The Burnham Chalk Formation (Upper Cretaceous) in Lincolnshire is particularly well exposed at the large disused quarry at North Ormsby and, in north Lincolnshire, at the Ulceby Vale quarry. Biostratigraphical collecting by the author over a period of more than twenty years, in particular at North Ormsby, has yielded a large and varied fauna from the relatively fossiliferous interval between the Wootton Marls and the Ulceby Marl. This fauna is described herein, and is placed within the context of a reconstructed palaeoenvironmental setting.
{"title":"The macrofauna of the Vale House Flints Member (Burnham Chalk Formation, Upper Turonian, Late Cretaceous) of Lincolnshire and a palaeoenvironmental reconstruction","authors":"\tSociety\t\t\tJonathan P. Green","doi":"10.1144/PYGS2017-387","DOIUrl":"https://doi.org/10.1144/PYGS2017-387","url":null,"abstract":"The Burnham Chalk Formation (Upper Cretaceous) in Lincolnshire is particularly well exposed at the large disused quarry at North Ormsby and, in north Lincolnshire, at the Ulceby Vale quarry. Biostratigraphical collecting by the author over a period of more than twenty years, in particular at North Ormsby, has yielded a large and varied fauna from the relatively fossiliferous interval between the Wootton Marls and the Ulceby Marl. This fauna is described herein, and is placed within the context of a reconstructed palaeoenvironmental setting.","PeriodicalId":49665,"journal":{"name":"Proceedings of the Yorkshire Geological Society","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2018-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82070550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The rare cyanotrichite group mineral khaidarkanite is reported here for the first time in the British Isles, derived from highly oxidized, copper-bearing, fluorite-rich veinstone at remote trial workings at Great Sled Dale, Swaledale, North Yorkshire. The khaidarkanite is undoubtedly of supergene origin and appears to have formed in preference to the more common cyanotrichite due to the presence of primary fluorite, which provided the necessary fluorine ions during oxidation of the veinstone.
{"title":"The first British occurrence of khaidarkanite from Great Sled Dale, Angram Common, Keld, Swaledale, North Yorkshire, UK","authors":"\tSociety\t\t\tT. Cotterell, I. Dossett","doi":"10.1144/PYGS2018-007","DOIUrl":"https://doi.org/10.1144/PYGS2018-007","url":null,"abstract":"The rare cyanotrichite group mineral khaidarkanite is reported here for the first time in the British Isles, derived from highly oxidized, copper-bearing, fluorite-rich veinstone at remote trial workings at Great Sled Dale, Swaledale, North Yorkshire. The khaidarkanite is undoubtedly of supergene origin and appears to have formed in preference to the more common cyanotrichite due to the presence of primary fluorite, which provided the necessary fluorine ions during oxidation of the veinstone.","PeriodicalId":49665,"journal":{"name":"Proceedings of the Yorkshire Geological Society","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2018-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76116931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Palynomorph assemblages recovered from five samples of the Hundleby Clay Member of the Claxby Ironstone Formation contain abundant dinoflagellate cysts and miospores (spores and pollen grains). The cyst assemblages are sufficiently diverse to enable an age determination of early Valanginian for all five samples, although it is possible that evidence from the highest two samples indicates a younger age, but no younger than earliest Hauterivian. The miospore assemblage is consistent with these suggestions. A close comparison can be made with palynomorph assemblages from the Speeton Clay Formation at outcrop in East Yorkshire, and indicates a possible correlation with Beds D4–D3 ( Paratollia – Polyptychites ammonite zones), supporting the age determination. The overall composition of the palynological matter recovered from each sample, i.e. their palynofacies, suggests that the whole of the sedimentary succession accumulated in a nearshore marine setting, with deposits at the base of the exposure (samples 1 and 2) reflecting a more distal shelf environment than those from higher up and at the top of the section examined (samples 4, 5 and 3).
