Page:VCH Herefordshire 1.djvu/47

 GEOLOGY TABLE OF STRATA Pleistocene Series. Series Pliocene. . ) Miocene . . J Older Tertiary^ Cretaceous . >• Systems . Jurassic . . j J ^ Muschelkalk . . . ^ I Bunter B Eh CO O 3 ja o U' a> fl o a Tl <' a " J3 (U 2 •T3 o Haffield Conglo- merate /Upper . . . . Lower . Millstone Grit . Carboniferous Limestone Oh Cn /Brownstones . {Alluvial deposits, peat, &c. . River-gravels, cave and glacial deposits Absent from Herefordshire Red and variegated marls . . [•Absent from Herefordshire f Bromesberrow Beds. Soft, bright-red sandstones i Cornstones .3 { Temeside Upper Ludlow Conglomerates of a dark red co- lour, containing pebbles of Uriconian and Silurian rocks Absent from Herefordshire . (Shales with bands of ironstone ( nodules, and coal-seams Quartzose sandstones, coarse- grained in the upper portion, fine-grained in the lower {Massive limestones, frequently dolomitized, with shaly beds at various horizons /■Yellow, grey, and red sandstones, ■j with a few bands of red shale (,Quartz grits and conglomerates ^Brownstones. Red marls and ch ocolate-coloured sandstones, passing down into Upper Cornstones. Red grey sandstones, marls, cornstones iRowlstone Beds, sandstones Lower Cornstones .... Pteraspis Beds .... /Temeside Shales. Olive shales ■< and layers of grit, sometimes (, ossiferous /Downton Castle Sandstone. {a) Thinly bedded sandstones (J>) Massive bedded sandstones Downton Bone-Bed .... ^Sandy Shales 'Upper Whitecliffe, or Chonetes Flags Ludlow Bone-Bed .... Calcareous shales and flags . Lower Whitecliffe, or Rynchonella Flags Concretion-Band Calcareous blue flags Recent shells, plant-remains, &c ''Numerous mammalian remains have been obtained from the cave in the Great Doward, and a few from the gravels No fossils recorded No fossils recorded No fossils recorded and and Marls and !■ Plant-remains Plant-remains "I Lonsdaleia flor'iformis, Syringoiiyris >■ aff. /ammosa, Splrifer, Produc- ) tus, PhiUtpsta, Psammodus, &c. ■Holoptychius, Sauripterus, &c. No fossils have been obtained except fragments of Pteraspis and Cephalaspis from the Brownstones Styhnurus Symondsi, Praearcturus gigas, Scaphaspis, Zenaspis, Pteraspis, Eucephalaspis, &c. Approximate thickness in feet ■Lingula cornea and Eurypterus. Cyathaspis Banksi, Auchenaspis Egertoni, Cephalaspis Murchi- soni, Pterygotus Banksi, Eury- pterus pygmaeus, Beyrichia, &c. Chonetes striatella .Scaphaspis ludensis, ■Eurypterus, yRhynchonella nucu/aj ^ ' Up t0 200 1,900 470 'I 64s (less (■ in this J county ?) f 200 to I 500 no to 120 -30 to 50 150 to 160 I 10 to 120