Zobrazeno 1 - 10 of 15 pro vyhledávání: '"Ulla Asgaard"'
1
Scolicia and its producer in shallow-marine deposits of the Miocene Chenque Formation (Patagonia, Argentina): functional morphology and implications for understanding burrowing behavior
Autor: Juan José Ponce, M. Gabriela Mángano, Eduardo S. Bellosi, Noelia Beatriz Carmona, Luis A. Buatois, R. G. Bromley, Ulla Asgaard
Publikováno v: RID-UNRN (UNRN)
Universidad Nacional de Río Negro
instacron:UNRN
Fil: Carmona, Noelia Beatriz. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina. Fil: Mángano, Gabriela. Department of Geological Sciences, University of Saskatchewan, 114 Science Pl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bec0d69584adc24c9b94247da96df851
http://rid.unrn.edu.ar/handle/20.500.12049/9057
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2
Experimental study of sediment structures created by a spatangoid echinoid, Echinocardium mediterraneum
Autor: Ulla Asgaard, Margit Jensen, Richard G. Bromley
Publikováno v: Proceedings of the Geologists' Association. 108:183-189
Five narrow aquaria were filled with artificially laminated sediment and buried in the shallow sea floor at Kephallinia, Greece. A single individual of Echinocardium mediterraneum was placed in each aquarium and allowed 5 days to bioturbate the sedim
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25b0fd07e73ddc5ffdda4d138cfec41a
https://doi.org/10.1016/s0016-7878(97)80026-0
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4
Endolithic community replacement on a Pliocene rocky coast
Autor: Richard G. Bromley, Ulla Asgaard
Publikováno v: Ichnos. 2:93-116
A limestone karst topography on the island of Rhodes, Greece, was flooded by a tectonically dominated transgression starting in late Pliocene time. Surfaces in contact with seawater were sculptured by communities of boring and rasping organisms. A ra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::512eb320495fd578712d53e15a0e0a33
https://doi.org/10.1080/10420949309380081
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5
Ichnofacies: a mixture of taphofacies and biofacies
Autor: Richard G. Bromley, Ulla Asgaard
Publikováno v: Lethaia. 24:153-163
The environmental significance of individual ichnofacies has become a point of debate, and the Scoyenia ichnofacies is not clearly defined. Removal of the marine/non-marine boundary from ichnofacies definitions, as well as the bathymetry control, wou
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34fef19bbc02a0eecf38a4755d98af71
https://doi.org/10.1111/j.1502-3931.1991.tb01463.x
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6
Echinometrid sea urchins, their trophic styles and corresponding bioerosion
Autor: Richard G. Bromley, Ulla Asgaard
Publikováno v: Current Developments in Bioerosion ISBN: 9783540775973
The Echinometridae is a diverse, largely tropical family of echinoids. Several species are active borers in shallow water, at and below the low-tide line, especially in coral reef and beachrock substrates, commonly in high-energy situations. In the C
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ac45b4534d63ab49e8ded12a9169053
https://doi.org/10.1007/978-3-540-77598-0_15
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9
Two bioerosion ichnofacies produced by early and late burial associated with sea-level change
Autor: Ulla Asgaard, Richard G. Bromley
Publikováno v: Geologische Rundschau. 82
In bioerosion, as in trace fossils as a whole, deeply emplaced structures have greater survival value than shallow structures. That is to say, tiering (the relative depth to which rasping, etching and boring organisms penetrate their substrate) is of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6b3b2e35da387eceef9d6f4aae865af
https://doi.org/10.1007/bf00191833
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