Production of Pollen-Sized "Microforaminifera" from "Normal" Foraminifera

Cohen, Arthur D.; Guber, Albert L.

doi:10.2307/1484697

Cited by 15 publications

(6 citation statements)

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“…Andrejko and others (1983) proposed a three-part classification system based on the genesis of mineral matter in coal as authigenic, detrital, and diagenetic. Diagenetic minerals would include minerals formed from alterations of other mineral species such as desilication of original clay material (De Kimpe and others, 1964;Staub and Cohen, 1978), alteration of iron sulfide to iron sulfates (Raymond and others, 1983) and alteration of biogenic carbonate due to heavy etching (Cohen and Guber, 1968). Similar classifications have been suggested for describing peat (Andrejko and others, 1983).…”

Section: Introductionmentioning

confidence: 88%

Preliminary report of the trace element geochemistry of an Indonesian peat deposit

Palmer¹,

Cameron²

1988

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Thirty-one samples from a peat deposit in Sumatra, Indonesia, were analyzed for thirty elements by instrumental neutron activation analysis. The average concentrations of most trace elements were remarkably similar to average concentrations of coals from the Appalachian basin; over half of the average concentrations for the two areas agreed within ±20 %. The geochemical results suggest a correlation between trace-element content and the location of the sample within the deposit. Three general groups can be recognized. The first consists of 9 samples distinguished by generally low concentrations of most elements except As, Au, and Zn. These samples are generally from the interior of the peat deposit. The second consists of 19 samples from cores at the edges or from the top or bottom of the deposit. These generally have higher concentrations of most trace elements than the first group except for As, Au and Zn. A third group contains 1 sample each from the bottom of three cores near the middle of the deposit. These samples fall off the correlation lines for several element pairs indicating a different geochemical environment. The geochemical relationships indicate that Sumatra peat deposits are good geochemical analogs for the formation of Carboniferous coal deposits of the Appalachian basin.

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Section: Introductionmentioning

confidence: 88%

Preliminary report of the trace element geochemistry of an Indonesian peat deposit

Palmer¹,

Cameron²

1988

Open-File Report

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“…The material for our study were Jurassic and Cretaceous samples, which were selected from 17 (Fig. 1).…”

Section: Methodsmentioning

confidence: 99%

“…A.D. Cohen, A.L. Guber found where in palynological species appear pseudochitinous "microforaminifers" [Cohen, Guber, 1968]. They studied the Quaternary foraminifera from brackish water peat in southwestern Florida.…”

Section: History Of the Studymentioning

confidence: 99%

Microforaminifers of the Callovian and Cretaceous Sediments of Ukraine

2015

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For the first time in Ukraine in Callovian and Cretaceous sediments the microforaminifers were found. They were established during the study of Mesozoic sediments palynocomplexes of 17 outcrops and wells Volyno-Podolska plate, Ukrainian Shield, the outstirts of Donbass, Priazov, Black Sea basin and the Crimea. The method of preprocessing sediments for microforaminifers was corrected. The paleontological characteristics Callovian, Berriasian, Aptian, Albian, Cenomanian, Turonian, Coniacian, Сampanian and Maastrichtian deposits for microforaminifers showed in four phototables is augmented.

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“…Unknown and indeterminate palynomorphs were included in the pollen sum" this category never exceeded an abundance of 1.7%. Dinoflagellates and microforams, the pseudochitinous inner test linings of foraminifera (Cohen and Guber 1968), were included in the palynological analysis (although not the pollen sum).…”

Section: Methodsmentioning

confidence: 99%

Evolution of a freshwater barrier-island marsh in coastal Georgia, USA

et al. 1999

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Beach Pond is a freshwater pond and marsh, located approximately 50-100 m from the beach scarp in the mid-southern portion of St. Cather~nes Island, Liberty County, Georgia (31°37'N latitude, 81°09'W longitude). A 4.5-m sediment core was obtained from the pond in an effort to reconstruct the paleoecology of the site. The sediments (sand, clay, and peat) are Holocene age (< L0,000 years). Gross sedimentological characteristics of the core suggest cyclic depositional trends. The modern vegetation of Beach Pond is dominated by Pluchea and other composites, Typha, Cyperaceae. and Poaceae. The palynology of the core reveals dynamic changes in depositional environments and plant communities during sediment accumulation. Sediments from the lower portion of the core were derived from nearshore marine environments and probably represent accumulation in a shallow lagoon; these are characterized by the abundant pollen of Pinus and a large percentage of broken Pinus pollen grains. A piece of wood recovered from the uppermost lagoonal sediments yielded a radiocarbon date (AMS) of 1210 -+ 40 BP_ These sediments are overlain by tidal-fiat-derived sediments, which arc overlain by a thin peat layer derived from an interdunal swale community dominated by Myrica, A return to brackish marsh conditions then occurred, as indicated by the presence of Limonium, Cheno-Am type (e.g,~ SalicorniaL and abundant Poaccae pollen.The modern freshwater pond plant community became established as the salinity decreased: this is indicated by the abundance of freshwater plant taxa O.e., Azolfa. Typha, Cyperaceae). Sea-level fluctuation, erosion, storm overwash, and anthropogenic factors li.e., road building, water-well drilling) have all influenced the development of past and modern plant communities by altering the hydrology and salinity of the site.

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Production of Pollen-Sized "Microforaminifera" from "Normal" Foraminifera

Cited by 15 publications

References 0 publications

Preliminary report of the trace element geochemistry of an Indonesian peat deposit

Preliminary report of the trace element geochemistry of an Indonesian peat deposit

Microforaminifers of the Callovian and Cretaceous Sediments of Ukraine

Evolution of a freshwater barrier-island marsh in coastal Georgia, USA

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