The fluvial-to-marine transition within the post-rift Lower Cambrian Hardyston Formation, Eastern Pennsylvania, USA

Simpson, Edward L.; Dilliard, Kelly A.; Rowell, B.F.; Higgins, Daniel F.

doi:10.1016/s0037-0738(01)00193-2

Cited by 33 publications

(9 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The metre-to tens of metres-scale sequences (high-frequency regressive cycles) reflect progradation of sand waves in distal shoreface-innermost shelf. Facies comparable to S facies association have been widely described in the literature and are interpreted as the consequence of littoral processes (Clifton 1973;Driese et al 1991;Riemersma and Chan 1991;Simpson et al 2002;Rey and Hidalgo 2004).…”

Section: Discussionmentioning

confidence: 99%

Upper Ordovician-Lower Silurian transgressive-regressive cycles of the Central Iberian Zone (NE Jaén, Spain)

2005

View full text Add to dashboard Cite

A thick Upper Ordovician shelf sequence was developed in the northern Gondwana margin (southernmost exposures of the Central Iberian Zone). Integrated sedimentologic and stratigraphic studies allow distinction between pedogenetic processes (Facies association C), shoreline deposits (Facies association S), proximal to distal shelf (Facies association L, H 1 , H 2 , H 3 ) and outer shelf zone or open marine environments (Facies association M, Mo). The vertical distribution of facies is characterized by the presence of regressive high frequency sequences (partial shelf progradational sequences), affected by the presence of catastrophic phenomena (storms). These sequences, in turn, can be classified into higher-order transgressive (T)-regressive (R) cycles.Two second-order T-R megacycles (MC. Ord-2 and MC. Sil-1) limited by a major sequence boundary are identified. Traces of emersion (palaeokarsts and palaeosols) are detected along the sequence boundary, and these are related to the eustatic sealevel fall that occurred during the Ashgillian.The MC. Ord-2 and MC. Sil-1 megacycles extend respectively from the Middle Arenig to the Ashgillian and from Late Ashgillian to the Late Llandovery. Major transgressive peaks occurred at the Llanvirn and at the Middle Llandovery (Aeronian). The vertical distribution of the facies delineates successive genetically related units in relation to relative sea-level changes. Within the upper part of the first megacycle (MC. Ord-2) six third-order cycles are proposed (Lla-1, Car-1, Car-2, Car-3, Car-4, Ash-1), in which a transgressive and a regressive interval can be distinguished. Within the lower part of the second megacycle (MC. Sil-1) two transgressive-regressive third-order cycles are proposed (Lly-1, Lly-2).

show abstract

Section: Discussionmentioning

confidence: 99%

Upper Ordovician-Lower Silurian transgressive-regressive cycles of the Central Iberian Zone (NE Jaén, Spain)

2005

View full text Add to dashboard Cite

show abstract

“…5). Crudely cross-stratified conglomerate to massive sandstone represents deposits of hyperconcentrated to concentrated density flows (Todd, 1989;Simpson et al, 2002). The lack of internal stratification and the poor sorting indicate en masse deposition.…”

Section: Facies Association 2 (Upper Manhang Formation; Coastal Plainmentioning

confidence: 99%

“…The lack of internal stratification and the poor sorting indicate en masse deposition. Crudely cross-stratified coarse sandstone beds were deposited on linguoid or transverse bars during lowflow regime conditions (Miall, 1978;Simpson et al, 2002). The various colors in the purple mudstone facies and the fossils in the grainstones are indicative of a coastal plain environment.…”

Section: Facies Association 2 (Upper Manhang Formation; Coastal Plainmentioning

confidence: 99%

Lithostratigraphy and depositional environments of the Pyeongan Supergroup (Carboniferous–Permian) in the Taebaek area, mid-east Korea

Lee¹,

Chough²

2006

Journal of Asian Earth Sciences

View full text Add to dashboard Cite

“…The basal unit, the late Early Cambrian Hardyston Quartzite, rests unconformably on Mesoproterozoic basement, and on Neoproterozoic rocks where present. The discontinuous Hardyston Quartzite is predominantly composed of feldspathic sandstone and conglomerate that were deposited in fluvial to shallow marine environment (Aaron, 1969;Simpson et al, 2002). …”

Section: Regional Geologymentioning

confidence: 99%

Vestiges of an Iapetan rift basin in the New Jersey Highlands: implications for the Neoproterozoic Laurentian margin

Gates

Völkert

2004

Journal of Geodynamics

View full text Add to dashboard Cite

The fluvial-to-marine transition within the post-rift Lower Cambrian Hardyston Formation, Eastern Pennsylvania, USA

Cited by 33 publications

References 28 publications

Upper Ordovician-Lower Silurian transgressive-regressive cycles of the Central Iberian Zone (NE Jaén, Spain)

Upper Ordovician-Lower Silurian transgressive-regressive cycles of the Central Iberian Zone (NE Jaén, Spain)

Lithostratigraphy and depositional environments of the Pyeongan Supergroup (Carboniferous–Permian) in the Taebaek area, mid-east Korea

Vestiges of an Iapetan rift basin in the New Jersey Highlands: implications for the Neoproterozoic Laurentian margin

Contact Info

Product

Resources

About