Geophysical surveys to help map buried igneous intrusions, Snowdonia, North Wales, UK

D. P. Moseley; J. K. Pringle; R. B. Haslam; S. S. Egan; S. L. Rogers; R. Gertisser; I. G. Stimpson; Nigel Cassidy

doi:10.1111/gto.12096

Geophysical surveys to help map buried igneous intrusions, Snowdonia, North Wales, UK

D. P. Moseley, J. K. Pringle, R. B. Haslam, S. S. Egan, S. L. Rogers, R. Gertisser, I. G. Stimpson, Nigel Cassidy

Civil Engineering

Research output: Contribution to specialist publication › Article

Abstract

The geology of the Snowdonia National Park in North Wales comprises a mixture of Lower Palaeozoic shallow marine sediments, acidic igneous rocks and basic intrusions of the Welsh Basin that were subsequently deformed during the Caledonian Orogeny. Thin igneous intrusions are challenging to map due to variable surface exposures, their intrusive origin, structural deformation and burial by glacial sediments. This study used a combination of traditional geological techniques, near-surface geophysical surveys and remote sensing to detect and map a buried dolerite sheet intrusion. Both simple and mathematical analysis of magnetic anomalies and numerical modelling allowed the dolerite position, depths and target widths to be determined. Results showed that calibrated magnetic surveys can characterize buried igneous bodies in such mountainous environments.

Original language	English
Pages	109-115
Number of pages	7
Volume	31
No.	3
Specialist publication	Geology Today
DOIs	https://doi.org/10.1111/gto.12096
Publication status	Published - 12 May 2015

ASJC Scopus subject areas

Geology
Earth-Surface Processes
Palaeontology
Stratigraphy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1111/gto.12096Licence: None: All rights reserved

https://onlinelibrary.wiley.com/doi/full/10.1111/gto.12096Licence: None: All rights reserved

Cite this

@misc{e03eb4ddf35246d3ba7fc1ec35dc6529,

title = "Geophysical surveys to help map buried igneous intrusions, Snowdonia, North Wales, UK",

abstract = "The geology of the Snowdonia National Park in North Wales comprises a mixture of Lower Palaeozoic shallow marine sediments, acidic igneous rocks and basic intrusions of the Welsh Basin that were subsequently deformed during the Caledonian Orogeny. Thin igneous intrusions are challenging to map due to variable surface exposures, their intrusive origin, structural deformation and burial by glacial sediments. This study used a combination of traditional geological techniques, near-surface geophysical surveys and remote sensing to detect and map a buried dolerite sheet intrusion. Both simple and mathematical analysis of magnetic anomalies and numerical modelling allowed the dolerite position, depths and target widths to be determined. Results showed that calibrated magnetic surveys can characterize buried igneous bodies in such mountainous environments.",

author = "Moseley, {D. P.} and Pringle, {J. K.} and Haslam, {R. B.} and Egan, {S. S.} and Rogers, {S. L.} and R. Gertisser and Stimpson, {I. G.} and Nigel Cassidy",

year = "2015",

month = may,

day = "12",

doi = "10.1111/gto.12096",

language = "English",

volume = "31",

pages = "109--115",

journal = "Geology Today",

issn = "0266-6979",

publisher = "Wiley",

}

TY - GEN

T1 - Geophysical surveys to help map buried igneous intrusions, Snowdonia, North Wales, UK

AU - Moseley, D. P.

AU - Pringle, J. K.

AU - Haslam, R. B.

AU - Egan, S. S.

AU - Rogers, S. L.

AU - Gertisser, R.

AU - Stimpson, I. G.

AU - Cassidy, Nigel

PY - 2015/5/12

Y1 - 2015/5/12

N2 - The geology of the Snowdonia National Park in North Wales comprises a mixture of Lower Palaeozoic shallow marine sediments, acidic igneous rocks and basic intrusions of the Welsh Basin that were subsequently deformed during the Caledonian Orogeny. Thin igneous intrusions are challenging to map due to variable surface exposures, their intrusive origin, structural deformation and burial by glacial sediments. This study used a combination of traditional geological techniques, near-surface geophysical surveys and remote sensing to detect and map a buried dolerite sheet intrusion. Both simple and mathematical analysis of magnetic anomalies and numerical modelling allowed the dolerite position, depths and target widths to be determined. Results showed that calibrated magnetic surveys can characterize buried igneous bodies in such mountainous environments.

AB - The geology of the Snowdonia National Park in North Wales comprises a mixture of Lower Palaeozoic shallow marine sediments, acidic igneous rocks and basic intrusions of the Welsh Basin that were subsequently deformed during the Caledonian Orogeny. Thin igneous intrusions are challenging to map due to variable surface exposures, their intrusive origin, structural deformation and burial by glacial sediments. This study used a combination of traditional geological techniques, near-surface geophysical surveys and remote sensing to detect and map a buried dolerite sheet intrusion. Both simple and mathematical analysis of magnetic anomalies and numerical modelling allowed the dolerite position, depths and target widths to be determined. Results showed that calibrated magnetic surveys can characterize buried igneous bodies in such mountainous environments.

UR - http://www.scopus.com/inward/record.url?scp=84929669605&partnerID=8YFLogxK

U2 - 10.1111/gto.12096

DO - 10.1111/gto.12096

M3 - Article

AN - SCOPUS:84929669605

SN - 0266-6979

VL - 31

SP - 109

EP - 115

JO - Geology Today

JF - Geology Today

ER -

Geophysical surveys to help map buried igneous intrusions, Snowdonia, North Wales, UK

Abstract

ASJC Scopus subject areas

UN SDGs

Access to Document

Fingerprint

Cite this