2015

NS3778 : Possible test pit

taken 9 years ago, near to Renton, West Dunbartonshire, Scotland

This is 1 of 5 images, with title Possible test pit in this square
Possible test pit
Possible test pit
Three similar pits are arranged in an E-W line of about 15 metres here. This one, now partly water-filled, is the middle pit. They were perhaps test pits.

In the satellite map linked from the end-note, this site is indicated by a light blue marker pin, labelled "Quarry Pit 8". See LinkExternal link for a zoomed-in view that is centred on that marker. The other two pits of the three can be seen flanking this one on the east and west.
Carman Muir: outcrops and old quarry pits

See Link (in a Geograph article) for further information, and LinkExternal link for an annotated satellite view on which various features of geological interest (as well as traces of associated industries and other antiquities) are marked, as described below.

The topography of the parts of Carman Muir to the south of Cardross Road is determined to a large extent by cornstone deposits, which outcrop in places. Cornstone is an impure granular limestone, a fossil soil. Old quarry pits (probably worked before the nineteenth century) and possible test pits can be seen along the lines of these deposits; they are indicated by light blue marker pins on the annotated satellite view, and the cornstone outcrops are marked by orange pins.

This area, lying to the south of Cardross Road, exemplifies what the British Geological Survey refers to as the Kinnesswood Formation (see LinkExternal link at the BGS website for more information); this formation contains cornstone deposits.

Beside and to the north of Cardross Road are outcrops of sandstone rather than cornstone. The sandstone is best seen along a line of outcrops and pits beside the road (these are indicated by reddish marker pins on the annotated satellite view). Another prominent example lies at the ENE end of that line: a large disused red sandstone quarry, the old Fairy Knowe Quarry (later known as Carman Quarry) – Link – at NS36967900. This area beside and to the north of the road exemplifies the Stockiemuir Sandstone Formation (see LinkExternal link at the BGS website for further details).

Both north and south of the road, the strata in this area generally dip at an angle of from 10° to 20° from the horizontal, descending towards the SSE; the Stockiemuir Sandstone Formation that is exposed beside and to the north of the road underlies the cornstone-containing Kinnesswood Formation to the south of the road.

The annotated satellite view also includes markers for various antiquities in the area:

● Ancient cairns: Link
● Circular enclosure: Link (originally reported as a hut circle)
● Carman (house): Link
● Carman (enclosure): Link
● Carman (field system): Link


Creative Commons Licence [Some Rights Reserved]   © Copyright Lairich Rig and licensed for reuse under this Creative Commons Licence.
Geographical Context: Quarrying, Mining Derelict, Disused Moorland Primary Subject: Pit
This photo is linked from: Automatic Clusters: · Line of Pits [23] Title Clusters: · Possible test pit [5] ·
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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Grid Square
NS3778, 210 images   (more nearby 🔍)
Photographer
Lairich Rig   (more nearby)
Date Taken
Friday, 27 February, 2015   (more nearby)
Submitted
Wednesday, 1 April, 2015
Subject Location
OSGB36: geotagged! NS 3743 7835 [10m precision]
WGS84: 55:58.2324N 4:36.3893W
Camera Location
OSGB36: geotagged! NS 3743 7835
View Direction
EAST (about 90 degrees)
Clickable map
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Image classification(about): Geograph
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