T W Reader geological photographs, long excursions 1919 - index, GA 'Carreck Archive'

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T W Reader geological photographs, long excursions 1919 - index, GA 'Carreck Archive'[edit]

Llangollen Excursion, August, 1919[edit]

Link to full album

Page 5 P805604 Wenlock Limestone, Harley Hill. Llangollen Excursion, August 25th 1919.
Page 5 P805605 Wenlock Limestone, Harley Hill. Llangollen Excursion, August 25th 1919.
Page 5 P805606 Wenlock Limestone, Quarry on Harley Hill. Llangollen Excursion, August 25th 1919.
Page 5 P805607 Wenlock Limestone, Quarry on Harley Hill. Llangollen Excursion, August 25th 1919.
Page 7 P805608 Wenlock Limestone, Blakeway Hollow, Much Wenlock. Llangollen Excursion, August 25th 1919.
Page 7 P805609 Wenlock Limestone, Blakeway Hollow, Much Wenlock. Llangollen Excursion, August 25th 1919.
Page 7 P805610 Wenlock Limestone, Blakeway Hollow, Much Wenlock. Llangollen Excursion, August 25th 1919.
Page 7 P805611 Wenlock Limestone, Blakeway Hollow, Much Wenlock. Llangollen Excursion, August 25th 1919.
Page 9 P805612 Wenlock Limestone, Lillieshall Quarry. Llangollen Excursion, August 26th 1919.
Page 9 P805613 Wenlock Limestone, Lillieshall Quarry. Llangollen Excursion, August 26th 1919.
Page 9 P805614 Wenlock Limestone, Lillieshall Quarry. Llangollen Excursion, August 26th 1919.
Page 9 P805615 Wenlock Limestone, Lillieshall Quarry. Llangollen Excursion, August 26th 1919.
Page 11 P805616 Wenlock Limestone, Presthope Quarry. Llangollen Excursion, August 26th 1919.
Page 11 P805617 Wenlock Limestone, Presthope Quarry. Llangollen Excursion, August 26th 1919.
Page 11 P805618 Wenlock Limestone, Presthope Quarry. Llangollen Excursion, August 26th 1919.
Page 11 P805619 Wenlock Limestone, Presthope Quarry. Llangollen Excursion, August 26th 1919.
Page 13 P805620 Wenlock Limestone, Blakeway Hollow, Much Wenlock. Llangollen Excursion, August 25th 1919.
Page 13 P805621 Wenlock Limestone, Blakeway Hollow, Much Wenlock. Llangollen Excursion, August 25th 1919.
Page 13 P805622 Wenlock Limestone, Blakeway Hollow, Much Wenlock. Llangollen Excursion, August 25th 1919.
Page 13 P805623 Wenlock Limestone, Blakeway Hollow, Much Wenlock. Llangollen Excursion, August 25th 1919.
Page 17 P805624 View from Bridge Llangollen. The white house on the hill below the trees (Mount Pleasant Pen y Coed) being my quarters. Llangollen Excursion, August 17th 1919.
Page 17 P805625 View from Canal Llangollen. Llangollen Excursion, August 17th 1919.
Page 17 P805626 View of Llangollen from my window. Llangollen Excursion, August 17th 1919.
Page 17 P805627 Llangollen from Pen y Coed. Llangollen Excursion, August 17th 1919.
Page 19 P805628 Castell Dinas Bran from Pen y Coed. Llangollen Excursion, August 17th 1919.
Page 19 P805629 Castell Dinas Bran from Pen y Coed. Llangollen Excursion, August 17th 1919.
Page 19 P805630 Llangollen from Barbers Hill. Llangollen Excursion, August 17th 1919.
Page 19 P805631 Llangollen from Pen y Coed. Llangollen Excursion, August 17th 1919.
Page 21 P805632 Ludlow Beds on canal. Llangollen Excursion, August 18th 1919.
Page 21 P805633 Slates at Berwyn. Llangollen Excursion, August 18th 1919.
Page 21 P805634 Slate quarry, Berwyn. Llangollen Excursion, August 18th 1919.
Page 21 P805635 Slate quarry, Berwyn. Llangollen Excursion, August 18th 1919.
Page 23 P805636 Pentre Dwfr Slates, Oernant. Llangollen Excursion, August 18th 1919.
Page 23 P805637 Pentre Dwfr Slates, Oernant. Llangollen Excursion, August 18th 1919.
Page 23 P805638 Pentre Dwfr Slates, Oernant. Llangollen Excursion, August 18th 1919.
Page 23 P805639 Pentre Dwfr Slates, Oernant. Llangollen Excursion, August 18th 1919.
Page 25 P805640 The Horseshoe Pass. Llangollen Excursion, August 18th 1919.
Page 25 P805641 The Horseshoe Pass. Llangollen Excursion, August 18th 1919.
Page 25 P805642 The Horseshoe Pass. Llangollen Excursion, August 18th 1919.
Page 27 P805643 The Horseshoe Pass. Llangollen Excursion, August 18th 1919.
Page 27 P805644 The Horseshoe Pass. Llangollen Excursion, August 18th 1919.
Page 27 P805645 The Horseshoe Pass. Llangollen Excursion, August 18th 1919.
Page 29 P805646 Cloggau [Clogau] Slate Quarry. Llangollen Excursion, August 18th 1919.
Page 29 P805647 Cloggau [Clogau] Slate Quarry. Llangollen Excursion, August 18th 1919.
Page 29 P805648 Cloggau [Clogau] Slate Quarry. Llangollen Excursion, August 18th 1919.
Page 31 P805649 Valle Crucis Abbey. Llangollen Excursion, August 19th 1919.
Page 31 P805650 Valle Crucis Abbey. Llangollen Excursion, August 19th 1919.
Page 31 P805651 Valle Crucis Abbey. Llangollen Excursion, August 19th 1919.
