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Journal articles on the topic 'Sedimentological'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

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1

SMEESTERS, An, Philippe MUCHEZ, and Luc HANCE. "Sequence stratigraphical study of the Tournaisian strata in Belgium and Southern China." Geologica Belgica 3, no. 3-4 (October 1, 2001): 285–307. http://dx.doi.org/10.20341/gb.2014.034.

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Strata of late Devonian and Tournaisian age in Belgium and Southern China were studied sedimentologically. This detailed study integrated into a biostratigraphical framework, based on foraminiferal zonation, allowed the construction of a sequence stratigraphical model for both areas. Based on these models a correlation on the scale of third order sequences between these two widely separated depositional environments can be made. This indicates the eustatic nature of the sea-level changes that caused the sedimentological changes during the Tournaisian.

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2

Nenadic, Drazenko, Vladimir Simic, and Slobodan Knezevic. "Stratigraphical and Lithological characteristics of Preloess sediments in Eastern Srem, Serbia." Annales g?ologiques de la Peninsule balkanique, no. 64 (2002): 53–62. http://dx.doi.org/10.2298/gabp0264053n.

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In the area of Eastern Srem Pleistocene sediments cover large territories. Their facial diversity and very complex interrelations of lithological units are one of the important features of this part of the Pannonian basin. Study of stratigraphic, lithologic, sedimentologic and mineralogic characteristics of these deposits from boreholes in Zemun, Indjija, Cortanovci and Ruma led to conclusion that the interaction of tectonic and climatic changes, as well as difference in sedimentological environments, caused formation of genetically different lithostratigraphic units.

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3

Begma, D. S., and V. A. Belkina. "LITOLOGICAL CHARACTERISTIC OF ONE OF LAYERS OF UPPERJURASSIC SEDIMENTS OF THE T FIELD." Oil and Gas Studies, no. 4 (September 1, 2017): 7–13. http://dx.doi.org/10.31660/0445-0108-2017-4-7-13.

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The relevance of the discussed issue is predetermined by the fact that almost all geological issues are solved on the basis of the models, which accuracy increases considerably, when using sedimentological component. Sedimentological factors control the conditions of formation, placement and quality of a reservoir and caps. It means that consideration of sedimentological models increases the efficiency of exploration for oil and gas, particularly the preparation of sediments for development and their operational drilling.

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4

Webb, Esmee. "Sand traps for the unwary - problems in the interpretation of sedimentological analyses." Queensland Archaeological Research 9 (December 1, 1992): 43. http://dx.doi.org/10.25120/qar.9.1992.110.

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The principles of sedimentology are briefly described.Â Four recently published archaeological reports containing sedimentological analyses are critically reviewed and it is suggested that they could all have been improved if the archaeologists who undertook them had discussed their investigations with a sedimentologist before beginning laboratory work.Â Finally, reference is made for comparative purposes to some sedimentological work recently undertaken in Western Australia and a plea is entered that archaeologists familiarise themselves with the full range of sedimentological techniques before undertaking their own analyses.

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5

Ares, María Guadalupe, Fabricio Bongiorno, Mauro Holzman, Celio Chagas, Marcelo Varni, and Ilda Entraigas. "Water erosion and connectivity analysis during a year with high precipitations in a watershed of Argentina." Hydrology Research 47, no. 6 (February 8, 2016): 1239–52. http://dx.doi.org/10.2166/nh.2016.179.

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Soil erosion is a global concern because of its consequences for the environment and the economy of countries. In the Argentine Pampas Region, soil erosion process is a priority issue, although there is little information about sediment concentration (SC) in agricultural catchments. The study aimed at assessing the factors that have a major influence on SC and discussing the dynamics of hydrological and sedimentological connectivity during 2012, a year with precipitation over the mean and significant erosive events. The study was conducted in a watershed of Buenos Aires province, Argentina. A linear regression model, that considered autocorrelation, was obtained. Maximum rainfall intensity in 30 minutes and peak flow were related to SC. An analysis of satellite images was carried out to discuss the hydrological connectivity, and a connectivity index was calculated to assess changes in sedimentological connectivity. The analyses suggested increments in hydrological and sedimentological connectivity, associated with the drainage area expansion and with water erosion rills. Hydrological connectivity is needed for sedimentological connectivity. However, increments in sedimentological connectivity may have been conditioned by the input of energy to detach and to transport particles. This may have been evidenced when flows exceeded a threshold runoff coefficient.

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6

Kanai, Yutaka. "Sedimentological studies using beryllium isotopes." Journal of the Sedimentological Society of Japan 73, no. 1 (2014): 19–26. http://dx.doi.org/10.4096/jssj.73.19.

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7

Benton, Michael J. "Ichnology: Sedimentological use of dinosaurs." Nature 321, no. 6072 (June 1986): 732. http://dx.doi.org/10.1038/321732a0.

