Skip to main content

Research Repository

Advanced Search

The influence of low-density granite bodies on extensional basins

Howell, L; Leslie, G; Clarke, S; Mitten, A; Pringle, JK; Egan, S

Authors

L Howell

G Leslie

A Mitten



Abstract

The Carboniferous North Pennine Basin remains the type locality for the ‘block and basin’ tectonic framework model. It has been widely believed that during periods of tectonic extension, large low-density bodies within the basement permit buoyant blocks to resist isostatic subsidence. However, lithosphere-scale structural and geodynamic modelling experiments dispute this; suggesting instead that the formation of intra-basinal highs occurs prior to lithospheric extension. In northern England, this poorly understood tectonic framework is controlled by a combination of tectonic stress, the buoyancy forces of low-density granite, lithospheric flexure and, importantly, the inherited structural framework. It is hoped that further study can lead to a greater appreciation of the interplay of structural and geodynamic process that control the ‘block and basin’ framework.

Acceptance Date Jun 3, 2019
Publication Date Feb 5, 2020
Publicly Available Date Mar 29, 2024
Journal Geology Today
Print ISSN 0266-6979
Publisher Wiley
DOI https://doi.org/10.1111/gto.12297
Publisher URL https://onlinelibrary.wiley.com/doi/abs/10.1111/gto.12297