Page 33 P805652 Valle Crucis Abbey. Llangollen Excursion, August 19th 1919.
Page 33 P805653 Valle Crucis Abbey. Llangollen Excursion, August 19th 1919.
Page 33 P805654 Valle Crucis Abbey. Llangollen Excursion, August 19th 1919.
Page 33 P805655 Valle Crucis Abbey. Llangollen Excursion, August 19th 1919.
Page 35 P805656 The Dee at Whitehurst. Looking East into the post-glacial gorge. Llangollen Excursion, August 20th 1919.
Page 35 P805657 The Terra cotta works in the Ruabon Marls, Upper Coal Measures, Pen-u-bont. Llangollen Excursion, August 20th 1919.
Page 35 P805658 These Ruabon Marls of the Upper Coal Measures are of the same horizon as the Etruria Marls of North Staffordshire and the Old Hill Marls of South Staffordshire. Llangollen Excursion, August 20th 1919.
Page 35 P805659 These Ruabon Marls of the Upper Coal Measures are of the same horizon as the Etruria Marls of North Staffordshire and the Old Hill Marls of South Staffordshire. Llangollen Excursion, August 20th 1919.
Page 37 P805660 River Dee near Chirk. Llangollen Excursion, August 20th 1919.
Page 39 P805661 Trevor Gannister Beds in the Lowest Coal Measures. Llangollen Excursion, August 21st 1919.
Page 39 P805662 Trevor Gannister Beds in the Lowest Coal Measures. Llangollen Excursion, August 21st 1919.
Page 39 P805663 Trevor Gannister Beds in the Lowest Coal Measures. Llangollen Excursion, August 21st 1919.
Page 41 P805664 Aqueduct Grit, top bed of the Millstone Grit, Trevor. Llangollen Excursion, August 21st 1919.
Page 41 P805665 Aqueduct Grit, top bed of the Millstone Grit, Trevor. Llangollen Excursion, August 21st 1919. Added note: Cherts.
Page 41 P805666 Aqueduct Grit, top bed of the Millstone Grit, Trevor. Llangollen Excursion, August 21st 1919.
Page 43 P805667 Garth. Llangollen Excursion, August 21st 1919. [Group photo].
Page 43 P805668 Garth. Grit near the topmost beds of the Millstone Grit. Llangollen Excursion, August 21st 1919.
Page 43 P805669 Millstone Grit, Garth. Llangollen Excursion, August 21st 1919.
Page 43 P805670 Castle Hill, Ludlow Series / Fault / Eglwyseg Rocks, Carboniferous Limestone. Llangollen Excursion, August 21st 1919.
Page 45 P805671 Llangollen Excursion, August 21st 1919.
Page 45 P805672 Llangollen Excursion, August 21st 1919.
Page 45 P805673 False bedding in Carboniferous Limestone. Trevor Rocks near Garth. Llangollen Excursion, August 21st 1919.
Page 45 P805674 Screes, Trevor Rocks. Llangollen Excursion, August 21st 1919.
Page 47 P805675 The Carboniferous escarpment of the Eglwyseg Rocks. Llangollen Excursion, August 21st 1919.
Page 47 P805676 The Carboniferous escarpment of the Eglwyseg Rocks. Llangollen Excursion, August 21st 1919.
Page 47 P805677 The Carboniferous escarpment of the Eglwyseg Rocks. Llangollen Excursion, August 21st 1919.
Page 47 P805678 The Carboniferous escarpment of the Eglwyseg Rocks. Llangollen Excursion, August 21st 1919.
Page 49 P805679 Our party on the face of the escarpment. Llangollen Excursion, August 21st 1919.
Page 49 P805680 Llangollen Excursion, August 21st 1919.
Page 49 P805681 Carboniferous Limestone of the Trevor Rocks near Garth. Llangollen Excursion, August 21st 1919.
Page 49 P805682 Carboniferous Limestone of the Trevor Rocks near Garth. Llangollen Excursion, August 21st 1919.
Page 51 P805683 The Vale of Llangollen from Dinas Bran. Looking West. Llangollen Excursion, August 21st 1919.
Page 51 P805684 The Dee valley from Castell Dinas Bran. Looking East. Llangollen Excursion, August 21st 1919.
Page 51 P805685 Castell Dinas Bran O.D. 1023. Llangollen Excursion, August 21st 1919.
Page 51 P805686 Castell Dinas Bran O.D. 1023. Llangollen Excursion, August 21st 1919.
Page 53 P805687 Cefn-uchaf. Llangollen Excursion, August 22nd 1919.
Page 53 P805688 Pen y Glog Slates. Llangollen Excursion, August 22nd 1919.
Page 53 P805689 Pen y Glog Slates. Llangollen Excursion, August 22nd 1919.
Page 53 P805690 Pen y Glog Slates. Llangollen Excursion, August 22nd 1919.
Page 55 P805691 Coed-y-Glyn. Bryn Beds, Caradocian. With intrusion of keratophyre. Llangollen Excursion, August 22nd 1919.
Page 55 P805692 Coed-y-Glyn. Bryn Beds, Caradocian. With intrusion of keratophyre. Llangollen Excursion, August 22nd 1919.
Page 57 P805693 Pandy Ash. Llangollen Excursion, August 22nd 1919.
Page 57 P805694 China stone quarry, Pandy. Llangollen Excursion, August 22nd 1919.
Page 57 P805695 China stone quarry, Pandy. Llangollen Excursion, August 22nd 1919.
Page 59 P805696 Bala Lake. Llangollen Excursion, August 23rd 1919.
Page 59 P805697 Bala Lake. Llangollen Excursion, August 23rd 1919.
Page 59 P805698 Flaggy horizon of Lower Ludlow. Zone of Monographia leintwardinensis. Llangollen Excursion, August 23rd 1919.

