The Ancient Volcanoes of Great Britain, Volume 2 (of 2)

Section from the great Limestone escarpment on the west to the Millstone Grit hills east of Teesdale

Sections of the Carboniferous Limestone series of Northumberland showing the variations in the position of the Whin Sill. By Messrs. Topley and Lebour

View of two volcanic necks in the Carboniferous Limestone series, at Grange Mill, five miles west of Matlock Bath, from the north

Plan of necks and bedded tuff at Grange Mill, five miles west of Matlock Bath

Section across the smaller volcanic neck and the stratified tuff in Carboniferous Limestone, Grange Mill

Section of vesicular and amygdaloidal diabase resting on Carboniferous Limestone, Peak Forest Limeworks, Great Rocks Quarry

View of the superposition of Carboniferous Limestone upon toadstone, Raven's Tor, Millersdale (length about 100 feet)

Section at lime-kiln, south of Viaduct, Millersdale Station

Limestones passing under stratified tuffs, Poyll Vaaish, Isle of Man

Section of tuff, showing intercalations of black impure chert, west of Closenychollagh Point, near Castletown, Isle of Man

Section of intercalated dark limestone, shale and chert in the tuff south of Poyll Vaaish Bay, Isle of Man

Section of part of a volcanic neck on shore to the south-east of Poyll Vaaish Bay, Isle of Man

Section of successive discharges and disturbances within a volcanic vent. Scarlet Point, Isle of Man

Section of dyke and sill in the tuffs west of Scarlet Point, Isle of Man

Section on south side of vesicular sill west of Scarlet Point

Bands of vesicles in the same sill

Croghan Hill, King's County, from S.S.W.

Section in quarry on roadside east of Limerick, close to viaduct of the Limerick and Erris Railway

Section of the volcanic escarpment, east of Shehan's Cross-roads, south of Limerick

View of Derk Hill, a volcanic neck on the south side of the Limerick basin

Section across the Limerick volcanic basin

Section of a bed of volcanic breccia in the Carboniferous Slate; White Bull Head, County Cork

Volcanic breccia invading and enclosing Carboniferous slate, White Bull Head

General section across the Permian basin of Ayrshire

Section of lavas, east side of Mauchline Hill

Section of the top of the volcanic series near Eastside Cottage, Carron Water, Nithsdale

Section of two outliers of the Permian volcanic series at the foot of Windyhill Burn, Water of Ae, Dumfriesshire

The Green Hill, Waterside, Dalmellington, from the south; a tuff-neck of Permian age

Patna Hill from the Doon Bridge, Ayrshire; a tuff-neck of Permian age

Ground plans of Permian volcanic vents from the Ayrshire Coal-field. On the scale of six inches to a mile

Section of sills traversing the Permian volcanic series. River Ayr, Ballochmyle

Section showing the relations of the later rocks of Arthur Seat

Section in brooks between Bonny town and Baldastard, Largo

View of Largo Law from the east

View of small neck in Calciferous Sandstones, on the shore, three miles east from St. Andrews

Ground-plan of Permian volcanic vents

Small neck in Calciferous Sandstones a little east from the "Rock and Spindle," two and a half miles east from St. Andrews

Plan of volcanic necks at Kellie Law, East of Fife, on the scale of three inches to one mile

Plan of the craters in Volcanello, Lipari Islands

Section of the strata at the edge of the volcanic vent on the east side of Elie Harbour

Agglomerate of neck on shore at Ardross, two miles east from Elie

Ground-plan of volcanic neck, Elie Harbour, showing circular disposition of the stratification

Section across the great vent of Kincraig, Elie, on a true scale, vertical and horizontal, of six inches to a mile

Dyke in volcanic neck, on the beach, St. Monans

Section of part of crater rim, Island of Volcano

Dyke rising through the agglomerate of a volcanic vent; Kincraig, Elie

Radiating columnar dyke in the tuff of a volcanic vent. Rock and Spindle, two and a half miles east from St. Andrews

View of part of the shore front of the great vent at Kincraig, looking westward, with the columnar basalt in front

Plan of volcanic neck on beach near St. Monans

Columnar basalt in the neck of Kincraig, Elie, seen from the west

Section across Largo Law

Vein of "white-trap" cutting black carbonaceous shales, a little west from St. Monans Church

Section at Belvedere, S. W. of Exeter

Diagram to show the unconformability and overlap of the Permian rocks in the Crediton Valley

