Sedimentology and ichnology of a shallow-marine clastic system from the Silurian-Devonian Furada Formation of Asturias, Spain: Benthic response to event deposition and environmental disturbance
| dc.contributor.advisor | Buatois, Luis A | |
| dc.contributor.advisor | Mangano, M G | |
| dc.contributor.committeeMember | Sproat, Colin D | |
| dc.contributor.committeeMember | Dorador, Javier | |
| dc.contributor.committeeMember | Eglington, Bruce | |
| dc.creator | Thue, Katherine L | |
| dc.creator.orcid | 0000-0003-1647-4967 | |
| dc.date.accessioned | 2024-06-28T21:23:27Z | |
| dc.date.available | 2024-06-28T21:23:27Z | |
| dc.date.copyright | 2024 | |
| dc.date.created | 2024-06 | |
| dc.date.issued | 2024-06-28 | |
| dc.date.submitted | June 2024 | |
| dc.date.updated | 2024-06-28T21:23:28Z | |
| dc.description.abstract | The Furada Formation of Asturias, Spain, represents a clastic, wave-dominated shallow-marine unit deposited during the middle Silurian to the Early Devonian. This formation contains abundant evidence of event deposition and non-uniform distribution of bioturbation structures representing a benthic response to multiple stressors. The 170 m-thick succession was measured and described, and the ichnotaxa were recorded and associated with lithofacies. Most shallow-marine environments are characterized by periodic events of environmental disturbance, mainly by episodic deposition, which may be recorded by a change in both the degree of bioturbation and ichnodiversity. The general depositional setting for this formation has been previously interpreted as a wave-dominated and storm-influenced shallow-marine environment. However, sedimentologic features described in this study such as anomalous heterolithic units and fluid mud flow deposits suggest the influence of fluvial discharge, making it a more complex depositional setting. Body fossils are restricted to a single subfacies and include disarticulated and fragmented echinoderms, brachiopods and bryozoans. The trace-fossil assemblages of this formation reflect environmental stress factors introduced by fluvial input (e.g., sedimentation rate, hydrodynamic energy, substrate consolidation), resulting in reduced ichnodiversity and low abundance. The overall trace-fossil content of the Furada Formation is generally representative of the Cruziana Ichnofacies. Integration of sedimentologic and ichnologic datasets allows for a refined depositional interpretation of the formation and greater understanding of the environmental diversity of wave-dominated shallow marine clastic systems, including middle Paleozoic shallow-marine benthos and their responses to event sedimentation and environmental disturbance. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | https://hdl.handle.net/10388/15781 | |
| dc.language.iso | en | |
| dc.subject | Shallow-marine | |
| dc.subject | Sedimentology | |
| dc.subject | Ichnology | |
| dc.subject | Silurian | |
| dc.subject | Devonian | |
| dc.subject | Furada Formation | |
| dc.subject | Cantabrian Zone | |
| dc.title | Sedimentology and ichnology of a shallow-marine clastic system from the Silurian-Devonian Furada Formation of Asturias, Spain: Benthic response to event deposition and environmental disturbance | |
| dc.type | Thesis | |
| dc.type.material | text | |
| thesis.degree.department | Geological Sciences | |
| thesis.degree.discipline | Geology | |
| thesis.degree.grantor | University of Saskatchewan | |
| thesis.degree.level | Masters | |
| thesis.degree.name | Master of Science (M.Sc.) |