Bristol Excursion, April, 1919[edit]

Page 63 P805699 Tortworth inlier. Bristol Excursion, April 17th 1919. Damery Quarry. This is a compact andesitic trap but containing a very small quantity of ferromagnesian minerals. In places it is of a well marked amygdaloidal character the cavities being filled with calcite and chlorite.
Page 63 P805700 Tortworth inlier. Bristol Excursion, April 17th 1919. Damery Quarry. This is a compact andesitic trap but containing a very small quantity of ferromagnesian minerals. In places it is of a well marked amygdaloidal character the cavities being filled with calcite and chlorite.
Page 63 P805701 Burrington Combe. Bristol Excursion, April 17th 1919. A stream descending a swallow hole. This stream rises on Blackdown on the Old Red Sandstone and flows down in a northerly direction over the Carboniferous K beds which being of an argillaceous character are impervious but directly they reach the Z beds which consist of massive limestone with many joints the water immediately sinks in and finds an undergound channel.
Page 63 P805702 Burrington Combe. Bristol Excursion, April 17th 1919. A stream descending a swallow hole. This stream rises on Blackdown on the Old Red Sandstone and flows down in a northerly direction over the Carboniferous K beds which being of an argillaceous character are impervious but directly they reach the Z beds which consist of massive limestone with many joints the water immediately sinks in and finds an undergound channel.
Page 65 P805703 Burrington Combe. Bristol Excursion, April 19th 1919. The Rock of Ages. It was whilst taking shelter from a thunder storm in the 'cleft' of this rock that the Rev. Augustus M. Toplady of Blagdon composed the well known hymn 'Rock of Ages cleft for me'. He died in 1770 aged 38.
Page 65 P805704 Burrington Combe. Bristol Excursion, April 19th 1919. Quarry in Carboniferous limestone. This consists of the massive oolitic and foraminiferal limestone of the Upper Syringothyris zone styled (C2). Added note: North, South.
Page 65 P805705 Burrington Combe looking North. Bristol Excursion, April 19th 1919. This picturesque combe is a deep ravine cut into the northern side of the Blackdown plateau and shows a fine section of the Lower Carboniferous Limestone in the quarries on the left hand side of the road from Burrington. Owing to the high dip which averages 60 degrees, the whole of the beds from D1 to the Old Red Sandstone with a thickness of 2600 feet can be studied within two thirds of a mile. These are correlated to the Gully Oolite of the Avon section.
Page 65 P805706 Burrington Combe looking North. Bristol Excursion, April 19th 1919. This picturesque combe is a deep ravine cut into the northern side of the Blackdown plateau and shows a fine section of the Lower Carboniferous Limestone in the quarries on the left hand side of the road from Burrington. Owing to the high dip which averages 60 degrees, the whole of the beds from D1 to the Old Red Sandstone with a thickness of 2600 feet can be studied within two thirds of a mile. These are correlated to the Gully Oolite of the Avon section.
Page 67 P805707 Cheddar. Bristol Excursion, April 19th 1919. As the Cheddar gorge mainly follows the strike we find that the greater part of the strata seen consists of the Seminula beds but the various horizons from C2 to D1 are represented.
Page 67 P805708 Cheddar. Bristol Excursion, April 19th 1919. As the gorge runs south-westwards across the strata which are dipping due south we find on the right hand side a series of step like dip slopes and on the left mural faces and jointed bastions progressively increasing in grandeur as the valley deepens toward its outlet on the plain.
Page 67 P805709 Cheddar. Bristol Excursion, April 19th 1919. As the gorge runs south-westwards across the strata which are dipping due south we find on the right hand side a series of step like dip slopes and on the left mural faces and jointed bastions progressively increasing in grandeur as the valley deepens toward its outlet on the plain.
Page 69 P805710 Cheddar. Bristol Excursion, April 19th 1919. The valley bottom is dry and without any stream but as we approach the village of Cheddar a stream is seen to issue from an arch in the limestone. Its course underground has not been followed but is probably fed some several swallow holes in the Mendip hills.
Page 69 P805711 Cheddar. Bristol Excursion, April 19th 1919. The valley bottom is dry and without any stream but as we approach the village of Cheddar a stream is seen to issue from an arch in the limestone. Its course underground has not been followed but is probably fed some several swallow holes in the Mendip hills.
Page 69 P805712 Cheddar. Bristol Excursion, April 19th 1919. Quarry in the Cheddar Gorge where the Great Rock fall of Feb. 6 1906 took place. This is in the upper part of S.1. Many fine specimens of the coral Lithostrotion martini are found here.
Page 69 P805713 Cheddar. Bristol Excursion, April 19th 1919. From below these bastions assume the appearance of isolates pinnacles but they are for the most part spurs from the denuded arch of the hills.
