GeoReservoir: An ontology for deep-marine depositional system geometry description

The estimation of the distribution of the total (luminous and dark) mass in early type systems is hard! Even for the lucky few systems for which kinematic information is available, its implementation is mired in problems, given uncertainties about the assumptions that enter the calculations; the most critical of such assumptions involve considerations of the system geometry and the shape of its velocity ellipsoid. This work offers an independent means of getting to the mass distributions of early type galaxies, without relying directly on the phase space distribution function. The methodology is based upon the well established idea that in elliptical galaxies, the largest variations in normalised velocity dispersion profiles occur typically at R < 0.5Re (Re≡ half-light radius) and at R ≥ 2Re.

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The Triassic belt preserved in Arroio Moirão Graben, southernmost Brazil: Depositional system, sequence stratigraphy and tectonics

Journal of South American Earth Sciences ◽

10.1016/j.jsames.2017.05.002 ◽

2017 ◽

Vol 77 ◽

pp. 123-140 ◽

Cited By ~ 6

Author(s):

G.N.O. Borsa ◽

A.M.P. Mizusaki ◽

R. Menegat

Keyword(s):

Sequence Stratigraphy ◽

Depositional System

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Tidal Flat Depositional System of the Cretaceous Yolde Formation of the Gongola Sub-basin Northern Benue trough N. E. Nigeria: Implication for Macro-Tidal Coastline

Journal of Geography Environment and Earth Science International ◽

10.9734/jgeesi/2020/v24i630233 ◽

2020 ◽

pp. 25-34

Author(s):

B. Shettima ◽

M. Bukar ◽

A. Kuku ◽

H. I. Kamale ◽

B. Shettima

Keyword(s):

Tidal Flat ◽

Facies Association ◽

Benue Trough ◽

Depositional System ◽

Lenticular Bedding ◽

Sandstone Facies ◽

Flat Zone ◽

Mudstone Facies

This research aims to evaluate the facies and facies association of the Yolde Formation at Kware stream in the Gongola Sub-basin of the Northern Benue Trough with objective of characterizing its paleodepositional environment. Six lithofacies consisting of trough crossbedded sandstone facies (St), massive bedded sandstone facies (Sm), planar crossbedded sandstone facies (Sp), ripple laminated sandstone facies (Sr), parallel sandstone facies (Sl) and mudstone facies (Fm) defining its stratal packages were skewed into distinctive assemblages of flaser, wavy and lenticular bedding. This present a fining upward signature with facies association typical of tidal flat system. This is evident of a coastal progradation with sequences reflecting migration of a supra-tidal mudflat over intertidal mixed-flat zone which progressively superposed subtidal sandflats. This is indicative of a coastal shoreline with a relatively progradational phase within the net transgressive regional framework of the Cretaceous Yolde Formation.

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