Global ETD Search
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Showing 1 to 5 of 5 for “"Marine Regression"”.
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Depositional environments and diagenesis of the Mississippian Bottineau interval (Lodgepole) in North Dakota
… part of the Williston Basin comprise a single marine transgression/regression cycle, Early Mississippian (lower Scallion subinterval) marine transgression from the restricted depositional environment of the Bakken Formation resulted in normal marine circulation, Six major facies were developed: …
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Human-rainforest interactions in Island Southeast Asia: Holocene vegetation history in Sarawak (Malaysian Borneo) and Palawan (western Philippines)
… from the island records post-5000 cal BP marine regression, hydrological fluctuations that are likely related to ENSO cyclicities, and persistence of open landscapes with minor evidence of closed forest after 2750 cal BP. This contrasts with existing proxy data that imply increasingly …
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The Broom Creek Formation (Permian), in southwestern North Dakota: depositional environments and nitrogen occurrence
… are, 1) eolian Cores sandstone, 2) nearshore marine sandstone, and 3) marine carbonate. From the sandstone-dolostone distribution, marine predominance existed in the eastern part of the study area and eolian predominance in the west during the deposition of the Broom Creek Formation. </p><p> A …
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Conodonts of the Bakken Formation (Devonian and Mississippian), Williston Basin, North Dakota
… Bakken were deposited in an anoxic, offshore, marine environment. Bedding features and fossils of the middle member indicate a current-influenced, mostly aerobic marine environment. Regional evidence indicates that the lower shale and upper shale of the Bakken were deposited during episodes of …
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La risposta delle parasequenze carbonatiche alle variazioni relative del livello del mare sulla base di indicatori climatici
Il presente progetto di dottorato ha avuto lo scopo principale di ricostruire la relazione tra le variazioni del livello del mare e i cambiamenti paleoclimatici/paleoambientali attraverso lo studio di sistemi carbonatici di mare poco profondo. A tal fine, sono stati considerati due affioramenti …