A 1600 m thick succession of the Miocene Horse Camp Formation Member 2 exposed in east central Nevada records predominantly terrigenous clastic deposition in subaerial and subaqueous fan delta environments and nearshore and offshore lacustrine environments
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River systems of part of the Himalayan foreland northern Bihar plains India are described in terms of their channel morphology hydrology and suspended sediment characteristics A simple
Special Publs Soc econ Paleont Miner Tulsa No 35 Classification kingdom Animalia genus Pustulichnus Name Homonyms Pustulichnus Ekdale & Picard 1985 Bibliographic References Neave S A and successors 1939 2004 Nomenclator Zoologicus vols 1 10 online [developed by uBio hosted online at MBLWHOI Library]
Summary Fluvial landforms and deposits provide one of the most readily studied Quaternary continental records and alluvial strata represent an important component in most ancient continental
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ABSTRACT Geological mapping and sedimentological investigations in the Guilin region South China have revealed a spindle to rhomb shaped basin filled with Devonian shallow to deep water carbonates This Yangshuo Basin is interpreted as a pull apart basin created through secondary synthetic strike slip faulting induced by major NNE SSW trending
Seismic profiles across the top of northwestern Great Bahama Bank reveal that the modern bank is formed by the coalescence of three smaller platforms
ABSTRACT The Wagwater Trough is a fault bounded basin which cuts across east central Jamaica The basin formed during the late Palaeocene or early Eocene and the earliest sediments deposited in the
Intensive study of modern carbonate sediments and a substantial library of fossil examples have brought us to the point where it is now possible to formulate actual facies models for carbonate deposits which may serve as frameworks or guides for future observations and most important in terms of hydrocarbon exploration predictors in new geological situations
To understand the formation and diagenesis of carbonate rocks mineralogical and geochemical data derived from the study of non carbonate constituents trace elements and stable isotopes must be integrated Other indicators for depositional and diagenetic
Quantitative determination of palaeochannel geometry and hydraulics from point bar deposits requires an understanding of the interaction between channel bend migration temporal and spatial variation of point bar geometry and facies and outcrop orientation
The thinnest recognizable strata in modern eolian dune sands can be grouped into six classes They are herein named planebed laminae rippleform laminae ripple foreset crosslaminae climbing translatent strata grainfall laminae and sandflow cross strata
The sediment flux from a mountainous catchment can be expressed as a function of a landslide rate constant κ which accounts for the vigour of hillslope erosion
The dolomites at Navan Ireland formed in Courceyan peritidal and shallow shelf limestones The dolomite body has a plume like geometry cross cutting both lithological boundaries and diagenetic barriers generated by sea floor cementation and emergence
The Lower Jurassic Aztec Sandstone is an aeolian deposited quartzose sandstone that represents the western margin of the southerly migrating Navajo Nugget sand sea or erg
WILLIAM L DUKE Department of Geosciences The Pennsylvania State University University Park Pennsylvania 16802 USA Search for more papers by this author
Bostick N measurements of the level of catagena sis of solid organic matter in sedimentary rocks to aid exploration for petroleum and determine former burial temperatures are view Soc Econ Paleont Miner Tulsa Okla 1979 26 17 43
Along the Jurassic Cretaceous dolomitic beds of the Tripolis Unit in the Mainalon Mt and the surrounding areas products of a widespread breccias have been recognized This brecciation extended through at least two stages early and late diagenetic respectively The first brecciation stage is considered to have taken place penecontemporaneously or soon after the
A study of cores from thirty three coreholes drilled in various parts of the Niger delta has shown tidal channel sand to be the dominant lithofacies type in the uppermost 30 m of the deltaic complex Below 30 m fluviatile sand becomes predominant
The deep tow instrument package of Scripps Institution of Oceanography provides a unique opportunity to delineate small scale features of a size comparable to those features usually described from ancient deep sea fan deposits
The realm of early diagenesis will be regarded here as synonymous with eogenetic environment of Choquette and Pray 1970 In this the various diagenetic processes act during that stage between accumulation of the sediment on the Earth s surface and its burial below the depth of significant influence by processes related to that surface
ABSTRACT The concept of syntectonic conglomerate is based on the idea that gravel progradation is mainly generated by an increase in tectonic uplift and erosion of a source area with attendant increase in sediment flux supplied to a basin However other mechanisms such as changes in basin subsidence rates sorting of supplied sediment and capability of
ABSTRACT Many types of carbonate platforms have been described from homoclinal ramps to rimmed shelves and a full spectrum of variations in between; the distinction between these different types can be problematic Nevertheless classification of carbonate platforms is not just a semantic or academic issue For example it is clearly important for the
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