Atlantic Deep-Sea Sediment Cores

Ericson, David B.; Ewing, Maurice; Wollin, Goesta; Heezen, Bruce C.

doi:10.1130/micro5-p58

Cited by 67 publications

(104 citation statements)

References 21 publications

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“…The first meters of the sediment record encompass the last sealevel rise and correspond roughly to the Z ecostratigraphic Ericson Zone (Ericson et al, 1961;Ericson and Wollin, 1968), which is approximately equivalent to isotopic Stage 1. The Z/Y Ericson boundary dated at 11 ka is supposed to be coeval with the Holocene/late Pleistocene boundary (Shipboard Scientific Party, 1995a abundant foraminifer and nannofossil oozes.…”

Section: Stratigraphy and Sedimentary Historymentioning

confidence: 99%

Clay mineral distribution and significance in Quaternary sediments of the Amazon Fan

Debrabant¹,

López²,

Chamley³

1997

Proceedings of the Ocean Drilling Program, 155 Scientific Results

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The clay mineral assemblages of samples from the Amazon Fan were investigated in middle Pleistocene to Holocene sediments from 16 Ocean Drilling Program Leg 155 sites and were placed in lithologic successions to study continental evolution and transport conditions. The sediments sampled along a transect parallel to the main channel reflect moderate differential settling processes, whereas those studied along a transect roughly parallel to the coast clearly suggest winnowing effects related to the North Brazil Current. High-resolution analyses of Holocene deposits reflect the dominant influence of downstream soil erosion relative to supply from the Andean range and the progressive increase of soil-derived relative to rock-derived outputs. The middle Pleistocene to uppermost Pleistocene and Holocene successions are marked by a constantly warm climatic background and by noticeable modifications in the rock-derived (illite, chlorite) and soil-derived (smectite, kaolinite) products. These products successively reflect sea-level changes, tectonic rejuvenation in the Andean range, regressive erosion, and rainfall increase.

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Section: Stratigraphy and Sedimentary Historymentioning

confidence: 99%

Clay mineral distribution and significance in Quaternary sediments of the Amazon Fan

Debrabant¹,

López²,

Chamley³

1997

Proceedings of the Ocean Drilling Program, 155 Scientific Results

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“…Summarizing the model, both the generation and the composition of the turbidites are controlled by the alternating regimes of glacial and interglacial stages, which are effective in three major aspects: (1) Any higher frequency of turbidity currents is connected to glacial periods with low sea level. At these times terrigenous sediments, especially dune sands, can be supplied directly to a shoreline close to the shelf edge and are particularly subject to slides down the slope (numerous titles since Fairbridge, 1947;Ericson et al, 1961). (2) The paleoclimatic stages determine the rapidly shifting position of the major humid and arid belts.…”

Section: History Of Neocene Paleoenvironment In Sand Layer-source Areasmentioning

confidence: 99%

Neogene Sand Layers off Northwest Africa: Composition and Source Environment

Sarnthein¹

1978

Initial Reports of the Deep Sea Drilling Project

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“…A re la tion ship be tween coil ing direc tion and sur face wa ter tem per a ture has been dis cov ered based on the spa tial dis tri bu tion of the foraminifera pop u la tions of the above spe cies. The data dem on strate that dif fer ent species may re spond in op po site ways, how ever, coil ing di rec tion and the am bi ent wa ter tem per a ture in which the spec i mens lived are in deed cor re la tive (Ericson et al, 1961;Boltovskoy, 1962Boltovskoy, , 1973Bandy, 1972). Bolli (1971) was the first who rec og nized the pat terns in coil ing di rec tion and its use in stra tig ra phy, and was fol lowed by many evo lu tion ary and phylo gen etic stud ies.…”

Section: Introductionmentioning

confidence: 93%

Coiling direction in Middle Miocene globorotaliids (Foraminiferida) – a case study in the Paratethys (Upper Silesia Basin, Poland)

Gonera

2018

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The pa per deals with sub-evaporite Badenian de pos its (Mid dle Mio cene, Paratethys) that dis play a sud den ap pear ance of globorotaliid taxa show ing pref er ences in the tax o nomic set and coil ing di rec tion. An in ter val of sinistrally coiled Jenkinsella mayeri with pro por tion ally coiled Globoconella bykovae is at the bot tom of the stud ied se quence. It is fol lowed by an in ter val of pro por tion ally coiled Jenkinsella transsylvanica. Pro por tion ally coiled Globoconella bykovae with a small num ber of propor tion ally coiled Jenkinsella transsylvanica are at the top of the Moravian (CPN 7) substage (Orbulina suturalis alias Lagenidae Zone). The sub-evaporite part of the Wielician (CPN 8) substage (Uvigerina costai alias Spiroplectammina Zone) be gan with a globorotaliid-bar ren in ter val (IIC biozone). It is fol lowed by biozone IID dis play ing three globorotallid peaks amongst globorotallid-bar ren de pos its. Only globoconellas are pres ent in all these three events. Pro por tion ally coiled Globoconella bykovae ap peared first. It is fol lowed by pro por tion ally coiled Globoconella minoritesta and sinistrally coiled Globoconella bykovae at the end of the biozone IID. Coil ing pref er ences of globorotaliids have been com pared to changes in the hy dro graphic re gime un fold ing dur ing the CPN 7 and CPN 8 in the stud ied area of the Paratethys. The study dis cov ers that the coil ing of globorotaliids re sponded se lec tively to the hy dro graphic changes. Globoconella bykovae is highly op por tunis tic and can tol er ate con sid er able tem per a ture changes. Spec i mens of this taxon per sist to coil pro por tion ally dur ing the sub-evaporite Badenian, ex cept for the shift to sinistral coil ing just prior to the Wielician evaporites. Sinistrally coiled Jenkinsella mayeri is the most sen si tive to hy dro graphic changes. This taxon re treated at the on set of the tem per a ture drop dur ing the mid-Moravian cryp tic cool ing. This cool ing is marked by the new jenkinsellid oc cur rence -pro por tion ally coiled Jenkinsella transsylvanica. Pro por tion ally coiled Globoconella minoritesta is pres ent in the mid dle of the IID globorotaliid peaks. The globorotaliid coil ing data, pre sented in this pa per, has been cal i brated to the global stra tig ra phy. The in te grated data (foraminifera, nannofossils, ox y gen and car bon sta ble iso topes, ra dio met ric mea sure ments) sup ports the view that the CPN 7/CPN 8 bound ary is co eval to the Langhian/Serravalian one. In the Pol ish part of the Carpathian Foredeep, the boundary runs within the Skawina For ma tion.

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Atlantic Deep-Sea Sediment Cores

Cited by 67 publications

References 21 publications

Clay mineral distribution and significance in Quaternary sediments of the Amazon Fan

Clay mineral distribution and significance in Quaternary sediments of the Amazon Fan

Neogene Sand Layers off Northwest Africa: Composition and Source Environment

Coiling direction in Middle Miocene globorotaliids (Foraminiferida) – a case study in the Paratethys (Upper Silesia Basin, Poland)

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