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fence

Overview page. Subjects: Economics.

An option strategy involving either a purchased call and a written put or a written call and a purchased put for the same expiry date (cf. conversion; reverse conversion). Also known as a c...

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fence diagram

Edited by MICHAEL ALLABY.

in A Dictionary of Earth Sciences

January 2008; p ublished online January 2008 .

Reference Entry. Subjects: Earth Sciences and Geography. 50 words.

A three-dimensional depiction of an area, resembling an open area surrounded by a ‘wall’ or ‘fence’, showing the location and

fence diagram

Overview page. Subjects: Earth Sciences and Geography.

A three-dimensional depiction of an area, resembling an open area surrounded by a ‘wall’ or ‘fence’, showing the location and relationships of its sedimentary deposits. The diagram is...

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fence diagram

Michael Allaby.

in A Dictionary of Geology and Earth Sciences

January 2013; p ublished online September 2013 .

Reference Entry. Subjects: Earth Sciences and Geography. 50 words.

A three-dimensional depiction of an area, resembling an open area surrounded by a ‘wall’ or ‘fence’, showing the location and relationships of its sedimentary deposits. The diagram is...

snow fence

Overview page. Subjects: Meteorology and Climatology.

A barrier placed some 15–20 m to windward of a road or railway line. It is generally semi-permeable to the wind and designed to create an eddy immediately behind it, where a snowdrift will...

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cateniform

Overview page. Subjects: Earth Sciences and Geography.

Applied to the form of the corallum which occurs in the tabulate corals (Tabulata). The corallites are elongated and joined side by side to make fence-like structures. In end section they...

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gilgai

Michael Allaby.

in A Dictionary of Geology and Earth Sciences

January 2013; p ublished online September 2013 .

Reference Entry. Subjects: Earth Sciences and Geography. 67 words.

Undulating micro-relief of soils which contain large amounts of clay minerals (e.g. *montmorillonite) that swell and shrink considerably on wetting and drying, to an extent that may be...

Tabulata

Overview page. Subjects: Earth Sciences and Geography.

(subclass Zoantharia)

A Palaeozoic order of zoantharians that are always colonial, never solitary, and that possess small corallites. Tabulae (see tabula) are the major skeletal...

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Beche, Sir Henry Thomas De la (1796–1855), geologist

J. A. Secord.

in Oxford Dictionary of National Biography

September 2004; p ublished online September 2004 .

Reference Entry. Subjects: Geology and the Lithosphere. 2315 words.

Beche, Sir Henry Thomas De la (1796–1855), geologist, was born on 10 February 1796 at Welbeck Street, Cavendish Square, London, the only son of Thomas De la Beche (1755–1801), a brevet...

windbreak

Overview page. Subjects: Meteorology and Climatology.

An artificial barrier to the wind, erected to provide protection to objects on the leeward side. This may be designed to act directly by reducing the force of the wind (as with barriers to...

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Willetts focuses on targeted research to drive growth in the UK

in Astronomy & Geophysics

February 2012; p ublished online February 2012 .

Journal Article. Subjects: Astronomy and Astrophysics; Geophysics. 287 words.

David Willetts, UK Universities and Science Minister, wants the UK to be “the best place in the world to do science” and looks to ring-fenced, albeit limited, science funding through the...

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