نتایج جستجو برای: evaporites

تعداد نتایج: 253  

Journal: :Frontiers in Earth Science 2022

Within the wave-dominated and high-energy depositional environment of hyper-arid Namibian coast, lagoons related saltpans represent one few regional settings in which sediments originating from both marine terrestrial sources can accumulate under sheltered conditions. This allows for an approximately continuous record mid to late Holocene coastal evolution. For this paleoenvironmental reconstru...

Journal: :Marine and Petroleum Geology 2021

The link between fluid circulation schemes and basin histories remain one of the most valuable tools to understand diagenetic evolution petroleum reservoirs. This study proposes a model for Deep Lacq reservoir constrained by petrography, geochemistry, inclusions studies modeling analyses. Drill cores penetrating 3000 m deep Late Jurassic Early Cretaceous “Deep Lacq” reservoirs, in Aquitaine SW ...

Journal: :The APPEA journal 2021

Natural or native molecular hydrogen (H2) can be a major component in natural gas, and yet its role the global energy sector’s usage as clean carrier is not normally considered. Here, we update scarce reporting of Australian gas with new compositional isotopic analyses H2 undertaken at Geoscience Australia. The dataset involves ~1000 samples from 470 wells both sedimentary non-sedimentary basin...

Journal: :Remote Sensing 2022

A composite spectral feature space is used to characterize the mixing properties of Sentinel 2 Multispectral Instrument (MSI) spectra over a wide diversity landscapes. Characterizing linearity and identifying bounding endmembers allows Substrate Vegetation Dark (SVD) mixture model previously developed for Landsat MODIS sensors be extended MSI sensors. The utility SVD its ability represent varie...

Journal: :Bulletin De La Societe Geologique De France 2021

A detailed field study of Jurassic tectono-stratigraphic architecture the southwestern part Corbières-Languedoc Transfer Zone (CLTZ, NE-SW oriented), between Pyrenean and Provençal orogenic segments (N110 oriented) in SE France, document for first time variations thickness stratigraphic geometries relation to oblique extensional cover structures (NE-SW N110 oriented). These (low-dip normal faul...

Journal: :Basin Research 2021

Fault-controlled mixed siliciclastic-carbonate-evaporite depositional systems exhibit distinct sensitivity to tectonic and eustatic controls that are expressed in the sedimentary architecture. In Upper Carboniferous Billefjorden Trough (Svalbard, Norway), up 2,000 m of a warm arid climate syn-rift basin fill comprises such systems, documented this study with traditional field techniques support...

Journal: :Basin Research 2022

The Central Mallorca Depression (CMD) located in the Balearic Promontory (Western Mediterranean) contains a well-preserved evaporitic sequence belonging to Messinian Salinity Crisis (MSC) salt giant, densely covered by high- and low-resolution seismic reflection data. It has been proposed recently that MSC CMD could be non-deformed analogue of key area represented Caltanissetta Basin Sicily. Th...

Journal: :Geomorphology 2021

Hypogenic caves, linked to carbonate rock dissolution due CO2- and H2S-rich ascending deep waters, represent more than 10% of karstic networks worldwide; a proportion that increases as these systems are better constrained. However, interaction between hypogenic epigenic processes is still poorly understood, especially since the subsequent invasion surface water often obliterates morphological m...

Journal: :Journal of African Earth Sciences 2021

Passive margins are traditionally regarded as tectonically quiescent, however the increasing recognition of significant post-rift tectonic uplift along their flanks offers an important control on sediment delivery. The most extensive record early succession Central Atlantic Margin (CAM) is found in Lower and Middle Jurassic outcrops Essaouira-Agadir Basin (EAB). This characterised by alternatin...

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