Page 71 P805714 Radstock District. Bowldish Quarry. 3/4 of a mile north of Midsomer Norton. Bristol Excursion, April 21st 1919. Sections in Lower Lias in the Sauzeanum zone. These beds are very fossiliferous and from this quarry the finest specimens of Spiriferina Walcotti have been obtained.
Page 71 P805715 Radstock District. Bowldish Quarry. 3/4 of a mile north of Midsomer Norton. Bristol Excursion, April 21st 1919. Sections in Lower Lias in the Sauzeanum zone. These beds are very fossiliferous and from this quarry the finest specimens of Spiriferina Walcotti have been obtained.
Page 71 P805716 Radstock District. Clandown Quarry. Bristol Excursion, April 21st 1919. This quarry is in the Armatus and Jamesoni zones and consists of White Lias limestones overlaid by planorbis beds. The Spirifer bank and the conglomeratic and phosphatic band at the armatus raricostatus level are well marked and contain crinoidal remains and various marine fossils. The upper beds are on the Jamesoni horizon.
Page 71 P805717 Radstock District. Clandown Quarry. Bristol Excursion, April 21st 1919. This quarry is in the Armatus and Jamesoni zones and consists of White Lias limestones overlaid by planorbis beds. The Spirifer bank and the conglomeratic and phosphatic band at the armatus raricostatus level are well marked and contain crinoidal remains and various marine fossils. The upper beds are on the Jamesoni horizon.
Page 73 P805718 Grove Quarry, Radstock. 3/4 of a mile south of the town. Bristol Excursion, April 21st 1919. These quarries show very well the typical limestone nature of the Lower Lias of the Sinemurian and Hettangian divisions.
Page 73 P805719 Grove Quarry, Radstock. 3/4 of a mile south of the town. Bristol Excursion, April 21st 1919. These quarries show very well the typical limestone nature of the Lower Lias of the Sinemurian and Hettangian divisions.
Page 73 P805720 Bristol Excursion, April 21st 1919. Added note: White Lias.
Page 73 P805721 Bristol Excursion, April 21st 1919. Added note: White Lias.
Page 75 P805722 Portishead. Battery Point. Bristol Excursion, April 22nd 1919. Anticlines in the upper Cleistopora Beds of the Carboniferous Limestone.
Page 75 P805723 Portishead. Battery Point. Bristol Excursion, April 22nd 1919. Anticlines in the upper Cleistopora beds of the Carboniferous Limestone.
Page 75 P805724 Portishead. Bristol Excursion, April 22nd 1919. Syncline and broken anticline in the upper Cleistopora beds of the Carb [Carboniferous] Limestone, Battery Point.
Page 75 P805725 Portishead. Bristol Excursion, April 22nd 1919. The Dolomitic Conglomerate of the base of the Trias resting unconformably on the Old Red Sandstone.
Page 77 P805726 Portishead. Bristol Excursion, April 22nd 1919. Calcareous development in Old Red Sandstone.
Page 77 P805727 Portishead. Bristol Excursion, April 22nd 1919. Old Red Sandstone and shale.
Page 77 P805728 Portishead. Bristol Excursion, April 22nd 1919. Crushed Carboniferous Limestone on line of fault below Battery Point.
Page 77 P805729 Portishead. Bristol Excursion, April 22nd 1919. Conglomerate and calcareous development in Old Red Sandstone.
Page 79 P805730 Portishead. Bristol Excursion, April 22nd 1919. Current or false bedding in Old Red Sandstone.
Page 79 P805731 Portishead. Bristol Excursion, April 22nd 1919. Current or false bedding in Old Red Sandstone. Added note: Also calcareous development.
Page 81 P805732 Aust Cliff. Bristol Excursion, April 22nd 1919. This cliff section exposed on the bank of the Severn at Aust shows in every detail the gradual passage from beds of Triassic age to those of the Jurassic system. The colour of these marls is due to the particular oxide of iron they contain. The Red marl having ferric oxide Fe2O3 while the green and blue have ferrous oxide FeO.
Page 81 P805733 Aust Cliff. Bristol Excursion, April 22nd 1919. This cliff section exposed on the bank of the Severn at Aust shows in every detail the gradual passage from beds of Triassic age to those of the Jurassic system. The colour of these marls is due to the particular oxide of iron they contain. The Red marl having ferric oxide Fe2O3 while the green and blue have ferrous oxide FeO. Added note:Tea Green Marls, Red marls.
Page 81 P805734 Aust Cliff. Bristol Excursion, April 22nd 1919. The gypsum of the Red Keuper Marls occurs chiefly in the form of discontinuous vertical deposits like veins with which are connected smaller veins or strings ramifying through the surrounding rock. This mineral evidently fills up former cracks in the rock.
Page 81 P805735 Aust Cliff. Bristol Excursion, April 22nd 1919. The gypsum of the Red Keuper Marls occurs chiefly in the form of discontinuous vertical deposits like veins with which are connected smaller veins or strings ramifying through the surrounding rock. This mineral evidently fills up former cracks in the rock.
Page 83 P805736 Aust Cliff. Bristol Excursion, April 22nd 1919. Step fault - formed by two juxtaposed faults 'throwing' in the same direction.
