia A. Abdullah 1 Arabian Journal of Geosciences volume 8, pages 1549–1556 (2015)Cite this article

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  • Fikry Khalaf

    Occurrence of diagenetic alunites within karst cavity infill of the Dammam Formation, Ahmadi, Kuwait: an indicator of hydrocarbon gas seeps more by Fikry Khalaf ABSTRACT Alunite minerals occur as white powdery lumps and laminated coloured deposits within cavity and solution channel infill of the palaeokarst zone of the Upper Eocene Dammam ...

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  • The age, fauna and palaeoenvironment of the Late Triassic ...

    The relative age of the samples within a bedded shale pocket in fissure 1 demonstrates that this is an in situ normal bedded sequence of Westbury Formation. The reptile bones occur within the same matrix and are bracketed by the palynological dates. Figure 7d shows the meniscus fill to the fissure. This meniscus diminishes up-section and is ...

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  • Outcrop sedimentology of the Natih Formation, northern ...

    The bedrock incision surface shows dessication cracks and marine sediment karst fills, as well as geopetal cavity sediments and cement fills (see Figure 23). The infill overlying the incision surface comprises a number of channel features and both the incision and the overlying infill have been studied and mapped out in detail by Grélaud (2005 ...

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  • Petrography and diagenesis of cavity-fill dolocretes ...

     · The association of diagenetic alunites with the cavity-fill dolocretes suggests that hydrocarbon seepage may have played a role in the development of these dolocretes. It is suggested that the occurrence of similar diagenetic setting within carbonate sequence may potentially affect their reservoir characteristics.

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  • Petrographic and isotopic studies of the altered acid ...

    Diagenetic alunite in clastic sequences, Kuwait, Arabian Gulf. Sedimentology, Vol. 37, Issue. 1, p. 155. ... Clay mineral occurrence and burial transformations: ... Occurrence of diagenetic alunites within karst cavity infill of the Dammam Formation, Ahmadi, Kuwait: ...

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  • New Luminescence Ages for the Galería Complex ...

     · The archaeological karstic infill site of Galería Complex, located within the Atapuerca system (Spain), has produced a large faunal and archaeological record (Homo sp. aff. heidelbergensis fossils and Mode II lithic artefacts) belonging to the Middle Pleistocene. Extended-range luminescence dating techniques, namely post-infrared infrared stimulated luminescence (pIR-IR) dating of K …

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  • Pattern of sedimentary infilling of fossil mammal traps ...

    the occurrence of chert horizons at several levels within the upper portion of the Intermediate Unit of the Miocene. These chert horizons mainly by early diagenetic replacement calcareous and/or mudstone deposits (Bustillo & Bustillo, 2000; Bustillo & Alonso-Zarza, 2007). Cerro de los Batallones is …

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  • Petrography and diagenesis of cavity-fill dolocretes ...

    The association of diagenetic alunites with the cavity-fill dolocretes suggests that hydrocarbon seepage may have played a role in the development of these dolocretes. It is suggested that the occurrence of similar diagenetic setting within carbonate sequence …

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  • Diagenetic alunite in clastic sequences, Kuwait, Arabian ...

    Search within. Search term. Advanced Search Citation Search. Search term. Advanced Search Citation Search. Login / Register. Sedimentology. Volume 37, Issue 1. Diagenetic alunite in clastic sequences, Kuwait, Arabian Gulf. FIKRY I. KHALAF. Environmental and Earth Sciences Division, Kuwait Institute for Scientific Research, PO Box 24885, 13109 ...

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  • Quantifying carbonate sediment ...

    The occurrence of needle‐like crystals at depth (34.8 and 101 cm), is consistent with a predominantly aragonite mineralogy of the infill sediment. The occurrence of large crystals (up to 15 μm) at 34.8 cm depth, some of which have blunt ends, sharp crystal faces and possible prismatic shape, is typical of needles formed in marine algae ...

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  • Occurrence of diagenetic alunites within karst cavity ...

    Alunite minerals occur as white powdery lumps and laminated coloured deposits within cavity and solution channel infill of the palaeokarst zone of the Upper Eocene Dammam Formation. This formation is exposed in a quarry located on the Al Ahmadi ridge within the Greater Burgan oil field in southern Kuwait. Field occurrences and sedimentary structures of the alunite deposits were described.

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  • Fluid flow reconstruction in karstified Panormide platform ...

     · (E) Partially eroded karst cavity with K-Cal-1 occurring at the edges of the cavity. Brown K-Cal-4 cement fills most of the cavity. Rhombic calcite covers bitumen droplets. (F) Sample from within a karst cavity that mainly consists of K-Cal-4, covered …

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  • Permian millipedes from the Fort Sill fissures of ...

    Occurrence of fossil myriapods in karst. The Richards Spur locality is the site of one of the oldest occurrences of fossil myriapods (millipedes and centipedes) in karst deposits, including limestone cave deposits and fissure fills. However, there are many additional occurrences in karstic deposits.

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  • (PDF) Occurrence of diagenetic pseudobreccias within the ...

    Occurrence of diagenetic pseudobreccias within the paleokarst zone of the upper Dammam Formation in Kuwait, Arabian Gulf ... Polished slabs of some completely dolocretized host rock show the occurrence of cavity-filling silica cement. ... The latter one is of limited occurrence and usually infill karst channels. The subsurface features are ...

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  • Control of impact crater fracture systems on subsurface ...

     · Secondary diagenetic processes, such as burial diagenesis due to heat in presence of water, may have contributed to the formation or destruction of layered materials [Cohen and Treiman, 1999; Fuks et al., 1995]. [11] The extremely Early Noachian is a geologic period referred to by some authors as the "pre‐Noachian" [e.g., Frey, 2004].

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