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Helvetic nappes

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Journal Article
Journal: Clay Minerals
Published: 01 June 2001
Clay Minerals (2001) 36 (2): 181-196.
...P. DICK; M. BURKHARD Abstract Anisotropy of magnetic susceptibility (AMS) and X-ray diffraction studies on shale decollement horizons in the Western Helvetic nappes were conducted to delineate the interactions between clay particles and deformation during a non-coaxial thrusting deformation...
FIGURES | View All (15)
Journal Article
Journal: GSA Bulletin
Published: 01 October 1995
GSA Bulletin (1995) 107 (10): 1129-1144.
...Anne Crespo-Blanc; Henri Masson; Zachary Sharp; Michael Cosca; Johannes Hunziker Abstract Stable isotope and 40 Ar/ 39 Ar measurements were made on samples associated with a major tectonic discontinuity in the Helvetic Alps, the basal thrust of the Diablerets nappe (external zone of the Alpine Belt...
Journal Article
Journal: Geology
Published: 01 October 1991
Geology (1991) 19 (10): 1001-1004.
...Mark G. Rowan; Roy Kligfield; Eric A. Erslev Abstract Volume loss due to pressure solution along spaced cleavage and volume gain represented by dilatant veins have been quantified for folded carbonates from the Helvetic nappes. Samples from two formations with low clay contents (<7%) record...
Journal Article
Journal: GSA Bulletin
Published: 01 December 1968
GSA Bulletin (1968) 79 (12): 1839-1846.
...BERNHARD SPÖRLI Abstract Some dolomitizations in the Jurassic beds of the Middle Helvetic Urirotstock Nappe can be attributed to events associated with the Alpine orogeny. This relationship, together with the occurrence of syntectonic chert deposits, suggests that pore solutions were active during...
Image
Cross-section of the <b>Helvetic</b> <b>nappe</b> system and the Subalpine Molasse in cen...
Published: 22 January 2016
Figure 3. Cross-section of the Helvetic nappe system and the Subalpine Molasse in central Switzerland. See text for discussion. Trace of cross-section is given in Figure 2 . Ax – Axen thrust; Dr – Drusberg thrust.
Journal Article
Journal: Geology
Published: 01 August 1983
Geology (1983) 11 (8): 439-442.
...John G. Ramsay; Martin Casey; Roy Kligfield Abstract The geometric features of the Helvetic nappes of the Alps show intense internal deformation set up predominantly by simple shear during nappe transport. The nappes are bounded by thrusts that parallel incompetent layers and ramp upward...
Journal Article
Journal: Geology
Published: 01 September 1994
Geology (1994) 22 (9): 803-806.
... wall and by the observed elimination of the lower Pennine (or Simplon) nappes along this fault zone in the Rhone Valley-Mont Blanc-Belledonne region, resulting in the juxtaposition of North Penninic and Helvetic-Ultra-helvetic nappes at the current erosion level. The distribution of fission-track ages...
Journal Article
Published: 22 January 2016
Geological Magazine (2016) 153 (5-6): 1085-1109.
...Figure 3. Cross-section of the Helvetic nappe system and the Subalpine Molasse in central Switzerland. See text for discussion. Trace of cross-section is given in Figure 2 . Ax – Axen thrust; Dr – Drusberg thrust. ...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 1968
GSA Bulletin (1968) 79 (9): 1123-1150.
... of the Ultrahelvetic and Helvetic nappes. 8 3 1967 30 6 1967 Copyright © 1968, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. 1968 ...
Journal Article
Journal: Geology
Published: 01 September 1983
Geology (1983) 11 (9): 547-551.
...Dorothea Dietrich; Judith A. McKenzie; Honglin Song Abstract A particular feature of many Alpine tectonic thrust sheets composed of carbonates is the development of distinct generations of calcite-filled veins. In the Doldenhorn nappe, one of the Helvetic nappes of Switzerland, we were able...
