Results 121 to 130 of about 2,967 (157)

A method of sampling clast-rich laminated diamictons for magnetic analyses

Canadian Journal of Earth Sciences, 1989
The sampling of nonlithified diamictons for magnetic analyses (anisotropy of magnetic susceptibility and paleomagnetic remanence) has been restricted to samples that are either massive, clay-rich sediments, or fine-grained ones with very low pebble contents.
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Distinction Between Tills and Other Diamictons Based on Textural Characteristics

SEPM Journal of Sedimentary Research, 1968
ABSTRACT Statistical parameters of the granule-to-clay size-frequency distribution efficiently differentiate till from alluvial-fan deposits and from outwash deposits. Discriminant functions utilizing mean, standard deviation, skewness, and kurtosis also separate the three types of sediment.
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Soft-sediment striated surfaces and massive diamicton facies produced by floating ice

1994
Abstract Soft-sediment striated surfaces, commonly associated with massive diamictites, have been described from many pre-Quaternary glacial sedimentary sequences around the world. A number of authors interpret these associations as evidence for a subglacial origin. However, soft-sediment striated surfaces are formed by the mechanical scouring action
C.M.T. Woodworth-Lynas, J.A. Dowdeswell
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A comparison of mineral magnetic, geochemical and mineralogical techniques for compositional studies of glacial diamictons

Boreas, 1996
Data from heavy mineral analysis, X‐ray fluorescence spectrometry (XRF) and X‐ray diffractrometry (XRD) are compared with those obtained from mineral magnetic analysis for a range of glacial diamicton samples taken from the Quaternary sequence in the Isle of Man. These data show that the mineral magnetic approach offers a useful means of characterizing
JOHN WALDEN, JOHN P. SMITH, ROGER V. DACKOMBE   +2 more
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Characterization of diamictons on the basis of their mineral magnetic properties in Murchisonfjorden, Nordaustlandet, Svalbard

Sedimentary Geology, 2011
Abstract Different grain-size fractions of 12 lithologically defined and 2 non-defined Weichselian glacial stage diamicton units from Nordaustlandet, Svalbard were studied for their mineral magnetic properties. The applied measurements included magnetic susceptibility (χ), anhysteretic remanent magnetization (ARM), saturation isothermal remanent ...
A.E.K. Ojala, F. Kubischta, A. Kaakinen, V.-P. Salonen   +3 more
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Lacustrine ostracodes in the Late Pleistocene Sunnybrook diamicton of southern Ontario, Canada: Discussion

Canadian Journal of Earth Sciences, 1988
It was with great interest that I read the recent article by Westgate, Chen, and Delorme reporting on the discovery of ostracode fossils in the Sunnybrook diamicton in the MetroToronto region of southern Ontario. I have followed the ongoing controversy surrounding the interpretations of the depositional origin of the sediments in the Metro-Toronto area,
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Magnetic and pebble fabrics of glaciomarine diamictons in the Champlain Sea, Ontario, Canada

Canadian Journal of Earth Sciences, 1985
Glaciomarine diamicton(ite)s that contain articulated unbroken shell remains are usually assumed to have been deposited by the settling out of suspended mud with additions of coarse clasts derived from the melting of debris-laden floating ice. However, little is known about the magnetic and pebble fabrics of these composite sediments, and the purpose ...
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Evidence of cryostatic desiccation processes associated with sand intraclasts within diamictons, southern Ontario, Canada

Canadian Journal of Earth Sciences, 1990
Shore bluffs at Mohawk Bay, southern Ontario, reveal, within a complex mélange of glacial sediments, brecciated diamicton surrounding sand-block intraclasts. Typically, each intraclast has an aureole (50–65 cm) of brecciated diamicton. It is thought that a causal link exists between the origin of the intraclasts and the deposition of the diamicton.
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Loading of a large diamicton mass in glacial Lake Maumee III sediments, southwestern Ontario

Canadian Journal of Earth Sciences, 1987
An 8 m long pod-shaped mass of deformed diamicton and sand occurs in Lake Maumee III glaciolacustrine sediments of the Port Stanley Drift, near Port Bruce, Ontario. Sedimentary structures observed in the diamicton mass and enclosing sands indicate large-scale loading accompanied their deposition.
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Diamicton

2021
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