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Sandsting Complex

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Journal Article
Published: 18 January 2017
Journal of the Geological Society (2017) 174 (3): 486–497.
... of the Sandsting Complex ( c. 370 Ma). Both periods of magmatism are attributed to pulses of localized lithospheric melting in the vicinity of the Walls Boundary Fault during Devonian sinistral relative displacements between Laurentia and Baltica. Supplementary material: Petrological details, full analytical...
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<b>Complex</b> fracture pattern observed on a bedding surface of Santa Rosa <b>sandst</b>...
Published: 01 April 2005
Figure 10 Complex fracture pattern observed on a bedding surface of Santa Rosa sandstones at Canaletas outcrop. Fracture density ranges from a few fractures per meter to more than 50 fractures/m. In the areas with higher fracture density, the rock is basically breccia. This outcrop is located
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(A) Location of Panoche Giant Injection <b>Complex</b> (PGIC) field area. (B) Geol...
Published: 01 April 2017
. (C) Lithostratigraphy of the host strata (Uhalde Sandstone of the Panoche Fm) and the Moreno Fm onto which the architecture of the sand injection complex is superposed in three zones: lower dike zone, sill zone, and upper dike zone. Sandstone (sandst.) intrusion architecture varies vertically
Series: Geological Society, London, Memoirs
Published: 03 January 2020
DOI: 10.1144/M50-2019-12
EISBN: 9781786204707
... Abstract Three separate stacks of thrust sheets (Köli Nappe Complex) constitute the Upper Allochthon in the Caledonide orogen, Sweden. This thrust complex is dominated by late Cambrian–Ordovician successions deposited in subduction-related, marginal oceanic basins. Magmatic activity at c. 488...
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Location of study area. ( a ) General sketch of NW Scotland, Orkney and She...
Published: 23 October 2020
Fig. 1. Location of study area. ( a ) General sketch of NW Scotland, Orkney and Shetland showing the position of the Great Glen–Walls Boundary faults ( b ) Regional map of Shetland showing the main tectonostratigraphic units and tract-bounding faults. GC, Graven Complex; GGF, Great Glen Fault; GT
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2011
DOI: 10.1144/SP353.8
EISBN: 9781862396012
... across central Tibet and highlight a complex deformation field. ENE-striking faults are dominated by sinistral strike–slip motion; NNE-striking faults have normal kinematics and outline a right-stepping en-echelon array of grabens, also suggesting sinistral strike–slip; along NW-striking fault sets...
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Journal Article
Published: 23 October 2020
Journal of the Geological Society (2021) 178 (1): jgs2020-078.
...Fig. 1. Location of study area. ( a ) General sketch of NW Scotland, Orkney and Shetland showing the position of the Great Glen–Walls Boundary faults ( b ) Regional map of Shetland showing the main tectonostratigraphic units and tract-bounding faults. GC, Graven Complex; GGF, Great Glen Fault; GT...
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Journal Article
Published: 01 April 1996
Journal of the Geological Society (1996) 153 (2): 213–230.
..., and the complex cyclical deep to shallow water deposits of the Safiq Formation. Correlation of the Haima Group of Oman with the Lower Palaeozoic of the Arabian Peninsula, North Africa and Iran allows the evolution of the Gondwanan margin to be modelled. A widespread Lower Cambrian sequence of coarse alluvium...
Journal Article
Published: 01 December 1998
Journal of the Geological Society (1998) 155 (6): 975–992.
..., the new seismic-based interpretations enable a reassessment of the Lulworth Crumple and the Ballard Down Fault. The Lulworth Crumple is interpreted as a parasitic fold complex generated by internal folding of the inverted, incompetent syn-rift fill in the immediate hanging wall to the Purbeck Fault...
Journal Article
Published: 01 April 1994
Journal of the Geological Society (1994) 151 (2): 251–268.
... much of the basin life. This complex basin history, plus the presence of basaltic sheet intrusions may reflect the underlying slab history as successive ridge segments were subducted. References Bangs N. Cande S.C. Lewis S. L. Tebbens S. Seismic evidence for tectonic erosion...
