Ashford Black Marble is the name given to a dark limestone, quarried from mines near Ashford-in-the-Water, in Derbyshire, England. Once cut, turned and polished, its shiny black surface is highly decorative. Ashford Black Marble is a very fine-grained sedimentary rock, and is not a true marble in the geological sense. It can be cut and inlaid with other decorative stones and minerals, using a technique known as pietra dura.
The mineral has been used decoratively since prehistoric times; the first recorded customer was Bess of Hardwick in 1580. [1]
Henry Watson, the uncle of Derbyshire geologist White Watson, is regarded as one of the key figures in the development of the local industry of inlaying Ashford Black Marble in the 1750s. [2] He owned a water-powered mill at Ashford in the Water.
There was a thriving trade in the manufacture of urns, obelisks and other decorative items from Ashford Black Marble during the late 18th and early 19th century. John Mawe had a museum in Matlock Bath that dealt in black marble and Ann Rayner engraved pictures, next door at another museum, on black marble using a diamond. Many fine examples of engraved and inlaid black marble exist in local collections, including those of Derby Museum, Buxton Museum, [3] and Chatsworth House. In 2009 huge blocks of unworked Ashford Black Marble were unearthed during excavation work near to the Seven Stars public house in Derby. The plan was to auction them due to the rarity of unworked Ashford Black marble. It was speculated that the rocks had been abandoned when an Ashford Black Marble manufacturer moved in the 1880s. [4]
Although referred to as marble, the rock is of purely sedimentary origin. It is a dark, fine-grained, muddy Carboniferous limestone, rich in bitumen which gives it its dark grey colouration which turns a glossy black when polished and surface treated. The prime source of this rock was from Arrock Mine, and later in 1832 from nearby Rookery Plantation, [1] near Ashford-in-the-Water.
The limestone can be turned on a lathe to create urns, candlesticks and other similar objects, or sawn to produce smooth, flat items such as obelisks and paperweights. Derby Museum and Art Gallery holds collections of worked and part-worked items of Ashford Black Marble, acquired from an inlaying workshop owned by the Tomlinson family. This includes a range of pre-cut pieces ready for inlaying into the black marble background. Items such as forget-me-not and lily of the valley flowers would typically be represented. Coloured rocks to inlay into the black "marble" included grey, blue and purple minerals locally from Monyash, "rosewood" from Nettler Dale in Sheldon which consisted of red and white layers, barytes which created other variations, [1] the local Castleton Blue John which could create purple, and yellow fluorspar from Crich, [6] whilst "Birds-Eye" rock had a design made from the fossils that it contained. The rarest mineral was known as "Duke's Red" and this was so valuable that it was stored at Chatsworth House. [1] The tabletop design illustrated shows some of the combinations described here.
In the late 1780s Derbyshire geologist White Watson began to create explanatory geological tablets using Ashford Black Marble into which other local rocks were inlaid so as to represent the strata of the rocks in different parts of the county. [7] Derby Museum has a diagram of Ecton Hill (see picture) made from Ashford Black Marble and other minerals. [8]
William Martin, who at one time worked with Watson, wrote the first scientific study of fossils. His Petrifacta Derbiensia recounts that White Watson's uncle and workers at the Black Marble quarry called some of the fossils "crocodile tails" as they thought they were the remains of crocodiles. [5]
The craft of inlaying black marble was resumed in the 1990s by Don Edwards, who ran a rock and mineral dealership in the Derbyshire village of Tideswell. In 2006 it was announced that Buxton Museum had purchased the Black Marble collection that had been left by John Michael Tomlinson. He had spent over 50 years putting together the collection after finding that his ancestors had been involved in Ashford Black Marble manufacturing. [9] Derby Museum has a diagram of Ecton Hill made from Ashford Black Marble and other minerals. [8]
Limestone is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of CaCO3. Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life.
Marble is a metamorphic rock consisting of carbonate minerals (most commonly calcite (CaCO3) or dolomite (CaMg(CO3)2)) that have recrystallized under the influence of heat and pressure. It has a crystalline texture, and is typically not foliated (layered), although there are exceptions.
The Peak District is an upland area in central-northern England, at the southern end of the Pennines. Mostly in Derbyshire, it extends into Cheshire, Greater Manchester, Staffordshire, West Yorkshire and South Yorkshire. It is subdivided into the Dark Peak, moorland dominated by gritstone, and the White Peak, a limestone area with valleys and gorges. The Dark Peak forms an arc on the north, east and west of the district, and the White Peak covers central and southern areas. The highest point is Kinder Scout. Most of the area is within the Peak District National Park, a protected landscape designated in 1951.
Derbyshire is a ceremonial county in the East Midlands of England. It borders Greater Manchester, West Yorkshire, and South Yorkshire to the north, Nottinghamshire to the east, Leicestershire to the south-east, Staffordshire to the south and west, and Cheshire to the west. Derby is the largest settlement, and Matlock is the county town.
The River Manifold is a river in Staffordshire, England. It is a tributary of the River Dove.
The River Wye is a limestone river in the Peak District of Derbyshire, England. It is 22 miles long, and is one of the major tributaries of the River Derwent, which flows into the River Trent, and ultimately into the Humber and the North Sea.