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8

C., Burton, Rosenbaum M., and Stevens R. "Sedimentological considerations for predictive modelling." Bulletin of Engineering Geology and the Environment 61, no. 2 (May 1, 2002): 129–36. http://dx.doi.org/10.1007/s100640100128.

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9

SÜRÄINFN, ARI. "Sedimentological aspects in archaeological contexts." Boreas 16, no. 3 (January 16, 2008): 248. http://dx.doi.org/10.1111/j.1502-3885.1987.tb00093.x.

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10

Benn, Douglas I. "Glacial sedimentological research in Scotland." Scottish Geographical Magazine 112, no. 1 (March 1996): 57–61. http://dx.doi.org/10.1080/00369229618736980.

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11

Takashimizu, Yasuhiro. "Report from the 15th International Sedimentological Congress." Journal of the Sedimentological Society of Japan 48, no. 48 (1998): 115–16. http://dx.doi.org/10.4096/jssj1995.48.115.

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12

Sønderholm, M., J. D. Collinson, and H. Tirsgaard. "Stratigraphic and sedimentological studies of the Eleonore Bay Group (Precambrian) between 73° 30' and 76°N in East Greenland." Rapport Grønlands Geologiske Undersøgelse 145 (December 31, 1989): 97–102. http://dx.doi.org/10.34194/rapggu.v145.8085.

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As part of the North-East Greenland Project 1988- 1990, a sedimentologieal study of the Precambrian Eleonore Bay Group between Grandjean Fjord and Bessel Fjord (75°-76°N) (fig. 1) was planned to start in 1988 with one two-man team and to eontinue in 1989 with two teams. This area was last visited in 1955 when Sommer (1957) as a member of Lauge Koeh's expeditions to East Greenland earried out the mapping. This work, however, only dealt with stratigraphie and teetonic problems, and sedimentological data, apart from gross lithologies, were not recorded. Unfortunately, the field work of 1988 quiekly revealed that the sediments had suffered from a relatively strong metamorphie recrystallisation, and henee it was generally not possibie to earry out detailed sedimentologieal work in this arear As a eonsequenee the team eoneentrated on stratigraphie problems, and atter 3 weeks the working area was moved southwards to Vibeke Sø (Hudson Land) and Brogetdal (Strindberg Land) (fig. 1) where the rest of the season was spent.

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13

Konstantopoulos, P., A. Maravelis, D. Nikolaidou, G. Pantopoulos, and A. Zelilidis. "APPLICATION OF BEDS THICKNESS DISTRIBUTIONS IN TURBIDITE DEPOSITS OF MAVRI MITI AREA, SW GREECE." Bulletin of the Geological Society of Greece 40, no. 1 (June 8, 2018): 113. http://dx.doi.org/10.12681/bgsg.16491.

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A physical outcrop, of 100m length and 110 m total thickness studied in combination with sedimentological analysis in detail (stratigraphie sequence, grain size, sedimentological structures) led us to determine the sedimentological environments and the particular subenvironments of each part of the partial stratigraphie sequence which is a proximal depositional environment. The sandstone bed thickness data measured in Mavri Miti area, demonstrates a curved distribution shape in the log-log plots. Where processes such as erosion and bed amalgamation are more significant there was observed a possible deviation from the power-law statistical distributions. The shape of cumulative distribution demonstrates possible proximal fan setting. The above two different approaches shows an agreement in relation to the depositional processes.

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14

Aiello, Gemma, and Mauro Caccavale. "From Siliciclastic to Bioclastic Deposits in the Gulf of Naples: New Highlights from Offshore Ischia and Procida–Pozzuoli Based on Sedimentological and Seismo-Stratigraphic Data." Quaternary 4, no. 4 (December 3, 2021): 44. http://dx.doi.org/10.3390/quat4040044.

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This study discusses the siliciclastic to bioclastic deposits (in particular, the rhodolith deposits) in the Gulf of Naples based on sedimentological and seismo-stratigraphic data. The selected areas are offshore Ischia Island (offshore Casamicciola, Ischia Channel), where a dense network of sea-bottom samples has been collected, coupled with Sparker Multi-tip seismic lines, and offshore Procida–Pozzuoli (Procida Channel), where sea-bottom samples are available, in addition to Sparker seismic profiles. The basic methods applied in this research include sedimentological analysis, processing sedimentological data, and assessing seismo-stratigraphic criteria and techniques. In the Gulf of Naples, and particularly offshore Ischia, bioclastic sedimentation has been controlled by seafloor topography coupled with the oceanographic setting. Wide seismo-stratigraphic units include the bioclastic deposits in their uppermost part. Offshore Procida–Pozzuoli, siliciclastic deposits appear to prevail, coupled with pyroclastic units, and no significant bioclastic or rhodolith deposits have been outlined based on sedimentological and seismo-stratigraphic data. The occurrence of mixed siliciclastic–carbonate depositional systems is highlighted in this section of the Gulf of Naples based on the obtained results, which can be compared with similar systems recognized in the central Tyrrhenian Sea (Pontine Islands).