{"title":"Palynology of the Lower Cretaceous Hundleby Clay Member of the Claxby Ironstone Formation in eastern England and its biostratigraphic and palaeoenvironmental significance","authors":"\tSociety\t\t\tD. Stead, D. Batten","doi":"10.1144/PYGS2018-006","DOIUrl":"https://doi.org/10.1144/PYGS2018-006","url":null,"abstract":"Palynomorph assemblages recovered from five samples of the Hundleby Clay Member of the Claxby Ironstone Formation contain abundant dinoflagellate cysts and miospores (spores and pollen grains). The cyst assemblages are sufficiently diverse to enable an age determination of early Valanginian for all five samples, although it is possible that evidence from the highest two samples indicates a younger age, but no younger than earliest Hauterivian. The miospore assemblage is consistent with these suggestions. A close comparison can be made with palynomorph assemblages from the Speeton Clay Formation at outcrop in East Yorkshire, and indicates a possible correlation with Beds D4–D3 ( Paratollia – Polyptychites ammonite zones), supporting the age determination. The overall composition of the palynological matter recovered from each sample, i.e. their palynofacies, suggests that the whole of the sedimentary succession accumulated in a nearshore marine setting, with deposits at the base of the exposure (samples 1 and 2) reflecting a more distal shelf environment than those from higher up and at the top of the section examined (samples 4, 5 and 3).","PeriodicalId":49665,"journal":{"name":"Proceedings of the Yorkshire Geological Society","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77165824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Mississippian strata of England and Wales, mainly limestones, are rich in body fossils, but deficient in trace fossils. Herein, a coastal locality rich in the spiral burrow Zoophycos isp. is described from Alnmouth, Northumberland. Although originally reported in 1930, this site and its trace fossils are only illustrated and described in detail for the first time herein. The locality is in the Lower Foxton Limestone, Stainmore Formation, Yoredale Group; Arnsbergian substage, Namurian stage, Mississippian. Zoophycos isp. are common on two bedding planes, the lower of which exposes c . 460 m 2 . Traces are flat, plume-like and preserved in negative epirelief. Spreiten are fine to coarse and outline of the burrow varies from circular to more rectangular. Specimens are numerous, but water-worn and poorly preserved. The Lower Foxton Limestone was likely deposited in a shallow water setting. Trace fossils in Mississippian limestones remain problematic, but this is most probably due to a combination of taphonomic, palaeoenvironmental and collector bias, or a mixture of all three. That is, what is difficult to collect fails to find its way into collections, survey, university, museum or private, and, ultimately, into print. They are there, but they offer many problems for the collector.
{"title":"The trace fossil Zoophycos Massalongo in the Carboniferous (Mississippian) of Alnmouth, Northumberland","authors":"\tSociety\t\t\tS. Donovan","doi":"10.1144/PYGS2018-001","DOIUrl":"https://doi.org/10.1144/PYGS2018-001","url":null,"abstract":"The Mississippian strata of England and Wales, mainly limestones, are rich in body fossils, but deficient in trace fossils. Herein, a coastal locality rich in the spiral burrow Zoophycos isp. is described from Alnmouth, Northumberland. Although originally reported in 1930, this site and its trace fossils are only illustrated and described in detail for the first time herein. The locality is in the Lower Foxton Limestone, Stainmore Formation, Yoredale Group; Arnsbergian substage, Namurian stage, Mississippian. Zoophycos isp. are common on two bedding planes, the lower of which exposes c . 460 m 2 . Traces are flat, plume-like and preserved in negative epirelief. Spreiten are fine to coarse and outline of the burrow varies from circular to more rectangular. Specimens are numerous, but water-worn and poorly preserved. The Lower Foxton Limestone was likely deposited in a shallow water setting. Trace fossils in Mississippian limestones remain problematic, but this is most probably due to a combination of taphonomic, palaeoenvironmental and collector bias, or a mixture of all three. That is, what is difficult to collect fails to find its way into collections, survey, university, museum or private, and, ultimately, into print. They are there, but they offer many problems for the collector.","PeriodicalId":49665,"journal":{"name":"Proceedings of the Yorkshire Geological Society","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2018-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89174976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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