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Showing 1 to 20 of 52 for “"sea level changes"”.
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Holocene sea-level changes along the Channel coast of South-west England
A Holocene relative sea-level (RSL) history for the south Devon coast is reconstructed through an analysis of twelve cores extracted from the coastal back-barrier environments of Bantham Sands, North Sands, Slapton Sands and Blackpool Sands. Foraminifera preserved in the sediments are assigned an …
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Implications of the Late Quaternary Glacio–Eustatic Sea level Changes in the Black Sea Catchment Area
Water balance of the Black Sea catchment area is studied and volumetric analysis of the Black Sea basin is performed in order to estimate sea level fluctuations during the Last glacial cycle. In order to reconstruct the most plausible scenario of the Black Sea reconnection with the Mediterranean, …
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Holocene sea-level changes in the Falkland Islands: new insights into accelerated sea-level rise in the 20th Century
This thesis investigates sea-level changes in order to test the hypothesis that the main contribution to early 20th century sea-level rise was Northern Hemisphere land-based ice melt. Multiproxy sea-level reconstructions were established for the Falkland Islands, a location where models suggest …
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The role of sediment supply and sea-level changes on a submerging coast, past changes and future management implications
… have been employed to establish the variation of sea level change, sediment supply and geological control from the Late-Holocene, through the Historical period to the Present day, in Sanday. Techniques such as Ground-Penetrating Radar and geomorphological Radar and geomorphological surveying have …
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EASTERN EQUATORIAL PACIFIC PRODUCTIVITY VIA TWO GEOCHEMICAL PROXIES
… are not clearly constrained. However, sea level changes during glacial cycles have been proposed as a potential driver for productivity variations observed over warm and cold climate periods. In order to determine this, additional oceanic paleoproductivity data collection is necessary …
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Jurassic limestone-marl sequences in northern spain: detecting diagenetic signals using rare earth and trace elements
… interpreted to be the result of eustatic sea-level changes related to Milankovitch cycles. An alternative interpretation supports the idea that these calcareous alternations are a product of diagenetic bedding. Stratigraphic analysis is typically used to determine the extent of diagenesis …
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Catchment Scale Downscaling of Hydroclimatic Variables from General Circulation Model Outputs
… as droughts, floods, extreme temperatures and sea level changes and hence affects the global food production, energy generation, and water resources adversely. Rising greenhouse gas (GHG) concentrations in the atmosphere are considered the dominant cause of climate change. General Circulation …
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Mixed Carbonate-Siliciclastic Sequence Development and Chemostratigraphy On a Distal Foreland During Miocene Glaciation, Eastern Saudi Arabia
… of the siliciclastics was driven by lowered sea levels, and moderately humid to arid climate. Rising sea levels pushed the siliciclastics updip allowing mixed siliciclastics and carbonates to form downdip, under semi-arid climate and locally hypersaline conditions. Maximum transgression …
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The Middle to Late Cretaceous microbiostratigraphy (foraminifera) and lithostratigraphy of the Cauvery Basin, Southeast India
The present research is on the Cretaceous microbio- and litho-stratigraphy of the Cauvery Basin, Southeast India. The planktonic and benthonic foraminifera are used to establish microbiostratigraphic zonations for the mid-Cretaceous succession in the Basin; leading to the first proposal of a …
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The impact of future sea-level rise on the London-Penzance railway line
… line (Dawlish-Teignmouth) lies very close to sea level and has been susceptible to frequent closure during high seas and storm events. As the main railway connection for the southwest of England to the rest of Great Britain, it is a vital transport link for the Devon and Cornwall economy. …
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Establising a high-frequency standard reference sequence stratigraphy, sea-level curve, and biostratigraphy for Morrowan strata of the Lower Absaroka I time slice based upon the Bird Spring Formation, Arrow Canyon, Nevada
… by high-amplitude (100-m), high-frequency sea-level changes. Outcrop data and facies stacking patterns define 59 fifth-order fundamental cycles. These fundamental cycles stack into ten third-order sequences with an average duration of 320 ka. Changes in both cycle thickness and fundamental …
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Sequence Stratigraphy and Paleoecology of the Late Mississippian Little Stone Gap Member in the Appalachians of West Virginia
… from regional fifth-order glacioeustatic sea-level changes consistent with established age constraints for fourth-order sequences. Detrended Correspondence Analysis (DCA) of paleontological bulk samples produced similar differentiation of habitats into carbonates and siliciclastics thereby …
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Sediment Supply Effects On thePlio-Pleistocene Stratigraphic Evolution of the Douala Basin, West Africa
… triggered by the Pliocene and Pleistocene sea level changes. Our data show that the stratigraphic architecture of the prograding deltaic sediments from the Pliocene to the Pleistocene was controlled by the rapid changes in sediment supply. Using biostratigraphic data, the sedimentation …
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Geochronology of terraced coastal deposits in Calabria and eastern Sicily: tectonic implications
… by interaction between the glacio-eustatic sea level changes and Late Quaternary uplift. Thus, by combining ages and elevations of inner edges with the OIT stages of high sea-level stands, it is possible to accurately evaluate the uplift rates of coastal areas and to discriminate, where …
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Analysis of Small-Scale Cyclicity in the Williamsport Sandstone Member and the Lower Wills Creek Formation in Pennsylvania and Maryland
… of the study interval was produced by rapid sea-level changes caused by the 20 thousand-year precessional cycle of the Earth's orbit. These sixth-order cycles are distinguished by disjunct facies changes at non-depositional surfaces produced by rapid sea-level rises; cycles typically contain …
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Ephemeral river systems at the Skeleton Coast, NW-Namibia - Sedimentological and geomorphological studies on the braided river dominated Koigab Fan, the Cenozoic succession in the Uniabmond area and comparative studies on fluvio-aeolian interaction between ephemeral rivers and the Skeleton Coast Erg
… towards older sediments preserved in ancient seacliffs. The Whitecliff Fm. has been subdivided into four sedimentary cycles, which resulted from sea level changes during the Plio- to Middle Pleistocene. The following Uniabmond Fm. provides a unique insight into the depositional history of the …
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