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15

Maleval, Véronique. "Study of sedimentological budgets in lakes." Zeitschrift für Geomorphologie 50, no. 4 (December 1, 2006): 465–77. http://dx.doi.org/10.1127/zfg/50/2006/465.

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16

Penning-Rowsell, Edmund C., Keith Bevin, and Paul Carling. "Floods: Hydrological, Sedimentological and Geomorphological Implications." Transactions of the Institute of British Geographers 16, no. 1 (1991): 120. http://dx.doi.org/10.2307/622911.

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17

Mukhtarova, M. N., A. K. Nurseytova, S. D. Ermaganbetova, M. T. Beketayeva, E. M. Zulbuharova, A. A. Kuikabayeva, A. K. Danlybayeva, M. T. Kyzgaryna, G. K. Nauryzbayeva, and S. N. Sarsenbayeva. "Sedimentological Method for Nano-Polycomposite Coating." Journal of Engineering and Applied Sciences 14, no. 1 (December 10, 2019): 8–12. http://dx.doi.org/10.36478/jeasci.2019.8.12.

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18

Lisco, S., M. Moretti, V. Moretti, F. Cardone, G. Corriero, and C. Longo. "Sedimentological features of Sabellaria spinulosa biocontructions." Marine and Petroleum Geology 87 (November 2017): 203–12. http://dx.doi.org/10.1016/j.marpetgeo.2017.06.013.

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19

Poesen, Jean. "Floods. Hydrological, sedimentological and geomorphological implications." CATENA 17, no. 4-5 (August 1990): 478. http://dx.doi.org/10.1016/0341-8162(90)90048-i.

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20

Howell, John A., Arne Skorstad, Alister MacDonald, Alex Fordham, Stephen Flint, Bjørn Fjellvoll, and Tom Manzocchi. "Sedimentological parameterization of shallow-marine reservoirs." Petroleum Geoscience 14, no. 1 (February 2008): 17–34. http://dx.doi.org/10.1144/1354-079307-787.

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21

Graf, William L. "Floods: hydrological, sedimentological and geomorphological implications." Earth-Science Reviews 32, no. 3 (April 1992): 204–5. http://dx.doi.org/10.1016/0012-8252(92)90038-u.

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22

Knighton, David. "Floods: Hydrological, sedimentological and geomorphological implications." Journal of Hydrology 131, no. 1-4 (February 1992): 389–91. http://dx.doi.org/10.1016/0022-1694(92)90229-o.

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23

RABAHI, Noureddine, Foued DJAIZ, Nabil DEFAFLIA, Enrico GUASTALDI, and Abdelouahab AMROUNE. "THE VERTICAL DISTRIBUTION OF THE ALLUVIAL CHEMO-FACIES OF BOUMERZOUG WADI, CONSTANTINE, NORTHEASTERN ALGERIA: PALEOENVEROMENTAL SIGNIFICANCE AND CLIMATE EVOLUTION." Analele Universităţii din Oradea, Seria Geografie 31, no. 1 (June 30, 2021): 68–79. http://dx.doi.org/10.30892/auog.311108-865.

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The authorities of Constantine city have been working on the redevelopment and calibration of the Rhumel and Boumerzoug wadis since 2015. The latter calebrage works caused great damage to the banks, thus affecting the Quaternary geological formations in place (alluvial terraces, flood plains). A multidisciplinary research project based on a geomorphological and sedimentological approach was quickly set up to create a scientific data base before their total destruction and loss of physical traces all along the wadis. The present study focuses on the sedimentological and geochemical analysis of the alluvial deposits of Boumerzoug wadi in order to describe the sediments, to reconstitute their nature, and to interpret both the climatic evolution and the paleo-environments of the region. Sedimentological and geochemical results confirm the succession of deposition cycles linked to progressive climate change.

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24

Yang, Hong. "Comparison of Miocene fossil floras in lacustrine deposits: Implications for palaeoclimatic interpretations at the middle latitudes of the Pacific rim." Journal of Palaeosciences 45 (December 31, 1996): 416–29. http://dx.doi.org/10.54991/jop.1996.1263.

