Zobrazeno 1 - 9
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pro vyhledávání: '"D. G. Helm"'
Autor:
D. G. Helm
Publikováno v:
Geological Journal. 7:271-298
The application of sedimentological and other techniques in a detailed small-scale study of Quaternary meltwater deposits around Pentraeth in Anglesey, North Wales has shown that interpretations based solely on surficial form are incorrect. Previous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d983775039299933cbf1e3536b3d6465
https://doi.org/10.1002/gj.3350070205
https://doi.org/10.1002/gj.3350070205
Autor:
D. G. Helm, B. Roberts
Publikováno v:
Geological Journal. 19:33-55
The Lleiniog Sand and Gravel Formation, of late Devensian age, has been divided into four Members. The sediments are interpreted as the sequential products of the wasting of a single ice lobe. Member I formed where subglacial streams debouched into a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbb43a85779145b67d107e7b6641594f
https://doi.org/10.1002/gj.3350190104
https://doi.org/10.1002/gj.3350190104
Autor:
D. G. Helm, B. Roberts
Publikováno v:
Geological Journal. 10:131-146
The sands and gravels form part of a once more continuous succession comprising parts of three delta lobes which advanced into a deepening pro-glacial lake. Normal delta construction was accompanied by sporadic rapid mass movement of coarse sediment.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c025727cf54aa83eacc13a057d2d46d
https://doi.org/10.1002/gj.3350100203
https://doi.org/10.1002/gj.3350100203
Publikováno v:
Scottish Journal of Geology. 4:375-385
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::413242166a7934970d99cd6f6450c8d3
https://doi.org/10.1144/sjg04040375
https://doi.org/10.1144/sjg04040375
Autor:
D. G. Helm
Publikováno v:
Proceedings of the Yorkshire Geological Society. 38:105-148
Summary The two-fold stratigraphical division of the Skiddaw Group and the simple outcrop pattern proposed by earlier workers are both shown to be oversimplifications. Three formations are recognized each of which has a rather complicated outcrop. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7753fcd96367b9a72defb74c5fe9c59c
https://doi.org/10.1144/pygs.38.1.105
https://doi.org/10.1144/pygs.38.1.105
Autor:
D. G. Helm, B. Roberts
Publikováno v:
Nature Physical Science. 232:181-183
Evidence suggests that the junction between the Skiddaw and Borrowdale Volcanic Groups is best interpreted in terms of an unconformity and that the Skiddaw Group underwent extensive deformation before the deposition of the Borrowdale Group.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29aed9f24afaaa11ea5aa2114b15a0f9
https://doi.org/10.1038/physci232181a0
https://doi.org/10.1038/physci232181a0
Publikováno v:
Nature. 200:1060-1062
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f37083e7fa2966f6cd7b5a1f9665a8f
https://doi.org/10.1038/2001060a0
https://doi.org/10.1038/2001060a0
Autor:
B. Roberts, D. G. Helm
Publikováno v:
Nature Physical Science. 234:59-60
WADGE states that the map1 illustrating our interpretation of the D1 structure of the Skiddaw Group is wrong. It must be emphasized that the map is in no way central to our argument for unconformity at the base of the Borrowdale Volcanic Group but wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5b6bd8925fb8768b82a8217cc475fd7
https://doi.org/10.1038/physci234059b0
https://doi.org/10.1038/physci234059b0
Autor:
D. G Helm, A. W. B Siddans
Publikováno v:
Geological Society of America Bulletin. 82:523
Strain analysis techniques, used to investigate finite strain states of “bird9s-eye tuffs” from the English Lake District, are discussed. Results have been obtained that differ from those recently described by G. Oertel. The writers dispute most
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c49c971c6b6c83f3a23dec4b9402583e
https://doi.org/10.1130/0016-7606(1971)82[523:doaslt]2.0.co
https://doi.org/10.1130/0016-7606(1971)82[523:doaslt]2.0.co