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metres Ashgill Pen -y- garnedd Fm cl x x x x x x Y x Dolerite Site of phosphate working 5’ Cwm Rhiwarth Siltstone Fm - - - - <strong>Geological</strong> boundary 10 000 lzl “O”,* Swch Gorge Tuff Fm Pen - plaenau Siltstone Fm Stratigraphic boundaries from Brenchley ( 1978) -e- Fault Sample site x Water sample site only . Zns720 FePlO-7% C&128 “, Road Stream Fig. 24: Anomalous results in drainage samples from Cwm Rhiwarth. 20 Anomalous result in ppm s =sediment p = panned concentrate w =water
7 / I 03 0 Reconnaissance sample site I @ Additional sample site , .< ..; Ba, 1280 Anomalous result in ppm ‘-. *.’ : ; (. , .:‘. : . ..? ,,‘. >. ,\’ ; . . ‘: Moel . I ‘. 2 , , , m mc _’ ,‘,’ : i : : I .\,. tlwylra ~ ‘.. z , . . ._:,: , :, , ,. c ,a ,-. “,‘f.. ),, : ,A: ,~ ,. > : “‘:;. . . _> * 2.2 : ‘i , *‘. 1 \ \ \ / / ‘< 1 h6 8= sediment D= oanned concentrate w= water I ..,,.:‘,, :A,’ .’ ; , . . _.’ . ..‘.‘,.‘.. I’ Blaen - y- cwm Shale Fm. -(Baa 440) Swch Gorge Tuff Fm. Pen -plaenau Siltstone Fm Pen -y-game&I Fm. -- Fault (from Brenchley 1978) Cwm Rhiwarth Siltstone Fm. Geologlcai Boundary (from Brenchiey 1978) metres Fig. 25: Anomalous results in drainage samples from around Pennant Melangell. 21 27 26
Page 1: _ . .._ - -- c- -2 - - _.a Natural
Page 5: This report relates to work carried
Page 8 and 9: CONTENTS Summary 1 Introduction 1 G
Page 10 and 11: .::. ,... . :.:...:.>. ,.>:.:.:.. .
Page 12 and 13: 1978; Brenchley and Pickerill, 1980
Page 14 and 15: m 40. 3-J- 2s- /o 0 I. 4 0 . 4 (
Page 16: 63 3 Fig. 7; Aeromagnet ic map Qf t
Page 19 and 20: INE AA’ FIG 7 f3F BALA FAULT 1OnT
Page 21 and 22: I t t t t I a I 1 a t 1 a a 1 I 1 t
Page 23 and 24: Fig. 13: Oistribution of cerium in
Page 25 and 26: 39 38 // 2 f +CYNWYD As 30 NI 62 Cu
Page 27: The main feature is a magnetic high
Page 31 and 32: PT Permotrias C Carboniferous S Sil
Page 33 and 34: Table 3 Summary of analytical resul
Page 37 and 38: f . I PT Permotrias C Carboniferous
Page 39 and 40: samples chalcopyrite was identified
Page 45 and 46: . Table 5 Threshold levels and clas
Page 47 and 48: T Permotrias Z Carboniferous 5 Silu
Page 49 and 50: T Permotrias C Carboniferous S Silu
Page 51 and 52: trials for slate. Analysis of a qua
Page 53 and 54: ST Permotrias l3C Caradoc 335 oc I
Page 55 and 56: levels in sediments from the same s
Page 59 and 60: T Permotrias Carboniferous Silurian
Page 61: makes little direct contribution. T
Page 64 and 65: main contributor I& a sample collec
Page 66: - and SMITH, R., T. ,1975. A compar
Page 71: Road Stream with sample site CAR~IF
Page 77: , 4’3 35 3” 25 20 08 I ,\ ‘\
Page 83:
Fig. 19: Plot of anomalous iron res
Page 104:
AS PAN ta ;I! ta2: 357. ;::* 226 ::
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