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The Early Neogene Shanwang lacustrine deposit in eastern China is similar to the Clarkia deposit of northern Idaho, U.S.A., in age, sedimentary environment, and fossil preservation. Both lake deposits contain well-preserved non-marine fossil biotas, and both are especially rich in plant remains. The two floras shared a high percentage of common genera, and both showed similar taxonomic diversity and habit. The two Miocene floras are comparable to the present-day mixed mesophytic forests of the Yangtze River (Changjiang) Valley of China. Paleoclimatic comparisons are based on plant fossils for the most part, supplemented by information from other fossil groups and from sedimentological data. Evidence from (i) taxonomic associations (both plant and animal), (ii) foliar physiognomy, (iii) taphonomic characteristics, and (iv) sedimentologic data indicate that in the Early Neogene, the two areas experienced similar climatic conditions. The Clarkia area was slightly warmer and more humid compared to a more seasonal climatic regime in the Shanwang area- even though Clarkia was at about 10 degree higher latitude. Our results support the previous hypothesis that paleoclimate in Early to Middle Miocene time was more equable compared to the present day. Our data further suggest that at similar latitudes floras in western North America represent warmer climatic conditions than their Asian counterparts. The comparative study further suggests that the accuracy of paleoclimatic interpretations can be improved by utilizing large fossil floras of taxonomic diversity from similar environments, and by integrating evidence from other fossil groups and sedimentological records.

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25

Holail, H., S. El Beialy, and G. El-Ghazaly. "Sedimentological and palynological characteristics of mangrove sediments, North Qatar." Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 200, no. 3 (July 31, 1996): 309–23. http://dx.doi.org/10.1127/njgpa/200/1996/309.

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26

Shamsuddin, A. A. S., S. Jirin, M. S. F. A. Razak, M. F. A. Kadir, Z. Z. T. Harith, A. F. A. Ghani, and M. Mubin. "The significance of ophiomorpha trace fossils as key sedimentological parameters for paleoenvironment assessment – case example in Klias and Kudat Peninsulas, Sabah." IOP Conference Series: Earth and Environmental Science 1003, no. 1 (April 1, 2022): 012008. http://dx.doi.org/10.1088/1755-1315/1003/1/012008.

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Abstract Trace fossils amongst other sedimentological features are one of the key sedimentological parameters commonly used to assess paleoenvironment. This paper discusses on the occurrence of trace fossil of ichnogenera Ophiomorpha observed in outcrops of Temburong and Belait formations around Klias and Kudat peninsulas. The burrows which are commonly observed at the outcrop sites belong to four ichnospecies: O. rudis, O. annulata, O. recta and O. nodosa. They are variably oriented from vertical to sub-vertical and horizontal, branched to unbranched. In Temburong Formation, O. rudis, O. annulata, O. recta ichnospecies were observed quite commonly which are associated with deep marine environment. Meanwhile, Ophiomorpha nodosa that typically related with shallow-marine trace fossils only observed in Belait Formations. Based on the trace fossil occurrence in conjunction with other sedimentological observations, the paleoenvironment assessment was further improved.

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27

Jacobs, W., M. Eelkema, H. Limburg, and J. C. Winterwerp. "A new radiometric instrument for in situ measurements of physical sediment properties." Marine and Freshwater Research 60, no. 7 (2009): 727. http://dx.doi.org/10.1071/mf08056.

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Information on the sedimentological composition of sediment beds in marine wetlands is important for the study of the complicated interactions between physical, biological and chemical processes. In situ soil sample collection and subsequent laboratory analyses using traditional methods is rather time consuming. The present paper presents the Medusa (Multi Detector system for Underwater Sediment Activity) RhoC system. ‘Rho’ refers to density and ‘C’ to the activity concentration of the decaying isotopes adhered to the sediments. The new instrument directly translates (the attenuation of) natural radioactivity to sedimentological data concerning the depth-averaged sediment composition and vertical density profiles of the upper 15 cm of the sediment bed. The accuracy and applicability of the instrument were assessed to illustrate its potential and limitations. Results from a field campaign on several intertidal flats and from similar measurements in the laboratory for controlled circumstances were compared with data obtained by traditional analyses. The instrument generates accurate results for the depth-averaged sediment composition. Vertical density profiles are also well represented by the RhoC after smoothing and correcting the data for partly saturated soils. Thus, Medusa RhoC is a useful and practical tool to provide accurate sedimentological data in a fast and cost-effective way. The combination of sedimentological relations with the data obtained by RhoC further increases the applicability of the new instrument.

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28

Odedede, O. "Chemostratigraphy of Sediments in Benin West -1, Benin Flank: Paleoenvironmental Implications." Journal of Scientific Research 8, no. 2 (May 1, 2016): 159–69. http://dx.doi.org/10.3329/jsr.v8i2.24236.

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Chemostratigraphical study was carried out on sediments of Benin west -1 well in order to understand their paleoenvironmental setting and geochemical zonations. Six chemozones (CHM 1, CHM 2, CHM 3, CHM 4, CHM 5 and CHM 6) were recognized in the stratigraphic column. Sedimentological attributes and maxima peaks and / or fluctuating trends of Zn, SiO2, K2O, Sr adjudged CHM 3 zone as a potential lowstand systems tract. Synergy of sedimentological and chemostratigraphical fingerprints suggests a marine to distributary channel environment of deposition.