Journal Article
Published: 01 December 1993
Journal of the Geological Society (1993) 150 (6): 1089–1102.
... of the late Cretaceous arc, crust thickened in the early Cretaceous orogeny underwent extension to form a metamorphic core complex as Myanmar, west of the Sagaing Fault moved northward. More than half of this northward movement preceded the well-documented 450 km of post-early Miocene dextral displacement...
Journal Article
Published: 01 April 1995
Journal of the Geological Society (1995) 152 (2): 229–250.
...) techniques. The outlier is a half graben with a complex stepped western margin. The Devonian rocks show intense hydrothermal alteration along the fault zone. The main alteration minerals are quartz, K-feldspar, calcite, hematite and illitic and chloritic clays. Multiple chert veining and brecciation...
Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.180.01.25
EISBN: 9781862394285
... certainly result from intrusion of the Sandsting Complex. In comparison, kerogens from Melby (1%) and Papa Stour (0.75%) have very low thermal maturity levels, being unaffected by anything other than normal burial. This distinction is continued at Eshaness, where the largely volcanic succession has...
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Journal Article
Published: 01 September 1992
Journal of the Geological Society (1992) 149 (5): 721–726.
... to the presence ofthe Sandsting complex. The purely sedi- mentological differences may also arise from magmatic activ- ity under the basin as it accumulated. The presence in the Walls basin of contemporaneous Clousta volcanic rocks (Fig, 1) shows that magma was present long before the emplacement of the Sandsting...
Journal Article
Published: 01 September 2007
Journal of the Geological Society (2007) 164 (5): 1037–1058.
...) granites (Northmaven and Sandsting complexes, Fig. 2 ). The equivalent basement rocks east of the Walls Boundary Fault Zone are intruded by Early Devonian ( c . 400 Ma) granites (Graven, Brae, Spiggie complexes), and are unconformably overlain by Middle Devonian sandstones. The Devonian granites...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1963
AAPG Bulletin (1963) 47 (11): 1928–1942.
.... Makes top of section; non-fossiliferous; possibly of Paleocene. Tribune Bay sandst. and shale, 1,900 ft., on Hornby I. Fossils: Inoceramus sp.; comparable with Gabriola fm. Hornby conglom., 1,250 ft., on Mt. Geoffrey, etc., Hornby I. Comparable with conglom. of Northumberland fm...
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Journal Article
Published: 01 August 1992
Journal of the Geological Society (1992) 149 (4): 491–502.
..., to temperatures typically associated with the beginning of true metamorphism i.e 250-350 "C. In the Walls Basin Shetland, the high level of maturation is quite obviously related to the contact metamorphic effects of the Late Devonian, Sandsting granite complex, which intruded the basin shortly after deposi- tion...
Journal Article
Published: 01 February 1992
Journal of the Geological Society (1992) 149 (1): 27–37.
... shear zones are clearly dextral in sense and it is very unlikely that a fault with such a large offset would produce no detectable strain in the surrounding rocks. The inverted normal faults in Orkney and Caithness offset the Upper Devonian. The Sandsting granite complex is affected by the ENE-WSW...
Journal Article
Published: 01 August 1975
Journal of the Geological Society (1975) 131 (4): 353–371.
..., Cambridge, for comparability with the marine values, vary between about +5 and +5o mgal. A NNE.-SSW. belt of relatively low Bouguer anomalies broadly overlies the central structural unit and extends westwards over the Sandsting ranite. The minimum values occur over the Graven complex and the Sandsting...
Journal Article
Journal: AAPG Bulletin
Published: 01 April 2017
AAPG Bulletin (2017) 101 (4): 625–633.
.... (C) Lithostratigraphy of the host strata (Uhalde Sandstone of the Panoche Fm) and the Moreno Fm onto which the architecture of the sand injection complex is superposed in three zones: lower dike zone, sill zone, and upper dike zone. Sandstone (sandst.) intrusion architecture varies vertically...
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