Series: GSA Field Guide
Published: 01 January 2011
DOI: 10.1130/2011.0022(06)
EISBN: 9780813756226
... the Cretaceous pre-collisional active margin. The Helvetic nappes carry Cretaceous to Paleogene sediments that show strong facies differentiation due to an increasingly unstable European platform. These will be visited in two isolated windows. A cross section through a good part of the Northern Calcareous Alps...
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Series: Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP298.12
EISBN: 9781862395466
... that are perpendicular to the strike of major structures in the Helvetic nappes). Comparisons of fault orientations with orientations of nodal planes of earthquake focal mechanisms of the last 20 years show a poor indicative correlation. The central and western Swiss Alps host a large number of faults prone...
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Journal Article
Published: 01 February 1999
American Mineralogist (1999) 84 (1-2): 160-170.
... facies outcrops of the Taveyanne Sandstone from the Helvetic nappes, Switzerland. SAED patterns reveal increased ordering of the stacking sequences in chlorite with increasing metamorphic grade. However, semi-randomness and rotational faults occur even if the SAED photographs imply a regular ordered...
Journal Article
Journal: AAPG Bulletin
Published: 01 July 1997
AAPG Bulletin (1997) 81 (7): 1185-1207.
.... The subsidence and sediment flux analyses of the Upper Marine Molasse allow an improved understanding of the tectonic and denudation history of the northern Alps. Out-of-sequence thickening in the rear of the northern Alps by underplating of the Aar massif and forward thrusting of the Helvetic nappes...
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Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP425.4
EISBN: 9781862399570
... Abstract Anisotropy of magnetic susceptibility, palaeomagnetism and structural methods are used in order to test the relative timing of antiform updoming and formation of the Rawil Depression in the Helvetic Alps. Samples were collected from all nappes currently exposed in the study region...
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Journal Article
Journal: GSA Bulletin
Published: 01 June 1973
GSA Bulletin (1973) 84 (6): 2053-2078.
... overlapping episodes of Alpine metamorphism are recognized in the Sesia-Lanzo + Lepontine-Pennine + Helvetic terrane: (a) an early, high-pressure, low-temperature event syntectonic with nappe formation, which produced eclogites + albite amphibolites, glaucophane schists, and allied greenschists, with lower...
Journal Article
Journal: GSA Bulletin
Published: 01 October 1995
GSA Bulletin (1995) 107 (10): 1145-1156.
... for the Morcles nappe in the western Helvetic Alps, Switzerland, where mineral parageneses, illite “crystallinity,” and fluid inclusion chemistry record an apparent peak metamorphic temperature gradient that increased across the Morcles nappe from anchizonal conditions in the foreland to epizonal conditions...
Journal Article
Published: 01 July 2008
Bulletin de la Société Géologique de France (2008) 179 (4): 369-381.
... European margin in the Mesozoic paleogeography of the Alpine realm. This domain was located between the Helvetic domain to the north, represented by the Aar and Gotthard massifs in figure 1d , and the Briançonnais domain s.l. , which extended south of the Monte Leone nappe and its substituted Valais...
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Journal Article
Published: 01 March 2001
South African Journal of Geology (2001) 104 (1): 1-12.
... , 57 , 237 – 265 . Ramsay , J.G. , Casey , M. and Kligfield , R. ( 1983 ). Role of shear in development of the Helvetic fold-thrust belt of Switzerland . Geology , 11 , 439 – 442 . Roberts , J.L. anti Treagus , J.E. ( 1977 ). Polyphase generation of nappe...
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Journal Article
Published: 01 May 2004
European Journal of Mineralogy (2004) 16 (3): 469-482.
... carried out on marly slates from selected profiles of the Helvetic zone of the Central Alps, Switzerland. The studied profiles were: Upper Jurassic from the Wildhorn nappe, Brienz, Upper Jurassic from the Parautochthonous of the Aar massif, Glarus Alps, Eocene from the Griesstock nappe of the Glarus Alps...
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