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Peixoto, Herbert Junior Campos, Lizandra Pantoja Baia, Débora Rodrigues Pereira, Marcelo Rollnic, and Sury de Moura Monteiro. "Sedimentological Sectorization Model In An Amazonian Estuary." Journal of Coastal Research 85 (May 2018): 91–95. http://dx.doi.org/10.2112/si85-019.1.

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30

Bynum, Jamar, Andrew Cummings, Autum Downey, Rebecca Englert, Luke Fritz, Maria Sider, Alice Stagner, et al. "Report on the International Sedimentological Congress, Quebec." Sedimentary Record 16, no. 4 (December 31, 2018): 12–13. http://dx.doi.org/10.2110/sedred.2018.4.3.

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31

Shanmugham, G. "The Peer-Review Problem: a sedimentological perspective." Journal of The Indian Association of Sedimentologists 39, no. 1 (June 30, 2022): 3–24. http://dx.doi.org/10.51710/jias.v39i1.243.

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Albert Einstein, one of the greatest physicists of all time, had a deep disdain for peer review. The peer-review process, introduced over a thousand years ago in Syria and fully formalized by the Royal Society of London during 1665-1752, is an integral part of quality control in publishing articles and in awarding research grants. However, there are many lingering problems, which include: 1) anointed experts, 2) blind peer reviews, 3) delays, 4) orthodoxy, 5) bias, 6) groupthink, 7) Peer rejection of ideas (including Nobel-Prize winners), 8) inconsistency, 9) politics, 10) fake peer review and plagiarism, 11) “Sham peer review” in the U.S. medical community, 12) settling old scores, 13) online publications, 14) acknowledgements, 15) controversies in geological sciences, and 16) imbalance of peer reviewers in the biomedical research. Transparency, which is the underpinning trait of science journalism, is lost in the secrecy of blind peer review. Under the blind peer review, there are at least eight examples of scientific papers that were rejected before going on to win a Nobel Prize. Furthermore, there are 33 striking cases of peer rejection in science, including the notorious theory of “continental drift” by Alfred Wegener. My own examples of papers in process sedimentology and petroleum geology show that the same manuscript was rejected by one journal, but was accepted by another, suggesting that the blind peer review is obsolete. A solution is to adopt an Open Peer Review (OPR). Barring an open peer review, an alternative path is to publishing the entire peer-review comments and recommended decisions of all reviewers (anonymous and identified) at the end of a paper. This practice not only would force the anonymous reviewer to be objective and accountable but also would allow the entire peer-review process to be transparent.

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32

MATSUMOTO, Ryo. "Report on the 17th International Sedimentological Congress." Journal of Geography (Chigaku Zasshi) 116, no. 5 (2007): 701–7. http://dx.doi.org/10.5026/jgeography.116.5_701.

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33

Engstrom, Daniel R., and David I. Wright. "Sedimentological Effects of Aeration-Induced Lake Circulation." Lake and Reservoir Management 18, no. 3 (September 2002): 201–14. http://dx.doi.org/10.1080/07438140209354149.

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34

Kidwell, Susan M. "Palaeobiological and sedimentological implications of fossil concentrations." Nature 318, no. 6045 (December 1985): 457–60. http://dx.doi.org/10.1038/318457a0.

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Catto, Norm. "Environmental dynamics and sedimentological response: Selected papers." Quaternary International 250 (February 2012): 1–2. http://dx.doi.org/10.1016/j.quaint.2011.10.001.

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Capello, Marco, Laura Cutroneo, Michela Castellano, Marco Orsi, Andrea Pieracci, Rosa Maria Bertolotto, Paolo Povero, and Sergio Tucci. "Physical and sedimentological characterisation of dredged sediments." Chemistry and Ecology 26, sup1 (June 2010): 359–69. http://dx.doi.org/10.1080/02757541003627746.

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37

Galassi, S., A. Provini, and A. De Paolis. "Organic micropollutants in lakes: A sedimentological approach." Ecotoxicology and Environmental Safety 19, no. 2 (April 1990): 150–59. http://dx.doi.org/10.1016/0147-6513(90)90064-c.

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38

Sebők Szilágyi, Szilvia, and Janos Geiger. "Sedimentological study of the Szőreg-1 reservoir (Algyő field, Hungary): a combination of traditional and 3D sedimentological approaches." Geologia Croatica 65, no. 1 (February 27, 2012): 77–90. http://dx.doi.org/10.4154/gc.2012.06.

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39

Otharán, Germán, Carlos Zavala, Mariano Arcuri, Mariano Di Meglio, Agustín Zorzano, Denis Marchal, and Guillermina Köhler. "Análisis de facies en depósitos de grano fino asociados a flujos de fango. Formación Vaca Muerta (Tithoniano-Valanginiano), Cuenca Neuquina central, Argentina." Andean Geology 47, no. 2 (May 29, 2020): 384. http://dx.doi.org/10.5027/andgeov47n2-3061.