Section of the volcanic series at Kellerton, Devonshire

Section of agglomerate overlain with sandstone and andesite, Posbury, Crediton

Diagrammatic section across Titterstone Clee Hill

Dyke on the south-east coast of the Island of Mull

Fissure left by the weathering out of a dyke

Plan of basalt-veins with selvages of black basalt-glass, east side of Beinn Tighe, Isle of Eigg

Arrangement of lines of amygdales in a dyke, Strathmore, Skye

Systems of joints in the dykes

Section of cylindrical vein or dyke, cutting the bedded lavas, east side of Fuglö, Faroe Islands

Joint-structures in the central vitreous portion of the Eskdale Dyke (B. N. Peach)

Microscopic structure of the vitreous part of the Eskdale Dyke

Section along the line of the Cleveland Dyke at Cliff Ridge, Guisbrough (G. Barrow), scale, 12 inches to 1 mile

Section along the course of the Cleveland Dyke, at the head of Lonsdale, Yorkshire (G. Barrow, in the Memoirs of the Geol. Survey, Geology of Cleveland, p. 61)

Section across the extreme upper limit of Cleveland Dyke, on the scale of 20 feet to one inch (Mr. G. Barrow)

Upper limit of Cleveland Dyke in quarry near Cockfield (after Mr. Teall)

Section along the course of the Cleveland Dyke across the Cross Fell escarpment (scale of one inch to one mile)

Branching portion of the great dyke near Hawick (length about one mile)

Branching dyke at foot of Glen Artney (length about four miles)

Basic veins traversing Secondary limestone and sandstone on the coast cliffs, Aidnamurchan

Section showing the connection of a Dyke with an Intrusive Sheet, Point of Suisnish, Skye

Section to show the connection of a Dyke with an Intrusive Sheet, Stirlingshire Coal-field

Intersection of dykes in bedded basalt, Calliach Point, Mull

Basalt veins traversing bedded dolerites, Kildonan, Eigg

Ground-plan of intersecting dykes in Lias limestone, Shore, Harrabol, East of Broadford, Skye

Compound dyke, Market Stance, Broadford, Skye

Section of coal rendered columnar by intrusive basalt, shore, Saltcoats, Ayrshire

Dolerite dyke with marginal bands of "white trap," in black shale, Lower Lias, Pabba

Map of the chief dykes between Lochs Ridden and Striven (C. T. Clough, Geological Survey, Sheet 29)

Basalt-veins traversing granophyre, St. Kilda

Section of scoriaceous and prismatic basalt, Camas Tharbernish, north shore of Canna Island

Banded amygdaloidal basalt showing layers of elongated and steeply inclined vesicles, Macleod's Maidens, Skye

Termination of basalt-beds, Carsaig, Mull

Breccia and blocks of mica-schist, quartzite, etc., lying between bedded basalts, Isle of Mull

Section of Knocklayd, an outlier of the Antrim basalt-plateau lying on Chalk

Diagram-Section of the Antrim Plateau

View Of Basalt escarpment, Giant's Causeway, with the Amphitheatre and Chimneys. (From a photograph by Mr. R. Welch)

Basalt-capping on the top of Ben Iadain, Morven

View of the south side of Staffa, showing the bedded and columnar structure of the basalt

View of Rum from the harbour of Canna

Section of the cliffs below Compass Hill, Isle of Canna

Lava cutting out conglomerate and shale. Shore below Canna House

Section of shales and tuffs, with a coniferous stump lying between two basalt-sheets, Cùl nam Marbh, Canna

Dùn Mòr, Sanday. (From a photograph by Miss Thom)

View of the Dùn Beag, Sanday, seen from the south. (From a Photograph by Miss Thom)

View of Dùn Beag, Sanday, from the north. The island of Rum in the distance. (From a Photograph by Miss Thom)

Section of eastern front of Dùn Beag

Enlarged section on the western side of Dùn Beag

Geological map of the Island of Eigg

Section of the geological structure of the Island of Eigg

View of the Scuir of Eigg from the east

Natural section at the cliff of Bideann Boidheach, north-west end of the Scuir of Eigg

View of the Scuir of Eigg from the south

View of the Scuir of Eigg from the south-west of the Loch a Bhealaich, showing the bedded character of the mass

Section at the base of the Scuir of Eigg (east end)

