Evidence suggests that, at high latitudes, rapid, deep sedimentation of acantharian cysts recurs each spring. The cysts sink to depth to release gametes and then die. Juveniles may then descend to...
اقرأ أكثرRapid uplift and glaciation of the coastal mountains resulted in rapid sedimentation offshore (~m/kyr in the Bering Trough [Montelli et al., 2017]), with several kilometers of glaciomarine sediments deposited, comprising the Yakataga Formation on the shelf and forming the shelf-crossing Bering Trough (Figure 1) [Plafker, 1987; Eyles and Lagoe ...
اقرأ أكثرRapid formation and sedimentation of large aggregates is predictable from coagulation rates (half-lives) of transparent exopolymer particles (TEP) ... Bacterial production and the sinking flux of particulate organic carbon in a large and deep lake in comparison to oceanic environments. Marine Microbial Food Webs, 7 (1993), pp. 161-176. View ...
اقرأ أكثرSediments in areas of rapid sedimentation have a particular rheology, which causes them to move downslope hundreds of kilometers on the sea floor. ... The Deep Carbon Observatory (DCO) is a global community of multi-disciplinary scientists unlocking the inner secrets of Earth through investigations into life, energy, and the fundamentally ...
اقرأ أكثرThe waning phase of a storm results in development of bedforms and rapid deposition of a mud blanket. ... C., McCave, I. Sedimentation under deep-sea storms. Nature 309, 220–225 (1984 ). …
اقرأ أكثرCarbonate content is high, whereas organic carbon content is modest (although higher than average for pelagic carbonates). Sedimentation rates vary mostly between 20 and 60 m/m.y., which is about twice the rate for pelagic deep-sea calcareous ooze. At these sites, drilled to a maximum depth of 604 m in places, the oldest sediments were recovered.
اقرأ أكثرEvidence suggests that, at high latitudes, rapid, deep sedimentation of acantharian cysts recurs each spring. The cysts sink to depth to release gametes …
اقرأ أكثرDeep-sea sediments are those found at depths greater than 500 m. The basic sources of the sediments found in the deep-sea are erosion from land (terrigenous), ash from eruption of volcanoes (arial and submarine), precipitation (hydrogenous), production by pelagic organisms (biogenous), and cosmic fallout (cosmogenous).
اقرأ أكثرFour major events triggered rapid sediment uplift of more than a metre in height, substantial lateral flow of muds at average velocities of 0.4 m …
اقرأ أكثرX-radiograph positives of the cores are shown in Fig. 2.Vertical profiles of organic carbon, carbonates, dry bulk density, and percentages of sand, silt and clay for cores C2, C3 and C5 are shown in Fig. 3.The vertical profiles of excess 210 Pb and total 137 Cs concentrations are illustrated in Fig. 4.Main 210 Pb parameters, accumulation, sedimentation and mixing rates of …
اقرأ أكثرRapid sedimentation exerts a pronounced influence on early sedimentary diagenesis in that there is insufficient time for a sediment particle to equilibrate in any one sediment layer before that layer may be displaced vertically by another layer.
اقرأ أكثرSedimentation Rapid Denudation, Sedimentation Deep Weathering, Leaching, Residuum 3.9:1 Ratio Mean for Low TOC Mudrocks Position of ratio line on triangle calculated from data of Myers & Wignall (1987) Marine Sciences Group Black Shale Composite (Quinby-Hunt and others 1989) Draft - Subject to Revision K-U-Th Depositional Context for Mudrock
اقرأ أكثرBackground: We aimed to develop a deep learning-based segmentation system for rapid on-site cytopathology evaluation (ROSE) to improve the diagnostic efficiency of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) biopsy. Methods: A retrospective, multicenter, diagnostic study was conducted using 5345 cytopathological slide images from 194 patients …
اقرأ أكثرThe late Cretaceous–Cenozoic Beaufort–Mackenzie basin represents a post-rift infill of more than 14 km of sediments in a rapidly subsiding deltaic and marine depositional environment in northern Canada (Dixon et al., 1992).The basin holds many similarities to other major oil-producing Tertiary basins, including the Gulf Coast and Niger delta (Curtis, 2006).
