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Showing 1 to 20 of 35 for “"lithostratigraphy"”.
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Lost Names in the Paleozoic Lithostratigraphy of Arkansas
<p>The geology of Arkansas has been studied for nearly 160 years, and our understanding of it is continually evolving. Part of this ever-changing study is the nomenclature of the stratigraphy. From the early reports to today, several lithostratigraphic names have been proposed and abandoned to …
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Geology of Mangapanian (late pliocene) strata, Wanganui Basin: lithostratigraphy, paleontology and sequence stratigraphy
Fourteen Mangapanian and early Nukumaruan (late Pliocene) cyclothems in Wanganui Basin have been studied, stratigraphically logged and geologically mapped in thirteen sections from west to east across the basin. The Mangapanian succession contains two subgroups. The Paparangi Subgroup contains …
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The sedimentology and lithostratigraphy of the Upper Jurassic Lourinha formation, Lusitanian Basin, Portugal
The Lusitanian Basin of West-Central Portugal is one of a family of formerly adjacent North Atlantic margin basins. Like others of its type (e.g. the Jeanne d'Arcand Western Approaches basins) early phases of rifting and subsidence occurred as far back as the Triassic.<br></br><br></br>During the …
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Early and Middle Atokan Lithostratigraphy and Reservoir Development, Northern Arkoma Basin, Northwestern Arkansas
<p>The Arkoma Basin is a peripheral foreland arc basin associated with the Ouachita orogenic belt. In Arkansas, the basin is bounded by the Ouachita belt to the south and the Ozark Dome to the north. Sedimentary rocks of early to middle Atokan age are present in the shallow subsurface at the …
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Characterization of Cenomanian-early Turonian bentonites in southwestern Saskatchewan through lithostratigraphy and chemostratigraphy analysis
… The results of this study show that bentonite lithostratigraphy and chemostratigraphy have great promise in local and regional correlation and that bentonite is readily identifiable through a combination of core examination and geophysical well log studies. Analysis of crystals within can …
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Revision of the Upper Devonian in the Central-Southern Appalachian Basin: Biostratigraphy and Lithostratigraphy
The Upper Devonian of the central-southern Appalachians Valley and Ridge province of Virginia lacks stratigraphic resolution, revised formal nomenclature, and detailed biostratigraphic data. Eight of the most complete sections available in a three thousand square mile area were used to build a …
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The Middle to Late Cretaceous microbiostratigraphy (foraminifera) and lithostratigraphy of the Cauvery Basin, Southeast India
… Cretaceous succession in the Basin, a revised lithostratigraphy, in line with standard stratigraphic procedure, is proposed. The systematic taxonomy of the foraminifera studied is documented and revised in line with Western standards. The study shows that, in contrast to the standard European …
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THE LITHOSTRATIGRAPHY AND BIOSTRATIGRAPHY (FORAMINIFERA) OF THE EARLY CRETACEOUS OF THE SOUTHERN NORTH SEA BASIN
In the available published literature there is little information on the Early Cretaceous strata of the Southern North Sea Basin (Mesozoic Basin). The small amount of Information that has been published i s the result of the search for hydrocarbons (see Chapter 2) . This thesis attempts to remedy …
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Biostratigraphy, lithostratigraphy, ammonite taxonomy and microfacies analysis of the Middle and Upper Jurassic of northeastern Iran
… Dagh). In this thesis, the biostratigraphy, lithostratigraphy, microfacies, depositional environments and palaeobiogeography of these rocks are discussed with special emphasis on the abundant ammonite fauna. They constitute a more or less continuous sequence, being confined by two tectonic …
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The middle Jurassic of New Zealand : a study of the lithostratigraphy and biostratigraphy of the Ururoan, Temaikan and Lower Heterian Stages (?Pliensbachian to ?Kimmeridgian)
The lithologic and biostratigraphic successions of Ururoan, Temaikan and Lower - Middle Heterian (?Sinemurian, Pliensbachian - ?Kimmeridgian) strata from southwest Auckland, south Otago and Southland, New Zealand, are described and discussed. A more logical correlation of the lithologic sequence at …
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Carbon isotope stratigraphy of the interglacial Umberatana Group, Adelaide, Fold Belt, South Australia / by Jamie M. Burgess.