Page 83 P805737 Aust Cliff. Bristol Excursion, April 22nd 1919. The gypsum which does not occur in regular beds is found in lumps, strings and veins through being deposited in cracks by percolating water.
Page 83 P805738 Aust Cliff. Bristol Excursion, April 22nd 1919. Above the Tea Green Marls occurs the well known Bone bed at the base of the Rhaetic or Penarth beds. At the south end of the section it consists of a dark hard compact limestone while in the centre it is a thin layer of siliceous grit loaded with fish teeth, scales, bones and dorsal spines together with vertebrae and coprolites of saurians. Above the bone bed are the black shales about a foot thick with Avicula contorta, Cardium rhaeticum and Pecten valoniensis. Added note: Tea Green Marls, Keuper Red Marls, Band with gypsum, Red sandstone resting unconformably on Carb. [Carboniferous] limestone.
Page 85 P805739 Aust Cliff. Bristol Excursion, April 22nd 1919. The continuity of these beds are [is] broken by five faults in which the downthrow side is to the south. Down the lines of faulting are thin veins of gypsum and celestine associated with calcite, this together with the hardening due to the pressure of faulting causes a little promontory or buttress which projects for several feet from the cliff face.
Page 85 P805740 Aust Cliff. Bristol Excursion, April 22nd 1919. The continuity of these beds are [is] broken by five faults in which the downthrow side is to the south. Down the lines of faulting are thin veins of gypsum and celestine associated with calcite, this together with the hardening due to the pressure of faulting causes a little promontory or buttress which projects for several feet from the cliff face.
Page 85 P805741 Aust Cliff. Bristol Excursion, April 22nd 1919. Immediately above the Avicula contorta zone is a thin argillaceous limestone known as the Insect bed. This forms the base of the White Lias beds while the top of the cliff is formed by the Lima Series of the Lower Lias. Added note: White Lias, Insect Bed, Planorbis Bed, Avicula contorta zone, Bone Bed,Tea Green Marls, Keuper Red Marls.
Page 85 P805742 Aust Cliff. Bristol Excursion, April 22nd 1919. At each fault a small stream of water trickles over the face of the cliff. This is caused by the water percolating through the porous White Lias being dammed back against the marly clay below.
Page 87 P805743 Spring Cove - Weston. Bristol Excursion, [no date, April 1919]. Remains of raised beach resting on Carboniferous Limestone (25 ft above high water). Added note: Talus, Raised beach, Carb. [Carboniferous] Limestone.
Page 87 P805744 Spring Cove - Weston. Bristol Excursion, [no date, April 1919]. The raised beach consists of fragments of limestone with shells now living in the sea below and hardened by a calcareous cement. Added note: Talus, Raised beach, Carb. [Carboniferous] Limestone.
Page 87 P805745 Spring Cove - Weston. Bristol Excursion, [no date, April 1919]. Bed of basaltic lava interbedded in the syringothyris beds (top of C1) of the Carboniferous Limestone. Added note: Basaltic lava, Laminosa Dolomite (C1), Calc Tuff.
Page 87 P805746 Spring Cove - Weston. Bristol Excursion, [no date, April 1919]. Section in he Laminosa Dolomite (C1) of the Carboniferous Limestone. In the foreground is a block of the raised beach fallen from 25 ft above. Added note: Laminosa Dolomite (C1), Block of raised beach, Calc [Calcareous] Tuff.
Page 89 P805747 Woodspring. Bristol Excursion, [no date, April 1919]. 2nd exposure of igneous series. Added note: Calcareous tuff, Laminosa Dolomite C1.
Page 89 P805748 Woodspring. Bristol Excursion, [no date, April 1919]. Junction of interbedded basaltic lava and Carboniferous Limestone - Spring Cove. Added note: Basaltic lava, Carb. [Carboniferous] Limestone.
Page 89 P805749 Woodspring. Bristol Excursion, [no date, April 1919]. Highly inclined calcareous tuff. Woodspring, 2nd exposure.
Page 89 P805750 Woodspring. Bristol Excursion, [no date, April 1919]. Hollow denuded by the action of the sea at the junction of the calcareous tuff and the Carboniferous Limestone. Added note: Carboniferous Limestone, Calc [Calcareous] tuff.
Page 91 P805751 Woodspring. Bristol Excursion, [no date, April 1919]. Jointing in Laminosa Dolomite (C1). This also [shows] the undercutting caused by the waves dashing the stones against the rock.
Page 91 P805752 Woodspring. Bristol Excursion, [no date, April 1919]. The Western exposure showing junction of the calcareous tuff and the Laminosa Dolomite (C1). Added note: Laminosa Dolomite (C1), Calcareous Tuff.
Page 91 P805753 Woodspring. Bristol Excursion, [no date, April 1919]. Calcareous tuff veined by calcite, Western exposure.
Page 93 P805754 Woodspring. Bristol Excursion, [no date, April 1919]. Outcrop of igneous rocks at the Western exposure - showing the way they form weak points which cause rapid coast erosion. Added note: Calcareous tuff, Pillowy basaltic lava.
Page 93 P805755 Woodspring. Bristol Excursion, [no date, April 1919]. The 'Monkey face' Rock, a mass of pillowy basaltic lava.
Page 93 P805756 Woodspring. Bristol Excursion, [no date, April 1919]. North shore of Woodspring Promontory showing Carb. Lstn. [Carboniferous Limestone] Z2 dipping S.
