scholarly journals Palynologic and Lithostratigraphic Research of Lacustrine, Marsh and Fluvial Quaternary Deposits in Rašica Dolina and Mišja Dolina, and on Radensko Polje

Hacquetia ◽  
2007 ◽  
Vol 6 (1) ◽  
pp. 91-101
Author(s):  
Metka Culiberg ◽  
Stevo Dozet
Keyword(s):  
Pollen Analysis ◽  
Carbonate Rocks ◽  
Middle Pleistocene ◽  
Quaternary Sediments ◽  
Quaternary Deposits ◽  
Lithostratigraphic Units ◽  
Lacustrine Clay ◽  
Bottom To Top

Palynologic and Lithostratigraphic Research of Lacustrine, Marsh and Fluvial Quaternary Deposits in Rašica Dolina and Mišja Dolina, and on Radensko Polje The article deals with the results of palynological and stratigraphical research of lacustrine, marsh and fluvial Quaternary deposits in the Rašica dolina and Mišja dolina, and on Radensko polje. Correlation with equivalent Quaternary deposits and their palynoflora from the Grosuplje polje area was also performed. In the study area, Mesozoic, predominantly carbonate rocks are transgressively covered by Quaternary deposits which are in general composed of five lithostratigraphic units (from bottom to top): 1. gravel, 2. grey lacustrine clay, 3. reddish brown loam, 4. light grey marly clay and 5. alluvial marsh deposits. On the basis of pollen analysis the Quaternary sediments of the study area are chronostratigraphically classified to the Late or Middle Pleistocene and Holocene.

Late Wisconsinan glacial stratigraphy and history of southeastern Manitoba

1980 ◽  
Vol 17 (1) ◽  
pp. 19-35 ◽  
Author(s):  
James T. Teller ◽  
Mark M. Fenton
Keyword(s):  
Carbonate Rocks ◽  
Lacustrine Sediment ◽  
Precambrian Rock ◽  
Lake Agassiz ◽  
Rock Fragments ◽  
Lithostratigraphic Units ◽  
Stratigraphic Position ◽  
History Of ◽  
International Boundary ◽  
Late Wisconsinan

The history of Late Wisconsinan glaciation in southwestern Manitoba has been established by identifying and correlating ice-laid lithostratigraphic units in the subsurface. Five Late Wisconsinan tills are defined on the basis of their texture, mineralogic composition, and stratigraphic position. These new formations are, from youngest to oldest, Marchand, Whitemouth Lake, Roseau, Senkiw, and Whiteshell Formations.Late Wisconsinan ice first invaded southeastern Manitoba 22 000 to 24 000 years ago. This Laurentide glacier advanced from the northeast across the Precambrian Shield and deposited the sandy Whiteshell and Senkiw tills, which contain abundant Precambrian rock fragments and minerals and few Paleozoic carbonate grains. Shortly after this, Keewatin ice advanced from the northwest over Paleozoic carbonate rocks, depositing the loamy carbonate-rich Roseau Formation throughout most of the area. This ice remained over southeastern Manitoba until after 13 500 years ago, when it rapidly retreated northward with Lake Agassiz on its heels. Two brief glacial readvances occurred. The first overrode Lake Agassiz lacustrine sediment as far south as central North Dakota shortly after about 13 000 years ago. The clayey Whitemouth Lake till was deposited in southern Manitoba at this time. After a rapid retreat, the ice briefly pushed southward over southeastern Manitoba about 12 000 years ago to just south of the International Boundary. The sandy carbonate-rich Marchand Formation was deposited at this time as the ice overrode its own sandy outwash. By 11 000 years ago, ice had disappeared from southeastern Manitoba.

scholarly journals Geology and Aquifer Sensitivity of Quaternary Glacial Deposits Overlying a Portion of the Mahomet Buried Bedrock Valley Aquifer System