Terraced hills of basalt plateau (Macleod's Tables), Skye

"Macleod's Maidens" and part of basalt cliffs of Skye

Intercalated group of strata between Basalts, An Ceannaich, western side of Skye

Escarpment of Plateau-basalts, Cliffs of Talisker, Skye

Section of the largest of Macleod's Maidens

Dying out of lava-beds, east side of Sandö, Faroe Isles

Lenticular lavas, western front of Hestö, Faroe Isles

Lenticular lavas, east side of Svinö, Faroe Isles

Section at Frodbonyp, Suderö, Faroe

Fissure (gjá) in a lava-field, Iceland. (From a photograph by Dr. Tempest Anderson)

Cones on the great Laki fissure, Iceland. (From a photograph by Dr. Tempest Anderson)

Plan of small craters along the line of great Laki fissure, Iceland. (After Mr. Helland, reduced)

Slemish, a volcanic neck or vent on the Antrim plateau, seen from the north

Section of volcanic vent at Carnmony Hill (E. Hull)

Section of the east side of Scawt Hill, near Glenarm

Section of Neck of basalt, Bendoo, Ballintoy

Volcanic Neck of dolerite near Cushendall

Section of Volcanic Neck at 'S Airde Beinne, near Tobermory, Mull

Interior of the Volcanic Neck of 'S Airde Beinne, near Tobermory, Mull

Diagram to show the probable relation of the Neck at Carrick-a-raide, Antrim, to an adjacent group of tuffs

Section of agglomerate Neck at Maclean's Nose, Ardnamurchan

Diagram to show the probable relations of the rocks on the southern flank of Beinn Dearg Bheag

Section of Volcanic Vent and connected lavas and tuffs, Scorr, Camas Garbh, Portree Bay, Skye

Section of the Volcanic Series at Ach na Hannait, south of Portree, Skye

View of part of a Volcanic Neck at the eastern end of the island of Canna. (From a photograph by Miss Thom)

Columnar Basalt invading agglomerate of Volcanic Vent, Coroghon Mòr, Isle of Canna. (Height above 20 feet)

Columnar Basalt invading Volcanic conglomerate, north side of Alman Islet, Canna

View of neck-like mass of breccia, Brochel, Raasay

View of Volcanic Neck piercing and overlain by the Plateau-Basalts, Stromö, entrance of Vaagöfjord, Faroe Islands. (From a photograph by Colonel Evans)

Section of the same Neck as that shown in Fig. 310

Volcanic Neck close to that shown in Figs. 310 and 311

Section of wall of another Neck of agglomerate in the same group with those represented in Figs. 310, 311, and 312

View of "Segregation-Veins" in a dolerite sill, Portrush, Antrim

View of Fair Head, from the east, showing the main upper sill and a thinner sheet cropping out along the talus slope

View of Fair Head from the shore. (From a photograph by Mr. R. Welch)

Section at Farragandoo cliff, west end of Fair Head, showing the rapid splitting up and dying out of an Intrusive Sheet

View of the Trotternish Coast, showing the position of the band of Sills

Columnar Sill intrusive in Jurassic Strata east of Kilmartin, Trotternish, Skye

View of the northern precipice (500 feet high) of the largest of the Shiant Isles. (From a photograph by Colonel Evans)

Section of thin Intrusive Sheets and Veins in carbonaceous shales lying among the Plateau-basalts, cliffs north of Ach na Hannait, between Portree Bay and Loch Sligachan

Upper part of Sill, Moonen Bay, Waternish, Skye, showing the divergence of veins

Section of the base of the Basalt-plateau with sill and dykes, Sound of Soa, Skye

Section of Dolerite Sill cut by another sill, both being traversed by dykes, Rudh' an Iasgaich, western side of Sleat, Skye

Section to show Bedded and Intrusive Sheets, Eigg

Ground plan of Sills at Ben Hiant, Ardnamurchan

Section of two Sills in schistose grits, west end of Beinn na h-Urchrach, Ardnamurchan

Sill traversing bedded Basalts, cliffs of Stromö, at entrance of Vaagöfjord

View of the same Sill seen from the channel opposite the island of Kolter

Granulitic and coarsely foliated Gabbro traversed by later veins of felspathic Gabbro, Druim an Eidhne, Cuillin Hills, Skye

Scuir na Gillean, Cuillin Hills, showing the characteristic craggy forms of the Gabbro. (From a photograph by Mr. Abraham, Keswick)

Section across Glen Brittle, to show the general relations of the Bedded Basalts and the Gabbros

View of the crest of the Cuillin Hills, showing the weathering of the Gabbro along its joints and of a compound basic dyke which rises through it. (From a photograph by Mr. Abraham, Keswick)

Section across the Coire Uaigneich, Skye

Banded and puckered gabbro, Druim an Eidhne, Glen Sligachan, Skye

Banded structure in the Gabbro, from the ridge of Druim an Eidhne, between Loch Coruisk and Glen Sligachan