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40

Pedersen, G. K., and M. W. Jeppesen. "Examples of bar accretion in fluvial sand, the Atane Formation, eastern Disko, West Greenland." Rapport Grønlands Geologiske Undersøgelse 140 (December 31, 1988): 38–43. http://dx.doi.org/10.34194/rapggu.v140.8030.

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The aim of the present paper is to supply additional sedimentological observations and to add new details to the existing interpretation of the Atane Formation on eastern Disko. Examples of epsilon cross-bedding reflect formation of point bars and indicate intermittent development of sinuous channels in the coarse-grained braided river. Large tabularsets of planar cross-bedding are interpreted as transverse bars and the coalescerice of two such bars are discussed in detail. The field work was carried out during five days in July 1987 as part of a sedimentological research project supported by GGU and financed by SNF.

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Sharpe, David R., and Peter J. Barnett. "Significance of Sedimentological Studies on the Wisconsinan Stratigraphy of Southern Ontario." Géographie physique et Quaternaire 39, no. 3 (December 4, 2007): 255–73. http://dx.doi.org/10.7202/032607ar.

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ABSTRACTDetailed facies mapping along Lake Erie and Lake Ontario Bluffs, plus other studies illustrate that sedimentological studies, especially those with geomorphic or landform control, have had three main effects on the Wisconsinan stratigraphy of Ontario: (1) improved understanding of depositional processes and environments of several major rock stratigraphic units, without altering the stratigraphic framework, (2) aided correlation of drift sequences, and (3) questioned previous interpretations and stratigraphic correlations of drift sequences. Thus sedimentological analysis can not be separated from stratigraphy because the interpretation of depositional environnments of many mapped strata relies on their geometry and the inclusion of regional data. The geomorphic control provided by sedimentological study of surface landforms is also important because assessment of older buried sediments such as those at the Scarborough Bluffs has been hampered by the failure to determine landform control. The Late Wisconsinan stratigraphy of Southern Ontario generally remains unchanged, except for questions on the role of climate versus ice margin dynamics. The pre-Late Wisconsinan stratigraphy is scarce and not well defined, yet sedimentary studies support the presence of glacial ice in the Ontario Lake basin for all of the Middle Wisconsinan and possibly earlier, including the formation of the Scarborough delta. Large channel cut and fill sequences in the Toronto area (Pottery Road Formation), initially interpreted as resulting from subaerial erosion, were probably formed by subaqueous or subglacial meltwater erosion. If so, the pre-Late Wisconsinan stratigraphy in southern Ontario changes because the Pottery Road Formation may not be an Early Wisconsinan correlative of the St. Pierre beds. The channel example illustrates that stratigraphie correlation without sedimentological investigations may be misleading.

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42

Mahiques, Michel M. de, Marcia C. Bícego, Ilson C. A. Silveira, Silvia H. M. Sousa, Rafael A. Lourenço, and Marina M. Fukumoto. "Modern sedimentation in the Cabo Frio upwelling system, Southeastern Brazilian shelf." Anais da Academia Brasileira de Ciências 77, no. 3 (September 2005): 535–48. http://dx.doi.org/10.1590/s0001-37652005000300013.

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The analyses of Uk'37 paleotemperatures and sedimentological parameters in box cores from the Cabo Frio upwelling zone, southeastern Brazil, were used to understand the modern sedimentation as well as to evaluate the role played by the upwelling process in the sedimentary patterns. Three box-cores located closer to the upwelling area show a general trend of cooling waters taking place in the last 700 years. Since the present upwelling is dependent on local and remote wind regime, a phase of dominating NE winds favors a more effective upward transport of the cold thermocline level South Atlantic CentralWater towards the coast. The intensification in the upwelling regime for the last ca. 700 years can be associated with the strengthening of the NE winds off the area and a possible increase of the Brazil Current mesoscale activity. Nevertheless, the lack of significant correlation of the paleotemperatures and most of sedimentological parameters indicate that upwelling is not the only sedimentation mechanism in the area. Also, the comparison of sedimentological parameters reveals that eventual temporal changes are superimposed by the geographical variability. Sedimentation rates vary from 0.26 mm.yr-1 to 0.66 mm.yr-1.

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43

Crônier, Catherine, and Allart van Viersen. "The ‘Mur des douaniers’, an exceptionally well-preserved Early Eifelian fossil site." Bulletin de la Société Géologique de France 179, no. 1 (January 1, 2008): 89–95. http://dx.doi.org/10.2113/gssgfbull.179.1.89.

