Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Mark Demitroff"'
Autor:
Tomasz Karasiewicz, Piotr Moska, Mark Demitroff, Magdalena Fiłoc, Joanna Rychel, Mirosława Kupryjanowicz, Barbara Woronko, Aleksander Adamczyk
Publikováno v:
Quaternary International. 617:80-100
In Eastern Europe Marine Isotope Stage (MIS) 3 represents a period characterised by severe climate change of very rapid onset, which is recorded in the regional sedimentary record. Hitherto this work, the geomorphic impact of these abrupt changes to
Autor:
Stephen A. Wolfe, Barbara Woronko, Mark Demitroff, Dorota Chmielowska, Michael Dominic Cicali
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
Mark Demitroff
Publikováno v:
Permafrost and Periglacial Processes. 27:123-137
The Pleistocene environment of the New Jersey Pine Barrens has been interpreted as either cool and moist, with boreal forest, or cold and dry, with semi-desert conditions. The presence of ventifacts is often cited as perfunctory evidence for strong P
Publikováno v:
Permafrost and Periglacial Processes. 20:285-294
Sand-wedge casts, soil wedges and other non-diastrophic, post-depositional sedimentary structures suggest that Late-Pleistocene permafrost and deep seasonal frost on the Mid-Atlantic Coastal Plain extended at least as far south as southern Delaware,
Publikováno v:
Permafrost and Periglacial Processes. 18:49-59
Frost fissures, filled with wind-abraded sand and mineral soil, and numerous small-scale non-diastrophic deformations, occur in the near-surface sediments of the Pine Barrens of southern New Jersey. The fissures are the result of thermal-contraction
Publikováno v:
Permafrost and Periglacial Processes. 16:173-186
Publikováno v:
Permafrost and Periglacial Processes. 14:259-274
Relict sand wedges, up to 2.5 m deep and 0.4 m wide, are present in the Pine Barrens of southern New Jersey. They indicate the previous existence of permafrost. The wedges are composed predominantly of sand that shows evidence of wind transport and a
Autor:
Hugh M. French, Mark Demitroff
Publikováno v:
Permafrost and Periglacial Processes. 12:337-350
The ‘frost-thaw’ or thermokarst-lake-basin hypothesis, first invoked by P. E. Wolfe in 1953 to explain the enclosed depressions and shallow basins (‘spungs’) of southern New Jersey, is re-examined. The most probable explanation is that they f
Publikováno v:
Proceedings of the National Academy of Sciences. 110
One or more bolide impacts are hypothesized to have triggered the Younger Dryas cooling at ∼12.9 ka. In support of this hypothesis, varying peak abundances of magnetic grains with iridium and magnetic microspherules have been reported at the Younge
Autor:
Edward K. Vogel, Malcolm A. LeCompte, C. B. Mooney, Alfred W. Seidel, Barrett N. Rock, Dale Batchelor, Mark Demitroff
Publikováno v:
Proceedings of the National Academy of Sciences. 110
In PNAS, M. Boslough (1) raises issues about carbon spherules and nanodiamonds unrelated to our magnetic spherule focused research (2). Boslough should instead address the questions he raises to the appropriate investigators.