File Download
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1017/S0954102002000196
- Scopus: eid_2-s2.0-0036914895
- WOS: WOS:000181258200012
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: The sedimentary geology, palaeoenvironments and ichnocoenoses of the Lower Devonian Horlick Formation, Ohio Range, Antarctica
Title | The sedimentary geology, palaeoenvironments and ichnocoenoses of the Lower Devonian Horlick Formation, Ohio Range, Antarctica |
---|---|
Authors | |
Keywords | Beacon Supergroup Sedimentology Trace fossils Transantarctic Mountains |
Issue Date | 2002 |
Publisher | Cambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=ANS |
Citation | Antarctic Science, 2002, v. 14 n. 4, p. 395-411 How to Cite? |
Abstract | Six ichnocoenoses in the clastic Devonian Horlick Formation (max. 56 m) confirm the nearshore marine character of eight of the nine lithofacies present. A basal sand sheet overlies a weathered granitic land surface (Kukri Erosion Surface) on Cambro - Ordovician granitoids. The level nature of this surface and the way it cuts across weathering profiles, suggests that the surface had been modified by marine processes prior to deposition. The basal sand sheet (Cross-bedded Sand sheet Lithofacies) contains tidal bundles, and at its top, abundant Monocraterion (Monocraterion Ichnocoenosis). The second sand sheet (Pleurothyrella Lithofacies) is heavily burrowed and shows alternating periods of sedimentation, burrowing, and erosion below wave base as the sea deepened (Catenarichnus Ichnocoenosis). With increasing transgression, finer sediments were deposited (Laminated Mudstone and Feldspathic lithofacies) in an unstable pattern of coarse sandbars and finer troughs (Cruziana-Rusophycus and Arenicolites ichnocoenoses) crossed by active longshore marine channels (Poorly-sorted Lithofacies, Spirophyton Ichnoocoenosis). Short-lived but powerful storms produced thin shelly tempestites (Shell-bed Lithofacies), whereas sporadic, very thin phosphate rich beds (Phosphatic Lithofacies) may have resulted from marine transgressions across the basin. The deepest water is probably represented by sediments of the Spirifer Lithofacies (Rosselia Ichnocoenosis). The Schulthess Lithofacies is regarded as fluvial, deposited in the lower reaches of a river draining a land area that lay towards Marie Byrd Land. Channels in the basal sand sheet indicate movement to the southwest, but orientation became more variable higher in the sequence. Four new measured sections are figured. The relationship of the Ohio Range to the rest of Antarctica during the Devonian is suggested. |
Persistent Identifier | http://hdl.handle.net/10722/42378 |
ISSN | 2023 Impact Factor: 1.8 2023 SCImago Journal Rankings: 0.476 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bradshaw, MA | en_HK |
dc.contributor.author | Newman, J | en_HK |
dc.contributor.author | Aitchison, JC | en_HK |
dc.date.accessioned | 2007-01-29T08:48:20Z | - |
dc.date.available | 2007-01-29T08:48:20Z | - |
dc.date.issued | 2002 | en_HK |
dc.identifier.citation | Antarctic Science, 2002, v. 14 n. 4, p. 395-411 | en_HK |
dc.identifier.issn | 0954-1020 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/42378 | - |
dc.description.abstract | Six ichnocoenoses in the clastic Devonian Horlick Formation (max. 56 m) confirm the nearshore marine character of eight of the nine lithofacies present. A basal sand sheet overlies a weathered granitic land surface (Kukri Erosion Surface) on Cambro - Ordovician granitoids. The level nature of this surface and the way it cuts across weathering profiles, suggests that the surface had been modified by marine processes prior to deposition. The basal sand sheet (Cross-bedded Sand sheet Lithofacies) contains tidal bundles, and at its top, abundant Monocraterion (Monocraterion Ichnocoenosis). The second sand sheet (Pleurothyrella Lithofacies) is heavily burrowed and shows alternating periods of sedimentation, burrowing, and erosion below wave base as the sea deepened (Catenarichnus Ichnocoenosis). With increasing transgression, finer sediments were deposited (Laminated Mudstone and Feldspathic lithofacies) in an unstable pattern of coarse sandbars and finer troughs (Cruziana-Rusophycus and Arenicolites ichnocoenoses) crossed by active longshore marine channels (Poorly-sorted Lithofacies, Spirophyton Ichnoocoenosis). Short-lived but powerful storms produced thin shelly tempestites (Shell-bed Lithofacies), whereas sporadic, very thin phosphate rich beds (Phosphatic Lithofacies) may have resulted from marine transgressions across the basin. The deepest water is probably represented by sediments of the Spirifer Lithofacies (Rosselia Ichnocoenosis). The Schulthess Lithofacies is regarded as fluvial, deposited in the lower reaches of a river draining a land area that lay towards Marie Byrd Land. Channels in the basal sand sheet indicate movement to the southwest, but orientation became more variable higher in the sequence. Four new measured sections are figured. The relationship of the Ohio Range to the rest of Antarctica during the Devonian is suggested. | en_HK |
dc.format.extent | 710984 bytes | - |
dc.format.extent | 25600 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | application/msword | - |
dc.language | eng | en_HK |
dc.publisher | Cambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=ANS | en_HK |
dc.relation.ispartof | Antarctic Science | en_HK |
dc.rights | Antarctic Science. Copyright © Cambridge University Press. | en_HK |
dc.subject | Beacon Supergroup | en_HK |
dc.subject | Sedimentology | en_HK |
dc.subject | Trace fossils | en_HK |
dc.subject | Transantarctic Mountains | en_HK |
dc.title | The sedimentary geology, palaeoenvironments and ichnocoenoses of the Lower Devonian Horlick Formation, Ohio Range, Antarctica | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0954-1020&volume=14&issue=4&spage=395&epage=411&date=2002&atitle=The+sedimentary+geology,+palaeoenvironments+and+ichnocoenoses+of+the+Lower+Devonian+Horlick+Formation,+Ohio+Range,+Antarctica | en_HK |
dc.identifier.email | Aitchison, JC: jona@hku.hk | en_HK |
dc.identifier.authority | Aitchison, JC=rp00658 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1017/S0954102002000196 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0036914895 | en_HK |
dc.identifier.hkuros | 79986 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0036914895&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 14 | en_HK |
dc.identifier.issue | 4 | en_HK |
dc.identifier.spage | 395 | en_HK |
dc.identifier.epage | 411 | en_HK |
dc.identifier.isi | WOS:000181258200012 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Bradshaw, MA=7102745056 | en_HK |
dc.identifier.scopusauthorid | Newman, J=7401659638 | en_HK |
dc.identifier.scopusauthorid | Aitchison, JC=7102533858 | en_HK |
dc.identifier.issnl | 0954-1020 | - |