The tertiary section at Shorne Wood, Cobham, Kent

Chandler, Raymond

doi:10.1016/s0016-7878(23)80005-0

Cited by 4 publications

(5 citation statements)

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“…In areas with least erosion below the Thames Group the Woolwich and Reading succession shows two tongues of Woolwich Shell Beds and two or three tongues of Reading Mottled Clays (Hester, 1965). Eastwards, where the Blackheath and Oldhaven overstep intensifies, only the lower tongue of Woolwich Shell Beds is preserved, and this is the case at Cobham (Chandler, 1923).…”

Section: Methodsmentioning

confidence: 99%

“…The sand and mud unit is overlain, conformably in succession, by the Cobham Lignite Bed and the lower Woolwich Shell Beds. Above an unconformity these are succeeded by Blackheath Beds, then further east in the outlier by thin Oldhaven Beds and basal London Clay Formation (Chandler, 1923;Collinson and Hooker, personal observation). Since formalization of the interdigitating Woolwich and Reading Formations as distinct from the Upnor Formation, which were all once included in the "Woolwich and Reading Beds" (Ellison et al, 1994), the Cobham Lignite Bed and underlying sand and mud unit have remained unattributed to any formation.…”

Section: Lithological Succession At Cobhammentioning

confidence: 99%

“…Following the Second World War, local companies attempted commercial mining of this bed (Anon., 1948) but, having proved uneconomical due to the limited thickness of lignite, the mine closed, probably in late 1948. The Cobham Lignite was exposed as a bed up to 1 m thick during construction of the A2 road (Chandler, 1923), and again by improvements to that road in 1964 (Martin, 1976). Four samples taken by Bill Chaloner in 1964, from a 60 cm thick exposure of this lignite, were subsequently studied by Martin (1976), who described Salvinia and Azolla megaspores and microspore massulae, and gave a brief overview of the palynology.…”

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confidence: 99%

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Cobham lignite bed and penecontemporaneous macrofloras of southern England: A record of vegetation and fire across the Paleocene-Eocene Thermal Maximum

Collinson¹,

Hooker²,

Groecke³

2003

Causes and Consequences of Globally Warm Climates in the Early Paleogene

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Section: Methodsmentioning

confidence: 99%

Section: Lithological Succession At Cobhammentioning

confidence: 99%

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confidence: 99%

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Cobham lignite bed and penecontemporaneous macrofloras of southern England: A record of vegetation and fire across the Paleocene-Eocene Thermal Maximum

Collinson¹,

Hooker²,

Groecke³

2003

Causes and Consequences of Globally Warm Climates in the Early Paleogene

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“…and J.J.H.). The Cobham outlier is unusual in showing a thickness of lignite increasing from 0.15 m at the western outcrop edge (Chandler 1923;Martin 1976) to 2 m at Scaler's Hill, the study site. The apparently very localized thickening, together with minor faulting in the underlying sand and mud unit, suggests a locally subsiding area at Cobham.…”

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confidence: 93%

Episodic fire, runoff and deposition at the Palaeocene–Eocene boundary

Collinson

Steart

Scott

et al. 2007

JGS

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Qualitative and quantitative coal petrological analyses have been undertaken on the laminated lignite at the base of the Cobham Lignite Bed, from Scalers Hill, Kent, England. The maximum negative carbon isotope excursion, which marks the beginning of the Palaeocene-Eocene thermal maximum (PETM), occurs near the top of the laminated lignite. The lignite contains inertinite, a petrographic term used to describe charcoal. The laminated lignite has inertinite-rich and inertinite-poor layers indicative of episodic fires and post-fire erosion. Charcoal clasts are derived from living or recently senesced plants and are dominated by the leaf stalks of herbaceous ferns and wood fragments from flowering plants. The charcoal assemblage reflects a low-diversity flora, possibly adapted to disturbance by fire, derived from a source vegetation subjected to seasonal surface wildfires. The environmental conditions leading up to and across the onset of the PETM are, therefore, interpreted as incorporating a persistent fire regime with episodic wildfires followed by rainfall and runoff events. Abundant charcoal indicates near-modern oxygen levels whereas the absence of charred peat in this area calls into question previous suggestions that burning of Palaeocene peats might have contributed to the short-lived negative carbon isotope excursion at the Palaeocene-Eocene boundary.

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“…Since the first account of fossi plants from the Woolwich and Reading Beds by Hooker (l&54), various authors have noted the occurrence of plant remains in these deposits (Whitaker, 1872;R. H. Chandler, 1923;Hawkins, 1946Hawkins, , 1955.…”

Section: Introductionmentioning

confidence: 99%