Jurassic subsidence history in the Hebrides, N.W. Scotland

Morton, Nicol

doi:10.1016/0264-8172(87)90046-8

Cited by 53 publications

(25 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Jurassic sediments in the Inner Hebrides rest conformably on top of coarse-grained Triassic fluvial sediments which, in turn, unconformably overlie Precambrian-Cambrian basement and sediments. These Mesozoic sediments were deposited in two individual fault-bounded basins, the Sea of the Hebrides Basin (Trotternish Peninsula) and the Inner Hebrides Basin (Strathaird Peninsula), and reflect changing relative sea level influenced by tilting in the tectonically bound basins (Morton 1987;Mellere & Steel 1996). The two depocentres were separated by a positive topographic feature, the Skye High (Morton 1965;Hesselbo et al 1998), but there is debate about the degree of separation the two basins experienced (Harris 1992;Mellere & Steel 1996).…”

Section: Geological Contextmentioning

confidence: 99%

Ichthyosaurs from the Jurassic of Skye, Scotland

Brusatte

Young

Challands

et al. 2015

SJG

View full text Add to dashboard Cite

Fossils of Mesozoic vertebrates are rare in Scotland, particularly specimens of marine reptiles such as plesiosaurs and ichthyosaurs. We describe a suite of ichthyosaur fossils from the Early to Middle Jurassic of Skye, which to our knowledge are the first ichthyosaurs from Scotland to be described and figured in detail. These fossils span approximately 30 million years, from the Sinemurian to the Bathonian, and indicate that ichthyosaurs were a major component of Scottish marine faunas during this time. The specimens include isolated teeth that could represent the most northerly known occurrences of the widespread Sinemurian species Ichthyosaurus communis, a characteristic component of the famous Lyme Regis faunas of England, suggesting that such faunas were also present in Scotland during the Early Jurassic. An associated humerus and vertebrae from Toarcian-Bajocian-aged deposits are named as a new genus and species of basal neoichthyosaurian, Dearcmhara shawcrossi. The taxonomic affinities of this taxon, which comes from a critical but poorly sampled interval in the fossil record, suggest that non-ophthalmosaurid neoichthyosaurians dominated European assemblages around the Early-Middle Jurassic boundary, and were later replaced by ophthalmosaurids, whose radiation likely took place outside Europe. Many of these specimens were collected by amateurs and donated to museum collections, a co-operative relationship essential to the preservation of Scotland's fossil heritage.

show abstract

Section: Geological Contextmentioning

confidence: 99%

Ichthyosaurs from the Jurassic of Skye, Scotland

Brusatte

Young

Challands

et al. 2015

SJG

View full text Add to dashboard Cite

show abstract

“…The initiation of volcanism in the Inner Hebrides occurred in Late Palaeocene (Pearson et al, 1996). The igneous rocks were emplaced into the Sea of the Hebrides basin, which had experienced a long history of relatively minor subsidence throughout Late Palaeozoic and Mesozoic times with active faulting continuing into the Cenozoic (Morton, 1987). Mull Lava Field (Fig.…”

Section: Geologic Settingmentioning

confidence: 97%

Native Sn–Pb droplets in a zeolitic amygdale (Isle of Mull, Inner Hebrides)

Dekov

Hålenius

Billström

et al. 2009

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

“…The Jurassic rocks of Applecross have received little attention in published literature and the early Jurassic evolution of the Hebridean Region as a whole is only described in generalised terms (for example Binns et al 1975;Hudson 1983;Morton 1987). This contribution presents some sedimentological detail of the sequence at Applecross which differs considerably from the Lower Jurassic elsewhere in the Hebridean region.…”

Section: Introductionmentioning

confidence: 93%

“…Rapid early Jurassic subsidence in the Hebridean area (Morton 1987) was coupled with a global sealevel rise (Hallam 1981). The onset of marine sedimentation at Applecross was considerably earlier than elsewhere in the northern Hebrides (Oates 1978), but later than marine transgression of the southern Hebrides and Arran (Lovell 1983).…”

Section: Regional Setting and Stratigraphymentioning

confidence: 99%

Sedimentology and early diagenesis of the Lower Jurassic, Applecross, Wester Ross

Searl

1989

SJG

View full text Add to dashboard Cite

SYNOPSISThe Jurassic strata at Applecross comprise 60 m of mixed siliciclastics and carbonates deposited in a variety of shallow marine environments including shallow carbonate shelf with patch reefs, oolitic shoal, restricted lagoon, beach and siliciclastic mudflats. Vadose cement fabrics, blackened carbonate allochems, evaporite pseudomorphs and plant remains indicate several phases of sediment emergence during deposition. Changes in the source of siliciclastic sediment during deposition are also evident. The complex nature of the sequence is related to interplay of a regional marine transgression across the Hebridean area and localised uplift immediately north of Applecross. Differential offshore subsidence continually modified the topography of the depositional basin altering the hydraulic regime in the Applecross area.

show abstract

Jurassic subsidence history in the Hebrides, N.W. Scotland

Cited by 53 publications

References 21 publications

Ichthyosaurs from the Jurassic of Skye, Scotland

Ichthyosaurs from the Jurassic of Skye, Scotland

Native Sn–Pb droplets in a zeolitic amygdale (Isle of Mull, Inner Hebrides)

Sedimentology and early diagenesis of the Lower Jurassic, Applecross, Wester Ross

Contact Info

Product

Resources

About