EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK

EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK

Bibliographic Details
Main Author: Ray, David Christopher
Language:English
Published: University of Cincinnati / OhioLINK 2001
Subjects:
Geology
Geochemistry
WENLOCK SERIES
SILUSION
MIDLAND PLATFORM
K-BENTONITES
STRATIGRAPHY
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=ucin992281267
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-ucin9922812672021-08-03T06:16:16Z EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK Ray, David Christopher Geology Geochemistry WENLOCK SERIES SILUSION MIDLAND PLATFORM K-BENTONITES STRATIGRAPHY The Wenlock Series of the Midland Platform, England, comprise three conformably successive formations, the Buildwas, Coalbrookdale and Much Wenlock Limestone, totalling 291-447m of strata. Though well constrained within the type localities, the graptolite biozonal framework does not provide a clear means of correlation elsewhere on the platform or beyond. Based on the geochemical and geophysical correlation of several K-bentonites, time lines within the basal and uppermost formations have now been established which allow direct correlation across the Midland Platform and the development of a platform wide sea-level curve. From the basal Wenlock there is a clear synchronous regression ( <i>C. centrifugus-C. murchisoni</i> ), represented by the limestones and shales of the Buildwas Formation. The overlying monotonous shales ( <i>M. riccartonensis-C. lundgreni</i> ) of the Coalbrookdale Formation represent a major transgression, though within the southern half of the platform ( <i>?C .rigidus-C. linnarsoni</i> ) regressive sandstones and limestones occur in the middle Coalbrookdale. The successive Much Wenlock Limestone ( <i>G. nassa-M. ludensis</i> ) famous for its rich fauna and bioherms, consists of two shallow water carbonates separated by a deep water shale interval in the northwest part of the platform and a coarser siliciclastic dominated equivalent to the south. Within the type locality at Wenlock Edge, carbonate deposition does not start until the <i>M. ludensis</i> biozone and is associated with localised uplift along the platform margin and the onset of the upper platform-wide regression. The Much Wenlock Limestone-Elton Shale contact appears both conformable and synchronous across the platform, indicating rapid transgression. Sedimentation throughout the Midland Platform can be regarded as being largely eustatically controlled while other factors such as platform slope, siliciclastic input and variations in subsidence are of lesser importance. 2001-10-11 English text University of Cincinnati / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ucin992281267 http://rave.ohiolink.edu/etdc/view?acc_num=ucin992281267 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Geology
Geochemistry
WENLOCK SERIES
SILUSION
MIDLAND PLATFORM
K-BENTONITES
STRATIGRAPHY
spellingShingle Geology
Geochemistry
WENLOCK SERIES
SILUSION
MIDLAND PLATFORM
K-BENTONITES
STRATIGRAPHY
Ray, David Christopher
EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK
author Ray, David Christopher
author_facet Ray, David Christopher
author_sort Ray, David Christopher
title EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK
title_short EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK
title_full EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK
title_fullStr EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK
title_full_unstemmed EVENT AND SUBSURFACE STRATIGRAPHY OF THE WENLOCK SERIES (SILURIAN) MIDLAND PLATFORM , UK
title_sort event and subsurface stratigraphy of the wenlock series (silurian) midland platform , uk
publisher University of Cincinnati / OhioLINK
publishDate 2001
url http://rave.ohiolink.edu/etdc/view?acc_num=ucin992281267
work_keys_str_mv AT raydavidchristopher eventandsubsurfacestratigraphyofthewenlockseriessilurianmidlandplatformuk
_version_ 1719433817528205312

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