Hydrology ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 69
Author(s):  
Andrew Watson ◽  
Eric W. Peterson ◽  
Dave Malone ◽  
Lisa Tranel
Keyword(s):  
Land Surface ◽  
Late Quaternary ◽  
Geologic Mapping ◽  
Quaternary Deposits ◽  
Aquifer System ◽  
Geologic Materials ◽  
Lithostratigraphic Units ◽  
Glacial Outwash ◽  
Aquifer Sensitivity ◽  
Geologic Data

To characterize the distribution of Holocene and Late Quaternary deposits and to assess the contamination potential of the Mahomet Aquifer, surficial geologic and aquifer sensitivity maps of the Gibson City East 7.5-Minute Quadrangle were created. Geologic data, extent, and thickness of the geologic materials were coupled with LiDAR topographic data and analyzed using ESRI’s ArcGIS 10.6.1. Aquifer sensitivity to contamination was calculated based on the depth to the first aquifer unit, aquifer thickness, and the lithology of the aquifer materials. The surficial geologic mapping identified five lithostratigraphic units: the Cahokia Formation, the Equality Formation, the Henry Formation, and the Yorkville and Batestown Members of the Lemont Formation. The southeast to northwest trending Illiana Morainic System is the most prominent feature in the study area and delineates the maximum extent of the glaciers during the Livingston Phase of glaciation. Postglacial deposits of the Cahokia Formation, alluvium, interfinger, and overlie with glacial outwash of the Henry Formation along channels and drainage ways downslope of the moraine. The areas of least sensitivity are located over the Illiana Morainic System, whereas the greatest potential to contamination occurs where the thickest deposits of the Henry Formation and Cahokia Formation lie at or just below the land surface.

The influence of stratigraphy on the Variation in geotechnical properties of the offshore Quaternary succession, Scotland

1991 ◽  
Vol 7 (1) ◽  
pp. 119-126 ◽  
Author(s):  
B. D. Bone ◽  
D. Long ◽  
M. S. Stoker
Keyword(s):  
Environmental Conditions ◽  
Three Dimensional ◽  
Geotechnical Properties ◽  
Dimensional Structure ◽  
Quaternary Sediments ◽  
Quaternary Deposits ◽  
Offshore Area ◽  
Site Specific ◽  
Three Dimensional Structure ◽  
Geotechnical Studies

AbstractEvidence is presented to show the influence that Sedimentation patterns and environmental conditions have had on the geotechnical properties of Quaternary Sediments in the Scottish offshore area. An understanding of the three-dimensional structure of the Quaternary deposits greatly aids regional geotechnical studies which need to be undertaken before evaluating site specific problems.

The geology and significance of the interglacial sediments at little Oakley, Essex

1990 ◽  
Vol 328 (1248) ◽  
pp. 307-339 ◽  
Keyword(s):  
Late Glacial ◽  
Large River ◽  
Sensu Stricto ◽  
Middle Pleistocene ◽  
Terminal Phase ◽  
Northern Margin ◽  
Lithostratigraphic Units ◽  
History Of ◽  
London Clay ◽  
Geomagnetic Polarity

Subdepartment of Quaternary Research, Botany School, University of Cambridge, Downing Cambridge Downing Street, Cambridge CB2 3EA, U.K. At Little Oakley, near Harwich, an interglacial deposit has been identified and mapped over a distance of ca. 1 km by means of boreholes and from temporary sections. The interglacial sediments are chiefly silts and sands, which occupy a large river channel (150-175 m wide) trending W.S.W.-E.N.E. The channel sediments are variously underlain by London Clay, Red Crag and another fluvial deposit, the ‘Oakley Gravel’ (one of 15 newly defined lithostratigraphic units), against which they also abut on their northern margin. The channel occurs at an elevation of between 18 and 24 m o.D. and is thought, on the basis of clastlithology, to have been occupied by the pre-diversion Thames at a point immediately upstream of its confluence with the Medway. The interglacial deposits are rich in fossils, which indicate accumulation during the pre- and early temperate substages of an early Middle Pleistocene interglacial stage. Pollen spectra from the base of one borehole may possibly relate to the terminal phase of the preceding late-glacial period. The balance of the palaeontological evidence suggests correlation of the main sequence with the Cromerian sensu stricto. The essential facts leading to this conclusion are given here, but detailed discussions of the palaeobotany, vertebrates, molluscs and ostracods are given in a series of separate papers. This correlation gains some support from amino acid epimerization data from the shells of certain aquatic molluscs. Palaeomagnetic measurements, indicating normal geomagnetic polarity, are also consistent with this correlation. The relation of the Little Oakley sequence to the regional geology is discussed, and the palaeogeographic history of the Thames—Medway river systems in this area is briefly reviewed.

