Global ETD Search
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Showing 1 to 6 of 6 for “"terrestrial input"”.
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Changes in climate and catchment processes over the middle and late Holocene in the boreal region of northeastern Ontario, Canada
… lake-production, lake-level, redox status, and terrestrial input over the middle and late Holocene of the region. Analysis of proxies suggest warm and wet climate conditions that were accompanied by high lake-production, low hypolimnetic oxygen concentrations, reducing sediment-water interface …
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SOURCE AND MATURATION OF HYDROCARBONS IN THE FRIO FORMATION OF THE HUMBLE FIELD, SOUTHEAST-TEXAS GULF COAST BASIN
… by facies variations resulting in different terrestrial input. The South Liberty oils likely received more higher-plant organic matter, whereas the Brazoria oils contain more marine input and the Humble oils lie in-between.
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Molecular studies of the sources and significance of archaeal lipids in the oceans
… Branched GDGTs, generally considered markers of terrestrial input to marine sediments, were detected in carbonate chimneys of this alkaline site near the mid-Atlantic Ridge. A relatively uncommon H-shaped GDGT was also present, and appears to be a marker of hydrothermal archaeal input rather than …
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High-resolution environmental change in the late Jurassic Kimmeridge clay formation
… with water column oxygenation levels and terrestrial input. Sedimentation rates, based on a yearly assumption for organic-rich and coccolith-rich laminae couplets, ranged from 4.5cm per 1000 years for the oil shales to 30-118cm per 1000 years for the coccolith limestone. TOC % ranged from …
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The petroleum potential of the passive continental margin of South-Western Africa : a basin modelling study
… del Sur well, offshore Argentina. Marine and terrestrial source rocks of Barremian to Aptian age deposited during the drift phase of the Atlantic opening were drilled in the wells Kudu 9A-2, Kudu 9A-3 (offshore Namibia), DSDP 361 (offshore South Africa), and Cruz del Sur (offshore Argentina). …
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Sedimentary lipids as indicators of depositional conditions in the coastal Peruvian upwelling regime
… n-alkanols (C24-C28) reflect changes in the input of terrigenous sediment relative to marine sediment during deposition, as indicated by the correlations between these lipids and inorganic indicators of terrigenous clastic debris. The n-alkane carbon preference index (CPI) provides a …