Lithostratigraphy of the Staithes Sandstone and Cleveland Ironstone formations (Lower Jurassic) of north-east Yorkshire

Howard, Andrew S.

doi:10.1144/pygs.45.4.261

Cited by 39 publications

(28 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alternatively, high alkalinity during the T-OAE may have been counterbalanced by the accumulation of authigenic carbonate in epicontinental basins, which is a predicted consequence of higher organic matter supply (Sun and Turchyn, 2014). Indeed, authigenic carbonate beds and concretions are particularly common in T-OAE successions (e.g., Howarth, 1962;Bréhéret et al, 2004); a conspicuous carbonate authigenic marker bed notably occurs immediately before the positive limb of the T-OAE CIE in UK (the 'whale stones'; bed 35 of Howarth, 1962;Kemp et al, 2005), SW Germany ('Unterer Stein'; Röhl et al, 2001), S France ('Leptolepis bed', Mailliot et al, 2009;Harazim et al, 2013) and in N Siberia (Suan et al, 2011), possibly representing humongous amounts of CaCO 3 . In any case, the causes of the delayed recovery of carbonate accumulation after the T-OAE should be further scrutinized using micro-paleontological and geochemical data from sites located outside Europe as well as more sophisticated isotope models integrating realistic connections between the calcium, carbon and carbonate cycles.…”

Section: Modeling the Seawater Calcium Isotope Negative Excursions Anmentioning

confidence: 99%

Calcium isotope evidence for dramatic increase of continental weathering during the Toarcian oceanic anoxic event (Early Jurassic)

Brazier

Suan

Tacail

et al. 2015

Earth and Planetary Science Letters

110

View full text Add to dashboard Cite

Section: Modeling the Seawater Calcium Isotope Negative Excursions Anmentioning

confidence: 99%

Calcium isotope evidence for dramatic increase of continental weathering during the Toarcian oceanic anoxic event (Early Jurassic)

Brazier

Suan

Tacail

et al. 2015

Earth and Planetary Science Letters

110

View full text Add to dashboard Cite

“…[12] Upper Pliensbachian and Lower Toarcian sedimentary rocks of the Cleveland Basin, Yorkshire coast, United Kingdom, are well exposed in coastal sections (Figure 1), have been zoned with ammonites, and been subdivided biostratigraphically and lithologically (Figure 2) [Howarth, 1955[Howarth, , 1962[Howarth, , 1973Powell, 1984;Howard, 1985]. The Harpoceras falciferum zone is now the H. serpentinum Zone, and the commune Subzone of the bifrons Zone is now the H. laticosta Subzone [Page, 2004], but older names are retained here to provide a link to the primary literature of most relevance (Howarth [1955] and subsequent authors).…”

Section: Geological Settingmentioning

confidence: 99%

Basinal restriction, black shales, Re‐Os dating, and the Early Toarcian (Jurassic) oceanic anoxic event

et al. 2008

View full text Add to dashboard Cite

[1] Profiles of Mo/total organic carbon (TOC) through the Lower Toarcian black shales of the Cleveland Basin, Yorkshire, United Kingdom, and the Posidonia shale of Germany and Switzerland reveal water mass restriction during the interval from late tenuicostatum Zone times to early bifrons Zone times, times which include that of the putative Early Toarcian oceanic anoxic event. The degree of restriction is revealed by crossplots of Mo and TOC concentrations for the Cleveland Basin, which define two linear arrays with regression slopes (ppm/%) of 0.5 and 17. The slope of 0.5 applies to sediment from the upper semicelatum and exaratum Subzones. This value, which is one tenth of that for modern sediments from the Black Sea (Mo/TOC regression slope 4.5), reveals that water mass restriction during this interval was around 10 times more severe than in the modern Black Sea; the renewal frequency of the water mass was between 4 and 40 ka. The Mo/TOC regression slope of 17 applies to the overlying falciferum and commune subzones: the value shows that restriction in this interval was less severe and that the renewal frequency of the water mass was between 10 and 130 years. The more restricted of the two intervals has been termed the Early Toarcian oceanic anoxic event but is shown to be an event caused by basin restriction local to NW Europe. Crossplots of Re, Os, and Mo against TOC show similar trends of increasing element concentration with increase in TOC but with differing slopes. Together with modeling of 187 Os/ 188 Os and d 98 Mo, the element/TOC trends show that drawdown of Re, Os, and Mo was essentially complete during upper semicelatum and exaratum Subzone times (Mo/TOC regression slope of 0.5). Drawdown sensitized the restricted water mass to isotopic change forced by freshwater mixing so that continental inputs of Re, Os, and Mo, via a low-salinity surface layer, created isotopic excursions of up to 1.3% in d 98 Mo and up to 0.6% for 187 Os/ 188 Os. Restriction thereby compromises attempts to date Toarcian black shales, and possibly all black shales, using Re-Os chronology and introduces a confounding influence in the attempts to use d 98 Mo and initial 187 Os/ 188 Os for palaeo-oceanographic interpretation.