scholarly journals Distribution and intensity of glaciotectonic deformation in Denmark

1996 ◽  
Vol 42 ◽  
pp. 175-185
Author(s):  
Peter Roll Jakobsen
Keyword(s):  
High Intensity ◽  
Large Scale ◽  
Geological Survey ◽  
Large Impact ◽  
Well Log ◽  
Quaternary Sediments ◽  
Quaternary Deposits ◽  
Shallow Subsurface ◽  
Good Agreement ◽  
Related Morphology

Glaciotectonic deformation has a large impact on the stratigraphical and lithological variability of Quaternary deposits and the shallow subsurface pre-Quaternary sediments. Mapping of the distribution of glaciotectonic deformation involving pre-Quaternary and interglacial deposits has been carried out, and the density of glaciotectonic deformation analysed, on the basis of data from the well database ZEUS, at the Geological Survey of Denmark. Glaciotectonic deformation is widespread in Denmark. It is recognised in glacial terrains within morphological well-defined glaciotectonic complexes, and in areas with no obvious glaciotectonic related morphology as well as in areas covered with postglacial deposits. The dislocated bedrock is usually not transported for long distances, although rafts of pre-Quaternary bedrock may be transported up to 50 km or more. On a large scale, regions have been located showing high intensity of glaciotectonic deformation. Some of these regions are in good agreement with records from exposures and the geomorphology, others cannot be recognised without well log information.

scholarly journals Continued investigations of Quaternary deposits in the area bounded by Søndre Strømfjord, the Inland Ice, and the Sukkertoppen Ice Cap

1971 ◽  
Vol 35 ◽  
pp. 13-17
Author(s):  
N.W TenBrink
Keyword(s):  
Pollen Analysis ◽  
Organic Material ◽  
Field Work ◽  
Quaternary Deposits ◽  
Marine Deposits ◽  
Ice Cap ◽  
Inland Ice

The 1970 project was a continuation of more general 1969 investigations, some results and the objectives of which were reported by Weidick & Ten Brink (1969). The objectives of 1970 field work were to: (1) accurately determine altitudes and characteristics of marine limits; (2) complete a collection of marine shells and organic material from emerged marine deposits in order to derive a radiocarbon-dated delevelling history; (3) obtain cores of sediments from at least three lakes for pollen analysis and C-14 dating of lake-sea isolation times; (4) map in detail some glacial, glaciofluvial, and marine deposits known from 1969 investigations to be particularly important in reconstruction of Holocene events, and (5) conduct a lichenometric survey on young moraines near the lnland lce in order to estimate ages of the moraines. All the field objectives were achieved, and the results that can be stated before completion of analyses are summarised below.

scholarly journals Quaternary lithostratigraphic units (Belgium)

2002 ◽  
Vol 4 (1-2) ◽  
pp. 153-164 ◽  
Author(s):  
Frans GULLENTOPS ◽  
Frieda BOGEMANS ◽  
Guy De MOOR ◽  
Etienne PAULISSEN ◽  
Albert PISSART
Keyword(s):  
Grain Size ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Time Intervals ◽  
Quaternary Deposits ◽  
Fluvial Deposits ◽  
Lithostratigraphic Units ◽  
Slope Deposits ◽  
Eolian Deposits

