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

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

This quantity bargains with these websites chosen as a part of the Geological Conservation evaluate (GCR) in the southern British a part of the Caledonides, that's, the paratectonic Caledonides - a Caledonian terrane with out powerful and pervasive deformation and metamorphism, resembling happened extra north. This orogenic belt shaped via lengthy and complicated approaches of earth events among 500 and 380 million years earlier than the current (?late Cambrian to mid-Devonian times), and has been vintage flooring for geologists for 2 hundred years. it's might be no coincidence that James Hutton in 1795 selected to demonstrate his geostrophic cycle (and unconformity) with 3 visually specific examples of the deformation wrought on reduce Palaeozoic rocks via Caledonian occasions. the previous Caledonian mountain chain, that are visible at the present time in fragmented items in Scandinavia, Britain and eire, and North the US, used to be 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 idea to have lain at the south part of the sea sooner than collision: the remainder of North the US, northern eire, and Scotland are proposal 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

Haunted Hikes: Spine-Tingling Tales and Trails from North America's National Parks

Ghosts! Curses! Hoaxes! Unsolved mysteries! Paranormal occasions! Take a stroll at the creepy aspect of North America's nationwide Parks! Andrea Lankford, a 12-year veteran ranger with the nationwide Park provider, has written a completely investigated but frequently tongue-in-cheek guidebook that takes the reader to the scariest, such a lot mysterious locations within North America's nationwide Parks.

New Orleans (Eyewitness Travel Guides)

Even if you're making plans to go to a urban, a area or a rustic, DK's foolproof 'Eyewitness' method makes studying a few position a excitement in itself. all of the conventional guidebook subject material is covered-descriptions of attractions, starting instances, motels, eating places, purchasing, leisure, word books and so forth- yet, with assistance from especially commissioned illustrations and maps, DK makes crucial details effortless to entry and quickly to soak up.

The Achievement of Wendell Berry. The Hard History of Love

Arguably essentially the most vital American writers operating at the present time, Wendell Berry is the writer of greater than fifty books, together with novels and collections of poems, brief tales, and essays. A popular spokesman for agrarian values, Berry often defends such practices and ideas as sustainable agriculture, fit rural groups, connection to put, the pleasures of labor, and the interconnectedness of existence.

State, Civil Society and Apartheid in South Africa: An Examination of Dutch Reformed Church-State Relations

An exam of the function performed by way of civil society within the legitimisation of South Africa's apartheid regime and its racial coverage. This booklet makes a speciality of the interplay of dominant teams in the Dutch Reformed Church and the South African kingdom over the advance of race coverage in the broader context of state-civil society relatives.

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

Example text

Clearly, the post-D 1 folds accessible location for the study of steeply-plunging have a different origin, more clearly related to folds in the Southern Uplands. These folds, which vary conSiderably in their orientation (plunge), shearing than those discussed here. The origin of these folds is still unexplained and through a total range of 1200 about the vertical, are will undoubtedly be the subject of further research, highly unusual features of slate belts and must be particularly in view of the unusual deformation an important, but as yet poorly understood, characteristics that would be expected as a result feature of the accretionary development of the of the position of these rocks in a possible north-western margin of the Iapetus Ocean.

2C and Leggett et al. (1979). 2B)' The evidence for these faults comes largely from the presence, within the poorly fossiliferous greywackes (of generally Late Uandovery age), of the graptolitic Moffat Shales, (Hartfell, Birkhill, and Glenkiln Shales, of Uandeilo to Uandovery age). The juxtaposition of Moffat Shale slices above, and to the north-west of, the greywackes in the Grennan Bay site requires faults with substantial throws. 2A)' This site is important in its bearing on the structural relationships between the Moffat Shale 'inliers' and the younger Uandovery greywackes of the Central Belt.

11 Southern Uplands contested by Stringer and Treagus (1980) who pointed out that: folds is an obvious target for future work. A second feature of interest here is the apparent presence of a pre-Dl isoclinal fold. Such folds, unrelated to cleavage, or minor structures, have been attributed (Stringer and Treagus, 1980, 1981) to soft-sediment deformation. Again, this feature, as well as those of similar origin described by Knipe and Needham (1986) and Kemp (1987), need to be further studied. Soft-sediment structures need to be more closely related to those in accretionary prisms.

Download PDF sample

Rated 4.84 of 5 – based on 33 votes

About admin