show abstract

“…The unit comprises small-scale coarsening-upward cycles that are capped by bethierine-rich oolitic ironstones (Howard 1985;Young et al 1990), from which moderately well-preserved calcified and pyritized samples were gathered. These samples were supplemented by specimens kindly loaned by the Yorkshire Museum, and understood to be of 'Lias and M. Lias [age] from near Whitby'.…”

Section: S T R a T I G R A P H I C A L D I S T R I B U T I O Nmentioning

confidence: 99%

Lower and middle Jurassic woods of the Cleveland Basin (North Yorkshire), England

Morgans

1999

Palaeontology

View full text Add to dashboard Cite

ABSTRACT. Allochthonous Lower and Middle Jurassic (Pliensbachian-Bathonian) permineralized and charcoalified woods from the Cleveland Basin (North Yorkshire, England) are assigned to five genera of gymnospermous wood (Cupressinoxylon spp., Taxodioxylon spp., Cedroxylon spp., Xenoxylon and Araucarioxylon) and two species (Xenoxylon phyllocladoides and Araucarioxylon lindlei). Cell structure is commonly well preserved, particularly in calcified and charcoalified samples, and several features of the growth rings have palaeoclimatological significance. These include distinct growth rings, commonly narrow latewood, low to moderate annual sensitivity and mean sensitivity values, and presence of false rings. Overall, these characteristics reflect fairly consistent growth, both during the growing season and from year to year. Temporally, there is a transition towards narrower rings of more variable width, proportionally wider latewood, and more abundant false rings in Bathonian woods. Water supply is interpreted as the primary limiting control on growth and was probably more restricted in the Bathonian. This is suggested to be a consequence of relatively low sea-level and, more importantly, a genuinely drier climate at this time, manifested as an accentuated annual dry season. In all, the increase in seasonality during the Early and Mid Jurassic in North Yorkshire is compatible with the effects of a developing Mediterranean-type climate. G R O W T H -R I N G analysis has proved to be a powerful tool in the field of palaeoclimatology (Creber 1977;Creber and Chaloner 1984; Francis 1984 Francis , 1986, particularly when considering that wood (secondary xylem) yields one of the few accurate and high-resolution records of climatic variability on land. Several features of wood anatomy yield climate data, the most fundamental of which is the presence of growth rings, which are invariably indicative of seasonal growth and usually of a temperate climate (Fritts 1976;Creber 1977;Creber and Chaloner 1984, 1985). The relationship between modern tree rings and the meteorological record provides the basis for studying palaeoclimates using fossil wood (Fritts 1976). This approach has proved successful in the interpretation of past climates (e.g. Jefferson 1982; Francis 1984 Francis , 1986Spicer and Parrish 1990) and forms the basis to this study. The object of this paper is therefore to report a detailed record of Lower and Middle Jurassic (Pliensbachian-Bathonian) palaeoclimate for the Cleveland Basin (which today North Yorkshire, England represents) through growth-ring analysis. This analysis is carried out within the context of gymnospermous wood taxonomy. In the absence of a change in latitude for Britain during this period (Ziegler et al. 1993), temporal variations apparent in the growth characteristics may be related to palaeoclimatic changes. This study succeeds in refining the commonly held perception of a warm, wet and subtropical climate during the Mid Jurassic in the Cleveland Basin (e.g. Alexander 1992; Rawson and Wrigh...

show abstract

Lithostratigraphy of the Staithes Sandstone and Cleveland Ironstone formations (Lower Jurassic) of north-east Yorkshire

Cited by 39 publications

References 15 publications

Calcium isotope evidence for dramatic increase of continental weathering during the Toarcian oceanic anoxic event (Early Jurassic)

Calcium isotope evidence for dramatic increase of continental weathering during the Toarcian oceanic anoxic event (Early Jurassic)

Basinal restriction, black shales, Re‐Os dating, and the Early Toarcian (Jurassic) oceanic anoxic event

Lower and middle Jurassic woods of the Cleveland Basin (North Yorkshire), England

Contact Info

Product

Resources

About