J. E. Treagus (auth.), J. E. Treagus (eds.)'s Caledonian Structures in Britain: South of the Midland PDF

By J. E. Treagus (auth.), J. E. Treagus (eds.)

ISBN-10: 9401050139

ISBN-13: 9789401050135

ISBN-10: 9401122881

ISBN-13: 9789401122887

This quantity bargains with these websites chosen as a part of the Geological Conservation assessment (GCR) in the southern British a part of the Caledonides, that's, the paratectonic Caledonides - a Caledonian terrane with no powerful and pervasive deformation and metamorphism, corresponding to happened extra north. This orogenic belt shaped through lengthy and complicated tactics of earth events among 500 and 380 million years ahead of the current (?late Cambrian to mid-Devonian times), and has been vintage floor for geologists for 2 hundred years. it's maybe no twist of fate that James Hutton in 1795 selected to demonstrate his geostrophic cycle (and unconformity) with 3 visually particular examples of the deformation wrought on decrease Palaeozoic rocks through Caledonian occasions. the previous Caledonian mountain chain, which are noticeable this day in fragmented items in Scandinavia, Britain and eire, and North the USA, was once finally the results of the collision of 2 continental plates and the closure of a former ocean, Iapetus. a few of these fragments, together with these in Scandinavia, southern Britain, and the Republic of eire and the Maritime Provinces of Canada, are inspiration to have lain at the south facet of the sea earlier than collision: the remainder of North the US, northern eire, and Scotland are concept to have lain north of the previous Iapetus.

Show description

Read or Download Caledonian Structures in Britain: South of the Midland Valley PDF

Best south books

Download e-book for kindle: On Independence Creek: The Story of a Texas Ranch by Charlena Chandler

Deep in southwest Texas a creek pours into the Pecos River. since it flows from the west, one could anticipate that even within the rainiest of years it'd be intermittent, yet its movement is regular, and it's the greatest freshwater tributary of the Pecos. because of its trustworthy, spring-fed stream, Independence Creek has had an extended historical past.

A Tour on the Prairies (Western Frontier Library) - download pdf or read online

In 1832, Washington Irving, lately again from seventeen years’ place of dwelling out of the country and wanting to discover his personal nation, launched into an excursion to the rustic west of Arkansas put aside for the Indians. A journey at the Prairies is his soaking up account of that trip, which prolonged from fortress Gibson to the pass Timbers in what's now Oklahoma.

New PDF release: Frommer's Washington, D.C. 2009 (Frommer's Complete)

America’s no 1 bestselling commute sequence Written via greater than a hundred seventy five outspoken tourists world wide, Frommer’s entire publications aid tourists adventure locations the best way locals do. extra each year up-to-date publications than the other sequence 16-page colour part and foldout map in all annual publications Outspoken critiques, certain costs, and prompt itineraries Dozens of particular maps in an easy-to-read, two-color layout you are going to by no means fall into the vacationer traps in case you trip with Frommer's.

Download e-book for kindle: Frommer's Virginia by Bill Goodwin

You are going to by no means fall into the vacationer traps in the event you trip with Frommer's. it is like having a chum convey you round, taking you to the locations locals like most sensible. Our specialist authors have already long gone far and wide you may go--they've performed the legwork for you, and they are now not afraid to inform it love it is, saving you time and cash.

Additional info for Caledonian Structures in Britain: South of the Midland Valley

Example text

At Whithorn Bay the plunge variations are on a larger scale and only become apparent from careful examination of successive outcrops. 1) across the Whithorn Peninsula, may be related to one or more strike-parallel thrusts. This site also reveals from examination of way-up criteria, the presence of an isoclinal fold which pre-dates D j . Such folds have been described from several localities in the Hawick Rocks; they have been interpreted as the products of soft-sediment deformation, developed early in the history of the accretionary prism.

Craig and Walton (1983) have defended their view. The typical features of the Dl deformation in the Hawick Rocks, seen in this site, are very similar to those in other adjacent Llandovery and the Wenlock formations. These features have also been described in papers by Stringer and Treagus (1980, 1981), where this section is mentioned in particular. Most of the characteristics of Southern Upland folding, described by Walton (1983), can be observed in this section. The typical features are: the wavelength, asymmetry, and plunge variations of the folds and the transection of these folds by the Sl cleavage.

They are interrupted by several zones, a few metres wide, of D1 folding. 5-1 m, generally plunge at gentle angles to the north-east, but also exhibit plunges up to 500 NE and 80oSW. The vergence of the folds, in the central outcrops, appears to be neutral, or to the south-east, and this supports the fragmentary evidence of northwesterly younging (assuming that the folds face up). 15 herein) interrupted by the southern fault (at point d) and separated from the succeeding greywackes; this is supported by the observation (McCurry, pers.

Download PDF sample

Caledonian Structures in Britain: South of the Midland Valley by J. E. Treagus (auth.), J. E. Treagus (eds.)


by Richard
4.0

Rated 4.49 of 5 – based on 49 votes