Tertiary spores and pollen

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Journal Article
Published: 01 October 1956
Micropaleontology (1956) 2 (4): 313-319.
Journal Article
Published: 01 June 1955
Journal of Sedimentary Research (1955) 25 (2): 136-A-137.
Journal Article
Journal: Palynology
Published: 01 October 1980
Palynology (1980) 4 (1): 181-196.
Journal Article
Published: 01 April 1967
Micropaleontology (1967) 13 (2): 204-216.
... of the pre-Quaternary pollen and spore content does not vary substantially. The material is probably mainly early Tertiary and older, presumably originating in the Kattegat area. The Quaternary pollen and spore content is also uniform. It probably came from older tills with a high content of interglacial...
Journal Article
Journal: Palynology
Published: 01 June 2010
Palynology (2010) 34 (1): 3-42.
... a phytogeographic point of view the Tendaguru locality belongs to the southern Gondwana Trisaccates Province because of the presence of trisaccate podocarpaceous pollen. The quantitative composition of the palynofloras is characterized by the dominance or abundance of pollen produced by the two conifer families...
FIGURES | View All (17)
Series: GSA Special Papers
Published: 01 January 1987
DOI: 10.1130/SPE209-p17
... in composition from one to as many as five sandstone beds with interbeds of siltstone or mudstone. Dinosaur bone has been found within the Ojo Alamo at several sites in the western part of the basin. Paleocene pollen has been found within the Ojo Alamo in the eastern part of the basin. To date, no Cretaceous...
Series: GSA Special Papers
Published: 01 January 1970
DOI: 10.1130/SPE127-p65
... in plant microfossils. Many Cretaceous species vanish and new species appear in the Paleocene. In both regions the Paleocene yields fewer species than does the underlying Cretaceous. A pronounced difference exists between the Late Cretaceous pollen and spore floras of the two regions. The spore-pollen...
Journal Article
Journal: Palynology
Published: 01 October 1989
Palynology (1989) 13 (1): 79-90.
Journal Article
Published: 01 April 1971
Micropaleontology (1971) 17 (2): 221-232.
Journal Article
Published: 01 April 1988
Canadian Journal of Earth Sciences (1988) 25 (4): 512-527.
... or Maastrichtian dinoflagellate cysts; however, these cysts and other marine fossils are absent from the Tertiary samples, indicating that the Tertiary strata are nonmarine. Our latest Cretaceous and early Tertiary samples contain abundant spores and pollen grains and can be readily dated by reference to well...
Series: GSA Memoirs
Published: 01 January 1993
DOI: 10.1130/MEM182-p443
... Approximately 185 types of pollen grains and spores have been identified from 13 Tertiary formations in the Gulf/Caribbean region (northern Latin America), providing a revised data base for a published palynostratigraphy for the area. Such forms as Magnastriatites howardii (= the modern...
Series: GSA Special Papers
Published: 01 January 1982
DOI: 10.1130/SPE190-p423
... at the base of thin coal beds, across a thickness span of only a few cm and at the same level at which several species of Cretaceous pollen become extinct and the ratio of angiosperm pollen to fern spores drops sharply. The Ir surface density ranges from 8 to 40 × 10 −9 g cm −2 . In the York Canyon core...
Journal Article
Published: 01 September 2004
Journal of Sedimentary Research (2004) 74 (5): 620-630.
... of the Niigata and Akita backarc basins, central Japan. Our primary analytical tool is a ternary diagram with apexes consisting of woodycoaly organic matter, herbaceous with pollen and spores, and amorphous organic matter (AOM) with alginite (organic-walled marine microfossils). The composition of kerogen plots...
FIGURES | View All (7)
Series: DNAG, Geology of North America
Published: 01 January 1991
DOI: 10.1130/DNAG-GNA-E.435
EISBN: 9780813754505
... on Meighen Island. However, spores and pollen are abundant throughout the Cenozoic and in the Campanian-Maastrichtian sediments of similar facies that lie conformably beneath the Cenozoic section. Palynostratigraphic studies therefore form the main chronostratigraphic basis for the largely nonmarine...
Journal Article
Journal: AAPG Bulletin
Published: 01 February 1962
AAPG Bulletin (1962) 46 (2): 271-272.
... are no longer viewed with disfavor. As far as the necessary laboratory preparation and study are concerned, diatom samples can be prepared and significant species identified at least as expeditiously as samples containing pollen and spores. Distinctive diatom assemblages are known from the Moreno Shale of Late...
Journal Article
Journal: Palynology
Published: 01 November 2016
Palynology (2016) 40 (3): 322-342.
... on slides for pollen analysis. For each sample, we counted at least 300 pollen grains. The calculated pollen sum includes trees, shrubs and herbs. Fern spores were also counted and expressed as percentages of the pollen sum. Pollen and spore identification was based on large reference collections...
FIGURES | View All (5)
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1988
AAPG Bulletin (1988) 72 (3): 277-298.
... material, opaque organic matter, cuticles, pollen and spores, and minor amorphous organic matter. The geochemistry, petrology, palynofacies, and distribution data indicate a predominantly terrestrial and detrital source of the organic matter irrespective of facies, formation, or age. The distribution...
FIGURES | View All (20)
Journal Article
Journal: GSA Bulletin
Published: 01 September 1987
GSA Bulletin (1987) 99 (3): 325-330.
... ppb and corresponds to the base of a coal and to a floral-extinction event at the three localities. Immediately above the iridium-peak anomaly, angiosperm pollen is conspicuous in the assemblage, in contrast to the fern-spore spike described for sections in the mid-continental United States...
Journal Article
Journal: Geology
Published: 01 October 1982
Geology (1982) 10 (10): 547-551.
...Rosemary A. Askin; David H. Elliot Abstract Recycled palynomorphs in the Tertiary Seymour Island Group, Antarctic Peninsula, include more than 25 spore and pollen species well known in Gondwana rocks of Permian and Triassic age. Their relative abundance and the lack of associated recycled marine...