Banded and doubly folded Gabbro, Druim an Eidhne, 10 feet broad

Sketch of banded structure in the Gabbros of the hills at the head of Loch Scavaig

Outline of the hills of the Island of Rum, sketched from near the Isle of Eigg

View of Allival, Rum, sketched from the base of the north-east side of the cone

Section of foliated Gabbros in the Tertiary volcanic series of Allival, Rum

Altered Plateau-Basalts invaded by Gabbro, and with a Dyke of prismatic Basalt cutting both rocks, north slope of Ben Buy, Mull

Theoretical representation of the structure of one of the Gabbro bosses of the Inner Hebrides

Section through the Puy de la Goutte and Puy de Chopine

View of the Huche Pointue and Huche Platte west of Le Pertuis

View of Glamich, 2537 feet, Glen Sligachan. (From a photograph by R. J. A. Berry, M.D., lent by the Scottish Mountaineering Club)

Section across the north slope of Beinn an Dubhaich, Skye

Section from Beinn Dearg to Beinn an Dubhaich, Skye

Section at north end of Beinn na Cro, Skye

Ground-plan of basic dyke in Cambrian limestones truncated by granophyre which encloses large blocks of the dyke, Torrin, Skye

Section on south side of Beinn an Dubhaich, Skye, showing the truncation of a basalt-dyke

View of the hills on the south side of the head of Loch na Keal, showing the junction of the Granophyre and the bedded basalts

Section on south side of Cruach Tòrr an Lochain, Mull

Section at head of Allt na Searmoin, Mull

Section on south side of Beinn Fhada, Mull

Section to south of Loch na Dàiridh, Mull

Section of junction of south side of Loch Ba' Granophyre boss, with the bedded basalts, Mull

Mass of dark gabbro about two feet in diameter traversed by pale veins of Granophyre, lying on north slope of Creag na h-Iolaire, Mull

Section at Creag na h-Iolaire, Glen More, Mull, showing basalts and gabbros resting on and pierced by Granophyre

Section on north side of Orval, Rum

Junction of Quartz-porphyry (Microgranite) and basic rocks, south-east side of Orval, Rum

Junction of Granophyre and gabbro, north side of St. Kilda

Veins of Granophyre traversing gabbro and splitting up into thin threads, north side of St. Kilda

Pale Granophyre injected into dark basalt, South Bay, St. Kilda

Veins of Granophyre traversing a fine-grained gabbro and scarcely entering a coarse-grained sheet, west side of Rueval, St. Kilda

View of sills and veins of pale Granophyre traversing sheets of gabbro, west side of St. Kilda. (From a photograph by Colonel Evans)

Section of the sea-cliff below Conacher, St. Kilda, showing basic dykes in Granophyre

Triple basic dyke, sea-cliff, east side of St. Kilda

Jointed structure of the Granite near the top of Goatfell, Arran. (From a photograph by Mr. W. Douglas, lent by the Scottish Mountaineering Club)

Intrusive Rhyolite in the lower basalt group of Antrim, Templepatrick

Section across the southern slope of Carnearny Hill, Antrim

Section across the Granophyre Sills at Loch a' Mhullaich, above Skulamus, Skye

Section to show the connection of a sill of Granophyre with its probable funnel of supply, Raasay

Granophyre sill resting on Lower Lias shales with a dyke of basalt passing laterally into a sill, Suisnish Point, Isle of Raasay

Weathered surface of spherulitic Granophyre from dyke in banded gabbros, Druim an Eidhne, Meall Dearg, Glen Sligachan, Skye. Natural size

Plan of portion of the ridge north of Druim an Eidhne, Glen Sligachan, Skye, showing three dykes issuing from a mass of Granophyre

Weathered surface of spherulitic Granophyre, from dyke in banded gabbros, Druim an Eidhne, Meall Dearg, Glen Sligachan, Skye. Natural size

Plan of pale Granophyric dyke, with spherulitic and flow-structure, cutting and enclosing dark gabbro, Druim an Eidhne

Dyke (six to ten feet broad) proceeding from a large body of Granophyre and traversing gabbro, from the same locality as Figs. 375 and 377

Section of intruded veins of various acid rocks above River Clachaig, Mull

Pitchstone vein traversing the bedded basalts, Rudh an Tangairt, Eigg

Reversed fault on the eastern side of Svinö, Faroe Isles

Reversed fault on the north-east headland of Sandö, Faroe Isle