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160206s1984 xx |||||o 00| ||eng c |
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|a (DE-627)JST098904922
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|a (JST)43317021
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Otvos, Ervin G.
|e verfasserin
|4 aut
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| 245 |
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|a Alternate Interpretations of Barrier Island Evolution: Apalachicola Coast, Northwest Florida
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| 264 |
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|c 1984
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a Computermedien
|b c
|2 rdamedia
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| 338 |
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|a Online-Ressource
|b cr
|2 rdacarrier
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|a The transgressive-regressive sequences of two Quaternary [Sangamon and Late Holocene] high sea level episodes were identified in numerous island, lagoon, and mainland drillholes from Apalachicola area core samples. As elsewhere on the Gulf coast, no conclusive indications of a Mid-Wisconsin [Farmdalian?] higher sea level stand had been preserved in marine units. By the use of biotope profiles, based on abundant salinity-sensitive foraminifer taxa, and strandplain configurations, it is suggested that all four original islands [including now-relict "Little St. George" Island) evolved through shoal aggradation in the Late Holocene. Seasonally alternating strong fresh and salt water influences on the microfauna account for the smaller salinityrange of biotopes. In contrast with the Mississippi Sound area, very low and relatively high salinity biotopes occupy smaller areas, and intermediate salinity foraminifer biotopes dominate. Consequently modern Apalachicola area lagoonal sediments generally show smaller contrasts in biotope salinities [with underlying units that formed before the islands were established), than do surface units in other nearshore areas [e.g., Mississippi Sound) with lesser stream runoff. The extent of subsequent lateral or seaward progradation depended on the spatial relationship with stream and littoral drift-sediment sources and on shelf bottom configurations. St. Vincent and "Little St. George" islands became strandplain [beach ridge plain) islands, while narrow Dog and St. George islands acquired an essentially linear character. Alternate theories [spit segmentation and mainland beach detachment-migration] offer far less convincing genetic explanations for these islands.
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| 540 |
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|a © 1984 Van Nostrand Reihold Company
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Bodies of water
|x Bays
|x Gulfs
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geology
|x Petrology
|x Sedimentary petrology
|x Sediments
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| 650 |
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4 |
|a Physical sciences
|x Chemistry
|x Chemical properties
|x Salinity
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| 650 |
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4 |
|a Physical sciences
|x Metrology
|x Altimetry
|x Altitude
|x Sea level
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geology
|x Petrology
|x Sedimentary petrology
|x Sediments
|x Sand
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Landforms
|x Coastal landforms
|x Beaches
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Landforms
|x Coastal landforms
|x Coastal barriers
|x Barrier islands
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| 650 |
|
4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Landforms
|x Coastal landforms
|x Coastal barriers
|x Sandspits
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| 650 |
|
4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Habitats
|x Biotopes
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geology
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| 655 |
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4 |
|a research-article
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| 773 |
0 |
8 |
|i Enthalten in
|t Litoralia
|d Van Nostrand Reihold Company Inc., 1984
|g 1(1984), 1, Seite 9-21
|w (DE-627)JST098904884
|x 24706035
|7 nnns
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| 773 |
1 |
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|g volume:1
|g year:1984
|g number:1
|g pages:9-21
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| 856 |
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|u https://www.jstor.org/stable/43317021
|3 Volltext
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|a GBV_ILN_350
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|a AR
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|d 1
|j 1984
|e 1
|h 9-21
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