Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Peter Crimes"'
Publikováno v:
RUC. Repositorio da Universidade da Coruña
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The Palaeozoic rocks outcropping around Valls are divided into two stratigraphic units. The boundary between both is an unconformity. The lower unit is composed by nearshore platform sediments and a Lower Cambrian age is indicated according to ichnot
Publikováno v:
Journal of Quaternary Science. 13:255-270
The glacial deposits of the eastern Lleyn Peninsula record the advance, coalescence and subsequent retreat and uncoupling of Welsh and Irish Sea ice-sheets during the Late Devensian cold stage. During advance a thick sheet of basal diamict was deposi
Autor:
Thomas Peter Crimes
Publikováno v:
Topics in Geobiology ISBN: 9781489924292
Numerous studies have shown that there is a dramatic increase in the abundance and diversity of trace fossils at about the base of the Cambrian (Seilacher, 1956; Daily, 1972; Crimes, 1975, 1987; Alpert, 1977; Fedonkin, 1980a,b; Brasier, 1982; Urbanek
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1509458cb995e2353aa0c0e8ee47aa06
https://doi.org/10.1007/978-1-4899-2427-8_6
https://doi.org/10.1007/978-1-4899-2427-8_6
Autor:
T. Peter Crimes
Publikováno v:
Geological Journal. 35:134-134
Autor:
Peter Crimes
Publikováno v:
Geological Journal. 30:81-81
Autor:
T. Peter Crimes, Mikhail A. Fedonkin
Publikováno v:
PALAIOS. 9:74
Metazoa evolved in shallow water seas in the late Precambrian, and there was a concomitant increase in abundance and diversity of trace fossils that reached very high levels by the Early Cambrian. There may have been some colonization of deep water,
Autor:
T. Peter Crimes
Publikováno v:
The Paleontological Society Special Publications. 6:76-76
Cambrian deep-sea sediments have yielded few trace fossils. The first moderately diverse suite is found in an Arenig flysch sequence in Eire. There followed a gradual increase in diversity and abundance of trace fossils in deep-sea niches in the Pala
Autor:
N. Chris Hunt, T. Peter Crimes
Publikováno v:
The Paleontological Society Special Publications. 6:77-77
There was a dramatic increase in abundance and diversity of trace fossils in Upper Precambrian and Lower Cambrian shallow water seas. The trace-producing animals rapidly filled all the available niches and in low energy, muddy, environments they evol
Autor:
Peter Crimes, T.
Publikováno v:
Geological Magazine; Mar1987, Vol. 124 Issue 2, p97-119, 23p