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Abstract The ‘Mur des douaniers’ biota at the former French/Belgian border contains a rich and diversified Lower Eifelian benthic fauna, and especially trilobites. Palaeobiodiversity and sedimentological analyses have led to the interpretation of the general palaeoenvironmental/palaeoecological context. This trilobite-rich locality is an exceptionally well-preserved Early Eifelian fossil site with regard to the regional scale. Unfortunately, its growing reputation led to fossil pillage and now this palaeontological site is protected as a Nature Reserve. From now on, no complementary observation of the palaeontological data, the taphonomic analysis, the ichnological, sedimentological and geochemical record can be made to provide a better palaeoecological synthesis.

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Maples, Christopher G., and Allen W. Archer. "Paleoecological and Sedimentological Significance of Bioturbated Crinoid Calyces." PALAIOS 4, no. 4 (August 1989): 379. http://dx.doi.org/10.2307/3514562.

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45

Su, Chih-Chieh, Sheng-Ting Hsu, Huai-Houh Hsu, Jing-Yi Lin, and Jia-Jyun Dong. "Sedimentological characteristics and seafloor failure offshore SW Taiwan." Terrestrial, Atmospheric and Oceanic Sciences 29, no. 1 (2018): 65–76. http://dx.doi.org/10.3319/tao.2017.06.21.01.

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46

Buls, Toms, Kresten Anderskouv, Ida L. Fabricius, Patrick L. Friend, Charlotte E. L. Thompson, and Lars Stemmerik. "Production of Calcareous Nannofossil Ooze For Sedimentological Experiments." Journal of Sedimentary Research 85, no. 10 (October 1, 2015): 1228–37. http://dx.doi.org/10.2110/jsr.2015.80.

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Abstract: The notion of fine-grained pelagic carbonates as uniform, monotonous sequences of sediments settled in a quiescent environment has been challenged over the past few decades. Fine-grained pelagic carbonates can undergo substantial reworking after their first deposition, as illustrated by an abundance of sedimentary structures, such as drifts, moats, sediment waves, and channels documented in the Upper Cretaceous Chalk Group of NW Europe. Despite chalk being a major hydrocarbon reservoir rock of the North Sea, surprisingly little is known about the physical behavior of the pelagic carbonate sediment from which the chalk formed—calcareous nannofossil ooze. This poses a serious challenge to the understanding of the depositional system and the properties of facies distribution. Experimental tests, such as those performed in laboratory flumes, are necessary to provide empirical data on this subject. However, the use of modern calcareous nannofossil ooze as an analogue for Cretaceous ooze is associated with a number of disadvantages such as generally higher noncarbonate content and smaller coccolith size of modern oozes. Here, we document a preparation method for the production of calcareous nannofossil ooze for the purpose of physical experiments, based on disaggregation of Upper Cretaceous chalk through repeated freezing and thawing. We further document the textural characteristics of the ooze compared to the original chalk, based on quantitative backscatter scanning electron image analysis, laser diffraction granulometry, and smear slides. The Upper Cretaceous chalk chosen for disaggregation is highly friable due to delicate contact cement and has a low noncarbonate content (< 2 wt %), a high porosity, friability, and good nannofossil and microfossil preservation. These characteristics allowed an effective disaggregation of the chalk matrix into its basic nannofossil and microfossil components, which show good preservation through the disaggregation process. Textural analysis of chalk used for disaggregation and the produced ooze shows no significant differences between the two, thus validating the use of the freeze–thaw method for production of experimental ooze to model the basic depositional behavior of Cretaceous chalk.

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47

Yudhicara, Yudhicara, and Andrian Ibrahim. "SEDIMENTOLOGICAL PROPERTIES OF THE 2010 MENTAWAI TSUNAMI DEPOSIT." BULLETIN OF THE MARINE GEOLOGY 27, no. 2 (February 15, 2016): 55. http://dx.doi.org/10.32693/bomg.27.2.2012.45.