Page 93 P805757 Woodspring. Bristol Excursion, [no date, April 1919]. North shore of Woodspring Promontory showing Carb. Lstn. [Carboniferous Limestone] Z2 dipping S.
Page 95] P805758 Quarry No. 3 (Rock Leigh) showing the dip slope with Caninia Oolite. Bristol Excursion, [no date, April 1919].
Page 95 P805759 Quarry No. 2 (Z2 Beds). Bristol Excursion, [no date, April 1919]. [Group photo].
Page 95 P805760 The Avon Gorge looking N towards the sea. Bristol Excursion, [no date, April 1919].
Page 95 P805761 The Avon Gorge looking S towards Bristol. Bristol Excursion, [no date, April 1919].
Page 97 P805762 Avon section, left bank. Bristol Excursion, [no date, April 1919].
Page 97 P805763 Avon section, left bank. Bristol Excursion, [no date, April 1919]. Caninia Dolomite on Gully Oolite (Carb [Carboniferous] Limestone. Quarry No. 3. Added note: Caninia Dolomite C2, Gully or Caninia Oolite C1.
Page 97 P805764 Avon section, left bank. Bristol Excursion, [no date, April 1919]. No. 2 Quarry. Z2 beds.
Page 97 P805765 Avon section, left bank. Bristol Excursion, [no date, April 1919]. Quarry No. 2 (Z2 beds).
Page 99 P805766 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Northern end of the section. In the centre are seen the Modiola shales (Km) capped by the Bryozoa bed. Added note: Old Red Sandstone, Bryozoa bed.
Page 99 P805767 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Black Rock Quarry. Added note: K2 beds, Z1, Z2 beds. Subzone of Zaphrentis konincki, Z2, Z1 Subzone of Sprifer clathratus.
Page 99 P805768 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Black Rock Quarry showing the north slope and part of the Gully. Added notes: Z1 Subzone of Spirifer clathratus, Z2 Subzone of Zaphrentis konincki, Fish Beds, Horizon Y., C1, the Gully, C1 Laminosa Dolomites.
Page 101 P805769 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Oolite Quarry. Added note: Caninia Dolomite C2, Gully or Caninia Oolite C1, Laminosa Dolomite C1.
Page 101 P805770 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Gully to Great Quarry. Added note: C1, Caninia dolomite C2, S.1.
Page 101 P805771 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Great Quarry. Added note: Subzone of Caninia bristolensis S.1., S.2. (Subzone of Productus cora), D1 Subzone of Dibunophyllum ?.
Page 103 P805772 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The lower railway cutting. Modiola shales (Km) with Bryozoa Beds above (K.1.). Added note: Bryozoa bed K1.
Page 103 P805773 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Caninia Dolomite (C2) subzone of Cyathophyllum ? resting conformably on the Caninia Oolite C1 Carboniferous limestone. Gully N. of Great Quarry.
Page 103 P805774 Avon section, right bank. Bristol Excursion, [no date, April 1919]. Railway cutting North of Cooks Folly. Modiola Shales overlaid by the Bryozoa Bed.
Page 105 P805775 Avon section, right bank. Bristol Excursion, [no date, April 1919]. S2 beds at South end of quarry. Added note: Seminula Oolite, Smooth joint face.
Page 105 P805776 Avon section, right bank. Bristol Excursion, [no date, April 1919]. Smooth joint face in S2 beds. South end of Rifle range quarry.
Page 105 P805777 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Great Quarry or Rifle-Range Quarry. North end S.1. beds. Added note: Line of small thrust.
Page 105 P805778 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Great Quarry or Rifle-Range Quarry. S.1. beds at North end of quarry. The bare face in the foreground is a shale band covered with a Terebratuliform brachiopod named Seminula ficoides.
Page 107 P805779 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Great Fault. The vertical displacement is about 1100. The massive limestone on the right belongs to the Upper Seminula zone. The crumpled beds are the Red Grits and shales of the top of D2.
Page 109 P805780 Avon section, right bank. Bristol Excursion, [no date, April 1919]. Southern end of Rifle Range Quarry. Added note: S.2., D1.
Page 109 P805781 Avon section, right bank. Bristol Excursion, [no date, April 1919]. D1 beds near Point Villa. Added note: Dolomitic conglomerate of Bridge Valley Road.
Page 109 P805782 Avon section, right bank. Bristol Excursion, [no date, April 1919]. The Great Fault. Added note: Contorted highest Dibunophyllum beds, Upper Seminula beds.
Page 109 P805783 Avon section, right bank. Bristol Excursion, [no date, April 1919]. Upper Seminula beds S2.
Page 111 P805784 Avon section, right bank. Bristol Excursion, [no date, April 1919]. S.1. beds. N. end of Rifle range quarry.
Page 111 P805785 Avon section, right bank. Bristol Excursion, [no date, April 1919]. Z1 beds. N. end of Black Rock Quarry.
Page 111 P805786 Avon section, right bank. Bristol Excursion, [no date, April 1919]. Upper Carboniferous Limestone beds. Added note: C1, C2, S, D.
Page 111 P805787 Avon section, right bank. Bristol Excursion, [no date, April 1919]. Black Rock Quarry showing the very level surface of Durdham Downs at Sea Walls. Added note: Sea Walls, Gully.