The lithostratigraphic classification of the Quaternary deposits is based on the genesis of the sediments. The distinguished environments are marine - estuarine, fluvial, eolian and slope. The marine - estuarine deposits are restricted to certain time-intervals within the Quaternary and are limited to the northern part of Belgium. Fluvial deposits are found throughout the Quaternary. On the basis of the sedimentological - lithological differentials within the Meuse basin and the Schelde basin a bipartite subdivision of the fluvial deposits is introduced. Eolian deposits are differentiated on the basis of their grain size distribution, namely sand and silt. The sandy deposits are accumulated in the northern part of Belgium, whereas loess is deposited in the more southern part of the country. Slope deposits are not restricted regionally neither temporally.

scholarly journals Evaluation of ground information with respect to EPB tunnelling for the Thessaloniki metro, Greece

2007 ◽  
Vol 40 (4) ◽  
pp. 1986
Author(s):  
P. G. Marinos ◽  
M. Novack ◽  
M. Benissi ◽  
G. Stoumpos ◽  
M. Panteliadou ◽  
...  
Keyword(s):  
Quaternary Sediments ◽  
Red Clay ◽  
Quaternary Deposits ◽  
Ground Investigation ◽  
Mechanized Tunnelling ◽  
Tunnel Safety ◽  
Reasonable Choice ◽  
Control Water ◽  
Base Formation

The Thessaloniki Metropolitan Railway comprises two separate ~6 m diameter parallel tunnels with an ~8 km stretch each and 13 stations. The geology of the urban area of Thessaloniki is characterised by the presence of Neogene and Quaternary deposits. The base formation for the project area is a very stiff to hard red clay, dating to Upper Miocene-Pliocene. Upon this formation, Quaternary sediments have been deposited, most of which comprise sand and/or gravel in a clay-silt dominated matrix, covered in places by anthropogenic fill. Ground investigation campaigns incorporated a significant number of sampling boreholes and in situ and laboratory testing. This information was elaborated in order to obtain a better geological understanding and a geotechnical zonation of the ground with respect to mechanized tunnelling. EPB M appears to be the reasonable choice for the project in all aspects of tunnel safety and tunnelling performance. The characteristics and parameters of the soils and the hydrogeological regime directed towards this selection and it is expected that all the objectives, such as settlement and ground movements control, water table level maintenance and adequate performance, will be met by an EPBM provided it is properly operated

scholarly journals As unidades pliocénicas e quaternárias no espaço do Baixo Mondego (uma perspectiva de ordem)

1999 ◽  
pp. 7-17 ◽  
Author(s):  
António Ferreira Soares
Keyword(s):  
Middle Pleistocene ◽  
Archaeological Remains ◽  
Quaternary Deposits ◽  
Upper Pleistocene ◽  
The Holocene ◽  
Espírito Santo ◽  
Lower Pleistocene ◽  
Espirito Santo

Pliocene and Quaternary Units in the Lower Mondego (Portugal) — The analysis of the relations betweenthe quaternary deposits in the Baixo Mondego, as well as their individualisation from others considered asPliocene, still suffer from insufficient reference marks necessary to guarantee equivalencies. The limitis now considered to be in the concert of the Cruz de Morouços Complex, where the Antanhol Formation(= Barracão Group, Upper Pliocene) and the Espírito Santo Conglomerate, equivalent to the GordosConglomerate (Lower Pleistocene), succeed to each other. From the Pleistocene assemblage andbeside the deposits directly associated to the evolution of Mondego (Ameal-Santo Varão and Tentugal-Gabrielos deposits), the deposits revealing upper littoral environments stand out, as the ArazedeSandstone, the Quiaios Sandstone, others deposits directly related with the Cabo Mondego morphogenesis,the Farol Deposits, fossiliferous and possibly from the Lower to Middle Pleistocene and theMurtinheira Deposits from the Upper Pleistocene. In turn the Condeixa Tuffs, with an accommodationspace of 24 Km2 , show an ordered succession of facies (Conglomerates — Cg; yellow mud — Pa, tuffs— Ta and Tc; grey mud with Lymnea — Pc) and an extended age from the Pleistocene (with Elephasantiquus and Hippopotamus incognitus in the base) possibly around the 400 Ka, to the Holocene (faciesPc with roman archaeological remains).

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