Results 171 to 180 of about 2,315 (211)
Some of the next articles are maybe not open access.
Bioerosion, preparation and curation
Geological Curator, 2004The surfaces of fossils commonly preserve shallow-tier bioerosion traces that are of considerable use in palaeoenvironmental interpretation. However, they are often overlooked and are highly susceptible to destruction through mechanical preparation. In this note we encourage preparators and curators to familiarise themselves with these trace fossils ...
Radley, JD, Twitchett, RJ
openaire +1 more source
The role of burrowing sponges in bioerosion
Oecologia, 1975Among the large number of limestone-eroding organisms, sponges, mainly of the family Clinonidae are of special interest because of their efficient means of substratum penetration by cellular etching and because they release characteristically shaped calcium carbonate chips which can be detected in the mud-size fraction of many sediments.
openaire +2 more sources
Bioerosion and biogeomorphology
1992Abstract Bioerosion is a complex set of physical and chemical processes of rock removal, driven by the interrelationships between (1) ‘biological corrosion’, a solutional process (accounting for 10-30 per cent of total erosion) largely engineered by Cyanobacteria, and (2) ‘biological abrasion’, the removal of these micro-organisms and ...
openaire +1 more source
A stratigraphy of marine bioerosion
Geological Society, London, Special Publications, 2004Abstract About 65 ichnogenera and a number of bioerosional trace fossils that are unnamed are catalogued with respect to their stratigraphic ranges. In most cases, corresponding stratigraphic studies of the trace-makers are not possible because (1) the rank of taxonomic ascription is too high to be meaningful and (2) not all ...
openaire +1 more source
Palaeogeography, Palaeoclimatology, Palaeoecology, 1978
Abstract In order to test the usefulness of borings as indicators of palaeoenvironment a number of transects were sampled over a variety of reefs in Bermuda and an analysis was made of the borings and their inhabitants. The borings are described of 25 endolithic species, including sponges, a sea anemone, sipunculids, annelids, bivalves, a gastropod ...
openaire +1 more source
Abstract In order to test the usefulness of borings as indicators of palaeoenvironment a number of transects were sampled over a variety of reefs in Bermuda and an analysis was made of the borings and their inhabitants. The borings are described of 25 endolithic species, including sponges, a sea anemone, sipunculids, annelids, bivalves, a gastropod ...
openaire +1 more source
Current Developments in Bioerosion
Ichnos, 2009Current Developments in Bioerosion, Erlangen Earth Conference Series, Max Wisshak and Leif Tapanila (eds.), 2008, Springer-Verlag, Berlin, XV + 499 pp., ISBN 978-3-540-77597-3, €139.05.
openaire +1 more source
Bioerosive processes in Antarctic seas
Polar Biology, 2001To date, marine boring organisms are not known for the whole Antarctic region, probably because of the scarcity of calcareous substrata. In Terra Nova Bay (Ross Sea), the study of some populations of the scallop Adamussium colbecki allowed us to record a bioerosive activity on carbonates due to a chlorophyte, belonging to the genus Phaeophyla. The same
CERRANO, CARLO +6 more
openaire +2 more sources
Comment on 'Bioerosion, preparation and curation'
Geological Curator, 2005We welcome the recent note by Radley and Twitchett (2004) for bringing one of the more unloved groups of fossils sensu lato into the curatorial limelight. Invertebrate trace fossils in any form, but particularly shallow-tier bioerosion structures, may cause curatorial headaches, and we consider discussion of these problems important in placing them on ...
S.K. Donovan, C. Hensley, D. N. Lewis
openaire +1 more source
Current Developments in Bioerosion
2008Evolution and Classification.- The endolithic guild: an ecological framework for residential cavities in hard substrates.- Evolutionary implications of an exceptionally preserved Carboniferous microboring assemblage in the Buckhorn Asphalt lagerstatte (Oklahoma, USA).- Enigmatic organisms preserved in early Ordovician macroborings, western Utah, USA ...
openaire +1 more source
Bioerosion of shells by terrestrial gastropods
Lethaia, 1999Empty shells of terrestrial gastropods remain intact and become fossilized only under particular conditions. The usually thin shells are readily dissolved by rainwater, a process starting often during life. Results indicate that with this chemical weathering they may lose some 1% in weight per month.
openaire +1 more source