Excursion to Plumstead, March 22nd 1919[edit]

Page 115 P805788 Messrs Tuff and Hoare's Pit. Excursion to Plumstead, March 22nd 1919.
Page 115 P805789 Messrs Tuff and Hoare's Pit. Excursion to Plumstead, March 22nd 1919. Added note: Woolwich and Reading, Thanet Sands, Bull head Bed, Chalk. [Missing] photo].
Page 115 P805790 Messrs Tuff and Hoare's Pit. Excursion to Plumstead, March 22nd 1919. Added note: Thanet Sands, Bull head Bed, Chalk.

Excursion to Beddington, April 12th 1919[edit]

Page 117 P805791 Section in Wandle Gravel (100 feet O.D.) near the Cement Works, Beddington. Excursion to Beddington, April 12th 1919.
Page 117 P805792 Section in Wandle Gravel (100 feet O.D.) near the Cement Works, Beddington. Excursion to Beddington, April 12th 1919.
Page 117 P805793 Messrs Clack and Sons Thanet Sand Pit, Beddington. Excursion to Beddington, April 12th 1919.
Page 117 P805794 Messrs Clack and Sons Thanet Sand Pit, Beddington. Excursion to Beddington, April 12th 1919.
Page 119 P805795 Sections in London Clay at the Portland Cement works, Beddington. Excursion to Beddington, April 12th 1919.
Page 119 P805796 Sections in London Clay at the Portland Cement Works, Beddington. Excursion to Beddington, April 12th 1919.
Page 119 P805797 Sections in London Clay at the Portland Cement Works, Beddington. Excursion to Beddington, April 12th 1919.
Page 119 P805798 Sections in London Clay at the Portland Cement works, Beddington. Excursion to Beddington, April 12th 1919.

