File:The Quarterly journal of the Geological Society of London (1881) (14790545873).jpg

Identifier: quarterlyjourna371881geol (find matches)
Title: The Quarterly journal of the Geological Society of London
Year: 1845 (1840s)
Authors: Geological Society of London
Subjects: Geology
Publisher: London (etc.)
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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ying strata, may be explained by supposingthem to have been so loaded at the root when they were depositedthat their position of flotation was erect. In this way the wholeCoal-measures may have been deposited during a gradual subsidencewithout any of the periods of cessation demanded by those who holdthat coal-seams are the remains of forests which grew in situ* On the assumption that the shore-deposits are submerged forests *of recent age, it has been often held that they indicate a subsidenceof the coast; and writers, in consequence, have had to make the landrise and fall in a very remarkable and erratic manner, when dealingwith the phenomena of raised beaches on the one hand and submerged forests on the other. The view just enunciated sim-plifies matters very considerably, as, according to that, the vegetabledeposits on the shore do not necessarily indicate either a rise or afall of the land in recent times. YPlanFig. A B Ft iBlu-e .Sea■- ^Rmildfr *Dif> of . _ l Fig-1\ SEHIRF.
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WEST CUMBERLAND AND NORTH LANCASHIRE. 39 EXPLANATION OF PLATE III. Plans and Sections illustrating the Interglacial Deposits of West Cumberlandand North Lancashire. Fig. 1. Map of the district, showing the positions in which deposits of woody matter have been found.Figs. 2-4. Map and sections in the Lindal District. 5-7. Plan and sections of the Walney Deposit. 8-11. Plan and sections of Deposit on shore opposite Brigg. 12—14. Plan and sections of Deposit at St. Bees. Discussion. Air. C. Eeid said that in the Cromer Forest bed he had dug upmany stumps of trees asserted to have been in situ, and hadfound them not to be so. He thought that great caution wasneeded in asserting trees to be in situ. They would usually sink ina vertical position with their roots downwards. Sometimes portionsof the soil in which the trees had grown were retained among theroots, and differed entirely from the matrix. Eev. H. H. Winwood pointed out that trees often grew in a soil,but the roots did not pierce

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