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Subject = Strain analysis;
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Displaying Results 1 - 2 of 2 on page 1 of 1
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Application of semi-automated strain analysis techniques and anisotropy of magnetic susceptibility in fold and thrust belts
(2014)
McCarthy, Dave J.
Application of semi-automated strain analysis techniques and anisotropy of magnetic susceptibility in fold and thrust belts
(2014)
McCarthy, Dave J.
Abstract:
Quantitative analysis of penetrative deformation in sedimentary rocks of fold and thrust belts has largely been carried out using clast based strain analysis techniques. These methods analyse the geometric deviations from an original state that populations of clasts, or strain markers, have undergone. The characterisation of these geometric changes, or strain, in the early stages of rock deformation is not entirely straight forward. This is in part due to the paucity of information on the original state of the strain markers, but also the uncertainty of the relative rheological properties of the strain markers and their matrix during deformation, as well as the interaction of two competing fabrics, such as bedding and cleavage. Furthermore one of the single largest setbacks for accurate strain analysis has been associated with the methods themselves, they are traditionally time consuming, labour intensive and results can vary between users. A suite of semi-automated techniques have ...
http://hdl.handle.net/10468/1974
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Characterising the role of basin margin structure on finite strain patterns across a cleavage front from the Variscides of southern Ireland
(2017)
Parker, Chloe Rowena
Characterising the role of basin margin structure on finite strain patterns across a cleavage front from the Variscides of southern Ireland
(2017)
Parker, Chloe Rowena
Abstract:
The northern margin of the Munster Basin has been traditionally placed at the Dingle Dungarvan Line (DDL), a line which runs through Dingle Bay in the west and coincides with the Kilarney Mallow Fault (KMF) further to the east, on the Iveragh Peninsula, southwest Ireland. This region lies at the northern boundary of the Rhenohercynian Zone of the European Variscides. Deformation of 7 km+ Upper Devonian continental clastic sequence and overlying Carboniferous marine carbonate/clastic sequence at the end of the Carboniferous is thought to have consisted of an initial phase of layer parallel shortening, followed by folding, ongoing cleavage development and late stage accommodation thrusting. Previous models of inversion at the northern margin consist of an initial extensional bounding fault subsequently reactivated as a reverse fault during Variscan compression, with resulting higher strain to the south in the Munster Basin and lower strain to the north in the Foreland Zone. These prev...
http://hdl.handle.net/10468/6309
Displaying Results 1 - 2 of 2 on page 1 of 1
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