Excursion to Berkhamsted (Little Heath), April 26th 1919[edit]

Page 121 P805799 Sections in high level sands and gravels 550 feet O.D. resting on chalk and capped by highly disturbed glacial beds. Excursion to Berkhamsted (Little Heath), April 26th 1919.
Page 121 P805800 Sections in high level sands and gravels 550 feet O.D. resting on chalk and capped by highly disturbed glacial beds. Excursion to Berkhamsted (Little Heath), April 26th 1919.
Page 121 P805801 Glacial gravel with large flints many of which are vertical. Excursion to Berkhamsted (Little Heath), April 26th 1919.
Page 121 P805802 These loamy sands contain frequent examples of suncracks and ripplemarks and are capped by gracial gravels. Excursion to Berkhamsted (Little Heath), April 26th 1919.

Excursion to Woking, May 3rd 1919[edit]

Page 123 P805803 Sections in Barton Pebble Beds at Stanners Hill. Excursion to Woking, May 3rd 1919.
Page 123 P805804 Sections in Barton Pebble Beds at Stanners Hill. Excursion to Woking, May 3rd 1919.
Page 123 P805805 Sections in Barton Pebble Beds at Stanners Hill. Excursion to Woking, May 3rd 1919.
Page 123 P805806 Sections in Barton Pebble Beds at Stanners Hill. Excursion to Woking, May 3rd 1919.
Page 125 P805807 Sections in Barton Pebble Beds at Stanners Hill. Excursion to Woking, May 3rd 1919.
Page 125 P805808 Sections in Barton Pebble Beds at Stanners Hill. Excursion to Woking, May 3rd 1919.
Page 125 P805809 Sections in Bagshot Sands at Horsell Common. Excursion to Woking, May 3rd 1919.
Page 125 P805810 Sections in Bagshot Sands at Horsell Common. Excursion to Woking, May 3rd 1919.

Excursion to Codicote, May 10th 1919[edit]

Page 127 P805811 Upper spit. Excursion to Codicote, May 10th 1919.
Page 127 P805812 Coarse gravel with large angular flints. Excursion to Codicote, May 10th 1919. Added note: Upper spit.
Page 127 P805813 Upper spit. Excursion to Codicote, May 10th 1919.
Page 127 P805814 Fine sand and gravel with lenticular and current bedding. Excursion to Codicote, May 10th 1919. Added note: Lower spit.
Page 129 P805815 Pipes in Chalk filled with Pliocene ? [sic] gravels. A band of tabular flint runs completely round the quarry. Excursion to Codicote, May 10th 1919.
Page 129 P805816 Pipes in Chalk filled with Pliocene ? [sic] gravels. A band of tabular flint runs completely round the quarry. Excursion to Codicote, May 10th 1919.

Excursion to Epsom, May 24th 1919[edit]

Page 131 P805817 The pit of the Epsom Lime Works near the Royal Benevolent Medical College. Excursion to Epsom, May 24th 1919. The pit of the Epsom Lime Works near the Royal Benevolent Medical College. Hard white chalk with many flints. Zone of Micraster cor anguinum. The upper part is softer with fewer flints and belongs to the Marsupites zone.
Page 131 P805818 The pit of the Epsom Lime Works near the Royal Benevolent Medical College. Excursion to Epsom, May 24th 1919. The pit of the Epsom Lime Works near the Royal Benevolent Medical College. Hard white chalk with many flints. Zone of Micraster cor anguinum. The upper part is softer with fewer flints and belongs to the Marsupites zone.
Page 131 P805819 Sections showing the lenticular of false bedded structure in the Chalk. Excursion to Epsom, May 24th 1919.
Page 131 P805820 Sections showing the lenticular of false bedded structure in the Chalk. Excursion to Epsom, May 24th 1919.

Excursion to Walter's Ash [Walters Ash], July 26th 1919[edit]

Page 133 P805821 The sarsen workings at Walters Ash. Excursion to Walter's Ash [Walters Ash], July 26th 1919.
Page 133 P805822 Blocks of sarsens for the repair of Windsor Castle. Excursion to Walter's Ash [Walters Ash], July 26th 1919.
Page 133 P805823 View of pit sunk for extracting the blocks of sarsens seen in situ. Excursion to Walter's Ash [Walters Ash], July 26th 1919.
Page 133 P805824 View of pit sunk for extracting the blocks of sarsens seen in situ. Excursion to Walter's Ash [Walters Ash], July 26th 1919.

Excursion to Greenhithe and Stone, August 30th 1919[edit]

Page 135 P805825 The Howe Hill Pit consisting of clean sharp sand and gravel, current-bedded. The highest part trenched by superficial loam filled channels. Excursion to Greenhithe and Stone, August 30th 1919.
Page 135 P805826 The Howe Hill Pit consisting of clean sharp sand and gravel, current-bedded. The highest part trenched by superficial loam filled channels. Excursion to Greenhithe and Stone, August 30th 1919.
Page 135 P805827 Section through drift filled channel, Stone Court Chalk Pits. Excursion to Greenhithe and Stone, August 30th 1919.