Ordovician Tidalites in the Unmetamorphosed Sedimentary Fill of the Brent Meteorite Crater,Ontario

Beales, F. W.; Lozej, G. P.

doi:10.1007/978-3-642-88494-8_36

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…The local breccias, composed of intraformational clasts and related to the above-described marginal marine transitional environment, are interpreted as evaporite solution breccias characteristic in semiarid littoral environments (Beales & Lozej, 1975). They may be the result of a combination of factors, such as alternate wetting and drying, shrinkage and contraction, disruption by roots and associated burrowers that cause internal shifting of sediment components (Shinn, 1983).…”

Section: C4 Interpretationmentioning

confidence: 99%

Transition from alluvial to coastal deposits (Permian–Triassic) on the Island of Mallorca, western Mediterranean

Ramos

1995

Geol. Mag.

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Non-marine redbeds (Permian and Triassic) in the island of Mallorca consist of a 0.4 km-thick alluvial succession that passes upwards into siliciclastic-carbonate coastal deposits. Tectonics and sealevel changes have been the main influences in their evolution. Low in this succession (the 'Areniscas y lutitas de Port des Canonge* unit) sandstone sheets with lateral accretion surfaces (macroscale inclined strata) and mudstones with frequent exposure structures are interpreted as the products of a sinuous alluvial system and floodplain. Climatic fluctuations are considered to be responsible for some significant up-section changes in the evolution of the alluvial deposits. Low-angle or horizontally stratified sandy units, interpreted as the result of flash floods, alternate upwards with point-bar deposits in the 'Areniscas de AsS'. The hydrological response to minor climatic changes was evidently nearly instantaneous due to the lack of significant vegetation cover.During accumulation of mudstones and sandstones of the overlying 'Lutitas y Areniscas de Son Serralta' unit, the interpreted environment of deposition changed from a distal braidplain, mainly constructed by superposition of sandy bedforms with straight or linguoid crestlines in low sinuosity river channels, into a coastal plain with evidence of both continental and marine influences. The overlying carbonate platform (Muschelkalk) marks the development of a more homogeneous marine environment resulting from the Tethyan transgressive event that affected the whole peri-Mediterranean realm during the Anisian (middle Triassic).

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Section: C4 Interpretationmentioning

confidence: 99%

Transition from alluvial to coastal deposits (Permian–Triassic) on the Island of Mallorca, western Mediterranean

Ramos

1995

Geol. Mag.

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“…This sedimentary fill may be preserved from erosion, thus providing a sedimentary and climatic record not otherwise available in the region (Grieve 1997). Some impact craters have already become the sites of important studies of postimpact stratigraphy, paleontology, and paleoclimatology (Beales and Lozej 1975;Partridge et al 1993), but important opportunities are still provided by other impact structures that have crater-filling sediments that have not yet been studied in detail, e.g., Gardnos (Norway) (French et al 1997) and Bosumtwi (Ghana) .…”

Section: Post-impact Processes: Hydrothermal and Sedimentary Settingsmentioning

confidence: 99%

The importance of being cratered: The new role of meteorite impact as a normal geological process

French

2004

Meteorit & Planetary Scien

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Abstract-This paper is a personal (and, in many ways, incomplete) view of the past development of impact geology and of the newly recognized importance of impact events in terrestrial geological history. It also identifies some exciting scientific challenges for future investigators: to determine the full range of impact effects preserved on the Earth, to apply the knowledge obtained from impact phenomena to more general geological problems, and to continue the merger of the once exotic field of impact geology with mainstream geosciences. Since the recognition of an impact event at the Cretaceous-Tertiary (K-T) boundary, much current activity in impact geology has been promoted by traditionally trained geoscientists who have unexpectedly encountered impact effects in the course of their work. Their studies have involved: 1)

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Sedimentary and Diagenetic Features in the Sulfide-Bearing Sedimentary Dikes and Strata of Lower Ordovician Dolomites, Decaturville, Missouri, U.S.A.

Zimmermann¹,

Spreng

1984

Syngenesis and Epigenesis in the Formation of Mineral Deposits

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Ordovician Tidalites in the Unmetamorphosed Sedimentary Fill of the Brent Meteorite Crater,Ontario

Cited by 4 publications

References 1 publication

Transition from alluvial to coastal deposits (Permian–Triassic) on the Island of Mallorca, western Mediterranean

Transition from alluvial to coastal deposits (Permian–Triassic) on the Island of Mallorca, western Mediterranean

The importance of being cratered: The new role of meteorite impact as a normal geological process

Sedimentary and Diagenetic Features in the Sulfide-Bearing Sedimentary Dikes and Strata of Lower Ordovician Dolomites, Decaturville, Missouri, U.S.A.

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