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Post tsunami survey of the October 25, 2010, Mentawai tsunami, has been carried out by a collaboration team of Indonesian-German scientists from 20 to 28 November 2010. One activity of the researches were investigation on tsunami deposits along the coast following the event that devastated the islands of Sipora, North Pagai and South Pagai. Sedimentological properties of Mentawai tsunami deposit were explained by this study, from both megascopic and laboratory result. In general, beaches along the study area are underlying by a stretch of reef limestone, sediments mostly composed of white sand while grey sand was found only at Malakopa. Tsunami sediments were taken from 20 locations, start from Betumonga at Sipora Island until Sibaru-baru Island at the southern tip of the study area. The thickness of tsunami deposits are ranged between 1.5 and 22 cm, which are generally composed of fine to coarse sand in irregular boundaries with the underlying soil. Based on grain size analysis, variation of sedimentological properties of tsunami deposits range between phi=-0,5793 and phi=3,3180 or very coarse to very fine sand. Tsunami deposits mostly have multiple layers which described their transport processes, run up at the bottom and back wash at the top. Structural sediments such as graded bedding of fining upward, parallel lamination and soil clast were found. The grain size distribution curves show two types of mode peak, unimodal and multimodal which are indication of different sorting condition representing the source materials. While segment grain size accumulative plot generally shows domination of dilatation and traction transport mechanism rather than suspension. In general, very rare fossils were found from Mentawai tsunami deposit, but those findings gave information on how depth tsunami start to scour the seafloor and transport it landward, such as an abundance of Sponge spicule was found which indicate shallow water environments (20-100 m seafloor depth). Keywords: 2010 Mentawai tsunami, tsunami deposit, grain size analysis, fossils identification. Survei pasca-tsunami Mentawai 25 Oktober 2010, telah dilakukan oleh Tim gabungan Indonesia-Jerman pada tanggal 20 - 28 November 2010. Salah satunya adalah melakukan identifikasi endapan tsunami yang ditemukan di sepanjang pantai yang terlanda tsunami di Pulau Sipora, Pagai Utara dan Pagai Selatan. Berdasarkan hasil penelitian baik megaskopik maupun analisis laboratorium, dalam tulisan ini dapat dijelaskan mengenai sifat-sifat sedimentologi dari endapan tsunami Mentawai. Secara umum litologi penyusun pantai di daerah penelitian disusun oleh hamparan batugamping terumbu, sebagian disusun oleh pasir berwarna putih, sedangkan di Malakopa tersusun oleh endapan pasir pantai berwarna abu-abu. Berdasarkan hasil analisis laboratorium, diperoleh variasi sifat sedimentologi, seperti kisaran ukuran butir endapan tsunami antara -0,5793 phi dan 3,3180 phi, yaitu pasir sangat kasar hingga sangat halus. Endapan tsunami umumnya memiliki beberapa lapis yang menunjukkan adanya proses transportasi, seperti saat air naik (run up) di lapisan bagian bawah dan surut di bagian atas, yang ditunjukkan dengan adanya perbedaan ukuran butir. Struktur sedimen ditemukan seperti adanya perubahan besar butir secara berangsur menghalus ke bagian atas, perlapisan sejajar dan fragmen tanah yang terperangkap dalam sedimen. Kurva distribusi ukuran butir memperlihatkan dua jenis model puncak, yaitu unimodal dan multimodal yang memperlihatkan kondisi pemilahan yang berbeda yang menunjukkan kondisi sumber material endapan tsunami, sedangkan grafik akumulasi ukuran butir umumnya memperlihatkan dominasi mekanisme transportasi dilatasi dan traksi daripada suspensi. Secara umum fosil yang terkandung dalam endapan tsunami Mentawai sangat jarang, namun sedikit banyak telah memberikan informasi seberapa dalam gelombang tsunami mulai menggerus lantai samudera dan memindahkannya ke darat, misalnya dengan ditemukannya fosil bentonik Sponge spicule yang melimpah, menunjukkan asal lingkungan laut dangkal dengan kedalaman laut 20-100 m. Kata kunci: Tsunami Mentawai 2010, endapan tsunami, analisis besar butir, identifikasi fosil.

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48

Millar, KR, and P. Gagnon. "Mechanisms of stability of rhodolith beds: sedimentological aspects." Marine Ecology Progress Series 594 (April 26, 2018): 65–83. http://dx.doi.org/10.3354/meps12501.

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49

Kubo, Yu^ ^rsquo;suke, Takamitsu Sugihara, Yukari Kido, and Yoshinori Sanada. "Perspectives of sedimentological analysis in riser drilling expeditions." Journal of the Sedimentological Society of Japan 71, no. 1 (2012): 45–50. http://dx.doi.org/10.4096/jssj.71.45.

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50

Doani, S., K. Albanakis, O. Koukousioura, and K. K. Koliadimou. "SEDIMENTOLOGICAL AND PALAEOENVIRONMENTAL CHARACTER OF LAKE KORONIA SEDIMENTS." Bulletin of the Geological Society of Greece 50, no. 1 (July 27, 2017): 295. http://dx.doi.org/10.12681/bgsg.11730.

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The aim of the present study is to investigate the sedimentological characteristics of Lake Koronia down to a depth of 3.5m below lake bottom. Sampling operations took advandage of a season that the lake bottom was exposed to subaerial conditions. The sedimentological analysis proved that sediments consist of mud to sandy mud, with 2 phases of very fine sand fractions. The proportion of dry organic matter contained into sediment, appears to be generally small while the rates of moisture and volatiles are relatively high. Furthermore, this study examines the distribution of ostracod populations in the sediments of the lake in relation to depth, grain size and other environmental conditions of this water body. Four ostracod species were identified: Candona neglecta, Darwinula stevensoni, Heterocypris spp. and Limnocythere inopinata. The study of freshwater ostracods provides information for the palaeoecological/palaeoenvironmental conditions during the sedimentation.

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