اقرأ أكثرrapid and small-scale hybrid SDS sedimentation-SRC method. Wheat samples were milled into straight-grade fl our using a Miag Multomat mill (Buhler, Duisburg, Germany). Ground whole wheat meal (hereafter called "wheat meal") was prepared from approximately 18 g of wheat kernels using a Udy cyclone mill (Udy Corp., Fort Collins, CO).
اقرأ أكثرFirst, deep-sea sedimentation includes both the eupelagic and the hemipelagic facies domain, the latter being greatly influenced by continental margin effects. Second, all oceanic sedimentation is part of a global geochemical system, so processes in one realm have profound effects on sedimentation in the other. Third, the plate tectonics ...
اقرأ أكثر@article{Grasby2009EvidenceFD, title={Evidence for deep anaerobic biodegradation associated with rapid sedimentation and burial in the Beaufort―Mackenzie basin, Canada}, author={Stephen E. Grasby and Zhuoheng Chen and Dale R. Issler and Lavern D. Stasiuk}, journal={Applied Geochemistry}, year={2009}, volume={24}, pages={536-542} }
اقرأ أكثرC.L. Johnson, P. McFadden, in Treatise on Geophysics (Second Edition), 2015 5.11.3.4 Sedimentary Records. Deep-sea sediment cores fill a large gap in the geographic distribution of PSV/TAF data. For deep-sea cores, the time interval spanned by given core can be estimated via mean sedimentation rates, and so the time averaging at each location is better controlled …
اقرأ أكثرEvidence suggests that, at high latitudes, rapid, deep sedimentation of acantharian cysts recurs each spring. The cysts sink to depth to release gametes and then die. Juveniles may then descend to...
اقرأ أكثرFrom July 2012 to December 2013, the rapid sedimentation and advancement at the updrift shoreline resulted in a decrease of water depth at the entrance of …
اقرأ أكثرRapid sedimentation frequently reduces or inhibits bioturbation 68, as in the case of the tempestites, whereas slow rates of sedimentation represent the ideal scenario for …
اقرأ أكثرThe rapid ESR method has the advantage of being able to get a quick result. The accuracy of the results is acceptable. Same laboratory equipment can be used for the new method. This technique would be suitable for the rheumatology clinics where these test is requested frequently to modify the treatment. Keywords: erythrocyte sedimentation rate ...
اقرأ أكثرRapid sedimentation exerts a pronounced influence on early sedimentary diagenesis in that there is insufficient time for a sediment particle to equilibrate in any one sediment layer before that layer may be displaced vertically by another layer. These sedimentation patterns are common in surface-water reservoirs whose sedimentation rates (1-10 cm yr-1) are several orders of …
اقرأ أكثرHashimoto et al. established a deep learning model with 800 adenocarcinoma and 400 benign images and found that the deep learning model achieved a slightly lower accuracy than the cytopathologists. 17 Patel et al. found that their deep learning model achieved an accuracy of 0·87 in pancreatic cancer identification and ranked 4 th among the ...
اقرأ أكثرThe research shows that deep sedimentation of cysts during the spring delivers significant amounts of organic matter to the ocean depths, providing a potential source of nutrients for creatures of the deep. ... "Celestite ballast causes rapid sinking. The cysts we found in the Iceland Basin are larger than reported from other regions, up to a ...
اقرأ أكثرBackground: We aimed to develop a deep learning-based segmentation system for rapid on-site cytopathology evaluation (ROSE) to improve the diagnostic efficiency of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) biopsy. Methods: A retrospective, multicenter, diagnostic study was conducted using 5345 cytopathological slide images from 194 patients …
اقرأ أكثرRapid on-site cytopathology evaluation (ROSE) is an effective modality to improve the efficiency of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) biopsy for the pathological diagnosis of pancreatic masses, but the lack of cytopathologists has limited the application of this modality.
اقرأ أكثرIsolated pockets with extremely rapid sedimentation are present, and the sedimentation dynamics at the BG site documented here serve as an example of such extraordinary settings. ... Hydrography and sedimentation under the deep western boundary current on Bjorn and Gardar Drifts, Iceland Basin. Marine Geology, 165 (1–4) (2000), pp. 137 …
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