… and correlation should take into account lithostratigraphy and sequence stratigraphy rather than soley relying on data trends or absolute [delta]13C values.
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ΤΕΧΝΙΚΟΓΕΩΛΟΓΙΚΕΣ ΣΥΝΘΗΚΕΣ ΣΤΟ ΝΟΜΟ ΑΧΑΙΑΣ-ΓΕΩΜΗΧΑΝΙΚΟΙ ΧΑΡΑΚΤΗΡΕΣ ΤΩΝ ΠΛΕΙΟΠΛΕΙΣΤΟΚΑΙΝΙΚΩΝ ΙΖΗΜΑΤΩΝ
… UNITIES AREDISTINGUISHED. FOLLOWING, THE LITHOSTRATIGRAPHY, TECTONICS, MINERALOGICAL COMPOSITION AND FABRIC, AND PHYSICAL AND MECHANICAL PROPERTIES OF THE PLIO-PLEISTOCENE SEDIMENTS FROM THE THREE SEDIMENTATION BASINS (CORINTHIAN, PATRAIKOS AND LEONDION) WERE STUDIED. (SHORTENED)
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Weichselian glaciations in the middle Notec River region, northwest Poland
… in the middle Notec River area, NW Poland. A new lithostratigraphy of the study area has been established, based on correlation of stratigraphical position, clast lithology, fabrics and grain size composition of till units. The lithostratigraphy covers two glacial advances of presumed Weichselian …
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ΓΕΩΛΟΓΙΚΗ ΔΟΜΗ ΚΑΙ ΓΕΩΔΥΝΑΜΙΚΗ ΕΞΕΛΙΞΗ ΤΗΣ ΟΡΟΣΕΙΡΑΣ ΤΟΥ ΚΟΖΙΑΚΑ (ΔΥΤΙΚΗ ΘΕΣΣΑΛΙΑ)
… EOCENE. AFTER STUDIES ON THE LITHOSTRATIGRAPHY TECTONIC,STRUCTURE AND DEFORMATION, THERE HAS BEEN CONFIRMED THAT DURING THE IURASSIC PERIOD WAS THE MAIN AREAS OF SEDIMENTATION WERE A) A PLATFORM WITH HERITIC SEDIMENTATION B) A SLOPE BY THE PLATFORM WITH PELAGIC- ABYSIAL …
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Foraminiferal biostratigraphy and palaeoecology of the Albian to Santonian (Cretaceous) of Bornholm, Denmark
… combining palaeoecology, biostratigraphy, lithostratigraphy and basin events. Transgressive phases are recognised in the Early Albian, Early Cenomanian and Late Cenomanian-Early Turonian. The Coniacian interval overall shows stable outer shelf water depths, whilst the Late …
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The stratigraphy and structural evolution of the late Proterozoic Gariep belt in the Sendelingsdrif-Annisfontein area, northwestern Cape Province
… Beit has led to a re-interpretation of tbeir lithostratigraphy and Pan-African geotectonic evolution. During the rifting stage of passive continental margin evolution, the basal elastic Stinkfontein Sequence was deposited in an alluvial fan environment. Fluviatile conglomerates and quartz …
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Hazard Identification and Coastal Stratigraphy in Crescent Harbor, Northeast Whidbey Island, Washington
… land-level change 1825 to 1925 cal. yrs. BP. The lithostratigraphy and diatom microfossil assemblages reveal a marsh peat abruptly overlain by intertidal mud, indicating rapid subsidence. Analysis of the modern-day position of depositional facies indicates subsidence from a high marsh to a …
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Sedimentological and geochemical evidence for late quaternary environmental changes in southern Africa : a case study of the mudbelt deposits off Namaqualand
… during the last 10 000 years. Chrono- and lithostratigraphy, coarse-fraction and geochemical analyses suggest the following sedimentary development on the Namaqualand offshore. An early period of deposition dominated by marine conditions off the coast, but with significant input in the …
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Interpretation of reflection seismic data by analysis of cumulative energy spectra
… a positive identification of the structure and lithostratigraphy of the reflectors is desirable. In this study, synthetic geologic models are generated to model thin-bed and velocity transition (constant velocity gradient) structures. These are transformed to displays of frequency vs. horizontal …
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