Tideswell is a village, civil parish, and ward in the Peak District of Derbyshire, England. It lies 6 miles (9.7 km) east of Buxton on the B6049, in a wide valley on a limestone plateau, at an altitude of 1,000 feet (300 m) above sea level, and is within the District of Derbyshire Dales. The population was 1,820 in 2001, increasing slightly to 1,827 at the 2011 Census, making it the second-largest settlement within the National Park, after Bakewell. Tideswell Dale is a short limestone valley leading south from the village to the River Wye valley.
The history of Derbyshire can be traced back to human settlement since the last Ice Age, over 10,000 years ago. The county of Derbyshire in England dates back to the 11th century.
Pietra dura or pietre dure, called parchin kari or parchinkari in the Indian Subcontinent, is a term for the inlay technique of using cut and fitted, highly polished colored stones to create images. It is considered a decorative art. The stonework, after the work is assembled loosely, is glued stone-by-stone to a substrate after having previously been "sliced and cut in different shape sections, and then assembled together so precisely that the contact between each section was practically invisible". Stability was achieved by grooving the undersides of the stones so that they interlocked, rather like a jigsaw puzzle, with everything held tautly in place by an encircling 'frame'. Many different colored stones, particularly marbles, were used, along with semiprecious, and even precious stones. It first appeared in Rome in the 16th century, reaching its full maturity in Florence. Pietra dura items are generally crafted on green, white or black marble base stones. Typically, the resulting panel is completely flat, but some examples where the image is in low relief were made, taking the work more into the area of hardstone carving.
Ecton is a hamlet in the Staffordshire Peak District. It is on the Manifold Way, an 8-mile (13 km) walk and cycle path that follows the line of the former Leek and Manifold Valley Light Railway. Population details as at the 2011 census can be found under Ilam.
Trevor David Ford was an English geologist and author, best known for publishing the first report on the Precambrian fossil Charnia masoni in 1958. In addition to paleontology, his wide-ranging research encompassed geomorphology, speleology, studies of minerals and mineralisation, and mining history, and mainly focused on the Peak District. His academic career was at the Department of Geology of the University of Leicester, where he rose to be a senior lecturer (1980–87) and associate dean for combined studies in science. He was the founding editor of the journal now entitled Cave and Karst Science (1973–93), and published many books, both academic texts and books aimed at a broader audience, including cave guides, and guides to geology and minerals.
Buxton Museum and Art Gallery focuses its collection on history, geology and archaeology primarily from the Peak District and Derbyshire.
White Watson was an early English geologist, sculptor, stonemason and carver, marble-worker and mineral dealer. In common with many learned people of his time, he was skilled in a number of artistic and scientific areas, becoming a writer, poet, journalist, teacher, botanist and gardener as well as a geologist and mineralogist. He kept extensive diaries and sketchbooks of his observations on geology, fossils and minerals, flora and fauna, and published a small but significant and influential number of geological papers and catalogues. As an artist he was well known locally for his silhouettes, both on paper and as marble inlays.
Hardstone carving, in art history and archaeology, is the artistic carving of semi-precious stones, such as jade, rock crystal, agate, onyx, jasper, serpentinite, or carnelian, and for objects made in this way. Normally the objects are small, and the category overlaps with both jewellery and sculpture. Hardstone carving is sometimes referred to by the Italian term pietre dure; however, pietra dura is the common term used for stone inlay work, which causes some confusion.
William Martin was an English naturalist and palaeontologist who proposed that science should use fossils as evidence to support the study of natural history. Martin published the first colour pictures of fossils and the first scientific study of fossils in English.
Tideswell Dale is a short dry limestone valley near Tideswell village, Derbyshire, in the Peak District of England. There is a farmland plateau on either side. The foot of the valley leads into Miller's Dale on the River Wye, which the valley's Brook Head stream runs into.
The Derbyshire Dome is a geological formation across mid-Derbyshire in England.
The Wye Valley is the limestone valley of the River Wye in the White Peak of Derbyshire, England. The source of the River Wye is west of Buxton on Axe Edge Moor. One main channel runs underground through Poole's Cavern. The river flows though Buxton Pavilion Gardens and then along a culvert under the town centre. After leaving the flat area of central Buxton, the Wye Valley becomes distinct as a gorge running east for 10 miles (16 km) before the valley broadens at Ashford-in-the Water.
The geology of the Peak District National Park in England is dominated by a thick succession of faulted and folded sedimentary rocks of Carboniferous age. The Peak District is often divided into a southerly White Peak where Carboniferous Limestone outcrops and a northerly Dark Peak where the overlying succession of sandstones and mudstones dominate the landscape. The scarp and dip slope landscape which characterises the Dark Peak also extends along the eastern and western margins of the park. Although older rocks are present at depth, the oldest rocks which are to be found at the surface in the national park are dolomitic limestones of the Woo Dale Limestone Formation seen where Woo Dale enters Wye Dale east of Buxton.
p39 Fig 4....A fossil shell. The original a nautilus ....The crocodile said to be found in the limestone of Ashford, appears to be just a large specimen of this or some other Orthoceratite
